Over Voltage Protection

Device

CSPD(Chip-SPD) SMD TYPE

SFI Electronics Technology Inc.

Seems Similar, But Exactly Different

CSPD (Chip Surge Protection Device) is a kind of surface mount surge voltage protector. SFI utilized exclusive

powder material and product technology to develop a creative new concept . We also get many patents from

many countries, including the ”A” innovation patent (Material Composition Having core-Shell microstructure

used for Varistor) and ”B” innovation patent (Surge Absorbing Material with Dual Function ). That’s why

CSPD has the better non-linear ohm with higher withstanding peak current compared to conventions

[Description]：

The non-linear impedance of ceramic comes from Schottky barrier between two piece of ZnO particles (double

Schottky barrier). It means, in sintering process of ZnO , it also realizes the semi-conductive of ZnO particle and

makes the grain boundary more tight. (Fig. (1) & (2))

CSPD peak current protection mode as below.

Fig. (1) Fig. (2)

“” Conventional “” process VS. “” CSPD “”process

(1) 、Mixture of ZnO：

Convention：

At same sintering process,

1.The ZnO particle becomes ion mixture and increase

semi-conductive.

2.Forming the boundary of covering ZnO particles.

CSPD：

The ZnO mixture and covering and the high impedance

materials of particle are divided to two individual process

(innovation) and ZnO particle mixture to make more

semi-conductive.

(2) 、Distribution of boundary：

Convention：

If the particle of ZnO is too rough and few, it’s difficult

to cover on surface evenly. The result will make the

high resistance of Bi2O3 not evenly and affect

dispersion higher, alpha value lower, clamping

voltage higher and affect functions of varistor.

CSPD：

The product is made by nanotech process and makes the

boundary grains in nano to make a chemical

compound. It makes the boundary cover the ZnO evenly

and makes each double Schottky barrier more higher and

even the same height, the function more concentrative,

dispersion lower, higher alpha, low clamping voltage.

The functions of varistors is upgraded.

(3)、Additional PTC：

Convention：

The product has one feature: the non-linear α value will

go down rapidly and the leakage current will exceed

100μA when the temperature rises. It’s the weakness.

CSPD：

To add PTC factors between boundary ,the resistance of

PTC will become large when the temperature rises. Within

a range of temperature, the resistance increases 102 ~108

times rapidly. It upgrades the operation temperature of

CSPD.

What is CSPD ?

Type Transient Series Main

Application Standard

Max. value parameter

Remark

Enhance

Load Dump SHA Auto Power ISO7637-2

Pulse 5 Load Dump 80J

Can replace TVS ,MOV

Surge

SHC Industrial Control

IEC61000-4-5 Surge Current: 3000A(8x20 us)

Can replace

MOV , MLV

SHN Network Security IEC61000-4-5

K21

Surge Voltage:

6KV (10X700 uS)

Can replace GDT, Sidactor

SHV Power IEC61000-4-5 Breakdown Voltage: 470V / Surge: 800A

Can replace MOV, GDT

New Design

ESD

SEA Auto CAN BUS

ISO10650

ISO7637-2 Pulse 1, 2, 3

ESD 30KV Available

SEM Mobile

IEC61000-4-2

Clamping Voltage <12.5V

Under Developing

SEC Ultra High Speed Breakdown voltage : 100V / Cap. 0.05pF

Under Developing

Dual Function

ESD+EMI SML I/O port

(CSPD+Inductor) IEC61000-4-2

ESD: 8KV

EMI : 300M Hz Available

Surge +Current Limited

SMP Power

(CSPD+PTC) IEC61000-4-5

Fail mode at open circuit

Under Developing

Surge+EMI SMC Power

(CSPD+E-cap) IEC61000-4-5

Breakdown Voltage: 270~470V

Cap: 1uF~4.7uF

Under Developing

New product Content( CSPD Family) :

MOV GDT TVS Sidactor CSPD

1. Micro Package Size (SMD ) type: to achieve large space and solve height Limit

2. High Surge Current: Stand 10X700uS 6KV Surge

3. Low BDV: 12V can provide the best solution for protective systems

4. High reliability: Low leakage after high reliability

5. Low Clamping

6. Electric Distribution Concentricity

7. High Non-linear α Value: Over 25 and it will upgrade IV curve sensitivity

8. Quick respond Time: Solve the problem “extinguish” of GDT

9. High performance: Many times surge sparks over 30 times on waveform 10/700us

10. Good Temperature Features : With operating range -55 ℃~125 ℃

Advantages

SFI CSPD MLV TVS MOV GDT

Operating Volt. 5V~470V 5V~100V 5V~100V 18V~1800V 75V~6KV

Clamping Volt. Low Low Low High High

Surge Current 100A~3000A 20A~1200A N.D. 250A~10000A 2KA~15KA

Operating Temp. -55℃~150 ℃ -45℃~125 ℃ -45℃~125 ℃ -45℃~125 ℃ -45℃~125 ℃

Load Dump (J) 1.5J~ 50J 12J~25J N.D. 12J~50J N.D.

Leakage Current Low Low Low High Low

Inductance Effective Low Low Low High Low

Response Time <0.5ns <0.5ns <0.5ns <10ns <50ns

ESD Protection Yes Yes Yes No No

Surge Protection Yes Yes No Yes Yes

Design Position Primary side/ Second second primary side/ second primary Primary

Polarity Bi-Direction Bi-Direction Single Direction Bi-Direction Bi-Direction

Sparks >10 Times High Low High High

Response Time <0.5ns <0.5ns <0.5ns <10ns <50ns

Degradation No Yes No Yes No

Extinguish No No N0 No Yes

Explosion No No No Yes No

Temperatue Derating No No Yes No No

Reliability

Applications Functions

Potential Issues

Electric Functions

Type

The Comparison Table

Our Patents

Higher surge

ability more than

2~3 times

compared to

other products

Higher Surge ,

lower clamping

voltage , more

protection

Higher voltage

compared to

conventional

SMD Type

Higher Load

Dump ability

more than one

time

SHC SHN

SHV SHA

CSPD

SMD 3220 , Surge max value is 500A

SFI –SHV (High Voltage Series) can stand :

3220 / 470V / 800A

2220 / 470V / 500A~800A

1812/ 300V / 500A

1210/ 150V~220V/ 500A

SMD 2220 ,Load Dump max is 25J,

SFI-SHA(Automotive) can stand

80J, and with various models :

3220 / 24V~47V/80J

2220 / 24V~47V/50J

1812/ 24V~47V/ 20J

1210/ 24V~47V/ 12J

1206/ 24V~47V/ 6J

0805/ 24V~47V/ 1.5J

Normal SMD size 2220 , Surge is 1200A

SFI-SHC (High Current Series) is

2220/ 24V~75V/ 3000A (8x20us)

1812/ 24V~75V/ 2000A (8x20us)

1210/ 24V~75V/ 1000A (8x20us)

1206/ 24V~75V/ 500A (8x20us)

GDT, bigger size and higher operation

voltage can reach above 200V,

SFI –SHN series with ”high surge and

low clamping votlage” can stand :

1210/ 47V~75V/ 4KV~6KV(10x700us)

1206/ 12V / 4KV~6KV(10x700us)

Remarks :

SHV Series is UL approval

SFI is a professional manufacturer with the ability to produce various overvoltage

protection devices . The excellent ability of innovation makes the new products

own more and better electric functions compared to competitors.

SFI 1812 SC 240 - 102 A

Logo Size Series

Breakdown

voltage

(V)

- -Surge Current

(8x20 us)

Inner

Code

SFI 1206 SHC 12 501=500

1210 24 102=1000

1812 47 202=2000

2220 75 302=3000

SFI 1210 SN 750 - 060 K

Logo Size Series

Breakdown

voltage

(V)

- -Surge Voltage

(10x700us)

Inner

Code

SFI 1206 SHN 120=12V 060=6KV

1210 470=47V 040=4KV

750=75V

SFI 2220 SV 431 - 501 A

Logo Size Series

Breakdown

voltage

(V)

- -Surge Current

(8x20us)

Inner

Code

SFI 1210 SHV 391=39X10 201=20X10

1812 431=43X10 501=50X10

2220 471=47X10 801=80X10

3220

SFI 2220 SA 240 - 250 J

Logo Size Series

Breakdown

voltage

(V)

- -Load Dump

(J)

Inner

Code

SFI 0805 SHA 24 1R5=1.5J

1206 36 030=3J

1210 47 060=6J

1812 090=9J

2220 120=12J

3220 250=25J

500=50J

800=80J

Application

1. Telecom equipment RJ45/LAN connector

2. Outdoor/ Indoor AP/ IAD

3. Security system IP CAM

4. Base station

5. Low voltage power line

Features

This series has the Highest Transient Current and Energy Absorption The construction and technical

makes the products to stand ultra high transient current and high energy absorption. The size 0805 can stand

over 250A in waveform 8/20us and the size 2220 can stand 6500A in some special size . Therefore, under the

same current and energy conditions, the size of SUPER Series is much smaller than other products. The

sparks can be over 10 times in order to make sure the surge ability.

In the global market, the protection components reach such high current ability products only the disk type, we

use the high professional technical ability for the multilayer technology to provide higher products at the small

size. To compare the market MLV series products, new SHC Series upgrade the current ability and also to

show the higher product characteristic than all the OVP products

1. Ultra high current handle ability , up to 6500A

2. Several Surge Voltageand Surge Current ability.

3. Breakdown Voltage Concentration ratio higher 99.5%

4. High nonlinear exponent α up to 50

5. Ultra low leakage current < 5 uA

6. Ultra high temperature up to 125 degree

Description

SHC Series

SHC Series Specification

Part No. Size Working

Voltage

Breakdown

Voltage

Clamping

Voltage

Leakage

Current

Surge

Current

SFI1206SC120-501A 1206 DC 9V 12V <25V 10 uA 500A

SFI1206SC240-501A 1206 DC 18V 24V <47V 10 uA 500A

SFI1206SC470-501A 1206 DC 38V 47V <75V 5 uA 500A

SFI1206SC750-501A 1206 DC 60V 75V <100V 10 uA 500A

SFI1210SC120-102A 1210 DC 9V 12V <25V 15 uA 1000A

SFI1210SC240-102A 1210 DC 18V 24V <47V 15 uA 1000A

SFI1210SC470-102A 1210 DC 38V 47V <75V 10 uA 1000A

SFI1210SC750-102A 1210 DC 60V 75V <100V 10 uA 1000A

SFI1812SC240-202A 1812 DC 18V 24V <47V 15 uA 2000A

SFI1812SC470-202A 1812 DC 38V 47V <75V 15 uA 2000A

SFI1812SC750-202A 1812 DC 60V 75V <100V 15 uA 2000A

SFI2220SC240-302A 2220 DC 18V 24V <47V 15 uA 3000A

SFI2220SC470-302A 2220 DC 38V 47V <75V 15 uA 3000A

SFI2220SC560-302A 2220 DC 60V 56V <90V 15 uA 3000A

SFI2220SC750-302A 2220 DC 60V 75V <100V 15 uA 3000A

SFI2220SC820-302A 2220 DC 65V 82V <135V 15 uA 3000A

Application

1.Telecom equipment RJ45/Lan connector /

Ethernet

2. Outdoor/ Indoor AP/ IAD

3. Security system IP CAM

4. Low voltage power line DC 12V / AC24V/ PoE

5. ADSL/ XDSL telecom equipment

6. PoE Module

7. HUB Switch

8. VOIP Phone

9. Other Network

Features

1. SMD type to save space (1206 & 1210)

2. Pass 10/700 us/ 40ohm surge 6KV test

3. Lower clamping voltage than GDT

4. Faster response time < 0.5 ns than GDT & Sidactor

5. No extinguish problem

6. Bi-directional

7. Surge strike ability over 30 times

8. Wide operation temperature - 55 ~ +125°C

9. Ultra low leakage current < 1 uA

Description

SHN Series

SHN Series Specification

SFI Part No. Size Application

Voltage

Breakdown

Voltage

Surge

Current

Surge Voltage

SFI1206SN120-060K 1206 DC 3.3V 12V 150A 6KV

SFI1206SN120-040K 1206 DC 3.3V 12V 100A 4KV

SFI1210SN470-060K 1210 AC 24V 47V 150A 6KV

SFI1210SN470-040K 1210 AC 24V 47V 100A 4KV

SFI1210SN750-060K 1210 DC 57V 75V 150A 6KV

SFI1210SN750-040K 1210 DC 57V 75V 100A 4KV

Telecom systems are all connected by ethernet. The surge suppressors can pass the overvoltage to earth and

clamping the voltage to a level acceptable to the systems. Since the standard of 100/1000M of Ethernet speed,

these precise devices and connectors can be subject to voltage shocks. These series are design for this

ethernet and telecom application and best surge protection for the circuit for these with the high performance.

CSPD vs GDT

Function CSPD (GDT)

Size 1206, 1210 Φ5 x5.6 1206(3216) 1812(4532)

BDV 12 V 75V 200V 75V

Clamping Voltage <25 V >300V >500V >300V

Surge (10/700μs) 6 KV 6 KV 4 KV 4 KV

Respond time <1 ns > 500ns >100 ns >100 ns

Extinguishment No Yes Yes Yes

SHV Series Specification

Part Number Size Working voltage

Breakdown Voltage

(V))

Clamping Voltage

(V)

Surge Current 8/20uS

(1 times)

Surge Current 8/20uS

(15 times)

Max Energy 10/100uS

capacitance

AC DC V(1mA) V A A J Pf(at 1Khz)

1210SV391-201A 1210 250 320 390 647 200 100 7.2 105

1812SV471-501A 1812 275 385 470 775 500 250 13.5 200

2220SV391-501A 2220 250 320 390 647 500 250 19.8 235

2220SV431-501A 2220 275 350 430 705 500 250 21.6 215

2220SV471-801A 2220 300 385 470 775 800 500 23.7 195

2220SV391-801A 2220 250 320 390 647 800 500 31.8 320

2220SV431-801A 2220 275 350 430 705 800 500 34.7 305

2220SV471-801A 2220 300 385 470 775 800 500 38.0 290

3220SV431-501A 3220 275 350 430 705 500 250 21.0 120

3220SV391-501A 3220 250 320 390 647 500 500 20.5 125

3220SV471-501A 3220 300 385 470 775 500 250 21.6 115

3220SV431-801A 3220 275 350 430 705 800 500 65.0 490

3220SV471-801A 3220 300 385 470 775 800 500 71.2 450

Application

1. LED Lighting

2. Power Board

3. Base Station

4. AC power supply

5. Industrial equipment and controller

Features

1. UL Approval and meet UL requirement

2. Pass surge strike 15 times 8*20uS and keep ability of 500A

3. Pass 6KV/500A 4 times 8/20uS strikes and keep stable function

4. High voltage type up to 470V

5. Easy to design with surface mount design without lead

6. Save labor cost and easy mass production

7. Space and weight savings on PC board

8. No plastic coating guarantees better flammability rating

7 Available in tape and reel for automatic production

Description

SHV Series

The general LED lighting with AC input driver will configure a MOV (Varistor) for overvoltage protection, which

can provide surge protection at minimum level. However, there has been a traditional degradation problem of

MOV. Not only increase costs of maintenance, but also not assemble on LED board due to height limit.

Therefore, it will cause loss for production and assembly.

SFI provides excellent and total solution of overvoltage protection for LED light application. We suggest to use

level one or multi-level surge protection components as further protection for sensitive LED driver. Also, we

recommend to use ESD protection component in LED.

UL File No. E334409- VZCA

Application Features

Surge is the voltage happen the abnormal rise or down in short time. Also in the automotive environment have

more strictly request in the Load Dump ability. Our SHA series products have the world highest level load

dump ability and also meet ISO7637 standard pulse 5a requirement. These series have the products for 12V

and 24V systems for automotive Load Dump protection and requirement.

Description

SHA Series

SHA Series Specification for 12V/24V Automotive

Part Number

Workin

g

Voltage

Breakdown

Voltage

Clamping

Voltage

Peak

Current Load Dump

Jump Start

Voltage（5min）

Symbol DC

V（1mA）(±10%)

V

A

(for ±1 times)

WLD(J)

(for 10 times) V JUMP (V)

SFI1206SA240-1R5J 12 24 ＜40 400 1.5 24.5

SFI1206SA240-030J 12 24 ＜40 400 3 24.5

SFI1206SA240-060J 12 24 ＜40 500 6 24.5

SFI1210SA240-030J 12 24 ＜40 800 3 24.5

SFI1210SA240-060J 12 24 ＜40 800 6 24.5

SFI1210SA240-120J 12 24 ＜40 1000 12 24.5

SFI1812SA240-060J 12 24 ＜40 1600 6 24.5

SFI1812SA240-120J 12 24 ＜40 1600 112 24.5

SFI1812SA240-250J 12 24 ＜40 2000 25 24.5

SFI2220SA240-120J 12 24 ＜40 3000 12 24.5

SFI2220SA240-250J 12 24 ＜40 3000 25 24.5

SFI2220SA240-500J 12 24 ＜40 5000 50 24.5

SFI3220SA240-500J 12 24 ＜40 5000 50 24.5

SFI3220SA240-800J 12 24 ＜40 5000 80 24.5

SFI2220SA470-250J 24 47 ＜77 3000 25 45.0

SFI2220SA470-500J 24 47 ＜77 4000 50 45.0

SFI3220SA470-500J 24 47 ＜77 5000 50 45.0

SFI3220SA470-800J 24 47 ＜77 5000 80 45.0

1. Meet AEC-Q200 Rev-C requirement

2. Products can withstand ISO-7637-2 pulse 5a/5b

3. Load Dump up to 50 Joule ability highest clamping voltage

function. (Ud 87V, Ri :0.5 ohm , Td: 400ms)

4. Have a good high temperature characteristic 。

(-40℃~125℃)

5. Bidirectional clamping function

1. Power train System

2. Safety System

3. Comfort System

4. Driver Assistant System

5. Security System

6. Hybrid Electrical

7.Other ECU

SEA Series Specification for 12V Automotive CAN BUS

Part Number Stand-off

voltage

Breakdown

Voltage

Clamping

Voltage

Typical

capacitance

ESD

ability

Symbol VRWM(V) V（1mA） V Typ(pf)

VR=0V KV

SFI0603EA240-LSP 12 22~30 ＜40 50 40

SFI0603EA240-MSP 12 22~30 ＜40 25 40

SFI0603EA240-HSP 12 22~30 ＜40 10 40

SEA Series Specification for 24V Automotive CAN BUS

SFI0603EA240-LSP 24 22~30 ＜40 50 40

SFI0603EA240-MSP 24 22~30 ＜40 25 40

SFI0603EA240-HSP 24 22~30 ＜40 10 40

Application Features

CAN Bus is automotive ESD requirement. It is one of the widely used international bus and it’s smart

electrical control equipment to transfer data between every electronic devices in automobile. It achieves a

regional network control systems in whole vehicle and exchanges information between ECU electronic controls

to become the automotive electronic control network. This series is design for this request.

Description

SEA Series

•CAN Bus A, B, C

• LIN

•Other special requirements

•Compliant with IEC61000-4-2 contact +/-30 kV

•Quick response time<0.5 ns

•Low reverse leakage current (<0.1uA)

•Operating temperature exceeds 125 ° C

•Bi-directional, Bi-clamping

•SMD package

•Products with Lead-Free

•Different capacitance values correspond to the different

speed signal bus (CAN Bus)

•Compatible with (ISO7637-2: 2004(E):

•Pulse 1 (max. -50 V),

•Pulse 2 (max. 125 V),

•Pulses 3a and 3b

Security control systems incorporate outdoor and indoor units. The outdoor

equipment must incorporate protective components to prevent damage to

the circuit and equipment by the lightning protection. It’s essential to install

suitable overvoltage protection components. Here have some recommend

part for the IP camera ESD and Surge solution.

IP CAM ESD & Surge Solution

Interface Noise Test STD. Type Recommend Part Package

RJ45 Data (L-G) Surge 10/700us / 40Ω / 6KV SHN SFI1210SN750-060K 1210

RJ45 Data (L-L) Surge 10/700us / 40Ω / 2KV SHN SED323-3R30D0R4-A-11 SOD-323

RJ-45 POE Surge 10/700us / 40Ω / 6KV SHN SFI1210SN750-060K 1210

DC12V (L-G) Surge 1.2/50us / 2Ω / 4KV SHC SFI1812SC470-202A 1812

AC24V (L-G) Surge 1.2/50us / 2Ω / 4KV SHC SFI1812SC470-202A 1812

AC24V (L-L) Surge 1.2/50us / 12Ω / 2KV SHC SFI1210SC470-102A 1210

DC48V Surge 1.2/50us / 2Ω / 4KV SHC SFI1812SC470-202A 1812

Line In Surge 10/700us / 40Ω / 6KV SHN SFI1206SN120-060K 1206

Line In ESD IEC61000-4-2 / 8KV MLE SFI0402-050E101NP 0402

Alarm In Surge 10/700us / 40Ω / 6KV SHN SFI1206SN120-060K 1206

Alarm In ESD IEC61000-4-2 / 8KV MLE SFI0402-050E101NP 0402

Speaker Output Surge 1.2/50us / 42Ω / 2KV SHC SFI1206SC120-040K 1206

Speaker Output ESD IEC61000-4-2 / 8KV MLE SFI0402-050E101NP 0402

Alarm Output Surge 1.2/50us / 42Ω / 2KV SHC SFI1206SC120-040K 1206

Alarm Output ESD IEC61000-4-2 / 8KV MLE SFI0402-050E101NP 0402

RS485 Power

Contact special Case MOV 14D471K 14Φ

RS485 Surge 10/700us / 40Ω / 6KV GDT

RS485 ESD IEC61000-4-2 / 8KV MLE SED323-150D100-B-10 SOD-323

BNC Surge 10/700us / 40Ω / 6KV GDT

BNC ESD IEC61000-4-2 / 8KV MLE SFI0402-050E050PP 0402

Reset Pin ESD IEC61000-4-2 / 8KV MLE SFI0402-050E101NP 0402

SD Card ESD IEC61000-4-2 / 8KV MLE SFI0402-240E0R8PP 0402

USB ESD IEC61000-4-2 / 8KV MLE SUC0402-240E0R2PP 0402

HDMI ESD IEC61000-4-2 / 8KV MLE SUCTD1004-050S0R4P- Array

IP Camera Application Circuit

IP CAM interface for ESD & Surge Solution

Interface Type Requirements Series Part No. Size Ref. Circuit

RJ45 Data Surge 10x700 μs/40 Ω/6KV SHN SFI1206SN120-060K 1206 Ckt(1)

RJ45 PoE Surge 10x700 μs/40 Ω/6KV SHN SFI1210SN750-060K 1210 Ckt(1)

AC 24V/DC12V Surge 10x700 μs/40 Ω/6KV SHN SFI1210SN470-060K 1210 Ckt(2)

SD Card ESD IEC61000-4-2/8KV MLE SFI0402-120E050PP-LF 0402 Ckt(3)

USB ESD IEC61000-4-2/8KV MLE SFI0402-240E2R5PP-LF 0402 Ckt(4)

Video ESD IEC61000-4-2/8KV MLE SFI0402-120E050PP-LF 0402 Ckt(2)

Audio ESD IEC61000-4-2/8KV MLE SFI0402-050E330NP-LF 0402 Ckt(2)

Others I/O ESD IEC61000-4-2/8KV MLE SFI0402-050E330NP-LF 0402 Ckt(2)

Indoor I/O Surge IEC61000-4-5/8x20μs MLE SFI0805-120E560NP-LF 0805

USB

1234

Vbus

D+

D-

CKT(4)

SD Card

123456CLK

CMD

Data0

Data1

Data2

Data3

SHN

MLE

CKT(2)

Power // I/O

Security and control systems including the main front parts、transmission、control、alarm parts、

systems power supply parts, list the recommend parts as following:

RJ45

1A2A3A4A5A6A7A8A

6

Power End Station

PoE(-)

R

Spare Pairs

PoE(+)

Data Pair

4, 5 for 48V+PoE(+)

R

1

7, 8 for Vss

Spare Pairs

PoE(-)

Lan Transformer

2

3

Data Pair

The power surge protection solution depends if the ground is connected to earth.

CKT(3)

CKT(1)

IP Camera Application Circuit

Original Circuit

RJ451

2

3

4

5

6

7

8

RX2-

RX2+

TX1-

TX2-

TX2+

TX1+

RX1-

RX1+

Ethernet(RJ45)1

2

3

4

5

6

7

8

RX2-

RX2+

TX1-

TX2-

TX2+

TX1+

RX1-

RX1+

1236 / 4578

Lan Transform

For 10/100 M For 1G

RJ45

1A2A3A4A5A6A7A8A

6

Power End Station

PoE(-)

R

Spare Pairs

PoE(+)

Data Pair

4, 5 for 48V+PoE(+)

R

1

7, 8 for Vss

Spare Pairs

PoE(-)

Lan Transformer

2

3

Data Pair

The traditional surge solution is to use GDT for protection, when transient voltage occurred, GDT will have a

period of delay between direct current discharge and exact working. Therefore, it’s generally not only use GDTs to

protect electronic equipments and add some protective components after GDT. That’s the reason why GDT has

slow response and remains voltage.

(Fig. 2) (Fig.3)

The circuit of negative power depends if there is connected to earth.

Due to GDT extinguish problem, original Solution GDT have to add MOV or Sidactor

+

NEW=== Our

super solution

Circuit Recommend

Old

Telecom Application Circuit

GDT Disadvantage : On application of PoE, due to the arc voltage is less than working after

GDT discharge. Bcause the GDT will break and burned out and short, it becomes huge

damage due to it’s extinguish problem. In order to solve the issue, it’s usually to put series

of varistors or Sidactor after GDT to to prevent extinguishment. Our CSPD strong

characteristic in 1. Chip Size 2. High flow ability

3. Low clamping volt 4. Quick response time and provide better solution than that.

Ethernet (RJ45) surge protection

Mode Test Standard Series Part No. Package Cap.

L-G 10x700μs/40 ohm /6KV SHN SFI1206SN120-060K 1206 --

L-G 10x700 μs/40 ohm/4KV SHN SFI1206SN120-040K 1206 ---

L-L 10x700 μs/40 ohm/4KV TVS(A) SEDSO8-2R8S050-A-11 SO8 5 pF

L-L 10x700 μs/40 ohm/2KV TVS (B) SEDSO8-2R8S050-B-11 SO8 5 pF

L-L 10x700 μs/40 ohm/2KV TVS(F) SEDSO8-2R8S020-F-11 SO8 2pF

L-L 10x700 μs/40 ohm/2KV TVS SED1006-3R30D7R0-D-11 0402 7pF

L-L 10x700 μs/40 ohm/2KV TVS SED323-3R30R0R4-A-11-LF SOD323 0.4pF

RJ 45 connector application circuit

Part No. Application Surge (10x700 μs)

SFI1206SN120-060K Networking(Ethernet) Data 6KV

SFI1206SN120-040K Networking(Ethernet) Data 4KV

SFI1210SN470-060K Power Line 6KV

SFI1210SN470-040K Power Line 4KV

SFI1210SN750-060K PoE 6KV

SFI1210SN750-040K PoE 4KV

Power over Ethernet (PoE) is a technology which transfer

power and data through ethernet cables. They are including

telecom systems, IP phone, wireless station, IP camera, hub,

computers which get power by PoE. Therefore, it must be use

surge protection for Ethernet RJ45 connectors. In telecom

systems are connected by Ethernet and will also have the surge

or voltage problem caused by power off by the surge. The surge

protective device and pass the overvoltage to earth and clamp

the voltage to avoid the system damage and broken. Now the

standard of 100/1000M of ethernet speed requirement and these

precise devices protected is more important.

Now more popular in networking application in indoor and outdoor security all need for the overvoltage and

lightning protected. The interface of RJ45, the circuit is 4 wires protection (1,2/3,6). In order to have full

protection for 8 wires (1, 2、3,6、4,5、7,8）and prevent the surge attacked, our CSPD products have the

good characteristic and small size devices conjunction with the wires an will provide the protection.

Ethernet (RJ45) Surge Protection

Test Mode Test Standard Series Part No. Package Speed

L-G 10x700 μs/40 ohm /6KV SHN SFI1206SN120-060K 1206 Both

L-G 10x700 μs/40 ohm/4KV SHN SFI1206SN120-040K 1206 Both

L-L 10x700 μs/40 ohm/4KV TVS(A) SEDSO8-2R8S050-A-11 SO8 10/100

L-L 10x700 μs/40 ohm/2KV TVS (B) SEDSO8-2R8S050-B-11 SO8 10/100

L-L 10x700 μs/40 ohm/2KV TVS(F) SEDSO8-2R8S020-F-11 SO8 1G

L-L 10x700 μs/40 ohm/2KV TVS SED1006-3R30D7R0-D-11 0402 1G

SHN TVS

Type A /F So8

Type B SO8

Line to Ground

Line to Line

Tx-

1

R

Tx-

Tx+

Rx-

8

Single X 4 pcs

Tx+

R

4

R

Rx+

Rx-

SO8 X 1 pcs

2

5

7

Rx+

R

6

RJ45

1A2A3A4A5A6A7A8A

Lan Transformer

3

TVS Package

TVS

Parameter

VRWM (max)

VB (min)

IT (5A max)

VC (5A)

VC (24A)

IR (uA)

CT (pF)

Package

SEDSO8-2R8S050-A-11-LF 2.8 3 1 8.5 15 5 5 SO8

SEDSO8-2R8S050-B-11-LF 2.8 3 1 8.5 15 5 5 SO8

SEDSO8-2R8S020-F-11-LF 2.8 3 1 8.5 15 5 2 SO8

RJ45 Application Circuit

Reference Application Circuit

SFI Automotive Load Dump Solution

SFI USB ESD Solution

SFI DC Power Solution

SFI Auto CAN BUS ESD Solution

SFI Electronics Technology Inc.

DC to DC Converter

LED Matrix

Surge Protection

device with

AC High voltage

Surge Protection device with

DC Low voltage

ESD Protection device with

DC Lower voltage SHV SHC MLE

Type Part Number Working Voltage Breakdown

Voltage Clamping Voltage

Surge Current

(8/20 μs/1 time)

Surge Current

(8/20 μs/ (15 times)

SHV

Symbol AC DC V（1mA） V A A

SFI1210SV391-201A 250 320 390(±10%) 647 200 100

SFI2220SV391-801A 250 320 390(±10%) 647 800 500

SFI2220SV431-801A 275 350 430(±10%) 705 800 500

SFI2220SV471-801A 300 385 470(±10%) 775 800 500

SFI3220SV431-801A 275 350 430(±10%) 705 800 500

SFI3220SV471-801A 300 385 470(±10%) 775 800 500

SHC SFI1206SC240-501A 14 18 24(±10%) 45 500 ND

SFI1210SC240-102A 14 18 24(±10%) 45 1000 ND

MLE SFI0603-050E220NP 3.3 5 15~25 34 ND ND

SFI0603-120E100NP 8 12 27~42 60 ND ND

Fuse

R1 R2

BD

Driver IC

Surge Protection

SMD package to replace Dip type

SMD type for AC power over voltage protection

Category C: Service entrance, more severe environment: 10kV, 10kA surge. Category B: Downstream, 30 ft from category C, less severe environment: 6kV, 3kA surge. Category A: Further downstream, 60 ft from category C, least severe environment: 6kV, 0.5kA surge.

SFI Electronics Technology Inc. TEL : +886-3-3506998 , Fax: +886-3-3507689

Category Voltage Current Impedance Application

1.2/50 μs 8/20 μs ohm

C(Outdoor) 6KV 3KA 2 Outdoor Commercial , Industrial / Parking

B 6KV 3KA 2 Lighting near Service Entrance

A(Indoor) 6KV 0.5KA 12 Indoor /Offices/ Retail

Category C Category B Category A

Service drop

Transformer

Utility pole

Meter

Service entrance

Disconnect breaker

Outlet Outlet

● ●

● ●

60 ft

30 ft

United States Europe / America Taiwan China

Surge Immunity 1.2*50 μs/ 8*20 μs LED light bulbs inside

IEEE62.41.2 Ring wave 2.5KV 100Khz Class A

IEC/EN61547 (IEC61000-4-5) 500V/250A,1KV/500A

CNS14676-5 (IEC/EN61000-4-5) 500V/250A 1KV/500A

GB/T18595 (IEC/EN61547) 500V/250A 1KV/500A

Surge Immunity 1.2*50 μs/ 8*20 μs LED outdoor Luminaires

IEEE62.41.2(Category C) 6KV/3KA 20KV/10KA

IEC/EN61547 IEC/EN61000-4-5 4KV/2KA, 6KV/3KA,10KV/5KA

IEC/EN61000-4-5 4KV/2KA

IEC/EN61000-4-5 4KV/2KA

Safety UL8750, UL1310 UL1993, UL1598

IEC/EN62560,IEC/EN60598 IEC/EN61347,IEC/EN62031

CNS STD. GB24819-2009 IEC62031

Character Test Level

Device

Self-ballasted Lamp & Semi-luminaries Luminaries & independent auxiliaries

< =25W > 25W

Surge waveform 1.2*50µs 1.2*50µs 1.2*50µs

Line to Line 1.0KV 1.0KV 1.0KV

Line to Ground 1.0KV 1.0KV 2.0KV

SFI Service Feedback

Immediately

Taiwan Headquarter： Address： No.6, Lane 340, Shan Ying Road

Guishan Taoyuan 333 Taiwan TEL ：+886-3-3506998 FAX： +886-3-3507689 E-mail：service@sfi.com.tw sfi@sfi.com.tw

Shenzhen China ： Address： Room 208, Building 212, Tairan Industry Park Futain District, Shenzhen China TEL：+86-18676730214 TEL：+86-755-83589593 FAX： +86-755-83589574 E-mail：albert@sfi.com.tw

ShangHai China： Address： Room 601, No.11 of 111 Sub-Lane South City, Lane 7580, Humin Road, Shanghai China TEL：+86-18601216474 TEL：+86-21-62775426 FAX： +86-21-62776349 E-mail：jimmi@sfi.com.tw