ac-dc converter 3 watt...3aca_3r series 3w - single output ac-dc converter - universal input -...

GAPTEC-Electronic GmbH & Co. KG [email protected] – www.gaptec-electronic.com

of 53ACA_3 – Rev. 2017-1.4

Specifications subject to change without notice.

3ACA_3R Series3W - Single Output AC-DC Converter - Universal Input - Isolated & Regulated

AC-DC Converter 3 WattThe 3ACA_3 series is a compact size power converter series offered by Gaptec. It features universal input voltage, taking both DC and AC input voltage, low power consumption, high efficiency, high reliability, safer isolation. It offers good EMC performance, and is UL & CE certified, and widely used in industrial, electricity, instruments, telecommunication and civil applications.

Universal input: 85~264VAC/100~370VDCAC and DC dual-use (input from the same terminal)High efficiencyOperating temperature: -20°C~+70°C

High power densityOutput over voltage protectionShort circuit protection (SCP)Over temperature protectionMeets EN60950, UL60950

Output specifications

Voltage accuracy ±2% ±3% at 3.3V output

Line regulation (full load) ±0.5% (typ)

Load regulation (10% to 100%) ±1% (typ)

Ripple & Noise (p-p) 20MHz Bandwidth:50mV (typ), 100mV (max)

Short circuit protection Continuous, self-recovery

Temperature Drift Coefficient ±0.02%/°C (typ)

Stand-by Power Consumption 0.3W (typ)

Over-current Protection ≥110% Io self-recovery

Over-voltage Protection • 3.3/5VDC output: ≤7.5VDC• 9VDC output: ≤12VDC• 12/15VDC output: ≤20VDC• 24VDC output: ≤30VDC

Min. load 1% (min)

Power-off Holding Time 230VAC input: 50ms

* Parallel line test method is adopted to test the ripple and noise, please see AC-DC Converter Application Notes for specific operation methods.

Input specifications

Input voltage range 85~264VAC, 100~370VDC

Input frequency 47~63Hz

Input current 110VAC• 65mA (typ)

230VAC• 30mA (typ)

Inrush current 110VAC• 10A (typ)

230VAC• 20A (typ)

Leakage current 0.1mA RMS typ. 230VAC/50Hz

Recommended External Input Fuse

• 1A/250V • Slow-fusing

Hot plug Unavailable

Example:3ACA_05S3R3 = 3Watt; AC = AC-DC; A = case style; 5Vout; S = single output; 3 = 3kVAC; R = revised model

Note:1. Unless otherwise specified, data in this datasheet should be tested under the

conditions of Ta = 25°C, humidity<75% when inputting nominal voltage and outputting rated load;

3. All index testing methods in this datasheet are based on our Company’s corporate standards;

4. The performance indexes of the product models listed in this manual are as above, but some indexes of non-standard model products will exceed the above-mentioned requirements, and please directly contact our technician for specific information;

5. We can provide product customization service;6. The product specification may be changed at any time without prior notice.

Approval Model Package Power [W]

Output [Vo]

Output [lo]

Ripple and Noise [mV, typ]

Efficiency [%, typ]

Capacitive load [µF, max]

UL/CE 3ACA_03S3R 37 x 24.50 x 18 mm 2.3 3.3V 700mA 50 66 6000

UL/CE 3ACA_05S3R 37 x 24.50 x 18 mm 3 5V 600mA 50 74 6000






of 53ACA_3 – Rev. 2017-1.4


3W - Single Output AC-DC Converter - Universal Input - Isolated & Regulated

3ACA_3 Series

Typical characteristics

Common specifications

Operating temperature range -20°C ~ +70°C

Power derating temperature range 55°C ~ 70°C: 2%/°C MIN

Storage temperature range -25°C ~ +105°C

Case temperature range +95°C MAX

Humidity 95% MAX

Welding temperature Wave soldering: 260±5°C; time: 5~10sManual welding: 360±10°C; time: 3~5s

Switching frequency 115kHz TYP

I/O-isolation voltage 3000VAC/1Min (Resistance: 100MΩ (typ) at 500VDC)

EMC / EMI / CE CISPR22/EN55022, CLASS A (without external circuit) CLASS B (see EMC recommended circuit)

EMC / EMI / RE CISPR22/EN55022, CLASS A (without external circuit) CLASS B (see EMC recommended circuit)

EMC / EMI / ESD IEC/EN 61000-4-2 Contact ±6KV / Air ±8KV perf. Criteria B

EMC / EMI / RS IEC/EN 61000-4-3 10V/m perf. Criteria A

EMC / EMI / EFT IEC/EN 61000-4-4 ± 2kV (see typical application circuit) perf. Criteria BIEC/EN 61000-4-4 ± 4kV (see EMC recommended circuit) perf. Criteria B

EMC / EMI / Surge IEC/EN 61000-4-5 ±1KV (see typical application circuit) perf. Criteria B IEC/EN 61000-4-5 ±2KV/±4KV (see EMC recommended circuit) perf. Criteria B

EMC / EMI / CS IEC/EN61000-4-6 10 Vr.m.s perf. Criteria A

EMC / EMI / PFM IEC/EN61000-4-8 10A/m perf. Criteria A

EMC / EMI / Voltage dips, short andinterruptions immunity

IEC/EN61000-4-11 0%-70% perf. Criteria B

Safety standards IEC60950, EN60950, UL60950

Safety approvals EN60950, UL60950

Safety class CLASS II

Case material UL94V-0

MTBF MIL-HDBK-217F@25°C: >300,000h

Weight 25g

Note: ①Input voltage should be derated based on temperature derating when it is 85~100VAC/240~264VAC/100~120VDC/340~370VDC;②This product is suitable for use in natural air cooling environments, if in a closed environment, please contact our company’s FAE.


of 53ACA_3 – Rev. 2017-1.4



3ACA_3 Series

Typical efficiency curve

Typical application circuit

Model C1(µF) C2 (µF) TVS

3ACA_03S3R 1 150 SMBJ7.0A

3ACA_05S3R 1 150 SMBJ7.0A

3ACA_09S3R 1 120 SMBJ12A




Note:Output filtering capacitor C2 is electrolytic capacitor, it is recommended to apply electrolytic capacitor with high frequency and low resistance. For capacitance and current of capacitor please refer to manufacture’s datasheet. Capacitance withstand voltage derating should be 80% or above. C1 is ceramic capacitor, which is used to filter high-frequency noise. External input MOV1 is recommended to use S14K350. TVS is a recommended component to protect post-circuits if converter fails.

3ACA_024S33ACA_12S33ACA_05S3

3ACA_024S33ACA_12S33ACA_05S3

EMC solution-recommended circuit

EMC application circuit with higher requirements


of 53ACA_3 – Rev. 2017-1.4



3ACA_3 Series

Mechanical dimensions

EMC solution-recommended circuit PCB layout

Element model Recommended value

MOV1 S14K350

CX 0.1μF/275VAC

LDM 4.7uH/2.0A

LCM 10mH ~ 30mH

CY1 1nF/400VAC

CY2 1nF/400VAC

R1 47Ω/3w

FUSE 1A/250V, slow fusing, necessary

FC-LX1D 2KV/4KV EMC filter

Note:Unit: mm[inch]Pin diameter tolerances: ± 0.10mm[± 0.004inch]General tolerances: ± 0.50mm[± 0.020inch]

Suggestions for safety regulation and wiring width: wire width ≥3mm, distance between wires ≥6mm, and distance between wire and ground ≥6mm


of 53ACA_3 – Rev. 2017-1.4



3ACA_3 Series

Chassis mounting with screw terminals

ac-dc converter 3 watt...3aca_3r series 3w - single output ac-dc converter - universal input -...

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