product datasheet...2018/01/29 · environmental specifications page 2/7 i hold = hold current....
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ASMD2920 Series Surface Mount PTC Devices
PRODUCT DATASHEETSurface Mount PTC Devices
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ASMD2920 Series Surface Mount PTC Devices
Description
The ASMD2920 series provides surface mount resettable overcurrent protection with holding current from 0.3A to 3.0A.This series is suitable for applications with higher holding current and higher working voltage up to 60V.
Features
● ● ●●●●
RoHS compliant and lead-freeLow profileHalogen-freeFast response to fault currentHigh voltageCompatible with high temperature solders
Power over Ethernet(POE)IEEE 1394 port protectionPowered USB for POS and IPCLow voltage telecom equipmentAutomotive electronics control module protection Industrial control Security systems
Applications
● ● ● ● ●
Agency Approvals
Agency File Number
pending
pending
Regulation Standard
2002/95/EC
EN14582
Environmental Specifications
Page 2/7
I hold = Hold Current. Maximum current device will not trip in 25°C still air.I trip = Trip Current. Minimum current at which the device will always trip in 25°C still air.V max = Maximum operating voltage device can withstand without damage at rated current (Imax).I max = Maximum fault current device can withstand without damage at rated voltage (V max).Pd = Power dissipation when device is in the tripped state in 25°C still air environment at rated voltage.Ri min/max = Minimum/Maximum device resistance prior to tripping at 25°C.R1max = Maximum device resistance is measured one hour post reflow.CAUTION : Operation beyond the specified ratings may result in damage and possible arcing and flame.
Test
Conditions Resistance change
ASMD2920 Series Surface Mount PTC Devices
Passive agingHumidity agingThermal shockResistance to solvent Vibration Ambient operating conditions : - 40 °C to +85 °CMaximum surface temperature of the device in the tripped state is 125 °C
+85°C, 1000 hrs.+85°C, 85% R.H. , 168 hours+85°C to -40°C, 20 timesMIL-STD-202,Method 215MIL-STD-202,Method 201
±5% typical±5% typical±33% typicalNo changeNo change
Performance Specification
Model V max(V dc)
I max(A)
I hold@25°C
(A)
I trip@25°C
(A)
P dTyp.(W)
MaximumTime To Trip Resistance
Current(A)
Time(Sec)
R i min(Ω)
R1max(Ω)
ASMD2920-030ASMD2920-050ASMD2920-075ASMD2920-100ASMD2920-125ASMD2920-150ASMD2920-185ASMD2920-200ASMD2920-250ASMD2920-260ASMD2920-300
ASMD2920-300-16V
6060333333333324166616
10010010010010010010010010010040100
0.300.500.751.101.251.501.852.002.502.603.003.00
0.601.001.502.202.503.003.704.005.005.206.006.00
1.51.51.51.51.51.51.51.51.51.51.51.5
1.52.58.08.08.08.08.08.08.08.08.08.0
3.04.00.30.52.02.02.54.516.010.020.020.0
0.6000.1800.1000.0650.0500.0350.0300.0200.0200.0140.0120.012
4.8001.4001.0000.4100.2500.2300.1500.1200.0850.0750.0480.048
Thermal Derating Curve
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ASMD2920 Series Surface Mount PTC Devices
Average Time-Current Curve
CURRENT IN AMPERES
TIM
E IN
SE
CO
ND
Derating Curves for ASMD2920 Series
Temperature (°C )
Per
cent
age
of D
erat
ed C
urre
nt
020406080
100120140160
-40 -20 0 20 40 60 80
0.01
0.1
1
10
100
0.1 1 10 100
0.30A0.50A0.75A1.00A1.25A1.50A1.85A2.0A2.50A2.60A3.00A
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ASMD2920 Series Surface Mount PTC Devices
Thermal Derading Chart
Model- 40°C - 20°C 0°C 25°C 40°C 50°C
Maximum ambient operating temperature (Tmao) vs. hold current (Ihold)
60°C 70°C 85°C
0.450.761.131.661.892.272.803.023.783.644.53
ASMD2920-030ASMD2920-050ASMD2920-075ASMD2920-100ASMD2920-125ASMD2920-150ASMD2920-185ASMD2920-200ASMD2920-250ASMD2920-260ASMD2920-300
0.400.671.011.471.682.012.472.683.353.254.02
0.350.590.881.291.461.762.172.342.932.913.51
0.300.500.751.101.251.501.852.002.502.603.00
0.250.420.620.911.041.251.541.662.082.262.52
0.170.290.440.640.730.871.071.161.451.741.75
0.230.380.560.830.941.131.391.501.882.082.26
0.200.330.500.730.831.001.221.321.651.951.99
0.140.230.340.500.560.740.850.901.131.131.34
Soldering Parameters
Profile Feature Pb-Free Assembly
Average Ramp-Up Rate(Ts max to T p)Preheat -Temperature Min(Ts min) -Temperature Max(Ts max) -Time(Ts min to Ts max)Time maintained above: -Temperature(TL) -Time(tL)Peak Temperature(Tp)Ramp-Down RateTime 25℃ to Peak TemperatureStorage Condition
3℃/second mac.
150℃200℃60~180 seconds
217℃60~150 seconds260℃6℃/second max.8 minutes max0℃~35℃,≤70%RH
Recommended reflow methods: IR, vapor phase oven, hot air oven, N2 environment for lead-freeRecommended maximum paste thickness is 0.25mmDevices can be cleaned using standard industry methods and solvents.Note 1:All temperature refer to topside of the package, measured on the package body surface.Note 2: If reflow temperatures exceed the recommended profile, devices may not meet the performance requirements.
t L 60~150 s
tsPreheat 60~180 s
t 25°C to peak
Time
TL 217
TP 260
25
TP 20~40 S
Ramp-up Critical Zone TL to TP
Ramp-down
Tsmax
Tsmin
150
200
Tem
pera
ture
(°C
)
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ASMD2920 Series Surface Mount PTC Devices
Physical Dimensions(mm.)
Termination Pad CharacteristicsTerminal pad materials：Tin-plated Nickel-CopperTerminal pad solder ability：Meets EIA specification RS186-9E and ANSI/J-STD-002 Category 3.
ModelMin. Max. Min. Max. Min.
A B C D E
Max. Min. Min.
ASMD2920-030ASMD2920-050ASMD2920-075ASMD2920-100ASMD2920-125ASMD2920-150ASMD2920-185ASMD2920-200ASMD2920-250ASMD2920-260ASMD2920-300
6.736.736.736.736.736.736.736.736.736.736.73
7.987.987.987.987.987.987.987.987.987.987.98
4.804.804.804.804.804.804.804.804.804.804.80
5.445.445.445.445.445.445.445.445.445.445.44
0.300.300.300.300.300.300.300.300.300.300.30
0.600.600.600.400.400.400.300.300.300.300.60
1.301.301.301.000.900.900.900.900.900.901.30
0.250.250.250.250.250.250.250.250.250.250.25
Packaging Quantity and Marking
Part Number Quantity
ASMD2920 SeriesTape & reel packaging per EIA481-1
2,000 pcs/reel5.6±0.1
5.1±0.1
2.3±0.12.3±0.1
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ASMD2920 Series Surface Mount PTC Devices
Governing Specifications EIA 481-1
WP0P1P2A0B0B1max.D0FE1E2min.TT1max.K0Leader min.Trailer min.Reel DimensionsA max.N min.W1W2
16.00 ± 0.34.00 ± 0.108.00 ± 0.102.00 ± 0.055.70 ± 0.108.00 ± 0.1012.101.50 + 0.1, -07.50 ± 0.051.75 ± 0.1014.250.600.100.80 ± 0.1390160
1786016.40 ± 0.522.40
Tape And Reel Specifications (mm)
Storage And Handling ● Storage conditions：40°C max, 70% R.H.● Devices may not meet specified performance if storage conditions are exceeded.Technology Corp.
D2
K0 B0A0
T
F
W
E1
P2D0P0
P1
W4
W2
W3
W1
F
H1
W
CD
H
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ASMD2920 Series Surface Mount PTC Devices
Special Voltage Rating(Optional)
Holding Current Rating
Device Dimensions: Length/width(Unit:1/100 inch) Size 7555 mm / 2920 inch
Surface Mount Device
Part Number System
Cross Reference
ASMD 2920 -
“PolySwitch” is a registered trademark of Tyco Electronics.“POLY-FUSE” is a registered trademark of Littelfuse,Inc.“EVERFUSE” is a registered trademark of Polytronics Technology Corp.
ModelTyco / PolySwitch® Littelfuse / POLY-FUSE® Polytronics / EVERFUSE®
Cross Reference
ASMD2920-030ASMD2920-050ASMD2920-075ASMD2920-100ASMD2920-125ASMD2920-150ASMD2920-185ASMD2920-200ASMD2920-250ASMD2920-260ASMD2920-300
ASMD2920-300-16
SMD030FSMD050FSMD075F
SMD100F/33SMD125F
SMD150F/33(3425)SMD185F(3425)SMD200F(3425)SMD250F(3425)
SMD260FSMD300F
-
2920L0302920L0502920L0752920L1002920L1252920L1502920L1852920L2002920L2502920L2602920L300
2920L300/15
SMD2920P030TFSMD2920P050TFSMD2920P075TFSMD2920P110TFSMD2920P125TFSMD2920P150TFSMD2920P185TFSMD2920P200TFSMD2920P250TFSMD2920P260TFSMD2920P300TF
SMD2920P300TF/15
-