Dongguan Ampfort Electronics Co., Ltd.
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0402 Resettable Surface Mount Fuses 40mA 50mA 100mA 200mA 350mA 500mA 750mA 1A
Description Of The 0402 Resettable Surface Mount Fuses
With the miniaturization of consumer electronic appliances, electronic components are getting smaller and smaller and SMD, and resettable fuses are also constantly changing. We cater to the changes and have developed the smallest size resettable fuse 0402. Customers are welcome to inquire and request samples.
Features Of The 0402 Resettable Surface Mount Fuses
■ RoHS compliant, lead-free and halogen free
■ Fast response to fault currents
■ Compact design saves board space
■ Low resistance
■ Low-profile
■ Compatible with high temperature solders
■ 0402 size- the smallest PPTC in the market compatible with high temperature solders
■ 10,000 pcs/reel Tape & reel packaging per EIA481-1
Applications Of The 0402 Resettable Surface Mount Fuses
■ USB peripherals
■ Disk drives
■ CD-ROMs
■ Plug and play protection for motherboards and peripherals
■ PDAs / digital cameras
■ Game console port protection
■ Tablet and Notebook PCs
■ E-readers
Performance Specification Of The 0402 Resettable Surface Mount Fuses
| Model | V max | Imax | I hold | I trip | Pd | Max | Resistance | ||
| Time To Trip | |||||||||
| @25°C | @25°C | Typ. | Current | Time | R i min | R1max | |||
| (V dc) | (A) | (A) | (A) | (W) | (A) | (Sec) | (W) | (W) | |
| SMD0402R004SF | 12.0 | 40 | 0.04 | 0.16 | 0.5 | 0.25 | 1.50 | 3.00 | 30.0 |
| SMD0402R005SF | 9.0 | 40 | 0.05 | 0.2 | 0.5 | 0.25 | 1.50 | 1.50 | 20.00 |
| SMD0402R010SF | 6.0 | 40 | 0.10 | 0.30 | 0.5 | 0.5 | 1.00 | 0.15 | 2.00 |
| SMD0402R020SF | 6.0 | 40 | 0.20 | 0.50 | 0.5 | 1.00 | 1.00 | 0.10 | 1.25 |
| SMD0402R035SF | 6.0 | 40 | 0.35 | 0.70 | 0.5 | 8.00 | 0.10 | 0.05 | 0.70 |
| SMD0402R050SF | 6.0 | 40 | 0.50 | 1.00 | 0.5 | 8.00 | 0.10 | 0.04 | 0.40 |
| SMD0402R075SF | 6.0 | 40 | 0.75 | 1.50 | 0.5 | 8.00 | 0.10 | 0.03 | 0.30 |
| SMD0402R100SF | 6.0 | 40 | 1.00 | 2.00 | 0.5 | 8.00 | 0.20 | 0.03 | 0.25 |
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).
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.
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.
Physical Dimensions Of The 0402 Resettable Surface Mount Fuses (mm.)
| P/N | A | B | C | D | |||
| Min. | Max. | Min. | Max. | Min. | Max. | Min. | |
| SMD0402R004SF | 0.85 | 1.15 | 0.35 | 0.65 | 0.4 | 0.8 | 0.10 |
Termination Pad Characteristics
Terminal pad materials:Tin-plated Nickel-Copper
Terminal pad solder ability:Meets EIA specification RS186-9E and ANSI/J-STD-002 Category 3
Thermal Derading Chart Of The 0402 Resettable Surface Mount Fuses
Recommended Hold Current(A) at Ambient Temperature(°C)
| Model | Ambient Operation Temperature | ||||||||
| -40°C | -20°C | 0°C | 25°C | 40°C | 50°C | 60°C | 70°C | 85°C | |
| SMD0402R004SF | 0.056 | 0.050 | 0.045 | 0.040 | 0.034 | 0.026 | 0.020 | 0.016 | 0.013 |
Thermal Derating Curve Average Time-Current Curve
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