

Overview
The SMD0603-020 is a resettable Fuse made by TECHFUSE in a 0603 package with 2 pins. -40℃~+85℃ 200mA 3.5Ω 40A 500mA 500mW 550mΩ 600ms 9V 0603 Resettable Fuses ROHS.
PCBKit's library has its KiCad symbol (Device:Polyfuse, from KiCad's library) and its footprint (Fuse:Fuse_0603_1608Metric, from KiCad's library), ready for a KiCad board. 3,534 are in stock at JLCPCB (part C70049). 2 open-source boards in 2 repositories on GitHub use it.
Symbol
Footprint
Parameters
9- Current - Max
- 40A
- Hold Current
- 200mA
- Operating Temperature
- -40℃~+85℃
- Power Dissipation
- 500mW
- Resistance - Initial (Ri) (Min)
- 550mΩ
- Resistance - Post Trip (R1) (Max)
- 3.5Ω
- Time to Trip(Max)
- 600ms
- Trip Current
- 500mA
- Voltage - Max
- 9V
Order codes
1- SMD0603-020LCSC C70049
Pinout
2| Pin | Name | Type |
|---|---|---|
| 1 | — | Passive |
| 2 | — | Passive |
Open-source boards using it
All 2- 4 layers55.8 × 20 mm

- 2 layers59.5 × 27.2 mm

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<iframe src="https://pcbkit.io/embed/parts/techfuse/SMD0603-020" title="SMD0603-020 in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/techfuse/SMD0603-020.jpg" alt="SMD0603-020" width="1200" height="900">[](https://pcbkit.io/parts/techfuse/SMD0603-020)Questions
Is there a KiCad symbol and footprint for the SMD0603-020?
Yes. The symbol is Device:Polyfuse and the footprint Fuse:Fuse_0603_1608Metric, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the SMD0603-020?
0603, with 2 pins. Its footprint is drawn on this page.
Where is the SMD0603-020 datasheet?
TECHFUSE publishes it: the Datasheet link on this page opens it.
Where can I order the SMD0603-020?
JLCPCB lists it as part C70049, with 3,534 in stock; the sellers' links on this page open their listings.
What can replace the SMD0603-020?
Parts like it in the library: the JK-SMD0603-010 by Jinrui Electronic Materials Co., the BSMD0603-005-33V by BHFUSE, the SMD0603-005-24V by 台湾陆海 and the BSMD0603-010-33V by BHFUSE. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the SMD0603-020?
2 boards in 2 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8JK-SMD0603-010
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0603-40℃~+85℃ 0.8mm 1.6mm 1s 200mA 24V 25Ω 2Ω 40A 500mW 50mA 0603 Resettable Fuses ROHS台湾陆海Resettable FusesBSMD0603-010-33V
0603-40℃~+85℃ 1.05mm 1.85mm 100mA 1mm 300mA 33V 40A 500mW 600ms 8Ω 900mΩ 0603 Resettable Fuses ROHSBHFUSEResettable Fuses0603L003/60AR
0603Resettable FusesLUTE0603L005/24AR
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0603-40℃~+85℃ 1.05mm 1.85mm 100mA 1mm 300mA 36V 40A 500mW 600ms 8Ω 900mΩ 0603 Resettable Fuses ROHSLUTEResettable FusesSMD0603-010-24V
06031.05mm 1.85mm 100mA 10Ω 1mm 1s 24V 300mA 40A 500mW 900mΩ 0603 Resettable Fuses ROHS台湾陆海Resettable Fuses