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SMD0603P020TF

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RUILON Shenzhen Ruilongyuan Elec Resettable Fuses, 0603. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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SMD0603P020TF

RUILON Shenzhen Ruilongyuan Elec · Resettable Fuses · 0603

SMD0603P020TF from RUILON Shenzhen Ruilongyuan Elec, in a 0603. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 1 passive First terminal of the non-polarized resettable PTC fuse, in series with the protected line, rated Ihold 0.2 A, Itrip 0.5 A, Vmax 9 VDC and Imax 1 A.
2 2 passive Second terminal of the non-polarized resettable PTC fuse, interchangeable with the first, rated Ihold 0.2 A, Itrip 0.5 A, Vmax 9 VDC and Imax 1 A.

Key specifications

Parameter Value
Manufacturer RUILON Shenzhen Ruilongyuan Elec
Package 0603
Category Circuit Protection
Pins 2

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Hold current (maximum, will not trip at 25°C still air) Ihold 0.2 A 25°C still air; maximum current device will not trip 2
Trip current (minimum, will always trip at 25°C still air) Itrip 0.5 A 25°C still air; minimum current device will always trip 2
Maximum operating voltage Vmax 9 VDC Maximum voltage device can withstand without damage at rated current (Imax) 2
Maximum fault current Imax 40 A Maximum fault current device can withstand without damage at rated voltage (Vmax) 2
Maximum time to trip Tmax 0.6 s Time to trip at 1 A current 2
Minimum device resistance prior to tripping Ri min 0.55 Ω 25°C 2
Maximum device resistance one hour post reflow R1max 3.5 Ω Measured one hour post reflow 2
Power dissipation in tripped state Pd 0.5 W Tripped state, 25°C still air, at rated voltage 2
Resistance change, passive aging -5 5 % +85°C, 1000 hrs; typical 1
Resistance change, humidity aging -5 5 % +85°C, 85% R.H., 168 hours; typical 1
Resistance change, thermal shock -33 33 % +85°C to -40°C, 20 times; typical 1
Maximum surface temperature in tripped state 125 °C Device in tripped state 1
Ambient operating temperature -40 85 °C Ambient operating conditions 1
Peak reflow temperature (Pb-free) TP 260 °C Pb-free reflow; peak 260 +0/-5°C; do not exceed 260°C 4
Hold current derated at ambient Ihold 0.27 A Ambient -40 ºC, thermal derating chart 3
Hold current derated at ambient Ihold 0.25 A Ambient -20 ºC, thermal derating chart 3
Hold current derated at ambient Ihold 0.23 A Ambient 0 ºC, thermal derating chart 3
Hold current derated at ambient Ihold 0.2 A Ambient 25 ºC, thermal derating chart 3
Hold current derated at ambient Ihold 0.17 A Ambient 40 ºC, thermal derating chart 3
Hold current derated at ambient Ihold 0.14 A Ambient 50 ºC, thermal derating chart 3
Hold current derated at ambient Ihold 0.12 A Ambient 60 ºC, thermal derating chart 3
Hold current derated at ambient Ihold 0.1 A Ambient 70 ºC, thermal derating chart 3
Hold current derated at ambient Ihold 0.07 A Ambient 85 ºC, thermal derating chart 3

CAD (KiCad official)

  • Symbol: SMD0603P020TF
  • Footprint: Fuse:Fuse_0603_1608Metric
  • 3D model: 0603 (KiCad packages3D, STEP)
  • 3D model files: smd0603p020tf-etched.step / smd0603p020tf-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smd0603p020tf.step / smd0603p020tf.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: RUILON Shenzhen Ruilongyuan Elec datasheet (8 pp, sha256 5ea86164dfc1ed7e, retrieved 2026-10-16, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF