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Contents

README

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MF0S4FF5102A50

UNI ROYAL Uniroyal Elec · Through Hole Resistors · R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal

MF0S4FF5102A50 from UNI ROYAL Uniroyal Elec, in a R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal. 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 Terminal 1 of an unpolarised resistor; either orientation.
2 2 passive Terminal 2 of an unpolarised resistor; either orientation.

Key specifications

Parameter Value
Manufacturer UNI ROYAL Uniroyal Elec
Package R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal
Category Resistors
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
Resistance tolerance -1 1 % Part-number code F = ±1% 2
Temperature coefficient (TCR) -50 50 ppm/℃ Code F = 50PPM; MF 1/4WS ±1% row, 10Ω~1MΩ 5
Max working voltage 200 V MF 1/4WS, rated continuous working voltage 4
Max overload voltage 400 V MF 1/4WS 4
Dielectric withstanding voltage 400 V MF 1/4WS 4
Ambient temperature range (power rating) -55 155 ℃ Full power constant from -55 to 70℃; derates to zero from 70 to 155℃ 5
Short-time overload ΔR/R 0.5 % ±(0.5%+0.05 Ω); 2.5× RCWV or max overload, whichever lower, 5 s 6
Pulse overload ΔR/R 1 % ±(1%+0.05); 10,000 cycles (1 s ON, 25 s OFF) at 4× RCWV 6
Resistance to soldering heat ΔR/R 1 % ±(1%+0.05 Ω); 260±5℃ solder, 10±1 s 6
Rapid change of temperature ΔR/R 1 % ±(1%+0.05 Ω); -55℃ and 155℃, 30 min each, 100 cycles 6
Load life in humidity ΔR/R 1.5 % Normal type; 40±2℃, 90 to 95% RH, 1,000 h, RCWV 6
Load life ΔR/R 1.5 % Normal type; 70±2℃, 1,000 h, 1.5 h ON / 0.5 h OFF at RCWV 6
Low temperature storage ΔR/R 1.5 % Normal type; -55℃, 2 h 6
High temperature exposure ΔR/R 1.5 % Normal type; 155℃, 16 h 6
Solderability coverage 95 % Coverage must be over 95% 6
Rated power 0.25 W Printed as 1/4W (code S4 = 1/4W-S) 2

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts copper tin 4 Lead Wire Tin solder coated copper wire 5

CAD (KiCad official)

  • Symbol: MF0S4FF5102A50
  • Footprint: Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal
  • 3D model: R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: UNI ROYAL Uniroyal Elec datasheet (8 pp, sha256 58cca3f1fd846c5b, retrieved 2026-11-06, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins, primary two-terminal convention (convention), consensus off (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