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MF0S4FF300JA50

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UNI ROYAL Uniroyal Elec Through Hole Resistors, 插件,D1.9xL3.3mm. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.

componentresistorsmf0s4ff300ja50factory-2.0.0extractor-text

Verified MF0S4FF300JA50

by Ray · last 6 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

6 Nov 2026RayPublished by the parts factory: tier lcsc, 2 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: MF0S4FF300JA50 · R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal · 2 pins
  • ✓copper: 2 copper pads, none touching another net
  • ✓datasheet: unpolarised two-terminal part: pins 1 and 2 by library convention, no names to check
  • •distributor (warn): no ['digikey', 'mouser'] number
  • ✓family: R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal
  • ✓files: 6 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-is34_jk0/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 1 records
  • •package_fit (skip): the datasheet dimensions give no height or body size to compare (datasheet p.4)
  • ✓pads: 2 pins = 2 pads
  • ✓pose: 1 STEP(s) Z-up, seated, centred
  • ✓symbol: 2 pins agree
  • ✓symbol_text: no pin names collide
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ mf0s4ff300ja50.kicad_sym✓ mf0s4ff300ja50.kicad_mod✓ mf0s4ff300ja50.step
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Made with kicad-footprint-generator 10.0 · KiCad file format 20260206
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verification.json Verified: Published by the parts factory: tier lcsc, 2 pins · Ray

MF0S4FF300JA50

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

MF0S4FF300JA50 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 (F = ±1%) -1 1 % Tolerance letter F; standard series 10Ω~1MΩ 5
Temperature coefficient (F = 50PPM, standard ±50 PPM/℃ row) TCR -50 50 PPM/℃ ±1% standard, 10Ω~1MΩ; t1 +25℃, t2 -55℃ or 125℃ 5
Max working voltage (MF 1/4WS) 200 V Standard product 4
Max overload voltage (MF 1/4WS) 400 V 4
Dielectric withstanding voltage (MF 1/4WS) 400 V 4
Ambient temperature range (power rating) -55 155 ℃ Full power -55 to 70℃; derates to zero from 70 to 155℃ 5
Short-time overload ΔR/R ΔR/R -0.5 0.5 % 4.13; 2.5×RCWV or max overload voltage, whichever lower, 5 s 6
Pulse overload ΔR/R ΔR/R -1 1 % 4.28; 10,000 cycles (1 s ON, 25 s OFF) at 4×RCWV or max overload, whichever less 6
Resistance to soldering heat ΔR/R ΔR/R -1 1 % 4.18; leads immersed 2.0-2.5 mm from body in 260℃±5℃ solder for 10±1 s 6
Rapid change of temperature ΔR/R ΔR/R -1 1 % 4.19; 30 min at -55℃ and 30 min at 155℃; 100 cycles 6
Load life in humidity ΔR/R (normal type) ΔR/R -1.5 1.5 % 7.9; 1,000 h (1.5 h ON, 0.5 h OFF) at RCWV or max working voltage, whichever less; 40±2℃, 90-95% RH 6
Load life ΔR/R (normal type) ΔR/R -1.5 1.5 % 4.25.1; 1,000 h at RCWV or max working voltage, whichever less; 1.5 h ON, 0.5 h OFF at 70±2℃ ambient 6
Low temperature storage ΔR/R (normal type) ΔR/R -1.5 1.5 % IEC 60068-2-1 (Aa); -55℃ for 2 h 6
High temperature exposure ΔR/R (normal type) ΔR/R -1.5 1.5 % MIL-STD-202 108A; 155℃ for 16 h 6
Solder coverage (solderability) 95 % 4.17; solder 245±3℃, dwell 2-3 s 6

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: MF0S4FF300JA50
  • 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