component

RN73H1ETTP4421B25

Public Made by Adom

by adom

KOA Speer Elec Current Sense Resistors / Shunt Resistors, 0402. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.

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RN73H1ETTP4421B25

KOA Speer Elec · Current Sense Resistors / Shunt Resistors · 0402

RN73H1ETTP4421B25 from KOA Speer Elec, in a 0402. 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 KOA Speer Elec
Package 0402
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 (code B) -0.1 0.1 % Ordering code tolerance letter B = ±0.1% 1
T.C.R. (code 25) -25 25 ppm/°C Ordering code TCR 25 = ±25 ppm/°C, max 2
Rated power (1E, 0402) P 0.063 W 1/16W (.063W) rated at 85°C ambient; derate per curve above 85°C 2
Maximum working voltage (1E) 50 V Maximum working voltage for 1/16W 1E size 2
Maximum overload voltage (1E) 100 V Maximum overload voltage for 1/16W 1E size 2
Rated ambient temperature 85 °C Rated ambient temperature 85°C; power derating applies at 85°C or above 1
Operating temperature -55 155 °C Operating temperature range as printed 2
Overload (short time) ΔR ΔR -0.05 0.01 0.05 % Rated voltage x 2.5 or max overload voltage, whichever is less, for 5 seconds 2
Resistance to solder heat ΔR ΔR -0.05 0.01 0.05 % 260°C ± 5°C, 10 seconds ± 1 second; depends on resistance value (see footnote) 2
Rapid change of temperature ΔR ΔR -0.1 0.02 0.1 % 1E: -55°C (30 min), +155°C (30 min), 1000 cycles; depends on resistance value (see footnote) 2
Moisture resistance ΔR ΔR -0.1 0.05 0.1 % 85°C ± 2°C, 85% ± 5% RH, 1000 hours; 1.5 hr ON, 0.5 hr OFF cycle; depends on resistance value (see footnote) 2
Endurance at 85°C ΔR ΔR -0.1 0.03 0.1 % 85°C ± 2°C, 3000 hours, 1.5 hr ON, 0.5 hr OFF cycle; depends on resistance value (see footnote) 2
High temperature exposure ΔR ΔR -0.1 0.05 0.1 % +155°C, 1000 hours; depends on resistance value (see footnote) 2

CAD (KiCad official)

  • Symbol: RN73H1ETTP4421B25
  • Footprint: Resistor_SMD:R_0402_1005Metric
  • 3D model: 0402 (KiCad packages3D, STEP)
  • 3D model files: rn73h1ettp4421b25-etched.step / rn73h1ettp4421b25-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); rn73h1ettp4421b25.step / rn73h1ettp4421b25.glb are the bare package body.

Provenance

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

  • Datasheet: KOA Speer Elec datasheet (2 pp, sha256 107ee631f82076a0, retrieved 2026-10-23, 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