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Best Alternatives to ASR-K-3-5F

Package: 2512Shenzhen Yezhan Electronics Co., Ltd.Specialized ResistorsResistance: 5mΩPower Rating: 3WTolerance: ±1%Temperature Coefficient: ±70ppm/℃

ASR-K-3-5F is a 3W, 5mΩ, 1% tolerance current sense resistor in a 2512 package. Several potential pin-compatible alternatives with improved temperature stability are available for consideration.

AI replacement insight

Electrical risklow

Most candidates offer superior TCR. Verify pulse handling if needed.

Package risklow

Standard 2512 package is common, but datasheet footprint verification is best practice.

Can it be replaced directly?

Yes, multiple candidates with the same 2512 package and primary electrical ratings (3W, 5mΩ, 1%) are available, such as RLP25FEGR005.

Best replacement path

RLP25FEGR005 by TAI-TECH offers an upgrade path with a tighter temperature coefficient (TCR).

Main risk

The primary risk is ensuring the substitute's temperature coefficient (TCR) meets or exceeds the original's performance for application stability.

Recommended alternatives

5
HoLR2512-5mR-1% package
HoLR2512-5mR-1%

Milliohm

Needs validationlow risk

A 2512 5mΩ 3W 1% resistor with a superior temperature coefficient (TCR) of ±50ppm/°C.

View details

Alternative comparison matrix

Feature / factorASR-K-3-5FHoLR2512-5mR-1%HoXGS2512-5mR-1%LR2512D-3W-5mR-1%Compatibility / risk
Package25122512251225122512 — Package size matches.; HoXGS2512-5mR-1%: Package size matches.; LR2512D-3W-5mR-1%: Package size matches.; RLP25FEGR005: Package size matches.
Resistance5mΩ5mΩ5mΩ5mΩ5mΩ — Resistance value matches.; HoXGS2512-5mR-1%: Resistance value matches.; LR2512D-3W-5mR-1%: Resistance value matches.; RLP25FEGR005: Resistance value matches.
Power3W3W3W3W3W — Power rating matches.; HoXGS2512-5mR-1%: Power rating matches.; LR2512D-3W-5mR-1%: Power rating matches.; RLP25FEGR005: Power rating matches.
Tcr±70ppm/℃±50 ppm/°C±50ppm/°C≤50ppm/°C±50 ppm/°C / ±50ppm/°C / ≤50ppm/°C / ±50ppm/℃ — Candidate has a better (lower) TCR.; HoXGS2512-5mR-1%: Candidate has a better (lower) TCR.; LR2512D-3W-5mR-1%: Candidate has a better (lower) TCR.; RLP25FEGR005: Candidate has a better (lower) TCR.
Tolerance±1%---±1% — Tolerance matches.

Application & sourcing insights

Questions & answers

Verified drop-in options for ASR-K-3-5F are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.