Is there a pin-compatible replacement for LR2512-22R002F4?

Yes, several candidates like Vishay's WSLF25122L000FEA and RALEC's LR2512-23R002F4 share the same 2512 package and pinout. However, they are power upgrades, so reviewing the datasheet for thermal performance is essential.

What risks should I check before replacing LR2512-22R002F4?

Key risks include differences in Temperature Coefficient of Resistance (TCR), which affects precision, and pulse withstanding capability. Also, verify the power derating curve of the replacement part in your design.

LR2512-22R002F4 Alternatives, Datasheet & Cross Reference | RALEC

Find reliable substitutes for the RALEC LR2512-22R002F4, a 2mΩ 2W 1% 2512 chip resistor. This guide provides verified upgrade paths and key engineering checks for a robust replacement.

AI replacement insight

Electrical riskmedium

TCR and pulse current differences may impact circuit performance.

Package risklow

All recommended alternatives use the same 2512 package.

Sourcing risklow

Multiple vendors offer suitable high-power 2512 resistors.

Can it be replaced directly?

No direct 2W replacements meet the recommended 1.5x power safety margin. The best path is to select a pin-compatible upgrade with a 3W or higher power rating.

Best replacement path

Upgrade to a higher power-rated resistor like RALEC LR2512-23R002F4 (3W) or Vishay WSLF25122L000FEA (6W) for improved thermal margin.

Main risk

Differences in TCR and pulse handling capability require engineering validation.

Recommended alternatives

RALEC LR2512-23R002F4 is a direct upgrade path from the same series, offering a 3W power rating.

View details

Alternative comparison matrix

Feature / factor	LR2512-22R002F4	LR2512-23R002F4	PEWF2512F2L00Q9	WSLF25122L000FEA	Compatibility / risk
Package	2512	2512	2512	2512	2512 — Same EIA package size ensures form-fit compatibility.; PEWF2512F2L00Q9: Same EIA package size ensures form-fit compatibility.; WSLF25122L000FEA: Same EIA package size ensures form-fit compatibility.
Resistance	2 mΩ	2 mΩ	2 mΩ	2 mΩ	2 mΩ — Identical resistance value.; PEWF2512F2L00Q9: Identical resistance value.; WSLF25122L000FEA: Identical resistance value.
Power	2 W	3 W	5 W	6 W	3 W / 5 W / 6 W — Higher power rating provides improved thermal margin.; PEWF2512F2L00Q9: Higher power rating provides significant thermal margin.; WSLF25122L000FEA: Higher power rating provides significant thermal margin.
Manufacturer	RALEC	RALEC	-	-	RALEC — Same manufacturer, likely similar process and performance.
Tcr	Unknown	-	±50 ppm/°C	±70 ppm/°C	±50 ppm/°C / ±70 ppm/°C — Excellent TCR, but must be compared to target's spec.; WSLF25122L000FEA: TCR differs from target's unspecified value; must be verified.
Tolerance	±1%	-	-	±1%	±1% — Identical precision.

Application & sourcing insights

Questions & answers

LR2512-23R002F4 from the same manufacturer, RALEC, is an excellent upgrade path, offering a higher 3W power rating in the same 2512 package. Other options from Vishay and RESI provide even higher power ratings.