What risks should I check before replacing WR04X2002FTL?

Before replacing WR04X2002FTL, verify the substitute's resistance tolerance and value. Some alternatives have a wider ±5% tolerance, while others have slightly different resistance values (e.g., 19.6kΩ). Always confirm these parameters are acceptable for your circuit design.

WR04X2002FTL Alternatives, Datasheet & Cross Reference | Walsin Technology Corporation

WR04X2002FTL is a common 20kΩ, 1% tolerance, 1/16W resistor in a 0402 package. Several pin-compatible and parametric alternatives are available from various manufacturers, offering flexibility in sourcing.

AI replacement insight

Package risklow

All suggested alternatives use the same 0402 package, ensuring physical compatibility.

Electrical riskmedium

Some alternatives have different resistance values or wider tolerance. These require engineering review.

Can it be replaced directly?

Direct replacement for WR04X2002FTL should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.

Best replacement path

RTT022002FTH from RALEC is a strong pin-to-pin candidate, matching all key electrical and physical specifications.

Main risk

The main risk when substituting is using a part with a wider tolerance (e.g., ±5%) or a different resistance value, which requires circuit analysis.

Recommended alternatives

Matches all key specs: 20kΩ, ±1%, 1/16W, 0402 package. A likely direct replacement.

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Alternative comparison matrix

Feature / factor	WR04X2002FTL	RTT022002FTH	FRC0402J203 TS	FRC0402F1962TS	Compatibility / risk
Resistance	20kΩ	20kΩ	20kΩ	19.6kΩ	20kΩ / 19.6kΩ — Exact match.; FRC0402J203 TS: Exact match.; FRC0402F1962TS: Slightly lower resistance (-2%).
Tolerance	±1%	±1%	±5%	±1%	±1% / ±5% — Exact match.; FRC0402J203 TS: Wider tolerance than target.; FRC0402F1962TS: Exact match.
Power	1/16W	1/16W	1/16W	-	1/16W — Exact match.; FRC0402J203 TS: Exact match.
Package	0402	0402	0402	0402	0402 — Exact match.; FRC0402J203 TS: Exact match.; FRC0402F1962TS: Exact match.
Tcr	≤ ±100 ppm/°C	±100 ppm/°C	-	-	±100 ppm/°C — Within target specification.

Application & sourcing insights

Questions & answers

Verified drop-in options for WR04X2002FTL 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.