Is there a pin-compatible replacement for ARG05FTC2491?

Yes, several 0805 resistors are pin-compatible, such as Yageo's RC0805FR-072K49L. However, key electrical parameters like the temperature coefficient (TCR) may differ and require review.

What risks should I check before replacing ARG05FTC2491?

The main risk is a mismatch in the Temperature Coefficient of Resistance (TCR). The target is a precision part (±25ppm/°C); using a part with a higher TCR (e.g., ±100ppm/°C) can affect circuit stability over temperature.

ARG05FTC2491 Alternatives, Datasheet & Cross Reference | Viking Tech

Finding a substitute for the Viking Tech ARG05FTC2491 involves matching its 2.49kΩ resistance, 0805 package, and ±25ppm/°C TCR. Alternatives must be carefully checked for temperature stability.

AI replacement insight

Electrical riskmedium

TCR mismatch can cause performance degradation in temperature-sensitive circuits.

Package risklow

Standard 0805 package is widely available and compatible.

Can it be replaced directly?

No direct drop-in replacement has been identified. The closest candidates have a worse Temperature Coefficient (TCR), which may impact performance in precision circuits.

Best replacement path

Search for thin film 0805 resistors with 2.49kΩ resistance, ±1% tolerance, and TCR of ±25ppm/°C or better.

Main risk

The primary risk is substituting a general-purpose resistor with a higher TCR (e.g., ±100ppm/°C) for this precision part (±25ppm/°C), causing drift with temperature changes.

Recommended alternatives

A form and function compatible 0805 resistor, but with a higher temperature coefficient (TCR) than the original part.

View details

Alternative comparison matrix

Feature / factor	ARG05FTC2491	FRC0805F2491TS	RC0805FR-072K49L	Compatibility / risk
Package	0805	0805	0805	0805 — Package size matches.; RC0805FR-072K49L: Package size matches.
Resistance	2.49kΩ	2.49kΩ	2.49kΩ	2.49kΩ — Resistance value matches.; RC0805FR-072K49L: Resistance value matches.
Power	0.125W	0.125W	0.125W	0.125W — Power rating matches.; RC0805FR-072K49L: Power rating matches.
Tcr	±25ppm/℃	±100 ppm/°C	±100 ppm/°C	±100 ppm/°C — Candidate TCR is worse, less stable.; RC0805FR-072K49L: Candidate TCR is worse, less stable.
Technology	Thin Film (implied)	-	Thick Film	Thick Film — General purpose vs. precision.

Application & sourcing insights

Questions & answers

The best alternative would be another thin film 0805 resistor with 2.49kΩ resistance, ≥0.125W power, and a TCR of ±25ppm/°C or better. Candidates with higher TCR exist but require circuit validation.