Is there a pin-compatible replacement for AR03FTC1004?

Yes, parts like Vishay's CRCW06031M00FKEA are pin-compatible in the 0603 package. However, they are not functionally identical due to being thick film with a worse temperature coefficient, which requires careful circuit evaluation.

What risks should I check before replacing AR03FTC1004?

Key risks include: 1) Increased resistance drift with temperature due to higher TCR. 2) Different noise characteristics from using thick film instead of thin film. 3) Ensure the replacement's power and voltage ratings are sufficient.

AR03FTC1004 Alternatives, Datasheet & Cross Reference | Viking Tech

Finding a substitute for the Viking AR03FTC1004 1MΩ precision resistor requires matching its ±25ppm/°C TCR and thin film technology. Many alternatives are thick film with higher TCR, posing a risk to circuit stability.

AI replacement insight

Electrical riskhigh

TCR and technology mismatch will impact circuit precision and stability.

Package risklow

All candidates match the 0603 package, ensuring physical compatibility.

Can it be replaced directly?

No direct drop-in replacements were found among the candidates reviewed. All alternatives are thick film with a higher temperature coefficient, requiring engineering review.

Best replacement path

Search for 0603 thin film resistors with 1MΩ resistance, ±1% tolerance, and a TCR of ±25ppm/°C or better.

Main risk

The primary risk is performance degradation due to the higher temperature coefficient (TCR) and different technology (thick film vs. thin film) of the alternatives.

Recommended alternatives

A 0603 1MΩ resistor with higher power rating, but its thick film technology and higher TCR require review for precision circuits.

View details

Alternative comparison matrix

Feature / factor	AR03FTC1004	CRCW06031M00FKEA	WR06X1004FTL	Compatibility / risk
Package	0603	0603	0603	0603 — Package size matches.; WR06X1004FTL: Package size matches.
Resistance	1MΩ	1MΩ	1MΩ	1MΩ — Nominal resistance matches.; WR06X1004FTL: Nominal resistance matches.
Technology	Thin Film	Thick Film	Thick Film	Thick Film — Technology differs, affecting stability and noise.; WR06X1004FTL: Technology differs, affecting stability and noise.
Tcr	±25ppm/°C	±100 ppm/K	Not specified, est. >±100ppm/°C	±100 ppm/K / Not specified, est. >±100ppm/°C — TCR is 4x worse, impacting precision.; WR06X1004FTL: General purpose part, TCR is much worse.
Power	0.0625W	0.1W	0.1W	0.1W — Higher power rating provides more margin.; WR06X1004FTL: Higher power rating provides more margin.

Application & sourcing insights

Questions & answers

The best alternatives are other thin film 0603 resistors with 1MΩ resistance and a TCR of ±25ppm/°C or better. The reviewed candidates are downgrades and not recommended for precision circuits.