Is there a pin-compatible replacement for RTT025002FTH?

No pin-compatible replacements were identified that meet the required 1.5x power rating safety factor. While some 0402 resistors have similar resistance, their power rating is identical, not higher, posing a potential reliability risk under the specified engineering rules.

What risks should I check before replacing RTT025002FTH?

The main risks are package size and power dissipation. Alternatives may be in larger packages (0603, 0805) requiring a new PCB layout. Also, ensure the replacement's power and voltage ratings provide sufficient margin for your application's operating conditions.

RTT025002FTH Alternatives, Datasheet & Cross Reference | RALEC

RTT025002FTH is a 50kΩ 1% 0.0625W thick film resistor in a 0402 package. Finding a direct drop-in replacement is challenging due to strict power rating safety requirements, making larger-package functional alternatives the most viable path.

AI replacement insight

Package riskhigh

No same-package alternatives meet power rules; PCB redesign is required.

Electrical risklow

Recommended alternatives have superior power and voltage ratings.

Can it be replaced directly?

No direct drop-in replacements were found that satisfy the engineering rule for a 1.5x power rating safety margin.

Best replacement path

Functional alternatives with larger packages (0603/0805) and higher power ratings are recommended.

Main risk

Package mismatch. All viable alternatives require a different PCB footprint, which constitutes a high package risk.

Recommended alternatives

A functional alternative in a larger 0603 package with higher power and voltage ratings.

View details

Alternative comparison matrix

Feature / factor	RTT025002FTH	0603WAF4992T5E	0805W8F4992T5E	Compatibility / risk
Package	0402	0603	0805	0603 / 0805 — Requires PCB layout change.; 0805W8F4992T5E: Requires PCB layout change.
Resistance	50 kΩ	49.9 kΩ	49.9 kΩ	49.9 kΩ — Difference is less than tolerance.; 0805W8F4992T5E: Difference is less than tolerance.
Power	0.0625 W	0.1 W	0.125 W	0.1 W / 0.125 W — Higher power rating provides more margin.; 0805W8F4992T5E: Higher power rating provides more margin.
Voltage	50 V	75 V	150 V	75 V / 150 V — Higher voltage rating.; 0805W8F4992T5E: Higher voltage rating.
Tcr	±100 ppm/°C	±100 ppm/°C	Not specified	±100 ppm/°C / Not specified — Temperature coefficient matches.; 0805W8F4992T5E: TCR data missing for candidate.

Application & sourcing insights

Questions & answers

The best alternative depends on your design flexibility. If you can change the PCB layout, parts like UNI-ROYAL's 0603WAF4992T5E offer higher power ratings in a slightly larger package. No direct drop-in replacements were found that meet strict power safety margins.