Is there a pin-compatible replacement for HP122WJ0104T4E?

While parts like RC2512JK-7W100KL are pin-compatible in the 2512 package, they are not electrically equivalent due to a lower voltage rating. This makes them a risky, non-drop-in replacement.

What risks should I check before replacing HP122WJ0104T4E?

The most critical risk is the maximum working voltage. The target is rated for 300V, and many similar 2512 resistors are only rated for 200V. Using a lower-voltage part can cause failure.

HP122WJ0104T4E Alternatives, Datasheet & Cross Reference | UNI-ROYAL

Finding a substitute for the UNI-ROYAL HP122WJ0104T4E, a 100kΩ 2W 2512 resistor, requires careful attention to its 300V working voltage. Many similar parts have lower voltage ratings.

AI replacement insight

Electrical riskhigh

Many similar parts have a lower voltage rating (200V vs 300V), creating a high risk of failure if not verified.

Package risklow

The 2512 package is standard, and many alternatives share the same footprint.

Can it be replaced directly?

No direct drop-in replacement has been identified; available alternatives have a lower voltage rating, which poses a significant risk.

Best replacement path

Search for 2W, 2512, 100kΩ thick film resistors with a specified working voltage of 300V or higher.

Main risk

The primary risk is the lower maximum working voltage of common alternatives, which could lead to component failure.

Recommended alternatives

A 100kΩ, 2W resistor in a 2512 package with tighter tolerance (1%), but a lower voltage rating.

View details

Alternative comparison matrix

Feature / factor	HP122WJ0104T4E	RC2512FK-7W100KL	RC2512JK-7W100KL	Compatibility / risk
Package	2512 (6432 metric)	2512 (6432 Metric)	2512 (6432 Metric)	2512 (6432 Metric) — Form factor matches.; RC2512JK-7W100KL: Form factor matches.
Resistance	100 kΩ	100 kΩ	100 kΩ	100 kΩ — Resistance value matches.; RC2512JK-7W100KL: Resistance value matches.
Tolerance	±5%	±1%	±5%	±1% / ±5% — Tighter tolerance is usually acceptable.; RC2512JK-7W100KL: Tolerance matches.
Voltage	300 V	200 V	200 V	200 V — Lower max working voltage.; RC2512JK-7W100KL: Lower max working voltage.
Power	2 W	-	2 W	2 W — Power rating matches.

Application & sourcing insights

Questions & answers

Currently, no direct alternative matches all key specs. Candidates like Yageo's RC2512 series match resistance and power but have a lower 200V rating compared to the target's 300V.