ESR25JZPJ394 Equivalent & Substitute Parts

Part Overview

The ESR25JZPJ394 is a 390 kOhms ±5% thick film chip resistor manufactured by Rohm Semiconductor in the 1210 (3225 Metric) package. Rated for 0.667W (2/3W) power dissipation, this component meets AEC-Q200 automotive qualification standards and features pulse withstanding capability. The part is currently in active production status. Substitute parts may be required due to inventory constraints, supply chain disruptions, or design optimization needs while maintaining equivalent electrical and mechanical performance.

Substiute Parts

ESR25JZPJ394

Rohm SemiconductorIn Stock: 1052ESR25JZPJ394 Datasheet

Current PartRFQ

ERJ-P14J394U

Panasonic Electronic ComponentsIn Stock: 8210ERJ-P14J394U Datasheet

DirectRFQ

ERJ-14YJ394U

Panasonic Electronic ComponentsIn Stock: 25352ERJ-14YJ394U Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ESR25JZPJ394 is determined by the following critical parameters:

• Resistance Value: Must be 390 kOhms
• Tolerance: Must be ±5%
• Package: Must be 1210 (3225 Metric)
• Composition: Must be Thick Film
• Temperature Coefficient: Must be ±200ppm/°C
• Operating Temperature Range: Must be -55°C ~ 155°C
• Automotive Compliance: Must meet AEC-Q200
• RoHS Status: Must be ROHS3 Compliant

The substitute parts identified (ERJ-P14J394U and ERJ-14YJ394U) meet all critical electrical parameters. Both are manufactured by Panasonic Electronic Components and maintain identical resistance, tolerance, package, composition, temperature coefficient, operating range, and automotive qualification. The primary difference is power rating: substitute parts are rated at 0.5W (1/2W) compared to the main part's 0.667W (2/3W). This represents a lower power dissipation capability and must be evaluated against circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

ERJ-P14J394U is the primary direct substitute. This part maintains active production status and meets all electrical and mechanical specifications equivalent to the ESR25JZPJ394. The reduced power rating (0.5W vs. 0.667W) requires circuit-level evaluation to confirm adequate thermal margin. The marginal height increase (0.028" vs. 0.026") is within typical PCB assembly tolerances for 1210 packages.

ERJ-14YJ394U carries a "Not For New Designs" status and should be used only when ERJ-P14J394U is unavailable. This designation indicates the manufacturer is phasing out this product line. While electrically and mechanically equivalent, new designs should prioritize ERJ-P14J394U for long-term supply chain stability.

Both substitutes are ROHS3 compliant and AEC-Q200 qualified, maintaining automotive application eligibility.

Frequently Asked Questions (FAQ)

Q: Can ERJ-P14J394U be used as a direct replacement for ESR25JZPJ394?

A: Yes, with power rating consideration. The ERJ-P14J394U is electrically and mechanically equivalent in all critical parameters. However, the power rating is reduced from 0.667W to 0.5W. Circuit design must confirm that actual power dissipation does not exceed 0.5W at maximum operating conditions.

Q: What is the significance of the "Not For New Designs" status on ERJ-14YJ394U?

A: This designation indicates the manufacturer is discontinuing this product line. While the part remains functionally equivalent, it should not be selected for new circuit designs due to uncertain long-term availability. ERJ-P14J394U is the recommended alternative.

Q: Are there physical compatibility concerns with the substitute parts?

A: The substitute parts have a maximum seated height of 0.028" compared to 0.026" for the main part. This 0.002" (0.05mm) difference is negligible for standard PCB assembly and does not affect footprint compatibility in the 1210 package.

Q: Do the substitute parts maintain automotive qualification?

A: Yes. Both ERJ-P14J394U and ERJ-14YJ394U are AEC-Q200 qualified and ROHS3 compliant, meeting automotive application requirements equivalent to the ESR25JZPJ394.

Q: What is the primary limiting factor when selecting a substitute?

A: Power dissipation capability. The substitute parts are rated at 0.5W versus the main part's 0.667W. Circuit analysis must confirm that the actual power dissipated across the resistor remains within the 0.5W limit under all operating conditions, including worst-case temperature and tolerance scenarios.