ESR18EZPJ394 Equivalent & Substitute Parts

Part Overview

The ESR18EZPJ394 is a 390 kOhms ±5% 0.5W thick film chip resistor in 1206 package manufactured by Rohm Semiconductor. This component is designed for automotive applications and meets AEC-Q200 qualification standards with pulse withstanding capability. The part is currently active in production with 2200 units in stock. Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and application-specific performance requirements.

Substiute Parts

ESR18EZPJ394

Rohm SemiconductorIn Stock: 2222ESR18EZPJ394 Datasheet

Current PartRFQ

ERJ-P08J394V

Panasonic Electronic ComponentsIn Stock: 14796ERJ-P08J394V Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ESR18EZPJ394 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 390 kOhms
• Tolerance: ±5%
• Package / Case: 1206 (3216 Metric)
• Composition: Thick Film
• Temperature Coefficient: ±200ppm/°C
• Operating Temperature Range: -55°C ~ 155°C
• Automotive Rating: AEC-Q200
• Features: Pulse Withstanding
• RoHS Status: ROHS3 Compliant

Allowable Variation:

• Power Rating: Substitute parts may have equal or higher power dissipation capacity while maintaining identical physical dimensions and electrical characteristics.

The ERJ-P08J394V from Panasonic Electronic Components qualifies as a substitute part. It maintains all mandatory parameters while offering an upgraded power rating of 0.667W (2/3W) compared to the original 0.5W specification. This upgrade provides enhanced thermal margin without affecting circuit compatibility or package footprint.

Parameter Comparison

Engineering Selection Recommendations

Both the ESR18EZPJ394 and ERJ-P08J394V are active production components with full AEC-Q200 automotive qualification and ROHS3 compliance. Selection between these parts should be based on application power dissipation requirements and supply availability.

The ESR18EZPJ394 is suitable for applications where the 0.5W power rating meets thermal design specifications. The ERJ-P08J394V provides identical electrical and mechanical characteristics with increased power dissipation capacity (0.667W), making it applicable to designs requiring higher thermal margin or where power dissipation approaches the original specification limit.

Both parts maintain identical package dimensions, temperature performance, and automotive qualification status, ensuring direct substitution compatibility at the circuit board level.

Frequently Asked Questions (FAQ)

Q: Can ERJ-P08J394V replace ESR18EZPJ394 in existing designs?

A: Yes. The ERJ-P08J394V is a direct substitute with identical resistance, tolerance, package, temperature coefficient, operating range, and automotive qualification. The higher power rating (0.667W vs 0.5W) does not affect circuit compatibility.

Q: Are there physical dimension differences between these parts?

A: Both parts use the 1206 (3216 Metric) package with identical length (0.126" / 3.20mm) and width (0.063" / 1.60mm). Maximum seated height differs slightly (0.026" vs 0.028"), which does not affect PCB assembly or clearance in standard designs.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both ESR18EZPJ394 and ERJ-P08J394V carry AEC-Q200 qualification and are suitable for automotive applications requiring pulse withstanding thick film resistors.

Q: What is the significance of the higher power rating on the substitute part?

A: The ERJ-P08J394V's 0.667W rating provides additional thermal headroom compared to the 0.5W original specification. This allows operation at higher power dissipation levels while maintaining the same physical package and electrical characteristics.

Q: Are moisture sensitivity levels identical?

A: Yes. Both parts have Moisture Sensitivity Level 1 (Unlimited), indicating no moisture-related handling restrictions during storage or assembly.