ESR03EZPJ3R9 Equivalent & Substitute Parts

Part Overview

The ESR03EZPJ3R9 is a 3.9 Ohm ±5% 0.25W thick film chip resistor in 0603 (1608 Metric) package manufactured by Rohm Semiconductor. This component is rated for automotive applications under AEC-Q200 standard with pulse withstanding capability. The part is currently active in production with 1408 units in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for this automotive-grade resistor specification.

Substiute Parts

ESR03EZPJ3R9

Rohm SemiconductorIn Stock: 1510ESR03EZPJ3R9 Datasheet

Current PartRFQ

ERJ-PA3J3R9V

Panasonic Electronic ComponentsIn Stock: 10302ERJ-PA3J3R9V Datasheet

DirectRFQ

ERJ-3BQJ3R9V

Panasonic Electronic ComponentsIn Stock: 1056ERJ-3BQJ3R9V Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ESR03EZPJ3R9 are classified based on electrical and mechanical parameter compatibility within automotive-grade thick film resistor specifications.

Direct Substitute (Electrical Upgrade): ERJ-PA3J3R9V (Panasonic) — Maintains identical resistance (3.9 Ohms), tolerance (±5%), package (0603), temperature coefficient (±200ppm/°C), operating temperature range (-55°C ~ 155°C), and AEC-Q200 automotive rating. The power rating increases from 0.25W to 0.333W (1/3W), providing enhanced thermal capability while remaining pin-compatible and functionally interchangeable.

Similar Substitute (Electrical Equivalent): ERJ-3BQJ3R9V (Panasonic) — Matches all critical electrical parameters: resistance (3.9 Ohms), tolerance (±5%), power rating (0.25W), package (0603), temperature coefficient (±200ppm/°C), operating temperature range (-55°C ~ 155°C), and AEC-Q200 automotive rating. Differs only in application feature designation (Current Sense vs. Pulse Withstanding).

Substitution eligibility is determined by matching resistance value, tolerance, power rating or higher, package type, temperature coefficient, operating temperature range, and AEC-Q200 compliance.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active production status and full AEC-Q200 automotive compliance with ROHS3 certification and MSL 1 moisture sensitivity rating, ensuring regulatory and environmental requirement alignment.

ERJ-PA3J3R9V is suitable for applications where increased power dissipation capability is beneficial without circuit redesign, as the 0.333W rating provides thermal margin over the 0.25W specification while maintaining identical electrical characteristics and package footprint.

ERJ-3BQJ3R9V provides direct electrical and mechanical equivalence to the ESR03EZPJ3R9 with identical power rating and package specifications, differing only in application feature classification (Current Sense designation).

Selection between substitute parts depends on inventory availability, lead time requirements, and application-specific thermal design margins. All three parts are functionally interchangeable within the specified electrical and mechanical parameters.

Frequently Asked Questions (FAQ)

Q: Can ERJ-PA3J3R9V replace ESR03EZPJ3R9 in existing designs? A: Yes. ERJ-PA3J3R9V is electrically and mechanically compatible. The increased power rating (0.333W vs. 0.25W) does not affect circuit operation and provides additional thermal capability. The 0603 package footprint, resistance value, tolerance, temperature coefficient, and operating temperature range are identical.

Q: What is the difference between ERJ-PA3J3R9V and ERJ-3BQJ3R9V? A: Both parts match the ESR03EZPJ3R9 in resistance (3.9 Ohms), tolerance (±5%), power rating (0.25W), package (0603), and automotive rating (AEC-Q200). ERJ-PA3J3R9V has a higher power rating (0.333W). ERJ-3BQJ3R9V carries a Current Sense feature designation while the original part specifies Pulse Withstanding.

Q: Are all substitute parts AEC-Q200 qualified? A: Yes. ESR03EZPJ3R9, ERJ-PA3J3R9V, and ERJ-3BQJ3R9V all carry AEC-Q200 automotive qualification with ROHS3 compliance and MSL 1 moisture sensitivity rating.

Q: Can these parts be used interchangeably in high-temperature automotive applications? A: Yes. All three parts support the identical operating temperature range of -55°C ~ 155°C with ±200ppm/°C temperature coefficient, meeting automotive thermal requirements.

Q: Is package compatibility guaranteed across all substitute parts? A: Yes. All parts use the 0603 (1608 Metric) package with identical physical dimensions (0.063" L x 0.031" W, 1.60mm x 0.80mm) and maximum seated height (0.022", 0.55mm), ensuring PCB footprint compatibility.