ESR03EZPJ1R8 Equivalent & Substitute Parts

Part Overview

The ESR03EZPJ1R8 is a 1.8 Ohm ±5% thick film chip resistor manufactured by Rohm Semiconductor in 0603 (1608 Metric) package format. This component is rated for 0.25W (1/4W) power dissipation and meets automotive AEC-Q200 qualification standards with pulse withstanding capability. The part is currently active in production with 2918 units in stock. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same package and rating standards.

Substiute Parts

ESR03EZPJ1R8

Rohm SemiconductorIn Stock: 3021ESR03EZPJ1R8 Datasheet

Current PartRFQ

ERJ-PA3J1R8V

Panasonic Electronic ComponentsIn Stock: 16983ERJ-PA3J1R8V Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ESR03EZPJ1R8 is determined by the following critical parameters:

Resistance value must be 1.8 Ohms with ±5% tolerance to maintain circuit design specifications. Package format must be 0603 (1608 Metric) to ensure mechanical and electrical compatibility with PCB layouts. Composition must be thick film to preserve thermal and frequency response characteristics. Automotive AEC-Q200 qualification is required for applications demanding automotive-grade reliability. Temperature coefficient of ±200ppm/°C and operating range of -55°C ~ 155°C must be maintained. RoHS3 compliance and MSL 1 rating ensure regulatory and environmental compatibility.

The ERJ-PA3J1R8V from Panasonic Electronic Components meets all these criteria. The primary difference is the power rating: ERJ-PA3J1R8V is rated at 0.333W (1/3W) compared to the ESR03EZPJ1R8 at 0.25W (1/4W). This represents a higher power capability, making it suitable for applications where the original part is specified or where additional thermal margin is beneficial.

Parameter Comparison

Engineering Selection Recommendations

Both the ESR03EZPJ1R8 and ERJ-PA3J1R8V are active production components with ROHS3 compliance and AEC-Q200 automotive qualification. Selection between these parts should be based on application power dissipation requirements and supply chain availability.

The ESR03EZPJ1R8 is appropriate for designs specified at 0.25W (1/4W) power rating. The ERJ-PA3J1R8V provides higher power capability at 0.333W (1/3W) and is suitable for applications where additional thermal margin or higher power dissipation is required within the same physical footprint. Both parts maintain identical electrical characteristics in resistance, tolerance, temperature coefficient, and operating temperature range, ensuring functional equivalence in circuit operation.

Frequently Asked Questions (FAQ)

Q: Can ERJ-PA3J1R8V replace ESR03EZPJ1R8 in all applications?

A: Yes, from an electrical and mechanical standpoint. The ERJ-PA3J1R8V has identical resistance, tolerance, temperature coefficient, and operating range. The higher power rating (0.333W vs 0.25W) provides additional thermal capability without affecting circuit performance. Verify that the higher power rating does not introduce unintended thermal characteristics in your specific application.

Q: Are the physical dimensions identical?

A: Yes. Both parts use the 0603 (1608 Metric) package with identical length (0.063" / 1.60mm), width (0.031" / 0.80mm), and maximum seated height (0.022" / 0.55mm). PCB layout and assembly compatibility is maintained.

Q: Do both parts meet automotive standards?

A: Yes. Both ESR03EZPJ1R8 and ERJ-PA3J1R8V carry AEC-Q200 automotive qualification and pulse withstanding capability, making them suitable for automotive applications.

Q: What is the difference in power rating significance?

A: The ESR03EZPJ1R8 is rated at 0.25W (1/4W), while ERJ-PA3J1R8V is rated at 0.333W (1/3W). This difference reflects thermal dissipation capability. If your circuit dissipates power within the 0.25W specification, either part functions identically. The higher rating on the Panasonic part provides additional margin.

Q: Are both parts RoHS compliant?

A: Yes. Both parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, meeting environmental and regulatory requirements.

Q: What is the temperature coefficient impact?

A: Both parts have identical temperature coefficient of ±200ppm/°C and operating range of -55°C ~ 155°C. Resistance variation with temperature is equivalent across both components.