ERJ-S03F3R90V Equivalent & Substitute Parts

Part Overview

The ERJ-S03F3R90V is a 3.9 Ohm ±1% 0.1W chip resistor manufactured by Panasonic Electronic Components in the 0603 (1608 Metric) package. This thick film resistor features anti-sulfur coating and automotive AEC-Q200 qualification, making it suitable for automotive and industrial applications requiring high reliability. The part is currently active in production with 790 units in stock. Substitute parts are identified when equivalent electrical and mechanical specifications are required due to inventory constraints, supply chain considerations, or design flexibility within the same performance envelope.

Substiute Parts

ERJ-S03F3R90V

Panasonic Electronic ComponentsIn Stock: 861ERJ-S03F3R90V Datasheet

Current PartRFQ

ERJ-U03F3R90V

Panasonic Electronic ComponentsIn Stock: 4758ERJ-U03F3R90V Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ERJ-S03F3R90V is based on electrical and mechanical parameter equivalence. The substitute part must satisfy all of the following criteria:

• Resistance value: 3.9 Ohms
• Tolerance: ±1%
• Power rating: 0.1W (1/10W)
• Package: 0603 (1608 Metric)
• Composition: Thick Film
• Features: Anti-Sulfur, Automotive AEC-Q200
• Temperature coefficient: -100 / +600 ppm/°C
• Operating temperature range: -55°C ~ 155°C
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity level: 1 (Unlimited)

Parts meeting these specifications are electrically and mechanically interchangeable and can be used in direct replacement applications without circuit redesign or board layout modification.

Parameter Comparison

Engineering Selection Recommendations

The ERJ-U03F3R90V is a direct equivalent substitute for the ERJ-S03F3R90V. Both parts are manufactured by Panasonic Electronic Components and share identical electrical specifications, mechanical dimensions, and compliance certifications. Both parts maintain active production status and carry ROHS3 compliance and REACH Unaffected designation.

The primary distinction between the two parts is the series designation: ERJ-S03 versus ERJ-U03. This series difference does not affect electrical performance, thermal characteristics, or mechanical compatibility. Both parts are qualified to automotive AEC-Q200 standards and feature anti-sulfur coating suitable for harsh operating environments.

Selection between these parts should be based on availability and supply chain requirements. The ERJ-U03F3R90V currently maintains higher inventory levels (4652 units) compared to the ERJ-S03F3R90V (790 units), making it a viable alternative for high-volume production requirements.

Frequently Asked Questions (FAQ)

Q: Can the ERJ-U03F3R90V be used as a direct replacement for the ERJ-S03F3R90V on existing circuit boards?

A: Yes. The ERJ-U03F3R90V is electrically and mechanically equivalent to the ERJ-S03F3R90V. Both parts have identical resistance values, tolerance, power ratings, package dimensions, and operating specifications. No circuit redesign or board layout modification is required.

Q: Are there any differences in the 0603 package dimensions between these two parts?

A: No. Both parts conform to the 0603 (1608 Metric) package standard with identical dimensions of 0.063" L x 0.031" W (1.60mm x 0.80mm) and maximum seated height of 0.022" (0.55mm). They are footprint-compatible.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both the ERJ-S03F3R90V and ERJ-U03F3R90V carry AEC-Q200 automotive qualification and feature anti-sulfur coating, making them suitable for automotive and industrial applications requiring high reliability standards.

Q: What is the significance of the series designation difference (ERJ-S03 versus ERJ-U03)?

A: The series designation indicates different product lines within Panasonic's resistor portfolio. However, for the 3.9 Ohm ±1% 0.1W 0603 specification, both series share identical electrical and mechanical characteristics. The series difference does not impact performance or compatibility.

Q: Are both parts RoHS compliant?

A: Yes. Both the ERJ-S03F3R90V and ERJ-U03F3R90V are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic components.

Q: What is the moisture sensitivity level for these parts?

A: Both parts have a Moisture Sensitivity Level (MSL) of 1, which indicates unlimited shelf life without special moisture control measures during storage and handling.