ERJ-S14F3403U Equivalent & Substitute Parts

Part Overview

The ERJ-S14F3403U is a 340 kOhms ±1% 0.5W thick film chip resistor in 1210 (3225 Metric) package manufactured by Panasonic Electronic Components. This part features anti-sulfur coating and automotive AEC-Q200 qualification, designed for high-reliability applications in automotive and industrial environments. The part is currently in active production status.

Substitute parts become necessary when the primary part faces supply constraints, inventory limitations, or when design requirements permit selection from qualified alternatives that meet identical electrical and mechanical specifications.

Substiute Parts

ERJ-S14F3403U

Panasonic Electronic ComponentsIn Stock: 1109ERJ-S14F3403U Datasheet

Current PartRFQ

ERJ-14NF3403U

Panasonic Electronic ComponentsIn Stock: 5389ERJ-14NF3403U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ERJ-S14F3403U is determined by the following mandatory parameters:

• Resistance value: 340 kOhms
• Tolerance: ±1%
• Power rating: 0.5W (1/2W)
• Package: 1210 (3225 Metric)
• Composition: Thick Film
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C ~ 155°C
• Automotive qualification: AEC-Q200
• Moisture sensitivity: MSL 1

The ERJ-14NF3403U qualifies as a direct substitute, meeting all electrical and mechanical parameters. This part is listed in the primary part's substitute field and maintains identical specifications across all critical selection criteria.

Parameter Comparison

Engineering Selection Recommendations

The ERJ-S14F3403U is the preferred selection for new designs due to its active product status and ROHS3 compliance. This part meets all automotive and industrial reliability requirements with AEC-Q200 qualification and anti-sulfur coating.

The ERJ-14NF3403U is electrically and mechanically equivalent but carries a "Not For New Designs" status and does not meet ROHS3 compliance. This substitute is suitable only for legacy system maintenance, repair, or applications where RoHS compliance is not required. Selection of this substitute should be limited to situations where primary part availability is constrained and design flexibility permits use of a non-compliant alternative.

Frequently Asked Questions (FAQ)

Q: Can ERJ-14NF3403U be used as a direct replacement for ERJ-S14F3403U in new automotive designs?

A: No. While the ERJ-14NF3403U meets all electrical and mechanical specifications, it is designated "Not For New Designs" and does not comply with ROHS3 standards. New designs must use the ERJ-S14F3403U.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both parts use the 1210 (3225 Metric) package with identical dimensions: 0.126" L x 0.098" W (3.20mm x 2.50mm) and maximum seated height of 0.028" (0.70mm).

Q: Do both parts meet AEC-Q200 automotive qualification?

A: Yes. Both the ERJ-S14F3403U and ERJ-14NF3403U carry AEC-Q200 qualification and operate across the identical temperature range of -55°C to 155°C.

Q: What is the key difference between these two parts?

A: The primary differences are product status and regulatory compliance. The ERJ-S14F3403U is active production with ROHS3 compliance, while the ERJ-14NF3403U is not recommended for new designs and is RoHS non-compliant.

Q: Can these parts be used interchangeably in existing assemblies?

A: Electrical and mechanical interchangeability is confirmed. However, substitution decisions must account for the product status designation and compliance requirements of the application.