ERJ-S14F2940U Equivalent & Substitute Parts

Part Overview

The ERJ-S14F2940U is a 294 Ohms ±1% 0.5W thick film chip resistor in 1210 (3225 Metric) package manufactured by Panasonic Electronic Components. This component 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 with 1027 units in stock.

Substitute parts become necessary when the primary part experiences supply constraints, extended lead times, or when design flexibility permits selection from qualified alternatives that meet identical electrical and mechanical specifications.

Substiute Parts

ERJ-S14F2940U

Panasonic Electronic ComponentsIn Stock: 1037ERJ-S14F2940U Datasheet

Current PartRFQ

ERJ-14NF2940U

Panasonic Electronic ComponentsIn Stock: 7676ERJ-14NF2940U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ERJ-S14F2940U is determined by strict equivalence across the following parameters:

• Resistance value: 294 Ohms
• 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
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity: MSL 1

The ERJ-14NF2940U from Panasonic meets all electrical and mechanical parameters required for direct substitution. Additional cross-reference parts (AF1210FR-07294RL, AC1210FR-07294RL, CRCW1210294RFKEAHP, RMCF1210FT294R, CRCW1210294RFKTA) are documented as secondary alternatives within the substitute chain.

Parameter Comparison

Engineering Selection Recommendations

The ERJ-S14F2940U is the preferred selection for new designs due to its active production status. The ERJ-14NF2940U provides electrical and mechanical equivalence but carries a "Not For New Designs" designation, indicating it is in mature or end-of-life phase. Both parts satisfy identical AEC-Q200 automotive qualification requirements and ROHS3 compliance mandates.

Selection between these parts should be based on supply availability and design phase. For active development programs, the ERJ-S14F2940U is the appropriate choice. For legacy system support or when supply of the primary part is constrained, the ERJ-14NF2940U remains functionally equivalent for applications where the "Not For New Designs" status does not conflict with procurement policies.

Frequently Asked Questions (FAQ)

Q: Can ERJ-14NF2940U be used as a direct replacement for ERJ-S14F2940U?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters: 294 Ohms ±1%, 0.5W power rating, 1210 package, ±100ppm/°C temperature coefficient, -55°C to 155°C operating range, and AEC-Q200 automotive qualification. The primary difference is product status; ERJ-14NF2940U is not recommended for new designs.

Q: What does "Not For New Designs" mean for the ERJ-14NF2940U?

A: This designation indicates the part is in mature production phase and may have limited availability or extended lead times. Panasonic recommends using the ERJ-S14F2940U for new product development. Existing designs using ERJ-14NF2940U can continue without modification.

Q: Are there package compatibility concerns between these parts?

A: No. Both parts use identical 1210 (3225 Metric) packaging with matching footprint dimensions (0.126" L x 0.098" W, 3.20mm x 2.50mm) and height (0.028" maximum seated height). PCB layout and assembly processes require no modification.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both ERJ-S14F2940U and ERJ-14NF2940U carry AEC-Q200 automotive qualification and ROHS3 compliance certification, suitable for automotive and industrial applications requiring high reliability standards.

Q: What is the moisture sensitivity difference between these parts?

A: Both parts have identical Moisture Sensitivity Level (MSL) rating of 1, indicating unlimited shelf life without special moisture control measures during storage or handling.