ERJ-S14F31R6U Equivalent & Substitute Parts

Part Overview

The ERJ-S14F31R6U is a 31.6 Ohm ±1% thick film chip resistor manufactured by Panasonic Electronic Components in the 1210 (3225 Metric) package format. This component is rated for 0.5W power dissipation and features anti-sulfur coating with automotive AEC-Q200 qualification. The part is currently in active production status with 924 units available in inventory.

Substitute parts are identified when design requirements necessitate alternative sourcing due to supply constraints, manufacturing discontinuation, or equivalent performance specifications across different manufacturers.

Substiute Parts

ERJ-S14F31R6U

Panasonic Electronic ComponentsIn Stock: 945ERJ-S14F31R6U Datasheet

Current PartRFQ

ERJ-14NF31R6U

Panasonic Electronic ComponentsIn Stock: 2693ERJ-14NF31R6U Datasheet

SimilarRFQ

CRCW121031R6FKEA

Vishay DaleIn Stock: 12096CRCW121031R6FKEA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ERJ-S14F31R6U are qualified based on the following electrical and mechanical parameters:

• Resistance value: 31.6 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.5W minimum
• Package format: 1210 (3225 Metric) (exact match required)
• Composition: Thick film
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C to 155°C minimum
• Automotive qualification: AEC-Q200
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity: MSL 1

All identified substitutes meet these core parameters and are therefore electrically and mechanically interchangeable in applications designed for the ERJ-S14F31R6U.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: ERJ-S14F31R6U remains the recommended choice for new designs. This part carries active product status from Panasonic Electronic Components with anti-sulfur coating and maintains full AEC-Q200 automotive qualification.

Secondary Selection: CRCW121031R6FKEA (Vishay Dale) is a qualified substitute with active product status. This part meets all electrical specifications and automotive requirements. The seated height is 0.024" (0.60mm) compared to 0.028" (0.70mm) for the primary part, which may be advantageous in space-constrained applications. Inventory availability is higher at 12,002 units.

Tertiary Selection: ERJ-14NF31R6U (Panasonic) is electrically and mechanically equivalent but carries "Not For New Designs" status. This part should be used only when existing inventory must be consumed or when design revisions are not feasible.

Frequently Asked Questions (FAQ)

Q: Can ERJ-14NF31R6U be used as a direct replacement for ERJ-S14F31R6U?

A: Yes, from an electrical and mechanical standpoint, ERJ-14NF31R6U is a direct substitute. However, ERJ-14NF31R6U is designated "Not For New Designs," making it unsuitable for new product development. Use only in legacy designs or when inventory constraints require it.

Q: What is the difference between the Panasonic ERJ-S14F31R6U and Vishay Dale CRCW121031R6FKEA?

A: Both parts are electrically identical with matching resistance, tolerance, power rating, and temperature specifications. The primary difference is the seated height: CRCW121031R6FKEA measures 0.024" (0.60mm) versus 0.028" (0.70mm) for ERJ-S14F31R6U. Both maintain AEC-Q200 automotive qualification and ROHS3 compliance.

Q: Are all substitute parts suitable for automotive applications?

A: Yes. All listed substitutes carry AEC-Q200 automotive qualification and are suitable for automotive circuit designs requiring this certification level.

Q: What is the significance of the anti-sulfur coating on the ERJ-S14F31R6U?

A: The anti-sulfur feature on ERJ-S14F31R6U provides enhanced reliability in environments with sulfur-containing contaminants. The ERJ-14NF31R6U and CRCW121031R6FKEA do not specify this feature, though both maintain AEC-Q200 qualification.

Q: Can these parts be used interchangeably in PCB layouts?

A: Yes. All parts use the 1210 (3225 Metric) package with identical footprints and two terminations. The minor height difference in CRCW121031R6FKEA (0.60mm vs. 0.70mm) does not affect PCB layout compatibility.

Q: What is MSL 1 rating and why does it matter?

A: MSL 1 (Moisture Sensitivity Level 1) indicates unlimited shelf life without moisture control requirements. All listed parts carry this rating, eliminating moisture-related handling constraints during storage and assembly.