ERJ-S1TF3740U Equivalent & Substitute Parts

Part Overview

The ERJ-S1TF3740U is a 374 Ohms ±1% 1W chip resistor manufactured by Panasonic Electronic Components in the 2512 (6432 Metric) package. This thick film resistor features anti-sulfur coating and automotive AEC-Q200 qualification, designed for high-reliability applications in harsh environments. The part is currently in active production status with 990 pieces available in stock.

Substitute parts become necessary when the primary part reaches end-of-life status, inventory constraints occur, or when design flexibility is required across multiple qualified alternatives that meet identical electrical and mechanical specifications.

Substiute Parts

ERJ-S1TF3740U

Panasonic Electronic ComponentsIn Stock: 1053ERJ-S1TF3740U Datasheet

Current PartRFQ

ERJ-1TNF3740U

Panasonic Electronic ComponentsIn Stock: 1893ERJ-1TNF3740U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ERJ-S1TF3740U is determined by strict equivalence across the following parameters:

• Resistance value: 374 Ohms
• Tolerance: ±1%
• Power rating: 1W
• Package: 2512 (6432 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-1TNF3740U meets all electrical and mechanical parameters required for direct substitution. This part is manufactured by the same supplier (Panasonic Electronic Components) and maintains identical specifications across all critical dimensions and performance characteristics. The primary distinction is product status: ERJ-1TNF3740U is designated "Not For New Designs," indicating it is suitable for replacement and maintenance applications but not recommended for new product development.

Parameter Comparison

Engineering Selection Recommendations

For new product designs, the ERJ-S1TF3740U is the preferred selection due to its active production status and ongoing manufacturer support. This part provides long-term availability and supply chain stability for production volumes.

The ERJ-1TNF3740U is suitable for replacement, repair, and maintenance applications where the "Not For New Designs" status does not restrict use. Both parts maintain identical electrical performance, mechanical compatibility, and automotive qualification levels. Selection between these parts should be based on design phase requirements and supply chain strategy rather than technical performance differences.

Both parts satisfy ROHS3 compliance and REACH unaffected status, ensuring regulatory compliance across automotive and industrial applications.

Frequently Asked Questions (FAQ)

Q: Can ERJ-1TNF3740U be used as a direct replacement for ERJ-S1TF3740U in existing assemblies?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters. The ERJ-1TNF3740U is suitable for replacement and maintenance applications.

Q: What does "Not For New Designs" mean for the ERJ-1TNF3740U?

A: This designation indicates the part is in mature or declining production phase. It remains fully functional and qualified but is not recommended for incorporation into new product designs. Existing designs using this part may continue to source it for production and field service.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both parts are packaged in the 2512 (6432 Metric) case with identical length (0.252" / 6.40mm), width (0.126" / 3.20mm), and maximum seated height (0.028" / 0.70mm).

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both ERJ-S1TF3740U and ERJ-1TNF3740U carry AEC-Q200 automotive qualification and are suitable for automotive applications requiring high-reliability thick film resistors.

Q: What is the significance of the anti-sulfur feature on the ERJ-S1TF3740U?

A: The anti-sulfur coating provides enhanced protection against sulfur-containing environmental contaminants, extending reliability in harsh industrial and automotive environments. The ERJ-1TNF3740U does not specify this feature in its detailed description.

Q: Are there any differences in compliance or certifications?

A: Both parts are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity level (MSL 1). No compliance differences exist between the two parts.