ERJ-S1TF3742U Equivalent & Substitute Parts

Part Overview

The ERJ-S1TF3742U is a 37.4 kOhms ±1% 1W thick film chip resistor in 2512 (6432 Metric) package manufactured by Panasonic Electronic Components. This component is designed for automotive applications and carries AEC-Q200 qualification with anti-sulfur protection. The part is currently in active production status. Substitute parts may be required due to supply chain constraints, inventory availability, or design phase transitions where legacy series components are no longer recommended for new designs.

Substiute Parts

ERJ-S1TF3742U

Panasonic Electronic ComponentsIn Stock: 1151ERJ-S1TF3742U Datasheet

Current PartRFQ

ERJ-1TNF3742U

Panasonic Electronic ComponentsIn Stock: 4888ERJ-1TNF3742U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ERJ-S1TF3742U is determined by the following critical parameters:

• Resistance value: 37.4 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 1W (exact match required)
• Package: 2512 (6432 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Temperature coefficient: ±100ppm/°C (exact match required)
• Operating temperature range: -55°C ~ 155°C (exact match required)
• Automotive qualification: AEC-Q200 (required for automotive applications)
• RoHS compliance: ROHS3 Compliant (required for regulatory compliance)

The ERJ-1TNF3742U qualifies as a direct substitute based on matching all critical electrical and mechanical parameters. This part belongs to the ERJ-1TN series, which is designated as "Not For New Designs" but remains functionally equivalent for existing applications and replacement scenarios.

Parameter Comparison

Engineering Selection Recommendations

The ERJ-1TNF3742U is electrically and mechanically equivalent to the ERJ-S1TF3742U. Both parts meet AEC-Q200 automotive qualification and ROHS3 compliance requirements. The primary distinction is product lifecycle status: ERJ-S1TF3742U is designated for active use in new designs, while ERJ-1TNF3742U is marked "Not For New Designs."

For new design implementations, the ERJ-S1TF3742U is the preferred selection. The ERJ-1TNF3742U is suitable for replacement, repair, or continuation of existing designs where the legacy series component is already in production. Both parts are functionally interchangeable from an electrical and thermal performance perspective.

Frequently Asked Questions (FAQ)

Q: Can ERJ-1TNF3742U be used as a direct replacement for ERJ-S1TF3742U in automotive applications?

A: Yes. Both parts are AEC-Q200 qualified, carry identical electrical specifications (37.4 kOhms ±1%, 1W), and use the same 2512 package. They are functionally equivalent for automotive circuit applications.

Q: What is the significance of the "Not For New Designs" status on ERJ-1TNF3742U?

A: This designation indicates the part is in legacy status. It remains available and fully functional but is not recommended for incorporation into new product designs. It is appropriate for replacement stock, repair applications, or continuation of existing designs.

Q: Are there any differences in anti-sulfur protection between these parts?

A: The ERJ-S1TF3742U explicitly includes anti-sulfur protection in its feature set. The ERJ-1TNF3742U does not list this feature. This distinction may be relevant for applications in high-sulfur environments.

Q: Do both parts have identical temperature performance?

A: Yes. Both parts operate across -55°C ~ 155°C with a temperature coefficient of ±100ppm/°C, ensuring equivalent thermal stability and performance across the specified operating range.

Q: Are the packaging and tape specifications identical?

A: Yes. Both parts are supplied in Tape & Reel (TR) packaging with 2512 (6432 Metric) case dimensions: 0.252" L x 0.126" W (6.40mm x 3.20mm) with maximum seated height of 0.028" (0.70mm).