ERJ-S1TF6340U Equivalent & Substitute Parts

Part Overview

The ERJ-S1TF6340U is a 634 Ohms ±1% 1W chip resistor in 2512 (6432 Metric) package manufactured by Panasonic Electronic Components. This thick film resistor 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 664 pieces available in stock.

Substitute parts become necessary when the primary part reaches end-of-life status, inventory constraints occur, or design revisions require alternative qualified sources. The ERJ-1TNF6340U represents a direct functional equivalent from Panasonic's legacy series, though it carries a "Not For New Designs" status and should be evaluated for existing production requirements only.

Substiute Parts

ERJ-S1TF6340U

Panasonic Electronic ComponentsIn Stock: 753ERJ-S1TF6340U Datasheet

Current PartRFQ

ERJ-1TNF6340U

Panasonic Electronic ComponentsIn Stock: 18822ERJ-1TNF6340U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ERJ-S1TF6340U is determined by strict equivalence across the following critical parameters:

Resistance value and tolerance must match exactly at 634 Ohms ±1%. Power rating must be 1W or greater. Package must be 2512 (6432 Metric) to ensure mechanical and thermal compatibility on printed circuit boards. Temperature coefficient must be ±100ppm/°C or better to maintain circuit performance across the operating temperature range of -55°C to 155°C. Automotive AEC-Q200 qualification is mandatory for applications requiring automotive-grade reliability. RoHS3 compliance and MSL 1 rating must be maintained for supply chain and manufacturing process compatibility.

The ERJ-1TNF6340U meets all electrical and mechanical parameters but differs in product lifecycle status and anti-sulfur feature availability. This part is suitable only for sustaining production of existing designs where qualification history exists.

Parameter Comparison

Engineering Selection Recommendations

For new design implementations, the ERJ-S1TF6340U is the preferred selection. This part carries active product status and includes anti-sulfur coating, providing enhanced reliability in corrosive environments. The part meets all automotive AEC-Q200 requirements and maintains full RoHS3 compliance.

The ERJ-1TNF6340U is electrically and mechanically equivalent and suitable only for sustaining production of existing designs where prior qualification and reliability history exist. The "Not For New Designs" status reflects Panasonic's product lifecycle management and does not indicate functional deficiency. The absence of anti-sulfur coating may be acceptable depending on application environment and existing design validation.

Selection between these parts should be based on design phase (new versus existing production) and environmental exposure requirements. Both parts satisfy the core electrical specifications and automotive qualification requirements.

Frequently Asked Questions (FAQ)

Q: Can ERJ-1TNF6340U be used as a direct replacement for ERJ-S1TF6340U in new designs?

A: No. The ERJ-1TNF6340U carries "Not For New Designs" status. New designs must use ERJ-S1TF6340U. The ERJ-1TNF6340U is restricted to sustaining production of existing qualified designs only.

Q: What is the significance of the anti-sulfur feature in ERJ-S1TF6340U?

A: The anti-sulfur coating provides enhanced corrosion resistance in environments with hydrogen sulfide exposure or high-sulfur industrial atmospheres. This feature is included in ERJ-S1TF6340U but not in ERJ-1TNF6340U. Selection depends on application environment requirements.

Q: Are both parts mechanically interchangeable on the same PCB?

A: Yes. Both parts use identical 2512 (6432 Metric) package dimensions: 0.252" L x 0.126" W (6.40mm x 3.20mm) with 0.028" (0.70mm) maximum seated height. PCB footprints and assembly processes are identical.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both ERJ-S1TF6340U and ERJ-1TNF6340U carry AEC-Q200 automotive qualification and are suitable for automotive applications requiring this certification level.

Q: What is the difference in inventory availability?

A: ERJ-S1TF6340U has 664 pieces in stock. ERJ-1TNF6340U has 18,788 pieces in stock. Higher inventory of the substitute part reflects its legacy status and potential use in sustaining production scenarios.

Q: Are there any compliance differences between the two parts?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating. Compliance profiles are identical.