ERJ-S1TF1431U Equivalent & Substitute Parts

Part Overview

The ERJ-S1TF1431U is a 1.43 kOhms ±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 1048 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-S1TF1431U

Panasonic Electronic ComponentsIn Stock: 1119ERJ-S1TF1431U Datasheet

Current PartRFQ

ERJ-1TNF1431U

Panasonic Electronic ComponentsIn Stock: 4743ERJ-1TNF1431U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ERJ-S1TF1431U is determined by strict equivalence across the following parameters:

• Resistance value: 1.43 kOhms
• 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-1TNF1431U qualifies as a direct substitute based on complete alignment with all electrical and mechanical parameters. The primary distinction is product status: ERJ-1TNF1431U is designated "Not For New Designs," indicating it remains functionally equivalent but is in end-of-life phase.

Parameter Comparison

Engineering Selection Recommendations

For new designs and production programs, the ERJ-S1TF1431U is the preferred selection due to its active product status and manufacturer commitment to continued supply. This part maintains full automotive AEC-Q200 qualification and ROHS3 compliance.

The ERJ-1TNF1431U remains electrically and mechanically equivalent and may be used in existing designs or legacy applications where supply of the primary part is constrained. However, this part carries "Not For New Designs" status, indicating Panasonic has transitioned this model to end-of-life phase. Selection of ERJ-1TNF1431U should be limited to situations where design flexibility permits use of a functionally identical but obsolescence-tracked alternative.

Both parts are manufactured by Panasonic Electronic Components and share identical electrical specifications, package dimensions, and automotive qualifications. The choice between them is driven by product lifecycle status and supply availability rather than technical performance differences.

Frequently Asked Questions (FAQ)

Q: Can ERJ-1TNF1431U be used as a direct replacement for ERJ-S1TF1431U in existing assemblies?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters: 1.43 kOhms ±1%, 1W power rating, 2512 package, ±100ppm/°C temperature coefficient, -55°C to 155°C operating range, and AEC-Q200 automotive qualification. Physical footprint and solder pad layout are identical.

Q: Why is ERJ-1TNF1431U marked "Not For New Designs"?

A: This designation indicates the part has entered end-of-life phase. Panasonic has transitioned manufacturing focus to the ERJ-S1TF1431U series. Existing inventory remains available, but new design programs should specify the active ERJ-S1TF1431U to ensure long-term supply continuity.

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

A: The ERJ-S1TF1431U explicitly includes anti-sulfur coating in its feature set. The ERJ-1TNF1431U specification does not list this feature. For applications requiring sulfur resistance, verify coating requirements against your specific environmental conditions before substitution.

Q: Do both parts meet the same RoHS and REACH compliance requirements?

A: Yes. Both ERJ-S1TF1431U and ERJ-1TNF1431U are ROHS3 Compliant and REACH Unaffected, with identical MSL 1 (Unlimited) moisture sensitivity ratings.

Q: What is the difference in available inventory between these parts?

A: ERJ-S1TF1431U has 1048 units in stock, while ERJ-1TNF1431U has 4676 units available. The higher inventory of the end-of-life part reflects existing stock; however, replenishment of ERJ-1TNF1431U is not guaranteed due to its discontinued status.