ERJ-S1TF8452U Equivalent & Substitute Parts

Part Overview

The ERJ-S1TF8452U is an 84.5 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 647 units 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-1TNF8452U represents a functionally equivalent alternative from the same manufacturer, though it carries a "Not For New Designs" status and lacks the anti-sulfur feature of the primary part.

Substiute Parts

ERJ-S1TF8452U

Panasonic Electronic ComponentsIn Stock: 687ERJ-S1TF8452U Datasheet

Current PartRFQ

ERJ-1TNF8452U

Panasonic Electronic ComponentsIn Stock: 5047ERJ-1TNF8452U Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ERJ-S1TF8452U is determined by strict equivalence across the following critical parameters:

• Resistance value: 84.5 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-1TNF8452U meets all electrical and mechanical parameters required for direct substitution. However, it does not include the anti-sulfur feature present in the primary part. This distinction is material for applications requiring enhanced corrosion resistance in high-sulfur environments.

Parameter Comparison

Engineering Selection Recommendations

The ERJ-S1TF8452U is the preferred choice for new designs due to its active production status and anti-sulfur coating feature. This coating provides enhanced protection in corrosive environments, particularly where hydrogen sulfide or other sulfur-containing compounds are present.

The ERJ-1TNF8452U serves as a functional equivalent for existing designs or legacy applications where anti-sulfur protection is not a design requirement. Its "Not For New Designs" status indicates it remains available for support of existing products but should not be selected for new development. Both parts maintain identical electrical performance, mechanical compatibility, and automotive qualification levels.

Selection between these parts depends on application environment and design phase. For new automotive designs requiring corrosion resistance in harsh environments, the ERJ-S1TF8452U is the appropriate choice. For retrofit or legacy support applications, the ERJ-1TNF8452U provides electrical equivalence with the understanding that anti-sulfur protection is not included.

Frequently Asked Questions (FAQ)

Q: Can ERJ-1TNF8452U be used as a direct replacement for ERJ-S1TF8452U in automotive applications?

A: The ERJ-1TNF8452U is electrically and mechanically equivalent and maintains AEC-Q200 automotive qualification. However, it lacks the anti-sulfur coating. Substitution is permissible only if the application environment does not require sulfur corrosion resistance.

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

A: Anti-sulfur coating protects the resistor element from degradation caused by hydrogen sulfide and other sulfur compounds in the environment. This feature is critical in industrial, marine, and certain automotive applications where such exposure occurs.

Q: Are both parts compatible with the same PCB footprint?

A: Yes. Both parts use the 2512 (6432 Metric) package with identical dimensions: 0.252" L x 0.126" W (6.40mm x 3.20mm) and maximum seated height of 0.028" (0.70mm). PCB layout and assembly processes require no modification.

Q: Why is ERJ-1TNF8452U marked "Not For New Designs"?

A: This status indicates the part is in mature or declining production phase. Panasonic continues to supply existing inventory for legacy product support, but recommends the ERJ-S1TF8452U for new development to ensure long-term availability and access to current manufacturing improvements.

Q: Do both parts meet the same compliance standards?

A: Yes. Both parts are ROHS3 compliant, REACH unaffected, and carry AEC-Q200 automotive qualification. Moisture sensitivity level is MSL 1 (unlimited) for both, indicating no special storage or handling requirements.

Q: Can these parts be used interchangeably in high-temperature applications?

A: Yes. Both parts operate across the identical temperature range of -55°C to 155°C with ±100ppm/°C temperature coefficient. Thermal performance is equivalent.