Equivalent & Substitute Parts for ERJ-S1TJ684U

Part Overview

The ERJ-S1TJ684U is a 680 kOhms ±5% 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 1058 units in stock.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when design requirements mandate alternative suppliers for supply chain resilience, or when specific certifications or performance characteristics from alternative manufacturers better suit application requirements.

Substiute Parts

ERJ-S1TJ684U

Panasonic Electronic ComponentsIn Stock: 1114ERJ-S1TJ684U Datasheet

Current PartRFQ

ERJ-1TYJ684U

Panasonic Electronic ComponentsIn Stock: 6323ERJ-1TYJ684U Datasheet

SimilarRFQ

3520680KJT

TE Connectivity Passive ProductIn Stock: 60423520680KJT Datasheet

DirectRFQ

CRCW2512680KJNEG

Vishay DaleIn Stock: 2922CRCW2512680KJNEG Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ERJ-S1TJ684U is determined by the following critical parameters:

• Electrical Parameters: Resistance value (680 kOhms), tolerance (±5%), power rating (1W), and temperature coefficient (±200ppm/°C) must match exactly
• Package Compatibility: 2512 (6432 Metric) package footprint and form factor are mandatory for PCB assembly compatibility
• Composition: Thick film construction ensures consistent performance characteristics
• Environmental Ratings: Operating temperature range, RoHS compliance, and moisture sensitivity level must meet or exceed the original specification
• Certifications: AEC-Q200 automotive qualification is required for applications demanding automotive-grade reliability

The substitute parts listed below meet all these criteria and are electrically and mechanically interchangeable with the ERJ-S1TJ684U.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: ERJ-S1TJ684U remains the preferred choice for new designs due to its active production status, anti-sulfur coating feature, and full AEC-Q200 automotive qualification across the complete -55°C to 155°C temperature range.

Direct Substitute: CRCW2512680KJNEG (Vishay Dale) is the recommended alternative when ERJ-S1TJ684U availability is constrained. This part maintains identical electrical specifications, AEC-Q200 certification, and the full operating temperature range. Dimensional variation (0.248" L x 0.124" W versus 0.252" L x 0.126" W) is within standard PCB design tolerances for 2512 package footprints.

Secondary Substitute: 3520680KJT (TE Connectivity) is suitable for non-automotive applications or designs where the reduced upper operating temperature limit of 125°C is acceptable. This part lacks AEC-Q200 certification and should not be used in automotive-grade applications requiring full -55°C to 155°C performance.

Legacy Alternative: ERJ-1TYJ684U (Panasonic) is electrically and mechanically equivalent but carries "Not For New Designs" status. This part should be used only for legacy system maintenance or when existing inventory must be consumed.

Frequently Asked Questions (FAQ)

Q: Can CRCW2512680KJNEG be used as a direct replacement for ERJ-S1TJ684U in automotive applications?

A: Yes. Both parts meet AEC-Q200 automotive qualification, maintain ±5% tolerance, 1W power rating, and operate across -55°C to 155°C. Minor dimensional differences (0.248" × 0.124" versus 0.252" × 0.126") are within standard 2512 package tolerances and do not affect PCB assembly compatibility.

Q: Why is the operating temperature range different for 3520680KJT?

A: The TE Connectivity 3520680KJT is specified for -55°C to 125°C operation, which is narrower than the -55°C to 155°C range of the Panasonic and Vishay parts. This part is not suitable for applications requiring the full 155°C upper temperature limit or automotive AEC-Q200 certification.

Q: Is ERJ-1TYJ684U still available for new designs?

A: No. ERJ-1TYJ684U carries "Not For New Designs" status, indicating Panasonic has transitioned this part to legacy support only. New designs should specify ERJ-S1TJ684U or approved alternatives such as CRCW2512680KJNEG.

Q: What does the 2512 package designation mean?

A: 2512 is the imperial designation (0.252" × 0.126" nominal) for a surface-mount chip resistor package. The metric equivalent is 6432 (6.40mm × 3.20mm). All listed parts use this identical package footprint for PCB compatibility.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed parts—ERJ-S1TJ684U, ERJ-1TYJ684U, 3520680KJT, and CRCW2512680KJNEG—are ROHS3 compliant with Moisture Sensitivity Level 1 (unlimited shelf life).