ERJ-S1TF26R7U Equivalent & Substitute Parts

Part Overview

The ERJ-S1TF26R7U is a 26.7 Ohm ±1% 1W thick film chip resistor in 2512 (6432 Metric) package manufactured by Panasonic Electronic Components. This part 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 690 pieces available in stock.

Substitute parts become necessary when the primary part experiences supply constraints, extended lead times, or when design flexibility permits component standardization across manufacturing batches. Equivalent alternatives maintain identical electrical specifications and package dimensions while potentially offering different manufacturing series or supplier options.

Substiute Parts

ERJ-S1TF26R7U

Panasonic Electronic ComponentsIn Stock: 703ERJ-S1TF26R7U Datasheet

Current PartRFQ

ERJ-1TNF26R7U

Panasonic Electronic ComponentsIn Stock: 3131ERJ-1TNF26R7U Datasheet

SimilarRFQ

RMCF2512FT26R7

Stackpole Electronics IncIn Stock: 841RMCF2512FT26R7 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ERJ-S1TF26R7U is determined by strict equivalence across the following critical parameters:

• Electrical Specifications: Resistance value (26.7 Ohms), tolerance (±1%), and power rating (1W) must be identical
• Package Compatibility: 2512 (6432 Metric) package ensures mechanical and thermal compatibility with existing PCB layouts
• Composition & Performance: Thick film construction with ±100ppm/°C temperature coefficient and -55°C ~ 155°C operating range
• Automotive Compliance: AEC-Q200 qualification required for automotive-grade applications
• Environmental Standards: ROHS3 compliance and MSL 1 rating for moisture sensitivity

The two qualified substitutes—ERJ-1TNF26R7U (Panasonic) and RMCF2512FT26R7 (Stackpole Electronics)—meet all these criteria. Both parts maintain identical electrical performance and package specifications, differing only in manufacturing series and product lifecycle status.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: ERJ-S1TF26R7U

The ERJ-S1TF26R7U maintains active production status and includes anti-sulfur coating, making it the preferred choice for new designs and long-term supply continuity. This part is recommended for applications requiring extended product lifecycle support.

Secondary Selection: RMCF2512FT26R7

The RMCF2512FT26R7 from Stackpole Electronics is an active-status alternative offering equivalent electrical and thermal performance. This part is suitable for applications where multi-source component strategies are implemented. The dimensional variance (6.30mm vs 6.40mm length) remains within standard PCB layout tolerances for 2512 packages.

Legacy Alternative: ERJ-1TNF26R7U

The ERJ-1TNF26R7U carries "Not For New Designs" status and should be used only in existing production lines or legacy system maintenance where supply of the primary part is unavailable. This part maintains full electrical and compliance equivalence but lacks active manufacturing support.

Frequently Asked Questions (FAQ)

Q: Can ERJ-1TNF26R7U be used as a direct replacement for ERJ-S1TF26R7U in new designs?

A: No. The ERJ-1TNF26R7U is designated "Not For New Designs" by the manufacturer. While electrically and mechanically equivalent, new designs should specify either ERJ-S1TF26R7U or RMCF2512FT26R7 to ensure long-term supply availability and manufacturing support.

Q: What is the significance of the anti-sulfur coating on the ERJ-S1TF26R7U?

A: The anti-sulfur feature on the ERJ-S1TF26R7U provides enhanced corrosion resistance in environments with sulfur-containing contaminants. The ERJ-1TNF26R7U lacks this specification. For applications in corrosive environments, the ERJ-S1TF26R7U is the preferred choice.

Q: Are the dimensional differences between ERJ-S1TF26R7U (6.40mm) and RMCF2512FT26R7 (6.30mm) significant for PCB layout?

A: Both parts conform to the 2512 (6432 Metric) package standard. The 0.10mm length difference falls within standard PCB footprint tolerances and does not require layout modification. Both parts are mechanically interchangeable on standard 2512 footprints.

Q: Do all three parts meet automotive qualification requirements?

A: Yes. All three parts carry AEC-Q200 automotive qualification and are suitable for automotive-grade applications. They maintain identical operating temperature ranges (-55°C ~ 155°C) and thermal performance characteristics.

Q: What is the difference between the ERJ-S1T and ERJ-1TN series designations?

A: The series designation indicates different manufacturing generations within Panasonic's product line. ERJ-S1T represents the current active series with anti-sulfur coating. ERJ-1TN is a legacy series no longer recommended for new designs. Both maintain identical electrical specifications and package compatibility.