ERJ-S1TF90R9U Equivalent & Substitute Parts

Part Overview

The ERJ-S1TF90R9U is a 90.9 Ohm ±1% 1W thick film chip resistor manufactured by Panasonic Electronic Components in the 2512 (6432 Metric) package. This component is rated for automotive applications under AEC-Q200 and features anti-sulfur construction. The part is currently active in production with 1154 pieces available in stock. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and automotive certifications align with the original component, enabling direct replacement in circuit designs without performance degradation.

Substiute Parts

ERJ-S1TF90R9U

Panasonic Electronic ComponentsIn Stock: 1215ERJ-S1TF90R9U Datasheet

Current PartRFQ

CRCW251290R9FKEG

Vishay DaleIn Stock: 94903CRCW251290R9FKEG Datasheet

SimilarRFQ

RMCF2512FT90R9

Stackpole Electronics IncIn Stock: 179013RMCF2512FT90R9 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ERJ-S1TF90R9U are qualified based on the following criteria:

• Identical resistance value: 90.9 Ohms
• Matching tolerance: ±1%
• Equivalent power rating: 1W
• Same package footprint: 2512 (6432 Metric)
• Identical composition: Thick Film
• Matching temperature coefficient: ±100ppm/°C
• Overlapping operating temperature range: -55°C ~ 155°C
• Automotive qualification: AEC-Q200 certification
• Equivalent RoHS compliance: ROHS3 Compliant
• Same moisture sensitivity level: MSL 1

The identified substitutes—CRCW251290R9FKEG (Vishay Dale) and RMCF2512FT90R9 (Stackpole Electronics Inc)—meet all these criteria and are direct functional equivalents suitable for circuit board replacement without design modification.

Parameter Comparison

Engineering Selection Recommendations

All three components—ERJ-S1TF90R9U, CRCW251290R9FKEG, and RMCF2512FT90R9—are active production parts with full AEC-Q200 automotive qualification and ROHS3 compliance. Selection among these equivalents may be based on availability, supply chain considerations, or procurement preferences, as electrical and mechanical specifications are identical. The ERJ-S1TF90R9U includes anti-sulfur construction as an additional feature; however, this does not preclude the use of substitute parts in standard automotive applications. All parts are suitable for direct board-level replacement without circuit redesign.

Frequently Asked Questions (FAQ)

Q: Can CRCW251290R9FKEG or RMCF2512FT90R9 be used as direct replacements for ERJ-S1TF90R9U?

A: Yes. Both substitute parts meet identical electrical specifications (90.9 Ohms ±1%, 1W), operate across the same temperature range (-55°C ~ 155°C), share the same 2512 package footprint, and carry AEC-Q200 automotive certification. Direct board-level substitution is supported.

Q: Are there dimensional differences between these parts?

A: Minor dimensional variations exist within acceptable tolerances. The ERJ-S1TF90R9U measures 0.252" L × 0.126" W (6.40mm × 3.20mm), while CRCW251290R9FKEG measures 0.248" L × 0.124" W (6.30mm × 3.15mm), and RMCF2512FT90R9 measures 0.248" L × 0.126" W (6.30mm × 3.20mm). All three have identical seated height of 0.028" (0.70mm). These variations remain within 2512 package specifications and do not affect PCB assembly or electrical performance.

Q: What is the significance of the anti-sulfur feature on the ERJ-S1TF90R9U?

A: Anti-sulfur construction provides enhanced resistance to sulfur-containing environmental contaminants, extending component reliability in harsh automotive environments. This feature is specific to the Panasonic part; however, all three components meet AEC-Q200 standards for automotive use.

Q: Are all three parts RoHS compliant?

A: Yes. ERJ-S1TF90R9U, CRCW251290R9FKEG, and RMCF2512FT90R9 are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, suitable for unrestricted storage and handling.

Q: Which substitute offers the highest inventory availability?

A: RMCF2512FT90R9 (Stackpole Electronics Inc) has 178,968 pieces in stock, followed by CRCW251290R9FKEG (Vishay Dale) with 94,834 pieces, and ERJ-S1TF90R9U (Panasonic) with 1,154 pieces.