RMCS1206FT42R2 Equivalent & Substitute Parts

Part Overview

The RMCS1206FT42R2 is a 42.2 Ohm ±1% 0.25W thick film chip resistor in 1206 (3216 Metric) package manufactured by Stackpole Electronics Inc. This component is classified as Active product status. Substitute parts are necessary when the primary part experiences supply constraints, extended lead times, or when design requirements mandate specific certifications such as automotive qualification or enhanced environmental protection features.

Substiute Parts

RMCS1206FT42R2

Stackpole Electronics IncIn Stock: 989RMCS1206FT42R2 Datasheet

Current PartRFQ

CRCW120642R2FKEA

Vishay DaleIn Stock: 84564CRCW120642R2FKEA Datasheet

MFR RecommendedRFQ

ERJ-8ENF42R2V

Panasonic Electronic ComponentsIn Stock: 25021ERJ-8ENF42R2V Datasheet

MFR RecommendedRFQ

RC1206FR-0742R2L

YAGEOIn Stock: 10728RC1206FR-0742R2L Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters: resistance value (42.2 Ohms), tolerance (±1%), power rating (0.25W), package type (1206), composition (thick film), temperature coefficient (±100ppm/°C), operating temperature range (-55°C to 155°C), and compliance certifications (ROHS3, REACH Unaffected). All listed substitute parts meet these core electrical and mechanical requirements. Variations in physical dimensions (length, width, height) and additional features (automotive qualification, moisture resistance) do not disqualify substitution but indicate application-specific enhancements.

Parameter Comparison

Engineering Selection Recommendations

CRCW120642R2FKEA (Vishay Dale) is the primary recommended substitute. This part maintains Active product status and carries automotive AEC-Q200 qualification, providing enhanced reliability assurance for applications requiring automotive-grade components. Inventory availability is substantial at 84,519 pieces.

RC1206FR-0742R2L (YAGEO) is a secondary substitute option. This part maintains Active product status and incorporates moisture-resistant construction. Inventory availability is 10,648 pieces.

ERJ-8ENF42R2V (Panasonic Electronic Components) is not recommended for new designs due to its "Not For New Designs" product status, despite meeting all electrical and mechanical parameters. This designation indicates the manufacturer has discontinued active support for this part line. Use only when existing inventory constraints or legacy system requirements mandate this specific part.

Frequently Asked Questions (FAQ)

Q: Can CRCW120642R2FKEA replace RMCS1206FT42R2 in all applications? A: Yes. Both parts share identical electrical specifications (42.2 Ohms ±1%, 0.25W, ±100ppm/°C, -55°C to 155°C operating range) and package type (1206). The CRCW part includes automotive AEC-Q200 qualification, which does not restrict use in non-automotive applications.

Q: What is the difference between Anti-Sulfur and Moisture Resistant features? A: Anti-Sulfur protection (RMCS1206FT42R2) addresses corrosion from sulfur-containing environments. Moisture Resistant construction (RC1206FR-0742R2L) addresses humidity and condensation exposure. These are distinct environmental protections; selection depends on application environment.

Q: Why is ERJ-8ENF42R2V marked "Not For New Designs"? A: This designation indicates Panasonic has transitioned this product line to end-of-life status. While existing inventory may be available, the manufacturer no longer actively supports new design implementations. New designs should use CRCW120642R2FKEA or RC1206FR-0742R2L.

Q: Are there physical dimension differences between these parts? A: Minor variations exist. RMCS1206FT42R2 and RC1206FR-0742R2L measure 0.122" L × 0.061" W with 0.026" max height. CRCW120642R2FKEA and ERJ-8ENF42R2V measure 0.126" L × 0.063" W with 0.024" and 0.028" max heights respectively. These differences are within standard PCB layout tolerances for 1206 package footprints.

Q: Do all substitute parts comply with RoHS and REACH regulations? A: Yes. All listed parts are ROHS3 Compliant and REACH Unaffected, meeting current environmental compliance requirements.