RMCS1206FT422R Equivalent & Substitute Parts

Part Overview

The RMCS1206FT422R is a 422 Ohm ±1% 0.25W thick film chip resistor in 1206 (3216 Metric) package manufactured by Stackpole Electronics Inc. This anti-sulfur resistor is designed for general-purpose applications requiring precision resistance values with stable performance across the -55°C to 155°C operating temperature range. Finding equivalent and substitute parts is necessary when the primary part is unavailable, when alternative packaging formats are required, or when specific feature sets such as automotive qualification are needed for particular applications.

Substiute Parts

RMCS1206FT422R

Stackpole Electronics IncIn Stock: 976RMCS1206FT422R Datasheet

Current PartRFQ

CRCW1206422RFKEA

Vishay DaleIn Stock: 4736CRCW1206422RFKEA Datasheet

MFR RecommendedRFQ

ERJ-8ENF4220V

Panasonic Electronic ComponentsIn Stock: 23565ERJ-8ENF4220V Datasheet

MFR RecommendedRFQ

RC1206FR-07422RL

YAGEOIn Stock: 61984RC1206FR-07422RL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RMCS1206FT422R is determined by strict equivalence across the following critical parameters: resistance value (422 Ohms), tolerance (±1%), power rating (0.25W), package type (1206), composition (thick film), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C to 155°C). All substitute parts listed maintain these core electrical and mechanical specifications, ensuring functional interchangeability in circuit applications.

The substitute parts are grouped into three categories based on manufacturer and feature differentiation:

Vishay Dale CRCW1206422RFKEA — Automotive AEC-Q200 qualified variant with enhanced reliability ratings for automotive applications.

Panasonic ERJ-8ENF4220V — Automotive AEC-Q200 qualified variant; product status is Not For New Designs, suitable for legacy system support and replacement applications.

YAGEO RC1206FR-07422RL — Moisture-resistant variant with active product status, optimized for general-purpose and moisture-prone environments.

Parameter Comparison

Engineering Selection Recommendations

For active production and new designs: Select CRCW1206422RFKEA (Vishay Dale) or RC1206FR-07422RL (YAGEO). Both parts maintain Active product status and full ROHS3 compliance. CRCW1206422RFKEA is recommended for automotive applications requiring AEC-Q200 qualification. RC1206FR-07422RL is recommended for general-purpose applications with moisture-resistant requirements.

For legacy system support and replacement: ERJ-8ENF4220V (Panasonic) is available with high inventory levels despite Not For New Designs status, making it suitable for field replacements and maintenance of existing systems.

For anti-sulfur applications: RMCS1206FT422R (Stackpole) remains the primary choice due to its anti-sulfur feature. If substitution is required, verify that the application does not depend on anti-sulfur properties, as substitute parts feature alternative protective characteristics.

Frequently Asked Questions (FAQ)

Q: Can CRCW1206422RFKEA replace RMCS1206FT422R in all applications?

A: Yes, for applications not requiring anti-sulfur protection. Both parts share identical electrical specifications (422 Ohms ±1%, 0.25W, ±100ppm/°C) and package type (1206). CRCW1206422RFKEA adds automotive AEC-Q200 qualification, making it suitable for automotive environments.

Q: What is the difference between the Stackpole anti-sulfur feature and the Vishay automotive qualification?

A: Anti-sulfur protection prevents corrosion from sulfur-containing environments. Automotive AEC-Q200 qualification ensures reliability under automotive operating conditions including temperature cycling and vibration. These are distinct protective features addressing different environmental requirements.

Q: Is RC1206FR-07422RL suitable for automotive applications?

A: RC1206FR-07422RL is not automotive AEC-Q200 qualified. For automotive applications, use CRCW1206422RFKEA or ERJ-8ENF4220V.

Q: Why is ERJ-8ENF4220V marked as Not For New Designs?

A: This designation indicates the part is in mature or end-of-life status. It remains available for replacement and legacy system support but should not be selected for new product development. Use CRCW1206422RFKEA or RC1206FR-07422RL for new designs.

Q: Are all substitute parts available in Tape & Reel packaging?

A: RMCS1206FT422R and ERJ-8ENF4220V are supplied in Tape & Reel (TR) packaging. CRCW1206422RFKEA is supplied in Cut Tape (CT) & Digi-Reel® packaging. Verify packaging compatibility with your assembly process requirements.

Q: Do all parts meet ROHS3 compliance?

A: Yes, all listed parts are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), ensuring compatibility with standard PCB assembly and storage conditions.