RMCS1206FT402K Equivalent & Substitute Parts

Part Overview

The RMCS1206FT402K is a 402 kOhms ±1% 0.25W chip resistor in 1206 (3216 Metric) package manufactured by Stackpole Electronics Inc. This thick film resistor features anti-sulfur construction and is designed for general-purpose applications requiring precision resistance values with tight tolerance specifications. The part is currently in active production status with 1060 units available in stock.

Equivalent and substitute parts are necessary when the primary part experiences supply constraints, extended lead times, or when design requirements necessitate alternative sourcing options while maintaining electrical and mechanical compatibility.

Substiute Parts

RMCS1206FT402K

Stackpole Electronics IncIn Stock: 1142RMCS1206FT402K Datasheet

Current PartRFQ

CRCW1206402KFKEA

Vishay DaleIn Stock: 26230CRCW1206402KFKEA Datasheet

MFR RecommendedRFQ

ERJ-8ENF4023V

Panasonic Electronic ComponentsIn Stock: 3516ERJ-8ENF4023V Datasheet

MFR RecommendedRFQ

RC1206FR-07402KL

YAGEOIn Stock: 9521RC1206FR-07402KL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the RMCS1206FT402K is determined by the following mandatory parameters:

• Resistance value: 402 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.25W / 1/4W (exact match required)
• Package: 1206 (3216 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Temperature coefficient: ±100ppm/°C (exact match required)
• Operating temperature range: -55°C ~ 155°C (exact match required)
• RoHS compliance: ROHS3 Compliant (exact match required)

All substitute parts listed meet these criteria and are electrically and mechanically interchangeable with the primary part. Dimensional variations within supplier tolerances do not affect circuit performance or PCB assembly compatibility.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: CRCW1206402KFKEA (Vishay Dale) is the recommended substitute for new designs. This part maintains active production status and includes AEC-Q200 automotive qualification, providing enhanced reliability documentation. Inventory availability is substantial at 26,215 units.

Secondary Selection: RC1206FR-07402KL (YAGEO) is suitable for applications where moisture resistance is a design requirement. This part is in active production with 9,418 units in stock and provides moisture-resistant thick film construction.

Legacy Applications: ERJ-8ENF4023V (Panasonic) is marked as "Not For New Designs" and should be used only for replacement or repair of existing assemblies. This part is retained in the substitute list due to historical equivalence but is not recommended for new product development.

Frequently Asked Questions (FAQ)

Q: Can CRCW1206402KFKEA be used as a direct replacement for RMCS1206FT402K?

A: Yes. Both parts share identical electrical specifications (402 kOhms ±1%, 0.25W, ±100ppm/°C, -55°C ~ 155°C operating range) and package configuration (1206 / 3216 Metric). Dimensional variations (length 3.10mm vs 3.20mm, height 0.65mm vs 0.60mm) are within standard PCB assembly tolerances and do not affect circuit performance or board layout compatibility.

Q: What is the difference between the anti-sulfur feature of RMCS1206FT402K and the automotive AEC-Q200 qualification of CRCW1206402KFKEA?

A: Anti-sulfur construction protects against sulfur-containing environmental contaminants. AEC-Q200 qualification indicates automotive-grade reliability testing and performance validation. Both features address different application environments. Selection depends on end-use requirements rather than electrical equivalence.

Q: Why is ERJ-8ENF4023V marked as "Not For New Designs"?

A: This designation indicates the manufacturer has discontinued active development and recommends alternative parts for new product designs. The part remains functionally equivalent and suitable for legacy system repairs or replacement applications where existing inventory exists.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed parts, including the primary RMCS1206FT402K and all substitutes, are ROHS3 Compliant with MSL rating of 1 (Unlimited), ensuring compatibility with modern manufacturing and environmental regulations.

Q: Can these parts be used interchangeably in high-precision analog circuits?

A: Yes, within the specified tolerance of ±1%. All parts share identical tolerance specifications and temperature coefficients (±100ppm/°C). Circuit performance depends on the tolerance and temperature stability requirements of the specific application, which are equivalent across all listed parts.