RMCS1206FT402R Equivalent & Substitute Parts

Part Overview

The RMCS1206FT402R is a 402 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 and features anti-sulfur construction with RoHS3 compliance. Substitute parts are necessary when RMCS1206FT402R availability is limited, when design requirements mandate specific manufacturer certifications such as AEC-Q200 automotive qualification, or when alternative sourcing strategies are required to optimize supply chain resilience.

Substiute Parts

RMCS1206FT402R

Stackpole Electronics IncIn Stock: 923RMCS1206FT402R Datasheet

Current PartRFQ

AC1206FR-07402RL

YAGEOIn Stock: 6191AC1206FR-07402RL Datasheet

MFR RecommendedRFQ

CR1206-FX-4020ELF

Bourns Inc.In Stock: 27620CR1206-FX-4020ELF Datasheet

MFR RecommendedRFQ

CRCW1206402RFKEA

Vishay DaleIn Stock: 21600CRCW1206402RFKEA Datasheet

MFR RecommendedRFQ

ERJ-8ENF4020V

Panasonic Electronic ComponentsIn Stock: 122355ERJ-8ENF4020V Datasheet

MFR RecommendedRFQ

RC1206FR-07402RL

YAGEOIn Stock: 276333RC1206FR-07402RL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RMCS1206FT402R is determined by strict equivalence across the following parameters: resistance value (402 Ohms), tolerance (±1%), power rating (0.25W), package type (1206), composition (thick film), temperature coefficient (±100ppm/°C), operating temperature range (-55°C ~ 155°C), and compliance certifications (RoHS3, REACH Unaffected). All identified substitute parts meet these core electrical and mechanical requirements. Dimensional variations within the 1206 package footprint are acceptable provided they remain within standard PCB design tolerances. Substitute parts are grouped by manufacturer and may include additional features such as automotive AEC-Q200 qualification or moisture-resistant construction, which represent enhancements rather than deviations from the base specification.

Parameter Comparison

Engineering Selection Recommendations

For applications requiring Active product status with ongoing manufacturer support, AC1206FR-07402RL (YAGEO), CR1206-FX-4020ELF (Bourns), CRCW1206402RFKEA (Vishay Dale), and RC1206FR-07402RL (YAGEO) are all qualified substitutes. AC1206FR-07402RL and CRCW1206402RFKEA include automotive AEC-Q200 certification and are suitable for automotive and high-reliability applications. CR1206-FX-4020ELF and RC1206FR-07402RL provide moisture-resistant construction for general industrial applications. ERJ-8ENF4020V carries automotive AEC-Q200 qualification but is designated Not For New Designs; this part is suitable only for legacy system maintenance or replacement scenarios where design continuity is required. All substitute parts maintain RoHS3 compliance and unlimited moisture sensitivity level (MSL 1), ensuring compatibility with standard PCB assembly processes.

Frequently Asked Questions (FAQ)

Q: Can AC1206FR-07402RL be used as a direct replacement for RMCS1206FT402R? A: Yes. Both parts share identical electrical specifications (402 Ω ±1%, 0.25W, ±100ppm/°C, -55°C ~ 155°C) and 1206 package footprint. AC1206FR-07402RL includes automotive AEC-Q200 qualification and moisture-resistant features, making it suitable for applications requiring enhanced reliability.

Q: What is the difference between moisture-resistant and anti-sulfur construction? A: Both features address environmental protection. Anti-sulfur construction (RMCS1206FT402R) protects against sulfur-containing atmospheric corrosion. Moisture-resistant construction (AC1206FR-07402RL, CR1206-FX-4020ELF, RC1206FR-07402RL) provides protection against moisture ingress. Selection depends on the specific environmental exposure of the application.

Q: Why is ERJ-8ENF4020V marked as Not For New Designs? A: This designation indicates that Panasonic has discontinued active development and recommends alternative parts for new designs. ERJ-8ENF4020V remains available for legacy system support and replacement applications only.

Q: Are there dimensional differences between substitute parts? A: Minor dimensional variations exist within the 1206 package specification. RMCS1206FT402R measures 0.122" L × 0.061" W (3.10mm × 1.55mm) with 0.026" max height. Substitute parts range from 0.122" to 0.126" length and 0.063" width with heights from 0.024" to 0.030". These variations remain within standard 1206 PCB footprint tolerances and do not affect interchangeability.

Q: Which substitute part has the highest inventory availability? A: RC1206FR-07402RL (YAGEO) has 276,264 pieces in stock, followed by ERJ-8ENF4020V (Panasonic) with 122,325 pieces. Both represent strong supply availability for high-volume applications.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All listed substitute parts carry RoHS3 compliance certification and REACH Unaffected status, meeting current environmental and regulatory requirements for global distribution.