RMCS1206FT261R Equivalent & Substitute Parts

Part Overview

The RMCS1206FT261R is a 261 Ohm ±1% 0.25W thick film chip resistor in 1206 (3216 Metric) package manufactured by Stackpole Electronics Inc. This component is actively produced and widely used in general-purpose applications requiring precision resistive elements with anti-sulfur protection. Equivalent and substitute parts are necessary when the primary part experiences supply constraints, when design requirements mandate specific manufacturer certifications such as AEC-Q200 automotive qualification, or when alternative sourcing improves cost efficiency and inventory availability.

Substiute Parts

RMCS1206FT261R

Stackpole Electronics IncIn Stock: 918RMCS1206FT261R Datasheet

Current PartRFQ

AC1206FR-07261RL

YAGEOIn Stock: 796AC1206FR-07261RL Datasheet

MFR RecommendedRFQ

CRCW1206261RFKEA

Vishay DaleIn Stock: 13535CRCW1206261RFKEA Datasheet

MFR RecommendedRFQ

ERJ-8ENF2610V

Panasonic Electronic ComponentsIn Stock: 58654ERJ-8ENF2610V Datasheet

MFR RecommendedRFQ

RC1206FR-07261RL

YAGEOIn Stock: 112107RC1206FR-07261RL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RMCS1206FT261R is determined by strict equivalence across the following parameters: resistance value (261 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 identified substitute parts meet these core electrical and mechanical requirements. Substitute parts are grouped into two categories: general-purpose equivalents and automotive-qualified alternatives. General-purpose substitutes maintain functional equivalence without additional automotive certification. Automotive-qualified substitutes include AEC-Q200 rating, which extends application scope to automotive environments where this certification is mandated.

Parameter Comparison

Engineering Selection Recommendations

For new designs and active production, AC1206FR-07261RL (YAGEO) and CRCW1206261RFKEA (Vishay Dale) are the primary recommended substitutes. Both parts are actively produced, ROHS3 compliant, and carry AEC-Q200 automotive qualification, extending their application scope beyond general-purpose circuits. AC1206FR-07261RL provides additional moisture resistance, beneficial in high-humidity environments. CRCW1206261RFKEA offers the highest inventory availability (13,474 pieces) among all substitutes.

RC1206FR-07261RL (YAGEO) serves as a general-purpose equivalent without automotive certification. This part is actively produced with substantial inventory (112,050 pieces) and includes moisture-resistant features, making it suitable for non-automotive applications requiring enhanced environmental protection.

ERJ-8ENF2610V (Panasonic Electronic Components) is electrically and mechanically equivalent with AEC-Q200 qualification but carries a "Not For New Designs" status. This part should be used only for legacy system maintenance or replacement scenarios where design continuity is required.

Frequently Asked Questions (FAQ)

Q: Can I substitute RMCS1206FT261R with any of these parts in my existing design?

A: Yes, all listed substitute parts are electrically and mechanically equivalent. They share identical resistance (261 Ohms), tolerance (±1%), power rating (0.25W), package (1206), and operating temperature range (-55°C to 155°C). Physical dimensions vary slightly within acceptable tolerances for PCB assembly. Verify your design does not mandate specific manufacturer part numbers or anti-sulfur features exclusive to the RMCS series.

Q: What is the difference between automotive-qualified and general-purpose substitutes?

A: Automotive-qualified substitutes (AC1206FR-07261RL, CRCW1206261RFKEA, ERJ-8ENF2610V) carry AEC-Q200 certification, indicating compliance with automotive industry reliability and quality standards. General-purpose substitutes (RC1206FR-07261RL) lack this certification. Use automotive-qualified parts only when your application or customer requirements explicitly mandate AEC-Q200 compliance.

Q: Why is ERJ-8ENF2610V marked "Not For New Designs"?

A: This designation indicates the manufacturer has discontinued active development for new applications. While the part remains functionally equivalent and suitable for replacement or legacy system support, it should not be selected for new product designs. Prefer AC1206FR-07261RL or CRCW1206261RFKEA for new designs.

Q: Are there dimensional differences between these parts?

A: Minor dimensional variations exist within the 1206 package specification. Length ranges from 0.122" to 0.126" (3.10mm to 3.20mm), width from 0.061" to 0.063" (1.55mm to 1.60mm), and height from 0.024" to 0.028" (0.60mm to 0.70mm). These variations remain within standard 1206 package tolerances and do not affect PCB assembly compatibility.

Q: Which substitute offers the best inventory availability?

A: CRCW1206261RFKEA (Vishay Dale) provides the highest inventory with 13,474 pieces in stock, followed by RC1206FR-07261RL (YAGEO) with 112,050 pieces. For immediate availability in high-volume applications, RC1206FR-07261RL is the optimal choice.

Q: Can I use these substitutes interchangeably in production?

A: Yes, all parts meet identical electrical specifications and package requirements. However, document any substitution in your bill of materials and design records. If your application requires specific certifications (AEC-Q200, anti-sulfur protection, or moisture resistance), verify the selected substitute includes these features before production implementation.