RMCS1206FT24K9 Equivalent & Substitute Parts

Part Overview

The RMCS1206FT24K9 is a 24.9 kOhms ±1% 0.25W thick film chip resistor in 1206 (3216 Metric) package manufactured by Stackpole Electronics Inc. This anti-sulfur resistor operates across -55°C to 155°C and is ROHS3 compliant with unlimited moisture sensitivity rating. Substitute parts are necessary when the primary part is unavailable, when design requirements demand automotive qualification (AEC-Q200), or when enhanced performance features such as pulse withstanding capability are required.

Substiute Parts

RMCS1206FT24K9

Stackpole Electronics IncIn Stock: 955RMCS1206FT24K9 Datasheet

Current PartRFQ

RMCF1206FT24K9

Stackpole Electronics IncIn Stock: 69880RMCF1206FT24K9 Datasheet

MFR RecommendedRFQ

AC1206FR-0724K9L

YAGEOIn Stock: 8068AC1206FR-0724K9L Datasheet

MFR RecommendedRFQ

CR1206-FX-2492ELF

Bourns Inc.In Stock: 17669CR1206-FX-2492ELF Datasheet

MFR RecommendedRFQ

CRCW120624K9FKEA

Vishay DaleIn Stock: 11321CRCW120624K9FKEA Datasheet

MFR RecommendedRFQ

CRCW120624K9FKEAHP

Vishay DaleIn Stock: 2714CRCW120624K9FKEAHP Datasheet

MFR RecommendedRFQ

CRCW120624K9FKTA

Vishay DaleIn Stock: 6021CRCW120624K9FKTA Datasheet

MFR RecommendedRFQ

ERJ-8ENF2492V

Panasonic Electronic ComponentsIn Stock: 51853ERJ-8ENF2492V Datasheet

MFR RecommendedRFQ

RC1206FR-0724K9L

YAGEOIn Stock: 59040RC1206FR-0724K9L Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following parameters:

• Resistance Value: Must be 24.9 kOhms
• Tolerance: Must be ±1%
• Package / Case: Must be 1206 (3216 Metric)
• Composition: Must be Thick Film
• Temperature Coefficient: Must be ±100ppm/°C
• Operating Temperature Range: Must be -55°C ~ 155°C
• Number of Terminations: Must be 2
• Moisture Sensitivity Level: Must be 1 (Unlimited)

All substitute parts listed meet these core electrical and mechanical parameters. Variations in power rating (0.25W vs 0.75W), automotive certification (AEC-Q200), and additional features (moisture resistant, pulse withstanding) represent secondary differentiators that do not prevent substitution but may enhance suitability for specific applications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Active Status, ROHS3 Compliant)

RMCF1206FT24K9, AC1206FR-0724K9L, CR1206-FX-2492ELF, CRCW120624K9FKEA, and RC1206FR-0724K9L are all active products with ROHS3 compliance. These parts are suitable for new designs and production environments requiring regulatory compliance. RMCF1206FT24K9 from Stackpole Electronics Inc provides automotive AEC-Q200 qualification from the original manufacturer. AC1206FR-0724K9L and RC1206FR-0724K9L from YAGEO offer moisture-resistant features. CR1206-FX-2492ELF from Bourns Inc. provides moisture resistance without automotive qualification.

Enhanced Performance Option

CRCW120624K9FKEAHP from Vishay Dale offers 0.75W power rating with pulse withstanding capability while maintaining AEC-Q200 qualification and ROHS3 compliance. This part is suitable for applications requiring higher transient energy absorption.

Restricted Substitutes

CRCW120624K9FKTA is RoHS non-compliant and REACH affected, limiting its use to legacy systems or non-regulated applications. ERJ-8ENF2492V carries "Not For New Designs" status and should be used only for maintenance or repair of existing equipment.

Frequently Asked Questions (FAQ)

Q: Can RMCF1206FT24K9 directly replace RMCS1206FT24K9?

A: Yes. Both parts share identical electrical specifications (24.9 kOhms ±1%, 0.25W, ±100ppm/°C, -55°C to 155°C), package (1206), and compliance status (ROHS3). RMCF1206FT24K9 adds automotive AEC-Q200 qualification, making it suitable for automotive applications while remaining compatible with general-purpose circuits.

Q: What is the difference between moisture-resistant and non-moisture-resistant variants?

A: Moisture-resistant variants (AC1206FR-0724K9L, CR1206-FX-2492ELF, RC1206FR-0724K9L) provide enhanced protection against humidity ingress. All listed parts maintain MSL 1 (Unlimited) rating, indicating they do not require special moisture control during storage or handling. Moisture-resistant features provide additional reliability margin in high-humidity environments.

Q: Can CRCW120624K9FKEAHP (0.75W) replace RMCS1206FT24K9 (0.25W)?

A: Yes, electrically and mechanically. The higher power rating (0.75W vs 0.25W) provides additional thermal margin and pulse withstanding capability. Physical dimensions remain within 1206 package specifications. This substitution is suitable when circuit design permits higher power dissipation or when pulse immunity is required.

Q: Why is ERJ-8ENF2492V marked "Not For New Designs"?

A: This designation indicates the manufacturer has discontinued active development and recommends alternative parts for new product development. ERJ-8ENF2492V remains available for maintenance and repair of existing equipment but should not be selected for new circuit designs.

Q: Is CRCW120624K9FKTA suitable for regulated applications?

A: No. CRCW120624K9FKTA is RoHS non-compliant and REACH affected. It is restricted to legacy systems, repair applications, or non-regulated markets. For new designs or regulated environments, select ROHS3-compliant alternatives such as RMCF1206FT24K9, CRCW120624K9FKEA, or AC1206FR-0724K9L.

Q: Do all substitute parts fit the same PCB footprint?

A: Yes. All listed parts use the 1206 (3216 Metric) package with 2 terminations. Physical dimensions vary slightly (length 0.122" to 0.126", height 0.024" to 0.030"), but these variations remain within standard 1206 PCB footprint tolerances and do not require layout modifications.