RMCS1206FT12K1 Equivalent & Substitute Parts

Part Overview

The RMCS1206FT12K1 is a 12.1 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. The part is currently active in production with 1053 units in stock.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when design requirements mandate specific certifications (such as AEC-Q200 automotive qualification), or when alternative packaging or performance characteristics better suit application needs.

Substiute Parts

RMCS1206FT12K1

Stackpole Electronics IncIn Stock: 1131RMCS1206FT12K1 Datasheet

Current PartRFQ

RMCF1206FT12K1

Stackpole Electronics IncIn Stock: 233584RMCF1206FT12K1 Datasheet

MFR RecommendedRFQ

CR1206-FX-1212ELF

Bourns Inc.In Stock: 20189CR1206-FX-1212ELF Datasheet

MFR RecommendedRFQ

CRCW120612K1FKEA

Vishay DaleIn Stock: 17154CRCW120612K1FKEA Datasheet

MFR RecommendedRFQ

CRCW120612K1FKEAHP

Vishay DaleIn Stock: 51728CRCW120612K1FKEAHP Datasheet

MFR RecommendedRFQ

CRCW120612K1FKTA

Vishay DaleIn Stock: 5255CRCW120612K1FKTA Datasheet

MFR RecommendedRFQ

ERJ-8ENF1212V

Panasonic Electronic ComponentsIn Stock: 25797ERJ-8ENF1212V Datasheet

MFR RecommendedRFQ

RC1206FR-0712K1L

YAGEOIn Stock: 122488RC1206FR-0712K1L Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters:

• Resistance value: 12.1 kOhms
• Tolerance: ±1%
• Package / Case: 1206 (3216 Metric)
• Composition: Thick Film
• Temperature Coefficient: ±100ppm/°C
• Operating Temperature Range: -55°C ~ 155°C
• Moisture Sensitivity Level: 1 (Unlimited)

All substitute parts listed maintain these core electrical and mechanical specifications. Variations in power rating, special features (automotive AEC-Q200, pulse withstanding, moisture resistant, anti-sulfur), physical dimensions within tolerance, and RoHS compliance status are noted but do not disqualify substitution when the above parameters are met.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Active Status, ROHS3 Compliant):

RMCF1206FT12K1 (Stackpole Electronics Inc) is the manufacturer-recommended substitute with automotive AEC-Q200 qualification. This part maintains identical electrical specifications and offers enhanced reliability for automotive applications.

CRCW120612K1FKEA (Vishay Dale) and CRCW120612K1FKTA (Vishay Dale) are active alternatives with AEC-Q200 certification. CRCW120612K1FKEA maintains full ROHS3 compliance, while CRCW120612K1FKTA is RoHS non-compliant and REACH affected.

CR1206-FX-1212ELF (Bourns Inc.) and RC1206FR-0712K1L (YAGEO) are active alternatives with moisture-resistant characteristics and full ROHS3 compliance.

Higher Power Rating Option:

CRCW120612K1FKEAHP (Vishay Dale) provides 0.75W power rating with pulse withstanding capability and AEC-Q200 qualification. This part is suitable for applications requiring higher transient energy dissipation while maintaining the same resistance and tolerance specifications.

Legacy Status:

ERJ-8ENF1212V (Panasonic Electronic Components) carries "Not For New Designs" status despite ROHS3 compliance and AEC-Q200 qualification. This part remains available but should not be selected for new designs.

Frequently Asked Questions (FAQ)

Q: Can CRCW120612K1FKEAHP (0.75W) be used as a direct substitute for RMCS1206FT12K1 (0.25W)?

A: Yes. The higher power rating does not disqualify substitution. The 0.75W part maintains all required electrical parameters (12.1 kOhms ±1%, ±100ppm/°C, -55°C to 155°C) and package specifications (1206). Higher power rating provides additional thermal margin and is electrically compatible in circuits designed for 0.25W operation.

Q: What is the difference between anti-sulfur and moisture-resistant features?

A: Anti-sulfur (RMCS1206FT12K1) and moisture-resistant (CR1206-FX-1212ELF, RC1206FR-0712K1L) are distinct protective features. Both parts maintain identical electrical specifications and MSL rating. Feature selection depends on environmental exposure requirements in the specific application.

Q: Why is CRCW120612K1FKTA listed as RoHS non-compliant?

A: CRCW120612K1FKTA is marked RoHS non-compliant and REACH affected. This part remains electrically equivalent but may not meet regulatory requirements for applications subject to RoHS or REACH restrictions. Verify compliance requirements before selection.

Q: Are all substitute parts available in the same packaging?

A: All substitute parts are available in 1206 (3216 Metric) package. Packaging format varies: RMCF1206FT12K1, CRCW120612K1FKEAHP, CRCW120612K1FKTA, and ERJ-8ENF1212V are supplied in Tape & Reel (TR). CRCW120612K1FKEA is supplied in Cut Tape (CT) & Digi-Reel. RC1206FR-0712K1L is supplied in Tape & Reel (TR). Verify packaging compatibility with assembly equipment.

Q: Should ERJ-8ENF1212V be used in new designs?

A: No. ERJ-8ENF1212V carries "Not For New Designs" status. While electrically equivalent and ROHS3 compliant, this part should be reserved for legacy system maintenance or repair only. Select from active-status alternatives for new designs.

Q: What is the significance of AEC-Q200 certification?

A: AEC-Q200 certification indicates automotive-grade qualification. Parts with this rating (RMCF1206FT12K1, CRCW120612K1FKEA, CRCW120612K1FKEAHP, ERJ-8ENF1212V) meet automotive reliability and performance standards. Selection depends on application requirements; non-automotive applications do not require this certification.