RMCS1206FT301K Equivalent & Substitute Parts

Part Overview

The RMCS1206FT301K is a 301 kOhms ±1% 0.25W thick film chip resistor in 1206 (3216 Metric) surface mount package manufactured by Stackpole Electronics Inc. This anti-sulfur formulation resistor operates across -55°C to 155°C and is RoHS3 compliant with unlimited moisture sensitivity rating. Substitute parts are necessary to address supply availability, design requirements for automotive qualification, enhanced power handling, or specific environmental performance characteristics while maintaining electrical and mechanical compatibility.

Substiute Parts

RMCS1206FT301K

Stackpole Electronics IncIn Stock: 968RMCS1206FT301K Datasheet

Current PartRFQ

RMCF1206FT301K

Stackpole Electronics IncIn Stock: 115996RMCF1206FT301K Datasheet

MFR RecommendedRFQ

CR1206-FX-3013ELF

Bourns Inc.In Stock: 35224CR1206-FX-3013ELF Datasheet

MFR RecommendedRFQ

CRCW1206301KFKEA

Vishay DaleIn Stock: 23508CRCW1206301KFKEA Datasheet

MFR RecommendedRFQ

CRCW1206301KFKEAHP

Vishay DaleIn Stock: 100889CRCW1206301KFKEAHP Datasheet

MFR RecommendedRFQ

ERJ-8ENF3013V

Panasonic Electronic ComponentsIn Stock: 2090ERJ-8ENF3013V Datasheet

MFR RecommendedRFQ

RC1206FR-07301KL

YAGEOIn Stock: 6199RC1206FR-07301KL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

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

Core Substitution Criteria:

• Resistance value: 301 kOhms (exact match required)
• Tolerance: ±1% (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)
• Terminations: 2 (exact match required)
• RoHS3 Compliance: Required
• MSL Rating: 1 (Unlimited) (exact match required)

Allowable Variations:

• Power rating: May be equal or higher than 0.25W
• Physical dimensions: Minor variations within package specification tolerance
• Features: May include additional certifications (AEC-Q200, Automotive qualification, Pulse Withstanding, Moisture Resistant) without compromising base electrical performance
• Manufacturer: Different manufacturers acceptable if all electrical and mechanical parameters match

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Active Status, Recommended for New Designs):

RMCF1206FT301K, CRCW1206301KFKEA, and CR1206-FX-3013ELF are direct electrical and mechanical equivalents with active product status. RMCF1206FT301K maintains manufacturer continuity with Stackpole and adds automotive AEC-Q200 qualification. CRCW1206301KFKEA and CR1206-FX-3013ELF provide alternative sourcing from established manufacturers with equivalent electrical performance.

Enhanced Power Rating Option:

CRCW1206301KFKEAHP provides 0.75W power rating with automotive AEC-Q200 and pulse withstanding capability. This substitute accommodates designs requiring higher transient energy dissipation while maintaining all other electrical parameters and package compatibility.

Moisture-Resistant Variants:

CR1206-FX-3013ELF and RC1206FR-07301KL incorporate moisture-resistant formulations suitable for applications with elevated humidity exposure or condensation risk.

Legacy Status:

ERJ-8ENF3013V meets all electrical and mechanical substitution criteria but carries "Not For New Designs" status. Use only for legacy system maintenance or repair applications where design continuity is required.

Frequently Asked Questions (FAQ)

Q: Can CRCW1206301KFKEAHP (0.75W) replace RMCS1206FT301K (0.25W)?

A: Yes. The 0.75W rating is a higher power capability that maintains full backward compatibility. The resistor will operate within specification in any circuit designed for 0.25W or lower power dissipation.

Q: Are automotive AEC-Q200 qualified parts (RMCF1206FT301K, CRCW1206301KFKEA) suitable for non-automotive applications?

A: Yes. AEC-Q200 qualification represents additional testing and reliability assurance. These parts meet or exceed standard commercial specifications and are fully compatible with non-automotive designs.

Q: What is the difference between anti-sulfur (RMCS1206FT301K) and moisture-resistant (CR1206-FX-3013ELF, RC1206FR-07301KL) formulations?

A: Anti-sulfur formulation protects against sulfur-containing atmospheric contaminants. Moisture-resistant formulation provides enhanced protection against humidity and condensation. Both are RoHS3 compliant with MSL 1 rating. Selection depends on specific environmental exposure conditions.

Q: Are there physical dimension differences between substitute parts?

A: Minor variations exist within 1206 package tolerance. RMCS1206FT301K and RC1206FR-07301KL measure 0.122" L × 0.061" W. RMCF1206FT301K, CR1206-FX-3013ELF, and CRCW1206301KFKEA measure 0.126" L × 0.063" W. CRCW1206301KFKEAHP measures 0.122" L × 0.063" W. All variations remain within standard 1206 package specification and are mechanically interchangeable on standard PCB layouts.

Q: Can ERJ-8ENF3013V be used in new designs?

A: ERJ-8ENF3013V carries "Not For New Designs" status. Use RMCF1206FT301K, CRCW1206301KFKEA, CR1206-FX-3013ELF, or RC1206FR-07301KL for new design implementations.

Q: What is the inventory status of these substitutes?

A: CRCW1206301KFKEAHP (100,838 pcs), RMCF1206FT301K (115,964 pcs), and CR1206-FX-3013ELF (35,205 pcs) maintain substantial stock levels. RC1206FR-07301KL (6,118 pcs) and ERJ-8ENF3013V (2,023 pcs) have lower availability.