RMCS0805FT301R Equivalent & Substitute Parts

Part Overview

The RMCS0805FT301R is a 301 Ohms ±1% 0.125W (1/8W) chip resistor in 0805 (2012 Metric) package manufactured by Stackpole Electronics Inc. This anti-sulfur thick film resistor operates across -55°C to 155°C and is ROHS3 compliant. The part is active in production with 814 units currently in stock. Equivalent and substitute parts are necessary to ensure design flexibility, manage supply chain continuity, and accommodate specific application requirements such as automotive qualification or enhanced pulse withstanding capabilities.

Substiute Parts

RMCS0805FT301R

Stackpole Electronics IncIn Stock: 851RMCS0805FT301R Datasheet

Current PartRFQ

RMCF0805FT301R

Stackpole Electronics IncIn Stock: 109525RMCF0805FT301R Datasheet

MFR RecommendedRFQ

AC0805FR-07301RL

YAGEOIn Stock: 10921AC0805FR-07301RL Datasheet

MFR RecommendedRFQ

CRCW0805301RFKEA

Vishay DaleIn Stock: 20271CRCW0805301RFKEA Datasheet

MFR RecommendedRFQ

CRCW0805301RFKEAHP

Vishay DaleIn Stock: 6274CRCW0805301RFKEAHP Datasheet

MFR RecommendedRFQ

CRCW0805301RFKTA

Vishay DaleIn Stock: 5876CRCW0805301RFKTA Datasheet

MFR RecommendedRFQ

ERJ-6ENF3010V

Panasonic Electronic ComponentsIn Stock: 136760ERJ-6ENF3010V Datasheet

MFR RecommendedRFQ

RC0805FR-07301RL

YAGEOIn Stock: 372863RC0805FR-07301RL Datasheet

MFR RecommendedRFQ

RCS0805301RFKEA

Vishay DaleIn Stock: 11566RCS0805301RFKEA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RMCS0805FT301R is determined by the following critical parameters:

• Resistance Value: 301 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Package / Case: 0805 (2012 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)
• Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

Substitute parts are grouped into two categories based on power rating:

Category A - Standard 1/8W (0.125W) Rating: RMCF0805FT301R, AC0805FR-07301RL, CRCW0805301RFKEA, CRCW0805301RFKTA, ERJ-6ENF3010V, RC0805FR-07301RL

Category B - Enhanced 1/2W (0.5W) Rating: CRCW0805301RFKEAHP, RCS0805301RFKEA

Parts in Category B feature higher power ratings and pulse withstanding capabilities while maintaining all other critical parameters. Selection between categories depends on circuit power dissipation requirements.

Parameter Comparison

Engineering Selection Recommendations

For Standard Applications (1/8W Power Rating)

RMCF0805FT301R, AC0805FR-07301RL, CRCW0805301RFKEA, ERJ-6ENF3010V, and RC0805FR-07301RL are direct substitutes with identical electrical specifications. All are ROHS3 compliant and active in production. RMCF0805FT301R maintains the same manufacturer (Stackpole) as the original part. AC0805FR-07301RL and RC0805FR-07301RL from YAGEO include moisture-resistant features. CRCW0805301RFKEA and ERJ-6ENF3010V include automotive AEC-Q200 qualification.

CRCW0805301RFKTA is electrically equivalent but is RoHS non-compliant and REACH affected, making it unsuitable for applications requiring regulatory compliance.

For Enhanced Power Dissipation (1/2W Power Rating)

CRCW0805301RFKEAHP and RCS0805301RFKEA provide 0.5W power rating with pulse withstanding capability while maintaining all other critical parameters. These parts are suitable for applications requiring higher transient energy absorption. Both are ROHS3 compliant and automotive AEC-Q200 qualified.

Compliance Considerations

All recommended substitutes except CRCW0805301RFKTA are ROHS3 compliant. For applications requiring automotive qualification, select from RMCF0805FT301R, AC0805FR-07301RL, CRCW0805301RFKEA, CRCW0805301RFKEAHP, ERJ-6ENF3010V, or RCS0805301RFKEA.

Frequently Asked Questions (FAQ)

Q: Can I substitute RMCS0805FT301R with any of the listed parts?

A: Yes, all listed parts share identical resistance (301 Ohms), tolerance (±1%), package (0805), composition (thick film), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C ~ 155°C). Electrical substitution is valid. Physical fit must be verified based on PCB layout constraints and height clearance requirements.

Q: What is the difference between 1/8W and 1/2W rated parts?

A: Power rating indicates maximum continuous power dissipation. 1/8W parts (0.125W) are suitable for standard signal and bias applications. 1/2W parts (0.5W) accommodate higher power dissipation and pulse withstanding events. Select based on circuit power requirements.

Q: Are all substitutes automotive qualified?

A: No. RMCS0805FT301R, RC0805FR-07301RL, and RCS0805301RFKEA lack automotive AEC-Q200 qualification. RMCF0805FT301R, AC0805FR-07301RL, CRCW0805301RFKEA, CRCW0805301RFKEAHP, ERJ-6ENF3010V, and RCS0805301RFKEA include AEC-Q200 qualification. Select based on application requirements.

Q: Why is CRCW0805301RFKTA not recommended?

A: CRCW0805301RFKTA is RoHS non-compliant and REACH affected. It is electrically equivalent but unsuitable for applications requiring regulatory compliance with ROHS3 standards.

Q: What are the height differences among substitutes?

A: Seated heights range from 0.020" (0.50mm) to 0.028" (0.70mm). CRCW0805301RFKEA and CRCW0805301RFKTA are lowest at 0.020". RMCS0805FT301R, AC0805FR-07301RL, RC0805FR-07301RL, and CRCW0805301RFKEAHP are 0.024". RMCF0805FT301R is 0.026". ERJ-6ENF3010V is highest at 0.028". Verify PCB clearance before substitution.

Q: Can I use moisture-resistant variants in standard applications?

A: Yes. AC0805FR-07301RL and RC0805FR-07301RL include moisture-resistant features and are suitable for all applications where the original part is used. Moisture resistance provides additional environmental protection without compromising electrical performance.