RMCS0805FT4K02 Equivalent & Substitute Parts

Part Overview

The RMCS0805FT4K02 is a 4.02 kOhms ±1% 0.125W thick film chip resistor in 0805 (2012 Metric) package manufactured by Stackpole Electronics Inc. This anti-sulfur resistor operates across -55°C to 155°C with a temperature coefficient of ±100ppm/°C. The part is active and ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1). Equivalent and substitute parts are necessary to address supply chain flexibility, alternative sourcing options, and specific application requirements such as automotive qualification or enhanced pulse withstanding capabilities.

Substiute Parts

RMCS0805FT4K02

Stackpole Electronics IncIn Stock: 1204RMCS0805FT4K02 Datasheet

Current PartRFQ

RMCF0805FT4K02

Stackpole Electronics IncIn Stock: 8511RMCF0805FT4K02 Datasheet

MFR RecommendedRFQ

AC0805FR-074K02L

YAGEOIn Stock: 10793AC0805FR-074K02L Datasheet

MFR RecommendedRFQ

CRCW08054K02FKEA

Vishay DaleIn Stock: 37058CRCW08054K02FKEA Datasheet

MFR RecommendedRFQ

CRCW08054K02FKEAHP

Vishay DaleIn Stock: 19476CRCW08054K02FKEAHP Datasheet

MFR RecommendedRFQ

CRCW08054K02FKTA

Vishay DaleIn Stock: 2129CRCW08054K02FKTA Datasheet

MFR RecommendedRFQ

ERJ-6ENF4021V

Panasonic Electronic ComponentsIn Stock: 134337ERJ-6ENF4021V Datasheet

MFR RecommendedRFQ

ESR10EZPF4021

Rohm SemiconductorIn Stock: 27481ESR10EZPF4021 Datasheet

MFR RecommendedRFQ

RC0805FR-074K02L

YAGEOIn Stock: 96954RC0805FR-074K02L Datasheet

MFR RecommendedRFQ

RCS08054K02FKEA

Vishay DaleIn Stock: 7409RCS08054K02FKEA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RMCS0805FT4K02 is determined by strict equivalence across the following parameters: resistance value (4.02 kOhms), tolerance (±1%), package type (0805 2012 Metric), composition (thick film), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C to 155°C). Power rating may vary upward without affecting basic functionality, as higher power-rated components in the same package can safely replace lower-rated versions in most applications. All substitute parts listed maintain these core electrical and mechanical specifications. Automotive AEC-Q200 qualification and pulse withstanding features are additional certifications that enhance suitability for specific applications but do not disqualify non-qualified alternatives for general use.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain electrical and mechanical compatibility with the RMCS0805FT4K02 across resistance, tolerance, package, composition, and temperature specifications. Selection among substitutes depends on specific application requirements:

For automotive applications requiring AEC-Q200 qualification, select from RMCF0805FT4K02, AC0805FR-074K02L, CRCW08054K02FKEA, CRCW08054K02FKEAHP, CRCW08054K02FKTA, ERJ-6ENF4021V, or RCS08054K02FKEA.

For applications requiring ROHS3 compliance without exception, exclude CRCW08054K02FKTA, which is RoHS non-compliant and REACH affected.

For applications requiring enhanced pulse withstanding capability, select CRCW08054K02FKEAHP, ESR10EZPF4021, or RCS08054K02FKEA, which feature pulse withstanding characteristics and higher power ratings (0.4W to 0.5W).

For general industrial applications without automotive qualification requirements, RC0805FR-074K02L and RC0805FR-074K02L provide moisture-resistant thick film construction with ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can I use a higher power-rated substitute such as CRCW08054K02FKEAHP (0.5W) in place of the RMCS0805FT4K02 (0.125W)?

A: Yes. Higher power-rated resistors in the same package maintain all electrical parameters (resistance, tolerance, temperature coefficient) and physical dimensions. The increased power rating provides additional thermal margin and does not negatively affect circuit performance.

Q: What is the difference between RMCS0805FT4K02 and RMCF0805FT4K02?

A: Both parts are manufactured by Stackpole Electronics Inc with identical electrical specifications. RMCF0805FT4K02 includes automotive AEC-Q200 qualification and has a maximum seated height of 0.026" compared to 0.024" for the RMCS variant. The RMCF series is suitable for automotive applications.

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

A: All listed substitutes are available in Tape & Reel (TR) packaging, which is the standard for high-volume surface mount assembly. CRCW08054K02FKTA is also available in Cut Tape (CT) & Digi-Reel format for lower-volume requirements.

Q: Which substitute offers the best thermal performance in the 0805 package?

A: CRCW08054K02FKEA and CRCW08054K02FKEAHP both feature the lowest maximum seated height of 0.020", which can provide marginal thermal advantages in dense PCB layouts. However, all parts operate within the same temperature range (-55°C to 155°C).

Q: Is RoHS compliance mandatory for all substitutes?

A: CRCW08054K02FKTA is RoHS non-compliant and REACH affected. For applications requiring RoHS3 compliance, select from the remaining nine substitute options, all of which are ROHS3 compliant and REACH unaffected.

Q: Can I substitute the RMCS0805FT4K02 with RC0805FR-074K02L?

A: Yes. RC0805FR-074K02L maintains all core electrical and mechanical specifications with moisture-resistant thick film construction. However, it does not carry AEC-Q200 automotive qualification, making it suitable for general industrial applications only.