RMCS0805FT2R21 Equivalent & Substitute Parts

Part Overview

The RMCS0805FT2R21 is a 2.21 Ohm ±1% 0.125W thick film chip resistor in 0805 (2012 Metric) package manufactured by Stackpole Electronics Inc. This component is currently active in production and widely used in general-purpose electronic applications requiring precision resistive elements with anti-sulfur protection. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when application-specific requirements necessitate alternative specifications.

Substiute Parts

RMCS0805FT2R21

Stackpole Electronics IncIn Stock: 980RMCS0805FT2R21 Datasheet

Current PartRFQ

RMCF0805FT2R21

Stackpole Electronics IncIn Stock: 13498RMCF0805FT2R21 Datasheet

MFR RecommendedRFQ

RC0805FR-072R21L

YAGEOIn Stock: 106643RC0805FR-072R21L Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RMCS0805FT2R21 are qualified based on the following critical parameters that determine functional and mechanical compatibility:

• Resistance value: 2.21 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.125W / 1/8W (exact match required)
• Package: 0805 (2012 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Temperature coefficient: ±200ppm/°C (exact match required)
• Operating temperature range: -55°C ~ 155°C (exact match required)
• RoHS compliance: ROHS3 Compliant (exact match required)
• Moisture sensitivity: MSL 1 (exact match required)

All identified substitutes meet these core electrical and mechanical parameters. Variations in specific features (such as anti-sulfur protection versus automotive qualification) do not affect the fundamental substitution relationship when the above parameters are identical.

Parameter Comparison

Engineering Selection Recommendations

All three parts are active products with ROHS3 compliance and MSL 1 rating, making them suitable for general-purpose applications. The RMCF0805FT2R21 carries AEC-Q200 automotive qualification, appropriate for automotive-grade applications. The RC0805FR-072R21L from YAGEO provides an alternative from a different manufacturer with moisture-resistant characteristics. The RMCS0805FT2R21 features anti-sulfur protection. Selection should be based on application requirements, supply chain availability, and any specific certifications mandated by the end application.

Frequently Asked Questions (FAQ)

Q: Can RMCF0805FT2R21 replace RMCS0805FT2R21 in all applications?

A: Yes, provided the application does not specifically require anti-sulfur protection. Both parts share identical electrical specifications, tolerance, power rating, package dimensions, and operating temperature range. The RMCF0805FT2R21 adds automotive AEC-Q200 qualification, which does not restrict its use in non-automotive applications.

Q: What is the difference between the height specifications of these parts?

A: RMCS0805FT2R21 and RC0805FR-072R21L have a maximum seated height of 0.024" (0.60mm), while RMCF0805FT2R21 has a maximum seated height of 0.026" (0.65mm). This 0.002" difference may be critical in space-constrained PCB designs with tight component clearances.

Q: Are all three parts pin-compatible?

A: Yes. All three parts are 0805 (2012 Metric) package resistors with two terminations and identical footprint dimensions of 0.079" L x 0.049" W (2.00mm x 1.25mm).

Q: Can RC0805FR-072R21L from YAGEO be used as a direct substitute?

A: Yes. The RC0805FR-072R21L meets all core electrical and mechanical parameters: 2.21 Ohms ±1%, 0.125W power rating, 0805 package, ±200ppm/°C temperature coefficient, -55°C ~ 155°C operating range, ROHS3 compliance, and MSL 1 rating. It is a qualified substitute from an alternative manufacturer.

Q: What certifications apply to all substitute parts?

A: All three parts are ROHS3 compliant, REACH unaffected, and carry ECCN EAR99 classification. All have MSL 1 (Unlimited) moisture sensitivity rating.