RMCS0805FT1R43 Equivalent & Substitute Parts

Part Overview

The RMCS0805FT1R43 is a 1.43 Ohm ±1% 0.125W (1/8W) chip resistor in 0805 (2012 Metric) package manufactured by Stackpole Electronics Inc. This thick film resistor features anti-sulfur construction and is designed for general-purpose applications requiring precision resistance values in compact form factors. The part maintains Active product status with 747 units currently in stock. Substitute parts are identified when supply constraints, lead time requirements, or inventory availability necessitate alternative sourcing while maintaining identical electrical and mechanical specifications.

Substiute Parts

RMCS0805FT1R43

Stackpole Electronics IncIn Stock: 786RMCS0805FT1R43 Datasheet

Current PartRFQ

RC0805FR-071R43L

YAGEOIn Stock: 9442RC0805FR-071R43L Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RMCS0805FT1R43 is determined by strict equivalence across the following critical parameters:

• Resistance value: 1.43 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.125W / 1/8W (exact match required)
• Package / Case: 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)
• Physical dimensions: 0.079" L x 0.049" W / 2.00mm x 1.25mm (exact match required)
• Termination count: 2 (exact match required)
• Regulatory compliance: ROHS3 Compliant, REACH Unaffected (exact match required)

The RC0805FR-071R43L from YAGEO meets all substitution criteria and is classified as a manufacturer-recommended equivalent.

Parameter Comparison

Engineering Selection Recommendations

Both the RMCS0805FT1R43 and RC0805FR-071R43L maintain Active product status and satisfy identical regulatory requirements under ROHS3 and REACH standards. Selection between these parts is based on availability and supply chain considerations rather than electrical or mechanical differentiation. The RC0805FR-071R43L from YAGEO is designated as the manufacturer-recommended substitute and currently maintains higher inventory availability (9402 units) compared to the primary part (747 units). Both parts are suitable for direct substitution in applications requiring 1.43 Ohm ±1% precision resistors in 0805 package format.

Frequently Asked Questions (FAQ)

Q: Can the RC0805FR-071R43L replace the RMCS0805FT1R43 in existing designs?

A: Yes. Both parts are electrically and mechanically equivalent across all specified parameters including resistance value, tolerance, power rating, package dimensions, and operating temperature range. Direct substitution is supported without design modification.

Q: Are there differences in the thick film construction between these parts?

A: The RMCS0805FT1R43 features anti-sulfur thick film construction, while the RC0805FR-071R43L features moisture-resistant thick film construction. Both are thick film compositions meeting the same electrical specifications and temperature coefficient requirements.

Q: Do both parts meet the same regulatory compliance standards?

A: Yes. Both the RMCS0805FT1R43 and RC0805FR-071R43L are ROHS3 Compliant and REACH Unaffected, with identical Moisture Sensitivity Level (MSL) ratings of 1 (Unlimited).

Q: Are the physical dimensions identical for PCB assembly?

A: Yes. Both parts share identical dimensions of 0.079" L x 0.049" W (2.00mm x 1.25mm) with maximum seated height of 0.024" (0.60mm), ensuring compatibility with existing PCB layouts and assembly processes.

Q: What is the basis for substitution between these two parts?

A: Substitution is based on exact equivalence across resistance value (1.43 Ohms), tolerance (±1%), power rating (0.125W), package type (0805), composition (thick film), temperature coefficient (±200ppm/°C), operating temperature range (-55°C ~ 155°C), and regulatory compliance status.