RMCS0805FT20R0 Equivalent & Substitute Parts

Part Overview

The RMCS0805FT20R0 is a 20 Ohm ±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 and is ROHS3 compliant with unlimited moisture sensitivity rating. The part is currently active in production with 656 units in stock. Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and application-specific requirements such as automotive qualification or enhanced power ratings.

Key Parameters

Parameter	Value
Resistance	20 Ohms
Tolerance	±1%
Power Rating	0.125W (1/8W)
Package / Case	0805 (2012 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C ~ 155°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by matching the following critical parameters: resistance value (20 Ohms), tolerance (±1%), package type (0805 / 2012 Metric), composition (thick film), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C ~ 155°C). All identified substitutes meet these core electrical and mechanical specifications.

Substitute parts are grouped into three categories based on additional features and certifications:

Category 1: Automotive AEC-Q200 Qualified (1/8W Rating) Parts meeting automotive qualification standards with standard 0.125W power rating. These include RMCF0805FT20R0 (Stackpole), CRCW080520R0FKEA (Vishay Dale), CRCW080520R0FKTA (Vishay Dale), and ERJ-6ENF20R0V (Panasonic).

Category 2: Enhanced Power Rating with Automotive Qualification Parts with increased power dissipation capability (0.4W to 0.5W) and pulse withstanding features. These include CRCW080520R0FKEAHP (Vishay Dale, 0.5W) and ESR10EZPF20R0 (Rohm Semiconductor, 0.4W).

Category 3: Moisture Resistant Standard Grade Parts without automotive qualification but with moisture resistant features and standard 0.125W rating. These include RC0805FR-0720RL (YAGEO) and RC2012F200CS (Samsung Electro-Mechanics).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (Watts)	Package	Temp Coeff	Operating Temp	Features	RoHS Status	Height Max (mm)
RMCS0805FT20R0	Stackpole Electronics Inc	20 Ohms	±1%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	Anti-Sulfur	ROHS3	0.60
RMCF0805FT20R0	Stackpole Electronics Inc	20 Ohms	±1%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	ROHS3	0.65
CRCW080520R0FKEA	Vishay Dale	20 Ohms	±1%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	ROHS3	0.50
CRCW080520R0FKEAHP	Vishay Dale	20 Ohms	±1%	0.5W	0805	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200, Pulse Withstanding	ROHS3	0.50
CRCW080520R0FKTA	Vishay Dale	20 Ohms	±1%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	RoHS non-compliant	0.50
ERJ-6ENF20R0V	Panasonic Electronic Components	20 Ohms	±1%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	ROHS3	0.70
ESR10EZPF20R0	Rohm Semiconductor	20 Ohms	±1%	0.4W	0805	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200, Pulse Withstanding	ROHS3	0.65
RC0805FR-0720RL	YAGEO	20 Ohms	±1%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	ROHS3	0.60
RC2012F200CS	Samsung Electro-Mechanics	20 Ohms	±1%	0.125W	0805	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	ROHS3	0.65

Engineering Selection Recommendations

For Automotive Applications: Select RMCF0805FT20R0, CRCW080520R0FKEA, CRCW080520R0FKEAHP, ERJ-6ENF20R0V, or ESR10EZPF20R0. All carry AEC-Q200 automotive qualification. CRCW080520R0FKEAHP and ESR10EZPF20R0 provide enhanced power dissipation (0.4W to 0.5W) with pulse withstanding capability for demanding automotive circuits.

For RoHS3 Compliance: All substitutes except CRCW080520R0FKTA meet ROHS3 compliance. CRCW080520R0FKTA is RoHS non-compliant and REACH affected; use only where legacy compliance is acceptable.

For Standard Industrial Applications: RC0805FR-0720RL (YAGEO) and RC2012F200CS (Samsung Electro-Mechanics) provide moisture-resistant thick film construction without automotive qualification, suitable for general-purpose applications.

For Direct Pin-Compatible Replacement: RMCF0805FT20R0 maintains the same manufacturer (Stackpole) and series lineage as the primary part, offering the closest functional equivalence with automotive qualification upgrade.

For High-Reliability Applications: ESR10EZPF20R0 and CRCW080520R0FKEAHP both feature pulse withstanding capability in addition to AEC-Q200 qualification, providing enhanced robustness for transient-prone circuits.

Frequently Asked Questions (FAQ)

Q: Can RMCF0805FT20R0 directly replace RMCS0805FT20R0? A: Yes. Both are 20 Ohm ±1% 0.125W 0805 thick film resistors from Stackpole Electronics Inc with identical electrical specifications. RMCF0805FT20R0 adds automotive AEC-Q200 qualification. Physical height differs by 0.05mm (0.65mm vs 0.60mm), which is negligible for standard PCB layouts.

Q: What is the difference between standard and AEC-Q200 qualified parts? A: AEC-Q200 qualification indicates the part meets automotive industry reliability and quality standards including thermal cycling, moisture resistance, and failure rate testing. Use AEC-Q200 parts for automotive applications; standard parts are acceptable for non-automotive use.

Q: Can I use CRCW080520R0FKEAHP (0.5W) in place of RMCS0805FT20R0 (0.125W)? A: Yes, electrically and mechanically. The higher power rating (0.5W vs 0.125W) provides additional thermal margin and is a direct upgrade. Verify PCB layout accommodates the 0.50mm maximum height (vs 0.60mm original).

Q: Is CRCW080520R0FKTA suitable for new designs? A: CRCW080520R0FKTA is RoHS non-compliant and REACH affected. It is suitable only for legacy product support or applications where RoHS exemption applies. For new designs, select ROHS3 compliant alternatives.

Q: What is the significance of moisture resistant features in RC0805FR-0720RL and RC2012F200CS? A: Moisture resistant thick film construction provides enhanced protection against humidity-induced performance degradation. These parts are suitable for general industrial environments without automotive qualification requirements.

Q: Are all substitutes available in the same packaging format? A: Packaging formats vary. RMCS0805FT20R0 and most substitutes are supplied in Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel formats. Verify packaging availability with your supplier for production requirements.

Q: Can I mix different manufacturers in the same circuit board? A: Yes. All substitutes meet identical electrical specifications (20 Ohms ±1%, 0805 package, ±100ppm/°C). Mixing manufacturers is acceptable provided compliance requirements (RoHS, automotive qualification) are met for the application.

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