RC1005F270CS Equivalent & Substitute Parts Reference

Part Overview

The RC1005F270CS is a 27 Ohm ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0402 (1005 Metric) package format. This surface mount device is rated for 0.063W (1/16W) power dissipation with moisture resistant construction and operates across the temperature range of -55°C to 155°C. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and application-specific requirements such as automotive qualification or enhanced environmental protection.

Key Parameters

Parameter	Value
Resistance	27 Ohms
Tolerance	±1%
Power Rating	0.063W (1/16W)
Package / Case	0402 (1005 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C to 155°C
Terminations	2
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the RC1005F270CS is determined by strict equivalence across the following critical parameters: resistance value (27 Ohms), tolerance (±1%), package format (0402 / 1005 Metric), composition (thick film), temperature coefficient (±100ppm/°C), operating temperature range (-55°C to 155°C), and compliance certifications (ROHS3, REACH Unaffected, EAR99).

Substitute parts are categorized into three groups:

Direct Equivalents maintain identical electrical specifications and power rating (0.063W / 1/16W) with interchangeable mechanical dimensions and termination count. These parts are suitable for one-to-one replacement without circuit redesign.

Upgrade Substitutes provide enhanced power rating (0.1W / 1/10W) or additional certifications (Automotive AEC-Q200) while maintaining all other core parameters. These parts offer improved performance margins and are backward compatible.

Similar Substitutes include automotive-qualified variants with additional environmental features (anti-sulfur protection, moisture resistance enhancement) or AEC-Q200 certification. These parts meet or exceed the base specification and are suitable for applications requiring automotive-grade reliability.

All substitute parts share identical package dimensions (0.039" L x 0.020" W / 1.00mm x 0.50mm), height specifications, and two-terminal configuration.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	Features	RoHS	MSL	Substitution Type
RC1005F270CS	Samsung Electro-Mechanics	27 Ω	±1%	0.063	0402	±100ppm/°C	-55 to 155°C	Moisture Resistant	ROHS3	1	Main Part
CR0402-FX-27R0GLF	Bourns Inc.	27 Ω	±1%	0.063	0402	±100ppm/°C	-55 to 155°C	—	ROHS3	1	Direct Equivalent
CRG0402F27R	TE Connectivity Passive Product	27 Ω	±1%	0.063	0402	±100ppm/°C	-55 to 155°C	—	ROHS3	1	Direct Equivalent
RC0402FR-0727RL	YAGEO	27 Ω	±1%	0.063	0402	±100ppm/°C	-55 to 155°C	Moisture Resistant	ROHS3	1	Direct Equivalent
ERJ-2RKF27R0X	Panasonic Electronic Components	27 Ω	±1%	0.1	0402	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	ROHS3	1	Upgrade Substitute
AC0402FR-0727RL	YAGEO	27 Ω	±1%	0.063	0402	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200, Moisture Resistant	ROHS3	1	Similar Substitute
AF0402FR-0727RL	YAGEO	27 Ω	±1%	0.063	0402	±100ppm/°C	-55 to 155°C	Anti-Sulfur, Automotive AEC-Q200	ROHS3	1	Similar Substitute
CRCW040227R0FKED	Vishay Dale	27 Ω	±1%	0.063	0402	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	ROHS3	1	Similar Substitute
RMCF0402FT27R0	Stackpole Electronics Inc	27 Ω	±1%	0.063	0402	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	ROHS3	1	Similar Substitute

Engineering Selection Recommendations

Direct Equivalent Selection: CR0402-FX-27R0GLF (Bourns), CRG0402F27R (TE Connectivity), and RC0402FR-0727RL (YAGEO) are functionally identical to the RC1005F270CS across all electrical and mechanical parameters. These parts are suitable for direct substitution in applications where the original specification is sufficient. All three maintain ROHS3 compliance and MSL 1 rating.

Upgrade Substitute Selection: ERJ-2RKF27R0X (Panasonic) provides increased power rating (0.1W vs. 0.063W) and Automotive AEC-Q200 certification. This part is backward compatible and suitable for applications requiring enhanced thermal performance or automotive-grade reliability without circuit modification.

Automotive-Qualified Selection: AC0402FR-0727RL, AF0402FR-0727RL (YAGEO), CRCW040227R0FKED (Vishay Dale), and RMCF0402FT27R0 (Stackpole) are all AEC-Q200 certified. Selection among these depends on specific environmental requirements: AF0402FR-0727RL includes anti-sulfur protection for corrosive environments; AC0402FR-0727RL combines moisture resistance with automotive qualification; CRCW040227R0FKED and RMCF0402FT27R0 provide standard automotive-grade reliability. All maintain identical electrical specifications and 0402 package format.

All substitute parts are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes.

Frequently Asked Questions (FAQ)

Q: Can CR0402-FX-27R0GLF replace RC1005F270CS in existing designs?

A: Yes. CR0402-FX-27R0GLF is a direct equivalent with identical resistance (27 Ω), tolerance (±1%), power rating (0.063W), package (0402), and operating temperature range (-55°C to 155°C). No circuit redesign is required.

Q: What is the difference between direct equivalents and upgrade substitutes?

A: Direct equivalents (CR0402-FX-27R0GLF, CRG0402F27R, RC0402FR-0727RL) maintain identical specifications including power rating. Upgrade substitutes (ERJ-2RKF27R0X) provide higher power rating (0.1W) and automotive certification while maintaining all other parameters. Upgrade substitutes are backward compatible but offer improved performance margins.

Q: Are automotive AEC-Q200 certified parts suitable for non-automotive applications?

A: Yes. AEC-Q200 certification indicates enhanced reliability testing and environmental performance. These parts (AC0402FR-0727RL, AF0402FR-0727RL, CRCW040227R0FKED, RMCF0402FT27R0) meet or exceed standard specifications and are suitable for any application requiring the 27 Ω ±1% 0402 specification.

Q: What is the significance of anti-sulfur protection in AF0402FR-0727RL?

A: Anti-sulfur protection (AF0402FR-0727RL) is designed for environments with hydrogen sulfide exposure or high-sulfur atmospheric conditions. This feature prevents corrosion of terminations and maintains long-term reliability in industrial or marine applications. For standard environments, this feature is not required.

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

A: All substitute parts are available in 0402 (1005 Metric) package with identical dimensions (0.039" L x 0.020" W / 1.00mm x 0.50mm) and two-terminal configuration. Packaging format options (Tape & Reel, Cut Tape, Digi-Reel) vary by manufacturer and supplier but do not affect electrical or mechanical compatibility.

Q: What is Moisture Sensitivity Level (MSL) 1 and why is it important?

A: MSL 1 indicates unlimited shelf life without moisture baking requirements. All listed parts maintain MSL 1 rating, meaning they can be stored and handled without special moisture control procedures. This simplifies supply chain management and reduces handling costs.

Q: Can ERJ-2RKF27R0X be used as a direct replacement for RC1005F270CS?

A: Yes, with the note that ERJ-2RKF27R0X provides higher power rating (0.1W vs. 0.063W). This is a performance upgrade that is backward compatible. The higher power rating provides additional thermal margin but does not affect circuit operation at the original power levels.

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