RC1005F2742CS Equivalent & Substitute Parts Reference

Part Overview

The RC1005F2742CS is a 27.4 kOhms ±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 and features moisture-resistant construction. The part is currently in active production status with 709 units available in inventory. Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design requirements necessitate alternative sourcing from qualified manufacturers.

Key Parameters

Parameter	Value	Unit
Resistance	27.4	kOhms
Tolerance	±1	%
Power Rating	0.063	W (1/16W)
Package	0402 (1005 Metric)	—
Composition	Thick Film	—
Temperature Coefficient	±100	ppm/°C
Operating Temperature Range	-55 to 155	°C
Moisture Sensitivity Level	1 (Unlimited)	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the RC1005F2742CS is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

Resistance value: 27.4 kOhms (exact match required)
Tolerance: ±1% (exact match required)
Package: 0402 (1005 Metric) (exact match required)
Composition: Thick Film (exact match required)
Temperature Coefficient: ±100ppm/°C (exact match required)
Operating Temperature Range: -55°C to 155°C (exact match required)
Moisture Sensitivity Level: 1 (Unlimited) (exact match required)
RoHS Compliance: ROHS3 Compliant (exact match required)

Secondary Consideration:

Power Rating: 0.063W (1/16W) minimum; higher ratings (0.1W/1/10W) are acceptable as upgrades
Features: Moisture resistance and automotive qualification (AEC-Q200) are optional enhancements

Parts are grouped as Direct Equivalents when all primary criteria match exactly. Parts with identical primary parameters but enhanced power ratings or additional certifications are classified as Upgrades. Parts meeting all primary criteria with additional automotive qualification are classified as Similar alternatives.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Composition	Temp Coeff (ppm/°C)	Op Temp (°C)	Features	RoHS	MSL
RC1005F2742CS	Samsung Electro-Mechanics	27.4 kΩ	±1%	0.063	0402	Thick Film	±100	-55 to 155	Moisture Resistant	ROHS3	1
CR0402-FX-2742GLF	Bourns Inc.	27.4 kΩ	±1%	0.063	0402	Thick Film	±100	-55 to 155	—	ROHS3	1
RC0402FR-0727K4L	YAGEO	27.4 kΩ	±1%	0.063	0402	Thick Film	±100	-55 to 155	Moisture Resistant	ROHS3	1
ERJ-2RKF2742X	Panasonic Electronic Components	27.4 kΩ	±1%	0.1	0402	Thick Film	±100	-55 to 155	Automotive AEC-Q200	ROHS3	1
AC0402FR-0727K4L	YAGEO	27.4 kΩ	±1%	0.063	0402	Thick Film	±100	-55 to 155	Automotive AEC-Q200, Moisture Resistant	ROHS3	1
CRCW040227K4FKED	Vishay Dale	27.4 kΩ	±1%	0.063	0402	Thick Film	±100	-55 to 155	Automotive AEC-Q200	ROHS3	1
RMCF0402FT27K4	Stackpole Electronics Inc	27.4 kΩ	±1%	0.063	0402	Thick Film	±100	-55 to 155	Automotive AEC-Q200	ROHS3	1

Engineering Selection Recommendations

Direct Equivalent (Preferred for Drop-In Replacement): CR0402-FX-2742GLF (Bourns Inc.) and RC0402FR-0727K4L (YAGEO) are direct functional equivalents to the RC1005F2742CS. Both parts match all primary electrical and mechanical specifications. RC0402FR-0727K4L includes moisture-resistant construction identical to the original part. Both are ROHS3 compliant with MSL 1 rating and are in active production status.

Upgrade Option (Enhanced Power Capability): ERJ-2RKF2742X (Panasonic Electronic Components) provides identical electrical performance with increased power rating of 0.1W (1/10W) versus the original 0.063W (1/16W). This part includes automotive AEC-Q200 qualification and is suitable for applications requiring higher thermal margin. Use this part when design allows for higher power dissipation capability.

Automotive-Qualified Alternatives (AEC-Q200): AC0402FR-0727K4L (YAGEO), CRCW040227K4FKED (Vishay Dale), and RMCF0402FT27K4 (Stackpole Electronics Inc) are all automotive-qualified alternatives meeting AEC-Q200 standards. These parts maintain identical electrical specifications and package format. AC0402FR-0727K4L additionally includes moisture-resistant construction. These parts are suitable for automotive and industrial applications requiring AEC-Q200 certification.

All substitute parts listed are in active production status and ROHS3 compliant. Selection should be based on availability, supply chain requirements, and application-specific certifications needed.

Frequently Asked Questions (FAQ)

Q: Can CR0402-FX-27R4GLF be used as a substitute for RC1005F2742CS?

A: No. CR0402-FX-27R4GLF has a resistance value of 27.4 Ohms, not 27.4 kOhms. This represents a 1000-fold difference in resistance and is not a valid substitute.

Q: What is the difference between the 0.063W and 0.1W power ratings?

A: The RC1005F2742CS is rated for 0.063W (1/16W) power dissipation. The ERJ-2RKF2742X is rated for 0.1W (1/10W). The higher power rating in ERJ-2RKF2742X provides greater thermal capability and margin. A higher-rated part can replace a lower-rated part in the same application without electrical or thermal issues.

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

A: Yes. All listed substitute parts use 0402 (1005 Metric) package format with identical dimensions: 0.039" L x 0.020" W (1.00mm x 0.50mm). Height specifications are equivalent (0.016" maximum for most parts, 0.015" for AC0402FR-0727K4L), ensuring compatibility with standard PCB assembly processes.

Q: What does AEC-Q200 qualification mean?

A: AEC-Q200 is an automotive industry standard qualification for passive components. Parts bearing this certification have undergone additional reliability testing and are approved for automotive applications. AEC-Q200 qualified parts can be used in non-automotive applications without restriction.

Q: Is moisture resistance a critical parameter for substitution?

A: Moisture resistance is not a primary substitution criterion but is a beneficial feature. The original RC1005F2742CS includes moisture-resistant construction. Direct substitutes CR0402-FX-2742GLF and RC0402FR-0727K4L both maintain this feature. If moisture resistance is required for your application, select RC0402FR-0727K4L or AC0402FR-0727K4L to ensure this feature is retained.

Q: Can I use automotive-qualified parts in non-automotive applications?

A: Yes. Automotive-qualified parts (AEC-Q200) meet or exceed standard commercial specifications and can be used in any application. There is no restriction on using automotive-qualified components in non-automotive designs.

Q: What does MSL 1 (Unlimited) mean?

A: MSL (Moisture Sensitivity Level) 1 indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. All listed parts have MSL 1 rating, eliminating moisture-related handling concerns.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant, matching the original RC1005F2742CS specification. ROHS3 compliance is maintained across all alternatives.

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