RC1005F301CS Equivalent & Substitute Parts Reference

Part Overview

The RC1005F301CS is a 300 Ohm ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0402 (1005 Metric) package format. This component is rated at 0.063W (1/16W) power dissipation with moisture-resistant construction and operates across the temperature range of -55°C to 155°C. The part maintains Active product status and is ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications requiring this specific resistance value and electrical performance.

Key Parameters

Parameter	Value
Resistance	300 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
Moisture Sensitivity Level	1 (Unlimited)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the RC1005F301CS are classified based on strict electrical and mechanical parameter matching. All identified substitutes maintain the following core parameters: 300 Ohm resistance value, ±1% tolerance, 0402 (1005 Metric) package format, thick film composition, ±100ppm/°C temperature coefficient, and -55°C to 155°C operating temperature range. These parameters define the functional equivalence class for direct substitution.

Direct Equivalents share identical electrical specifications and packaging with the main part:

CR0402-FX-3000GLF (Bourns Inc.)
CRG0402F300R (TE Connectivity Passive Product)
RC0402FR-07300RL (YAGEO)

Upgrade Equivalent provides enhanced power rating while maintaining all other core parameters:

ERJ-2RKF3000X (Panasonic Electronic Components) – 0.1W (1/10W) power rating with AEC-Q200 automotive qualification

Similar Equivalents include additional automotive AEC-Q200 qualification or enhanced moisture resistance features:

AC0402FR-07300RL (YAGEO)
CRCW0402300RFKED (Vishay Dale)
RMCF0402FT300R (Stackpole Electronics Inc)

All substitute parts are Active status products with ROHS3 compliance and MSL 1 rating.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (Watts)	Package	Temp Coeff	Operating Temp	Features	RoHS Status	MSL
RC1005F301CS	Samsung Electro-Mechanics	300 Ω	±1%	0.063W	0402	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	ROHS3	1
CR0402-FX-3000GLF	Bourns Inc.	300 Ω	±1%	0.063W	0402	±100ppm/°C	-55°C ~ 155°C	—	ROHS3	1
CRG0402F300R	TE Connectivity Passive Product	300 Ω	±1%	0.063W	0402	±100ppm/°C	-55°C ~ 155°C	—	ROHS3	1
RC0402FR-07300RL	YAGEO	300 Ω	±1%	0.063W	0402	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	ROHS3	1
ERJ-2RKF3000X	Panasonic Electronic Components	300 Ω	±1%	0.1W	0402	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	ROHS3	1
AC0402FR-07300RL	YAGEO	300 Ω	±1%	0.063W	0402	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200, Moisture Resistant	ROHS3	1
CRCW0402300RFKED	Vishay Dale	300 Ω	±1%	0.063W	0402	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	ROHS3	1
RMCF0402FT300R	Stackpole Electronics Inc	300 Ω	±1%	0.063W	0402	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	ROHS3	1

Engineering Selection Recommendations

Direct Substitution (Identical Specifications)

CR0402-FX-3000GLF, CRG0402F300R, and RC0402FR-07300RL are electrically and mechanically equivalent to RC1005F301CS. All three maintain identical resistance, tolerance, power rating, package dimensions, and temperature performance. Selection among these direct equivalents is based on procurement availability, lead time, and packaging format preference (Tape & Reel versus Cut Tape & Digi-Reel).

Upgrade Path (Enhanced Power Rating)

ERJ-2RKF3000X provides a higher power rating of 0.1W (1/10W) compared to the 0.063W specification of the main part. This upgrade is suitable for applications where thermal margin improvement is beneficial. The part includes AEC-Q200 automotive qualification and maintains all other electrical parameters. This substitution is valid only when the application circuit can accommodate the higher power rating without thermal or layout constraints.

Automotive-Qualified Alternatives (AEC-Q200)

AC0402FR-07300RL, CRCW0402300RFKED, and RMCF0402FT300R incorporate AEC-Q200 automotive qualification in addition to standard specifications. These parts are appropriate for applications requiring automotive-grade reliability and qualification documentation. All three maintain the 0.063W power rating and are ROHS3 compliant with MSL 1 rating.

All substitute parts maintain Active product status and full ROHS3 compliance, ensuring regulatory and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can RC0402FR-07300RL replace RC1005F301CS directly in production?

A: Yes. RC0402FR-07300RL is a direct electrical and mechanical equivalent. Both parts share identical 300 Ohm resistance, ±1% tolerance, 0.063W power rating, 0402 package format, and -55°C to 155°C operating range. The primary difference is packaging format (Cut Tape & Digi-Reel versus Tape & Reel), which does not affect circuit performance.

Q: What is the difference between the main part and ERJ-2RKF3000X?

A: ERJ-2RKF3000X provides a higher power rating of 0.1W (1/10W) versus the 0.063W rating of RC1005F301CS. All other electrical parameters remain identical. This upgrade is suitable for applications requiring additional thermal headroom. The part also includes AEC-Q200 automotive qualification.

Q: Are the automotive-qualified parts (AC0402FR-07300RL, CRCW0402300RFKED, RMCF0402FT300R) suitable for non-automotive applications?

A: Yes. Automotive-qualified parts meet or exceed standard industrial specifications. AEC-Q200 qualification indicates enhanced reliability testing and quality assurance. These parts are fully compatible with non-automotive applications and provide additional qualification documentation if required.

Q: Does package format affect electrical performance?

A: No. Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel packaging formats do not affect electrical performance or circuit functionality. Selection is based on assembly equipment compatibility and procurement workflow requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All identified substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the environmental and regulatory status of RC1005F301CS.

Q: Can I use a higher power-rated resistor in place of the 0.063W part?

A: Yes, provided the application circuit design permits. ERJ-2RKF3000X at 0.1W power rating is a valid upgrade. Higher power ratings provide thermal margin but do not degrade circuit performance in applications designed for lower power dissipation.

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