MCR03EZPFX3010 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX3010 is a 301 Ohms ±1% 0.1W thick film chip resistor in 0603 (1608 Metric) package manufactured by Rohm Semiconductor. This automotive-grade component meets AEC-Q200 specifications and operates across -55°C to 155°C. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active manufacturers to maintain design continuity and supply chain reliability.

Key Parameters

Parameter	Value
Resistance	301 Ohms
Tolerance	±1%
Power Rating	0.1W (1/10W)
Package	0603 (1608 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C to 155°C
Automotive Rating	AEC-Q200
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters: resistance value (301 Ohms), tolerance (±1%), power rating (0.1W), package type (0603), composition (thick film), temperature coefficient (±100ppm/°C), operating temperature range (-55°C to 155°C), and moisture sensitivity level (MSL 1). Parts meeting all these criteria are classified as direct substitutes. Parts lacking automotive AEC-Q200 certification or differing in compliance status are classified as similar alternatives suitable for non-automotive applications or where automotive qualification is not required.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	AEC-Q200	RoHS Status	Product Status
MCR03EZPFX3010	Rohm Semiconductor	301 Ω	±1%	0.1	0603	±100ppm/°C	-55°C to 155°C	Yes	ROHS3	Discontinued
CRCW0603301RFKEA	Vishay Dale	301 Ω	±1%	0.1	0603	±100ppm/°C	-55°C to 155°C	Yes	ROHS3	Active
CRCW0603301RFKEB	Vishay Dale	301 Ω	±1%	0.1	0603	±100ppm/°C	-55°C to 155°C	Yes	ROHS3	Discontinued
CRCW0603301RFKTA	Vishay Dale	301 Ω	±1%	0.1	0603	±100ppm/°C	-55°C to 155°C	Yes	RoHS Non-compliant	Active
ERJ-3EKF3010V	Panasonic Electronic Components	301 Ω	±1%	0.1	0603	±100ppm/°C	-55°C to 155°C	Yes	ROHS3	Active
RMCF0603FT301R	Stackpole Electronics Inc	301 Ω	±1%	0.1	0603	±100ppm/°C	-55°C to 155°C	Yes	ROHS3	Active
CR0603-FX-3010ELF	Bourns Inc.	301 Ω	±1%	0.1	0603	±100ppm/°C	-55°C to 155°C	No	ROHS3	Active
RC0603FR-07301RL	YAGEO	301 Ω	±1%	0.1	0603	±100ppm/°C	-55°C to 155°C	No	ROHS3	Active

Engineering Selection Recommendations

For automotive applications requiring AEC-Q200 certification and ROHS3 compliance, CRCW0603301RFKEA (Vishay Dale), ERJ-3EKF3010V (Panasonic), and RMCF0603FT301R (Stackpole Electronics) are direct functional equivalents with active product status and full inventory availability. CRCW0603301RFKTA maintains electrical equivalence but carries RoHS non-compliance and REACH-affected status, limiting suitability for new designs subject to environmental regulations. CR0603-FX-3010ELF and RC0603FR-07301RL lack AEC-Q200 automotive qualification and are suitable only for non-automotive applications where automotive certification is not a design requirement.

Frequently Asked Questions (FAQ)

Q: Can CR0603-FX-3010ELF or RC0603FR-07301RL replace MCR03EZPFX3010 in automotive applications?

A: No. These parts lack AEC-Q200 automotive qualification. They are electrically equivalent but do not meet automotive reliability and qualification standards. Use only for non-automotive designs.

Q: What is the difference between CRCW0603301RFKEA and CRCW0603301RFKEB?

A: Both are Vishay Dale CRCW series 301 Ohm 0603 resistors with identical electrical specifications. CRCW0603301RFKEA is currently active with higher inventory (145,282 pcs). CRCW0603301RFKEB is discontinued at DiGi Electronics with lower inventory (20,947 pcs). CRCW0603301RFKEA is the preferred choice for new procurement.

Q: Why is CRCW0603301RFKTA listed if it is RoHS non-compliant?

A: CRCW0603301RFKTA meets all electrical and mechanical specifications but carries RoHS non-compliance and REACH-affected status. It remains a functional equivalent for legacy designs or applications where RoHS compliance is not mandated, but is not recommended for new designs.

Q: Are dimensional variations between substitute parts significant?

A: Dimensional variations exist within tolerance. MCR03EZPFX3010 and ERJ-3EKF3010V share identical dimensions (0.063" L x 0.031" W, 0.022" max height). CRCW and RMCF series show minor variations (±0.002" length, ±0.002" width, ±0.002" height) within standard PCB assembly tolerances. Verify footprint compatibility with your specific PCB design.

Q: Which substitute offers the highest inventory availability?

A: ERJ-3EKF3010V (Panasonic) offers the highest inventory at 191,088 pcs, followed by RMCF0603FT301R (Stackpole) at 133,837 pcs and CRCW0603301RFKEA (Vishay Dale) at 145,282 pcs. All three are active products suitable for immediate procurement.

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