MCR03EZPFX3000 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX3000 is a 300 Ohms ±1% 0.1W chip resistor in 0603 (1608 Metric) package manufactured by Rohm Semiconductor. This thick film resistor meets automotive AEC-Q200 qualification standards and operates across -55°C to 155°C. The part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications.

Key Parameters

Parameter	Value
Resistance	300 Ohms
Tolerance	±1%
Power Rating	0.1W (1/10W)
Package / Case	0603 (1608 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 for the MCR03EZPFX3000 is determined by strict equivalence across the following parameters:

Resistance value: 300 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 ~ 155°C
RoHS3 compliance
MSL rating: 1 (Unlimited)

Substitute parts are categorized as follows:

Upgrade Substitutes: Parts with identical electrical and mechanical specifications but enhanced features (such as high voltage capability) and active product status.

Direct Substitutes: Parts meeting all core electrical and mechanical parameters with active product status and standard packaging options.

Similar Substitutes: Parts meeting all core electrical and mechanical parameters but with feature variations (such as moisture-resistant composition instead of automotive AEC-Q200 rating) and active product status.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Temp Range	Features	Product Status	RoHS3	MSL
MCR03EZPFX3000	Rohm Semiconductor	300 Ω	±1%	0.1	0603	±100ppm/°C	-55~155°C	Automotive AEC-Q200	Discontinued	Yes	1
KTR03EZPF3000	Rohm Semiconductor	300 Ω	±1%	0.1	0603	±100ppm/°C	-55~155°C	Automotive AEC-Q200, High Voltage	Active	Yes	1
CRCW0603300RFKEA	Vishay Dale	300 Ω	±1%	0.1	0603	±100ppm/°C	-55~155°C	Automotive AEC-Q200	Active	Yes	1
ERJ-3EKF3000V	Panasonic Electronic Components	300 Ω	±1%	0.1	0603	±100ppm/°C	-55~155°C	Automotive AEC-Q200	Active	Yes	1
RMCF0603FT300R	Stackpole Electronics Inc	300 Ω	±1%	0.1	0603	±100ppm/°C	-55~155°C	Automotive AEC-Q200	Active	Yes	1
CR0603-FX-3000ELF	Bourns Inc.	300 Ω	±1%	0.1	0603	±100ppm/°C	-55~155°C	Moisture Resistant	Active	Yes	1
RC0603FR-07300RL	YAGEO	300 Ω	±1%	0.1	0603	±100ppm/°C	-55~155°C	Moisture Resistant	Active	Yes	1

Engineering Selection Recommendations

Primary Recommendation: KTR03EZPF3000 (Rohm Semiconductor) serves as the direct upgrade substitute. It maintains identical electrical specifications and automotive AEC-Q200 compliance while adding high voltage capability. Active product status ensures long-term availability.

Secondary Recommendations: CRCW0603300RFKEA (Vishay Dale), ERJ-3EKF3000V (Panasonic), and RMCF0603FT300R (Stackpole) are direct functional equivalents with automotive AEC-Q200 certification and active product status. Selection among these three depends on packaging preference (Cut Tape & Digi-Reel vs. Tape & Reel) and supplier availability.

Alternative Options: CR0603-FX-3000ELF (Bourns) and RC0603FR-07300RL (YAGEO) meet all core electrical and mechanical specifications with active status. These parts feature moisture-resistant composition rather than automotive AEC-Q200 rating and are suitable for applications where automotive qualification is not required.

All substitute parts maintain ROHS3 compliance, MSL rating of 1, and identical operating temperature ranges, ensuring direct compatibility in existing designs.

Frequently Asked Questions (FAQ)

Q: Can MCR03EZPFX3000 be replaced with KTR03EZPF3000?

A: Yes. KTR03EZPF3000 is a direct upgrade substitute with identical resistance (300 Ω), tolerance (±1%), power rating (0.1W), package (0603), and temperature specifications. It adds high voltage capability and maintains active product status.

Q: What is the difference between automotive AEC-Q200 rated parts and moisture-resistant parts?

A: Automotive AEC-Q200 rated parts (KTR03EZPF3000, CRCW0603300RFKEA, ERJ-3EKF3000V, RMCF0603FT300R) meet automotive qualification standards. Moisture-resistant parts (CR0603-FX-3000ELF, RC0603FR-07300RL) emphasize environmental protection without automotive certification. Selection depends on application requirements.

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

A: No. Packaging varies: KTR03EZPF3000 and RMCF0603FT300R are supplied in Tape & Reel (TR). CRCW0603300RFKEA and ERJ-3EKF3000V are supplied in Cut Tape (CT) & Digi-Reel. CR0603-FX-3000ELF is supplied in Tape & Reel (TR). RC0603FR-07300RL is supplied in Cut Tape (CT) & Digi-Reel. Verify packaging compatibility with your procurement process.

Q: Do all substitutes meet RoHS3 compliance?

A: Yes. All listed substitute parts are ROHS3 compliant with MSL rating of 1 (Unlimited), matching the original MCR03EZPFX3000 specifications.

Q: Which substitute offers the highest inventory availability?

A: CRCW0603300RFKEA (Vishay Dale) has the highest inventory at 108,184 pieces. ERJ-3EKF3000V (Panasonic) has 231,180 pieces available. RMCF0603FT300R (Stackpole) has 168,245 pieces available.

Q: Can I use CR0603-FX-3000ELF or RC0603FR-07300RL in automotive applications?

A: These parts meet all core electrical and mechanical specifications but lack automotive AEC-Q200 certification. Use only if your application does not require automotive qualification. For automotive designs, select from KTR03EZPF3000, CRCW0603300RFKEA, ERJ-3EKF3000V, or RMCF0603FT300R.

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