MCR03EZPFX1200 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX1200 is a 120 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, necessitating identification of equivalent alternatives that maintain identical electrical and mechanical specifications for direct board-level substitution.

Key Parameters

Parameter	Value
Resistance	120 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	MSL 1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters: resistance value (120 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 compliance certifications (AEC-Q200, ROHS3, MSL 1).

Parts are categorized as follows:

Upgrade Substitute: KTR03EZPF1200 (Rohm Semiconductor) — identical specifications with active product status and high voltage thick film composition.

Direct Substitutes: CRCW0603120RFKEA, CRCW0603120RFKEB (Vishay Dale), ERJ-3EKF1200V (Panasonic), RMCF0603FT120R (Stackpole) — meet all electrical and mechanical parameters with AEC-Q200 certification.

Similar Substitutes: CR0603-FX-1200ELF (Bourns), CRG0603F120R (TE Connectivity), RC0603FR-07120RL (YAGEO) — meet all core electrical specifications; CR0603-FX-1200ELF and RC0603FR-07120RL feature moisture-resistant composition; CRG0603F120R lacks specified automotive rating but maintains all electrical parameters.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	AEC-Q200	Product Status	Inventory
MCR03EZPFX1200	Rohm Semiconductor	120 Ω	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Yes	Discontinued	5300
KTR03EZPF1200	Rohm Semiconductor	120 Ω	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Yes	Active	43722
CRCW0603120RFKEA	Vishay Dale	120 Ω	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Yes	Active	5100
CRCW0603120RFKEB	Vishay Dale	120 Ω	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Yes	Discontinued	35390
ERJ-3EKF1200V	Panasonic Electronic Components	120 Ω	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Yes	Active	87117
RMCF0603FT120R	Stackpole Electronics Inc	120 Ω	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Yes	Active	722877
CR0603-FX-1200ELF	Bourns Inc.	120 Ω	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	No	Active	157225
CRG0603F120R	TE Connectivity Passive Product	120 Ω	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	No	Active	13824
RC0603FR-07120RL	YAGEO	120 Ω	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	No	Active	8166

Engineering Selection Recommendations

For applications requiring strict automotive AEC-Q200 compliance, select from the direct substitute group: KTR03EZPF1200 (Rohm), CRCW0603120RFKEA (Vishay Dale), ERJ-3EKF1200V (Panasonic), or RMCF0603FT120R (Stackpole). All maintain identical electrical specifications and active product status.

KTR03EZPF1200 provides the most direct replacement as a Rohm Semiconductor product with identical series lineage and active availability (43,722 units in stock).

RMCF0603FT120R offers the highest inventory availability (722,877 units) among AEC-Q200 qualified alternatives, supporting high-volume production requirements.

For non-automotive applications where AEC-Q200 certification is not mandatory, CR0603-FX-1200ELF, CRG0603F120R, and RC0603FR-07120RL provide equivalent electrical performance with active status. CR0603-FX-1200ELF and RC0603FR-07120RL include moisture-resistant composition as an additional feature.

Frequently Asked Questions (FAQ)

Q: Can MCR03EZPFX1200 be directly replaced with KTR03EZPF1200?

A: Yes. Both are Rohm Semiconductor products with identical resistance (120 Ohms), tolerance (±1%), power rating (0.1W), package (0603), temperature coefficient (±100ppm/°C), operating range (-55°C to 155°C), and AEC-Q200 certification. KTR03EZPF1200 is currently active with higher inventory availability.

Q: What is the difference between direct and similar substitutes?

A: Direct substitutes (CRCW0603120RFKEA, ERJ-3EKF1200V, RMCF0603FT120R) carry AEC-Q200 automotive qualification matching the original part. Similar substitutes (CR0603-FX-1200ELF, CRG0603F120R, RC0603FR-07120RL) meet all electrical and mechanical specifications but lack AEC-Q200 certification. Selection depends on application requirements.

Q: Are there dimensional differences between substitute parts?

A: Minor dimensional variations exist within tolerance. MCR03EZPFX1200 and ERJ-3EKF1200V measure 0.063" L × 0.031" W (1.60mm × 0.80mm). CRCW0603120RFKEA measures 0.061" L × 0.033" W (1.55mm × 0.85mm). CRCW0603120RFKEB measures 0.063" L × 0.033" W (1.60mm × 0.85mm). All fit 0603 package footprints. Height variations (0.020" to 0.022" seated maximum) remain within standard PCB assembly tolerances.

Q: Which substitute offers the best availability?

A: RMCF0603FT120R (Stackpole) provides maximum inventory at 722,877 units with active product status and AEC-Q200 certification, suitable for high-volume production.

Q: Can I use CR0603-FX-1200ELF in automotive applications?

A: CR0603-FX-1200ELF meets all electrical specifications (120 Ohms ±1%, 0.1W, 0603 package, ±100ppm/°C, -55°C to 155°C) but lacks AEC-Q200 certification. Use only if automotive qualification is not a design requirement.

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