MCR03EZPFX1911 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX1911 is a 1.91 kOhms ±1% 0.1W thick film chip resistor in 0603 (1608 Metric) package manufactured by Rohm Semiconductor. This component is rated for automotive applications under AEC-Q200 standard with an operating temperature range of -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	1.91 kOhms
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
Automotive Rating	AEC-Q200
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MCR03EZPFX1911 is determined by strict equivalence across the following parameters:

Resistance value: 1.91 kOhms
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
RoHS compliance: ROHS3 Compliant
Moisture sensitivity level: 1 (Unlimited)

All substitute parts listed meet these core electrical and mechanical specifications. Parts are categorized as Direct equivalents (identical AEC-Q200 automotive rating) or Similar alternatives (moisture-resistant but without explicit AEC-Q200 designation).

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power	Package	Temp Coeff	Operating Temp	AEC-Q200	Product Status
MCR03EZPFX1911	Rohm Semiconductor	1.91 kΩ	±1%	0.1W	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Discontinued
CRCW06031K91FKEA	Vishay Dale	1.91 kΩ	±1%	0.1W	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Active
ERJ-3EKF1911V	Panasonic Electronic Components	1.91 kΩ	±1%	0.1W	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Active
RMCF0603FT1K91	Stackpole Electronics Inc	1.91 kΩ	±1%	0.1W	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Active
CR0603-FX-1911ELF	Bourns Inc.	1.91 kΩ	±1%	0.1W	0603	±100ppm/°C	-55°C ~ 155°C	No	Active
RC0603FR-071K91L	YAGEO	1.91 kΩ	±1%	0.1W	0603	±100ppm/°C	-55°C ~ 155°C	No	Active

Engineering Selection Recommendations

For applications requiring AEC-Q200 automotive qualification, select from the direct equivalents: CRCW06031K91FKEA (Vishay Dale), ERJ-3EKF1911V (Panasonic Electronic Components), or RMCF0603FT1K91 (Stackpole Electronics Inc). All three maintain active product status with full inventory availability and identical electrical specifications to the original MCR03EZPFX1911.

For non-automotive applications or where moisture-resistant thick film composition is acceptable without explicit AEC-Q200 certification, CR0603-FX-1911ELF (Bourns Inc.) and RC0603FR-071K91L (YAGEO) are functionally equivalent alternatives with active product status and substantial inventory levels.

All substitute parts are ROHS3 compliant with MSL 1 rating, matching the original part's environmental and regulatory compliance profile.

Frequently Asked Questions (FAQ)

Q: Can I use CR0603-FX-1911ELF or RC0603FR-071K91L in place of MCR03EZPFX1911 in automotive applications?

A: CR0603-FX-1911ELF and RC0603FR-071K91L are electrically and mechanically equivalent but lack explicit AEC-Q200 automotive certification. Use only if your application does not mandate AEC-Q200 compliance. For automotive designs requiring AEC-Q200 qualification, select CRCW06031K91FKEA, ERJ-3EKF1911V, or RMCF0603FT1K91.

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

A: Packaging availability varies by manufacturer. CRCW06031K91FKEA is supplied in Cut Tape (CT) & Digi-Reel format. ERJ-3EKF1911V is available in Cut Tape (CT) & Digi-Reel format. RMCF0603FT1K91, CR0603-FX-1911ELF, and RC0603FR-071K91L are supplied in Tape & Reel (TR) format. Confirm packaging requirements with your procurement process.

Q: Do all substitute parts meet the same temperature coefficient specification?

A: Yes. All listed substitute parts maintain ±100ppm/°C temperature coefficient and -55°C to 155°C operating temperature range, matching the original MCR03EZPFX1911 specification.

Q: What is the physical dimension difference between substitute parts?

A: MCR03EZPFX1911, ERJ-3EKF1911V, CR0603-FX-1911ELF, and RC0603FR-071K91L share identical dimensions: 0.063" L x 0.031" W (1.60mm x 0.80mm) with 0.022" (0.55mm) maximum seated height. CRCW06031K91FKEA and RMCF0603FT1K91 have slightly different dimensions: 0.061" L x 0.033" W (1.55mm x 0.85mm) and 0.061" L x 0.031" W (1.55mm x 0.80mm) respectively, with 0.020" (0.50mm) and 0.022" (0.55mm) maximum seated heights. These minor variations remain within 0603 package tolerance and do not affect PCB layout compatibility.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, matching the original part's environmental compliance profile.

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