MCR03EZPFX6803 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX6803 is a 680 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 operating temperature range of -55°C to 155°C. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active manufacturers that maintain identical electrical and mechanical specifications.

Key Parameters

Parameter	Specification
Resistance Value	680 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 to 155°C
Automotive Rating	AEC-Q200
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	MSL 1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MCR03EZPFX6803 is determined by strict equivalence across the following parameters:

Resistance value: 680 kOhms (exact match required)
Tolerance: ±1% (exact match required)
Power rating: 0.1W / 1/10W (exact match required)
Package: 0603 (1608 Metric) (exact match required)
Composition: Thick Film (exact match required)
Temperature coefficient: ±100ppm/°C (exact match required)
Operating temperature range: -55°C to 155°C (exact match required)
RoHS compliance: ROHS3 Compliant (exact match required)
Moisture sensitivity: MSL 1 (exact match required)

All substitute parts listed below meet these criteria. Variations in packaging format (Tape & Reel vs. Cut Tape), minor dimensional tolerances within the 0603 package specification, and additional features (such as high voltage or moisture resistance ratings) do not affect functional equivalence for direct circuit substitution.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power	Package	Temp Coeff	Op Temp Range	AEC-Q200	RoHS3	Product Status
MCR03EZPFX6803	Rohm Semiconductor	680 kOhms	±1%	0.1W	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Yes	Discontinued
KTR03EZPF6803	Rohm Semiconductor	680 kOhms	±1%	0.1W	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Yes	Active
CRCW0603680KFKEA	Vishay Dale	680 kOhms	±1%	0.1W	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Yes	Active
ERJ-3EKF6803V	Panasonic Electronic Components	680 kOhms	±1%	0.1W	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Yes	Active
RMCF0603FT680K	Stackpole Electronics Inc	680 kOhms	±1%	0.1W	0603	±100ppm/°C	-55°C ~ 155°C	Yes	Yes	Active
CR0603-FX-6803ELF	Bourns Inc.	680 kOhms	±1%	0.1W	0603	±100ppm/°C	-55°C ~ 155°C	No	Yes	Active
CRG0603F680K	TE Connectivity Passive Product	680 kOhms	±1%	0.1W	0603	±100ppm/°C	-55°C ~ 155°C	No	Yes	Active
RC0603FR-07680KL	YAGEO	680 kOhms	±1%	0.1W	0603	±100ppm/°C	-55°C ~ 155°C	No	Yes	Active
RC1608F684CS	Samsung Electro-Mechanics	680 kOhms	±1%	0.1W	0603	±100ppm/°C	-55°C ~ 155°C	No	Yes	Active

Engineering Selection Recommendations

For applications requiring AEC-Q200 automotive qualification, select from the following active parts: KTR03EZPF6803 (Rohm Semiconductor), CRCW0603680KFKEA (Vishay Dale), ERJ-3EKF6803V (Panasonic Electronic Components), or RMCF0603FT680K (Stackpole Electronics Inc). All four maintain full automotive compliance with identical electrical specifications to the discontinued MCR03EZPFX6803.

For non-automotive applications or where automotive qualification is not required, CR0603-FX-6803ELF (Bourns Inc.), CRG0603F680K (TE Connectivity), RC0603FR-07680KL (YAGEO), and RC1608F684CS (Samsung Electro-Mechanics) provide functionally equivalent substitution with active product status and ROHS3 compliance.

All listed parts are available in active production with established supply chains. Selection should be based on packaging preference (Tape & Reel vs. Cut Tape), inventory availability, and lead time requirements specific to your procurement timeline.

Frequently Asked Questions (FAQ)

Q: Can I substitute the MCR03EZPFX6803 with any of the listed parts?

A: Yes. All listed parts meet the core electrical and mechanical specifications: 680 kOhms ±1%, 0.1W power rating, 0603 package, ±100ppm/°C temperature coefficient, and -55°C to 155°C operating range. Direct circuit substitution is functionally equivalent.

Q: What is the difference between parts with and without AEC-Q200 rating?

A: AEC-Q200 certification indicates automotive-grade qualification. Parts with AEC-Q200 (KTR03EZPF6803, CRCW0603680KFKEA, ERJ-3EKF6803V, RMCF0603FT680K) are suitable for automotive applications. Parts without AEC-Q200 are suitable for general industrial and consumer applications. Use AEC-Q200 rated parts only if your application requires automotive compliance.

Q: Does packaging format (Tape & Reel vs. Cut Tape) affect compatibility?

A: No. Packaging format affects only handling, storage, and assembly processes. The electrical and mechanical performance of the component itself is identical regardless of packaging format. Select based on your manufacturing process requirements.

Q: Are there any dimensional differences between substitute parts?

A: All parts conform to the 0603 (1608 Metric) package standard. Minor dimensional variations within specification tolerances exist (for example, length 0.061" to 0.063", height 0.020" to 0.022"), but these fall within standard PCB design tolerances and do not affect circuit performance or board layout compatibility.

Q: Which substitute part has the highest inventory availability?

A: RMCF0603FT680K (Stackpole Electronics Inc) shows 315,100 pieces in stock, followed by RC0603FR-07680KL (YAGEO) with 269,891 pieces. Both are suitable for immediate procurement with minimal lead time.

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