MCR03EZPFX6651 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX6651 is a 6.65 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	6.65 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
Number of Terminations	2
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MCR03EZPFX6651 is determined by strict equivalence across the following parameters: resistance value (6.65 kOhms), 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 (RoHS3, REACH Unaffected, EAR99).

Substitute parts are grouped into two categories:

Direct Substitutes meet all electrical and mechanical specifications including automotive AEC-Q200 rating: CRCW06036K65FKEA (Vishay Dale), ERJ-3EKF6651V (Panasonic Electronic Components), and RMCF0603FT6K65 (Stackpole Electronics Inc).

Similar Substitutes meet all core electrical and mechanical specifications but feature moisture-resistant construction instead of automotive AEC-Q200 rating: CR0603-FX-6651ELF (Bourns Inc.) and RC0603FR-076K65L (YAGEO).

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op. Temp Range	Composition	AEC-Q200	RoHS3	Product Status
MCR03EZPFX6651	Rohm Semiconductor	6.65 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Thick Film	Yes	Yes	Discontinued
CRCW06036K65FKEA	Vishay Dale	6.65 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Thick Film	Yes	Yes	Active
ERJ-3EKF6651V	Panasonic Electronic Components	6.65 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Thick Film	Yes	Yes	Active
RMCF0603FT6K65	Stackpole Electronics Inc	6.65 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Thick Film	Yes	Yes	Active
CR0603-FX-6651ELF	Bourns Inc.	6.65 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Thick Film	No	Yes	Active
RC0603FR-076K65L	YAGEO	6.65 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	Thick Film	No	Yes	Active

Engineering Selection Recommendations

For applications requiring automotive AEC-Q200 compliance, select from the direct substitutes: CRCW06036K65FKEA, ERJ-3EKF6651V, or RMCF0603FT6K65. All three are currently in active production status with substantial inventory availability (21,975 to 175,604 units in stock).

For non-automotive applications where AEC-Q200 certification is not required, CR0603-FX-6651ELF and RC0603FR-076K65L are viable alternatives. Both maintain identical electrical specifications and RoHS3 compliance while offering moisture-resistant construction.

All substitute parts maintain REACH Unaffected status and EAR99 ECCN classification consistent with the original MCR03EZPFX6651.

Frequently Asked Questions (FAQ)

Q: Can I use CR0603-FX-6651ELF or RC0603FR-076K65L in automotive applications?

A: These parts lack AEC-Q200 automotive qualification. Use only if your application does not require automotive compliance. For automotive designs, select CRCW06036K65FKEA, ERJ-3EKF6651V, or RMCF0603FT6K65.

Q: Are all substitute parts physically compatible with the original MCR03EZPFX6651 footprint?

A: All substitutes use the 0603 (1608 Metric) package. Physical dimensions vary slightly between manufacturers (length 1.55mm to 1.60mm, width 0.80mm to 0.85mm, height 0.50mm to 0.55mm), but all fit standard 0603 PCB pads.

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

A: Direct substitutes (CRCW06036K65FKEA, ERJ-3EKF6651V, RMCF0603FT6K65) include AEC-Q200 automotive rating. Similar substitutes (CR0603-FX-6651ELF, RC0603FR-076K65L) feature moisture-resistant construction but lack automotive qualification.

Q: Do all substitutes meet RoHS3 compliance?

A: Yes. All listed substitute parts are RoHS3 compliant and REACH Unaffected, matching the original MCR03EZPFX6651 environmental compliance status.

Q: Which substitute has the highest inventory availability?

A: ERJ-3EKF6651V (Panasonic) offers the highest stock level at 175,604 units in inventory.

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