MCR03EZPFX1691 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX1691 is a 1.69 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	1.69 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 MCR03EZPFX1691 is determined by strict equivalence across the following parameters: resistance value (1.69 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 categorized as follows:

Direct Equivalents — Parts meeting all electrical and mechanical specifications with identical or compatible physical dimensions and automotive AEC-Q200 certification:

CRCW06031K69FKEA (Vishay Dale)
ERJ-3EKF1691V (Panasonic Electronic Components)
RMCF0603FT1K69 (Stackpole Electronics Inc)

Similar Equivalents — Parts meeting all electrical and mechanical specifications with identical physical dimensions but featuring moisture-resistant construction instead of automotive AEC-Q200 certification:

CR0603-FX-1691ELF (Bourns Inc.)
RC0603FR-071K69L (YAGEO)

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op. Temp Range	Size (mm)	Height Max (mm)	RoHS Status	Product Status
MCR03EZPFX1691	Rohm Semiconductor	1.69 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	1.60 x 0.80	0.55	ROHS3	Discontinued
CRCW06031K69FKEA	Vishay Dale	1.69 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	1.55 x 0.85	0.50	ROHS3	Active
ERJ-3EKF1691V	Panasonic Electronic Components	1.69 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	1.60 x 0.80	0.55	ROHS3	Active
RMCF0603FT1K69	Stackpole Electronics Inc	1.69 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	1.55 x 0.80	0.55	ROHS3	Active
CR0603-FX-1691ELF	Bourns Inc.	1.69 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	1.60 x 0.80	0.55	ROHS3	Active
RC0603FR-071K69L	YAGEO	1.69 kΩ	±1%	0.1	0603	±100ppm/°C	-55 to 155°C	1.60 x 0.80	0.55	ROHS3	Active

Engineering Selection Recommendations

All listed substitute parts are ROHS3 compliant and REACH unaffected, meeting regulatory requirements equivalent to the original MCR03EZPFX1691.

For automotive applications requiring AEC-Q200 certification, select from the direct equivalents: CRCW06031K69FKEA, ERJ-3EKF1691V, or RMCF0603FT1K69. These parts maintain full automotive qualification and are currently in active production status with substantial inventory availability.

For non-automotive applications or where moisture-resistant construction is acceptable, CR0603-FX-1691ELF and RC0603FR-071K69L provide functional equivalence with active product status and high inventory levels.

Physical dimensions across all substitutes remain within 0603 package specifications, ensuring PCB layout compatibility. Height variations (0.50mm to 0.55mm maximum seated height) fall within standard assembly tolerances for surface-mount processes.

Frequently Asked Questions (FAQ)

Q: Can I use CR0603-FX-1691ELF or RC0603FR-071K69L in automotive applications?

A: These parts meet the same electrical specifications and package requirements as the original MCR03EZPFX1691. However, they feature moisture-resistant construction rather than automotive AEC-Q200 certification. Application suitability depends on your specific automotive qualification requirements.

Q: Are all substitute parts physically compatible with the original PCB layout?

A: Yes. All substitute parts use the 0603 (1608 Metric) package with two terminations. Physical dimensions vary slightly (length 1.55mm to 1.60mm, width 0.80mm to 0.85mm, height 0.50mm to 0.55mm), but these variations remain within standard 0603 package tolerances and assembly process capabilities.

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

A: Direct equivalents (CRCW06031K69FKEA, ERJ-3EKF1691V, RMCF0603FT1K69) carry automotive AEC-Q200 certification matching the original part. Similar equivalents (CR0603-FX-1691ELF, RC0603FR-071K69L) meet all electrical and mechanical specifications but feature moisture-resistant construction without automotive certification.

Q: Which substitute has the highest inventory availability?

A: CRCW06031K69FKEA (Vishay Dale) has the highest inventory at 5,000,400 pieces. RMCF0603FT1K69 (Stackpole Electronics Inc) and RC0603FR-071K69L (YAGEO) also maintain substantial stock levels exceeding 160,000 pieces each.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

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