MCR10ERTF3321 Equivalent & Substitute Parts

Part Overview

The MCR10ERTF3321 is a 3.32 kOhms ±1% 0.125W thick film chip resistor in 0805 (2012 Metric) package manufactured by Rohm Semiconductor. This part is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active manufacturers. All substitute parts maintain identical electrical specifications and mechanical compatibility, enabling direct replacement in existing designs.

Key Parameters

Parameter	Value
Resistance	3.32 kOhms
Tolerance	±1%
Power Rating	0.125W (1/8W)
Package / Case	0805 (2012 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C ~ 155°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across all electrical and mechanical parameters. The following criteria must be met for direct replacement:

Resistance value: 3.32 kOhms
Tolerance: ±1%
Power rating: 0.125W (1/8W)
Package: 0805 (2012 Metric)
Composition: Thick Film
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C ~ 155°C
RoHS3 compliance
MSL rating: 1 (Unlimited)

All seven substitute parts meet these criteria. Additional features such as automotive AEC-Q200 certification or moisture resistance represent enhancements that do not preclude substitution but may provide additional design margin in specific applications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	Features	Status
MCR10ERTF3321	Rohm Semiconductor	3.32 kΩ	±1%	0.125	0805	±100ppm/°C	-55°C ~ 155°C	—	Discontinued
KTR10EZPF3321	Rohm Semiconductor	3.32 kΩ	±1%	0.125	0805	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200, High Voltage	Active
CR0805-FX-3321ELF	Bourns Inc.	3.32 kΩ	±1%	0.125	0805	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	Active
CRCW08053K32FKEA	Vishay Dale	3.32 kΩ	±1%	0.125	0805	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	Active
CRCW08053K32FKEAC	Vishay Dale	3.32 kΩ	±1%	0.125	0805	±100ppm/°C	-55°C ~ 155°C	—	Active
ERJ-6ENF3321V	Panasonic Electronic Components	3.32 kΩ	±1%	0.125	0805	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	Active
RC0805FR-073K32L	YAGEO	3.32 kΩ	±1%	0.125	0805	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	Active
RMCF0805FG3K32	Stackpole Electronics Inc	3.32 kΩ	±1%	0.125	0805	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	Active
RMCF0805FT3K32	Stackpole Electronics Inc	3.32 kΩ	±1%	0.125	0805	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	Active

Engineering Selection Recommendations

All substitute parts are ROHS3 compliant and carry MSL rating 1 (Unlimited), matching the original MCR10ERTF3321 specification. Selection among active alternatives should prioritize product availability and supply chain continuity.

For applications requiring automotive qualification, KTR10EZPF3321 (Rohm), CRCW08053K32FKEA (Vishay Dale), ERJ-6ENF3321V (Panasonic), RMCF0805FG3K32, and RMCF0805FT3K32 (Stackpole) carry AEC-Q200 certification. CR0805-FX-3321ELF (Bourns) and RC0805FR-073K32L (YAGEO) provide moisture-resistant thick film construction without automotive qualification.

CRCW08053K32FKEAC (Vishay Dale) offers the highest inventory availability (157,798 pcs) with standard thick film construction and no additional certifications, suitable for general-purpose applications.

Frequently Asked Questions (FAQ)

Q: Can MCR10ERTF3321 be directly replaced with any of these substitute parts?

A: Yes. All seven substitute parts are electrically and mechanically equivalent, meeting identical specifications for resistance, tolerance, power rating, package dimensions, temperature coefficient, and operating temperature range. Direct PCB-level substitution is permissible without circuit redesign.

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

A: AEC-Q200 certification indicates the part meets automotive industry reliability and qualification standards. Parts with this certification (KTR10EZPF3321, CRCW08053K32FKEA, ERJ-6ENF3321V, RMCF0805FG3K32, RMCF0805FT3K32) are suitable for automotive applications. Parts without this certification (CRCW08053K32FKEAC, CR0805-FX-3321ELF, RC0805FR-073K32L) are suitable for general industrial and consumer applications.

Q: What does "Moisture Resistant" mean for CR0805-FX-3321ELF and RC0805FR-073K32L?

A: Moisture-resistant thick film construction provides enhanced protection against moisture ingress and environmental degradation. This feature does not alter electrical performance but may extend operational life in humid or corrosive environments.

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

A: All substitute parts are supplied in 0805 (2012 Metric) package. Packaging options vary: most are supplied in Tape & Reel (TR) format; RC0805FR-073K32L is supplied in Cut Tape (CT) & Digi-Reel format. Verify packaging compatibility with assembly equipment before procurement.

Q: Does MSL rating 1 (Unlimited) apply to all parts?

A: Yes. All parts, including the original MCR10ERTF3321 and all seven substitutes, carry MSL rating 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

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