MCR18ERTF1021 Equivalent & Substitute Parts

Part Overview

The MCR18ERTF1021 is a 1.02 kOhms ±1% 0.25W thick film chip resistor in 1206 (3216 Metric) package manufactured by Rohm Semiconductor. This part is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active product lines. Substitute parts maintain identical electrical specifications and mechanical compatibility while offering continued availability and support.

Key Parameters

Parameter	Value
Resistance	1.02 kOhms
Tolerance	±1%
Power Rating	0.25W (1/4W)
Composition	Thick Film
Package	1206 (3216 Metric)
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C to 155°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

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

Resistance value: 1.02 kOhms
Tolerance: ±1%
Power rating: 0.25W (1/4W)
Package: 1206 (3216 Metric)
Composition: Thick Film
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C to 155°C
RoHS compliance: ROHS3 Compliant
Moisture sensitivity: MSL 1

All identified substitute parts meet these criteria. Variations in physical dimensions (length, width, height) within the 1206 package specification and differences in product status or certifications do not affect electrical or mechanical interchangeability.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power	Package	Temp Coeff	Op. Temp Range	RoHS	MSL	Product Status
MCR18ERTF1021	Rohm Semiconductor	1.02 kΩ	±1%	0.25W	1206	±100ppm/°C	-55°C to 155°C	ROHS3	1	Discontinued
KTR18EZPF1021	Rohm Semiconductor	1.02 kΩ	±1%	0.25W	1206	±100ppm/°C	-55°C to 155°C	ROHS3	1	Active
CRCW12061K02FKEA	Vishay Dale	1.02 kΩ	±1%	0.25W	1206	±100ppm/°C	-55°C to 155°C	ROHS3	1	Active
ERJ-8ENF1021V	Panasonic Electronic Components	1.02 kΩ	±1%	0.25W	1206	±100ppm/°C	-55°C to 155°C	ROHS3	1	Not For New Designs
RC1206FR-071K02L	YAGEO	1.02 kΩ	±1%	0.25W	1206	±100ppm/°C	-55°C to 155°C	ROHS3	1	Active
RMCF1206FT1K02	Stackpole Electronics Inc	1.02 kΩ	±1%	0.25W	1206	±100ppm/°C	-55°C to 155°C	ROHS3	1	Active

Engineering Selection Recommendations

For new designs and ongoing production, KTR18EZPF1021, CRCW12061K02FKEA, RC1206FR-071K02L, and RMCF1206FT1K02 are recommended as primary substitutes. All four parts are in active production status with full RoHS3 compliance and MSL 1 rating.

KTR18EZPF1021 (Rohm Semiconductor) maintains manufacturer continuity and includes automotive AEC-Q200 qualification. CRCW12061K02FKEA (Vishay Dale) and RMCF1206FT1K02 (Stackpole Electronics Inc) also carry AEC-Q200 certification, suitable for automotive applications. RC1206FR-071K02L (YAGEO) is qualified for moisture-resistant applications.

ERJ-8ENF1021V (Panasonic Electronic Components) is electrically and mechanically equivalent but carries "Not For New Designs" status and should be used only for legacy system maintenance or repair applications.

Frequently Asked Questions (FAQ)

Q: Can MCR18ERTF1021 be directly replaced with any of these substitute parts?

A: Yes. All listed substitute parts are electrically and mechanically equivalent. They share identical resistance (1.02 kOhms), tolerance (±1%), power rating (0.25W), package (1206), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C to 155°C). Physical dimensions vary slightly within 1206 package specification but do not affect PCB layout or assembly compatibility.

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

A: AEC-Q200 certification indicates automotive-grade qualification. KTR18EZPF1021, CRCW12061K02FKEA, and RMCF1206FT1K02 carry this certification. RC1206FR-071K02L does not list AEC-Q200 but includes moisture-resistant features. For automotive applications, AEC-Q200 qualified parts are preferred.

Q: Why is ERJ-8ENF1021V marked "Not For New Designs"?

A: This designation indicates the manufacturer is transitioning the product line. While electrically and mechanically equivalent, this part should be reserved for repair and maintenance of existing systems. New designs should use active-status alternatives.

Q: Are there packaging differences between Cut Tape and Tape & Reel formats?

A: MCR18ERTF1021 is supplied in Cut Tape (CT) & Digi-Reel format. All substitute parts are supplied in Tape & Reel (TR) format. Both formats contain identical components; packaging format affects only handling, storage, and assembly line compatibility, not electrical or mechanical performance.

Q: Do all parts meet RoHS3 and MSL 1 requirements?

A: Yes. All parts listed are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level, ensuring compatibility with standard PCB assembly processes and storage conditions.

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