MCR03EZPFX1621 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX1621 is a 1.62 kOhms ±1% 0.1W thick film chip resistor in 0603 (1608 Metric) package manufactured by Rohm Semiconductor. This part is discontinued at DiGi Electronics, necessitating identification of equivalent alternatives that maintain identical electrical and mechanical specifications. Substitute parts must match the resistance value, tolerance, power rating, package dimensions, and operating temperature range to ensure direct compatibility in existing designs.

Key Parameters

Parameter	Specification
Resistance Value	1.62 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 ~ 155°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the MCR03EZPFX1621 are qualified based on the following criteria:

Electrical Parameters (Must Match Exactly):

Resistance: 1.62 kOhms
Tolerance: ±1%
Power Rating: 0.1W (1/10W)
Temperature Coefficient: ±100ppm/°C
Operating Temperature Range: -55°C ~ 155°C

Mechanical Parameters (Must Match Exactly):

Package / Case: 0603 (1608 Metric)
Number of Terminations: 2
Composition: Thick Film

Compliance & Environmental (Must Match or Exceed):

RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

All identified substitute parts meet these criteria and are therefore electrically and mechanically interchangeable with the MCR03EZPFX1621.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Operating Temp	Product Status	Features
MCR03EZPFX1621	Rohm Semiconductor	1.62 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Discontinued	Automotive AEC-Q200
TRR03EZPF1621	Rohm Semiconductor	1.62 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Obsolete	Anti-Sulfur
CRCW06031K62FKEA	Vishay Dale	1.62 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Active	Automotive AEC-Q200
ERJ-3EKF1621V	Panasonic Electronic Components	1.62 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Active	Automotive AEC-Q200
RMCF0603FT1K62	Stackpole Electronics Inc	1.62 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Active	Automotive AEC-Q200
CR0603-FX-1621ELF	Bourns Inc.	1.62 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Active	Moisture Resistant
RC0603FR-071K62L	YAGEO	1.62 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	Active	Moisture Resistant

Engineering Selection Recommendations

Primary Recommendations (Active Status with AEC-Q200 Certification):

For automotive applications requiring AEC-Q200 qualification, select from:

CRCW06031K62FKEA (Vishay Dale) — 50,957 units in stock
ERJ-3EKF1621V (Panasonic Electronic Components) — 59,385 units in stock
RMCF0603FT1K62 (Stackpole Electronics Inc) — 41,836 units in stock

These parts maintain the automotive-grade specifications of the original MCR03EZPFX1621 and are currently in active production.

Secondary Recommendations (Active Status, Moisture Resistant):

For non-automotive applications or where moisture resistance is prioritized:

CR0603-FX-1621ELF (Bourns Inc.) — 109,993 units in stock
RC0603FR-071K62L (YAGEO) — 315,644 units in stock

These parts provide enhanced moisture resistance and are widely available.

Legacy Alternatives (Obsolete/Discontinued Status):

TRR03EZPF1621 (Rohm Semiconductor) — 5,685 units in stock — Obsolete status; use only if existing inventory must be maintained for legacy designs.

Frequently Asked Questions (FAQ)

Q: Can I substitute the MCR03EZPFX1621 with any of the listed parts?

A: Yes. All listed substitute parts match the electrical specifications (1.62 kOhms ±1%, 0.1W), temperature characteristics (±100ppm/°C, -55°C ~ 155°C), mechanical package (0603), and compliance requirements (ROHS3, MSL 1) of the original part. Direct substitution is electrically and mechanically valid.

Q: What is the difference between AEC-Q200 and Moisture Resistant variants?

A: AEC-Q200 certification indicates automotive-grade qualification with specific reliability and performance standards. Moisture Resistant variants prioritize environmental protection without automotive certification. Select AEC-Q200 parts for automotive applications; select Moisture Resistant parts for general industrial or consumer applications.

Q: Are there packaging differences between substitute parts?

A: All substitute parts use the 0603 (1608 Metric) package. Physical dimensions are equivalent (0.063" L x 0.031" W, 1.60mm x 0.80mm), with minor height variations (0.020" to 0.022" seated height). These variations are within standard PCB assembly tolerances and do not affect interchangeability.

Q: Which substitute part has the best availability?

A: RC0603FR-071K62L (YAGEO) has the highest inventory at 315,644 units. For automotive applications, ERJ-3EKF1621V (Panasonic) offers 59,385 units with active AEC-Q200 status.

Q: Can I use the TRR03EZPF1621 as a substitute?

A: The TRR03EZPF1621 is electrically and mechanically equivalent but is marked as Obsolete. Use only if maintaining compatibility with existing legacy inventory. For new designs, select from Active status alternatives.

Q: Do all substitute parts have the same temperature coefficient?

A: Yes. All substitute parts specify ±100ppm/°C temperature coefficient, matching the original MCR03EZPFX1621.

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