MCR03ERTF1021 Equivalent & Substitute Parts

Part Overview

The MCR03ERTF1021 is a 1.02 kOhms ±1% 0.1W thick film chip resistor in 0603 (1608 Metric) package manufactured by Rohm Semiconductor. This component is discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing production and maintenance applications. The part maintains full RoHS3 compliance and operates across -55°C to 155°C temperature range with ±100ppm/°C temperature coefficient.

Substiute Parts

MCR03ERTF1021

Rohm SemiconductorIn Stock: 1075MCR03ERTF1021 Datasheet

Current PartRFQ

CR0603-FX-1021ELF

Bourns Inc.In Stock: 15630CR0603-FX-1021ELF Datasheet

DirectRFQ

CRCW06031K02FKEA

Vishay DaleIn Stock: 15984CRCW06031K02FKEA Datasheet

DirectRFQ

RC0603FR-071K02L

YAGEOIn Stock: 372769RC0603FR-071K02L Datasheet

DirectRFQ

RMCF0603FG1K02

Stackpole Electronics IncIn Stock: 10984RMCF0603FG1K02 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MCR03ERTF1021 is determined by strict equivalence across the following parameters:

• Resistance value: 1.02 kOhms
• Tolerance: ±1%
• Power rating: 0.1W (1/10W)
• Package: 0603 (1608 Metric)
• Composition: Thick Film
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C ~ 155°C
• RoHS3 compliance
• MSL rating: 1 (Unlimited)

All listed substitute parts meet these core electrical and mechanical requirements. Additional features such as moisture resistance or automotive AEC-Q200 qualification represent enhanced capabilities that do not affect basic substitutability.

Parameter Comparison

Engineering Selection Recommendations

All four substitute parts are electrically and mechanically equivalent to the MCR03ERTF1021 and maintain full RoHS3 compliance. Selection among these alternatives depends on application-specific requirements and supply chain considerations:

CR0603-FX-1021ELF (Bourns Inc.) features moisture-resistant construction and is available in Tape & Reel packaging with 15,551 pieces in stock.

CRCW06031K02FKEA (Vishay Dale) carries AEC-Q200 automotive qualification and is suitable for automotive applications requiring enhanced reliability standards. Available in Cut Tape and Digi-Reel packaging with 15,900 pieces in stock.

RC0603FR-071K02L (YAGEO) offers moisture-resistant construction with the highest inventory availability at 372,712 pieces in stock, available in Tape & Reel packaging.

RMCF0603FG1K02 (Stackpole Electronics Inc.) includes AEC-Q200 automotive qualification and is available in Tape & Reel packaging with 10,947 pieces in stock.

Frequently Asked Questions (FAQ)

Q: Can these substitute parts be used interchangeably with the MCR03ERTF1021?

A: Yes. All listed substitute parts meet identical electrical specifications (1.02 kOhms ±1%, 0.1W, ±100ppm/°C) and mechanical requirements (0603 package, 2 terminations). They are direct functional equivalents.

Q: What is the difference between moisture-resistant and standard thick film versions?

A: Moisture-resistant versions (CR0603-FX-1021ELF and RC0603FR-071K02L) provide enhanced protection against humidity exposure. Both standard and moisture-resistant versions maintain MSL rating 1 (Unlimited), indicating no moisture sensitivity limitations for storage or handling.

Q: Which substitute should I select for automotive applications?

A: CRCW06031K02FKEA (Vishay Dale) and RMCF0603FG1K02 (Stackpole Electronics Inc.) both carry AEC-Q200 automotive qualification. Select based on packaging preference and supply availability.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant and REACH unaffected, matching the compliance status of the original MCR03ERTF1021.

Q: What packaging options are available?

A: CR0603-FX-1021ELF, RC0603FR-071K02L, and RMCF0603FG1K02 are available in Tape & Reel (TR) packaging. CRCW06031K02FKEA is available in Cut Tape (CT) and Digi-Reel packaging options.

Q: Do dimensional variations between substitutes affect PCB layout?

A: Dimensional variations are minimal. All parts conform to 0603 (1608 Metric) package specifications with maximum seated heights between 0.020" (0.50mm) and 0.022" (0.55mm). PCB footprints designed for 0603 package accommodate all listed substitutes.