MCR03EZPFX1051 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX1051 is a 1.05 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, necessitating identification of equivalent alternatives from active manufacturers that maintain identical electrical and mechanical specifications.

Substiute Parts

MCR03EZPFX1051

Rohm SemiconductorIn Stock: 880MCR03EZPFX1051 Datasheet

Current PartRFQ

CRCW06031K05FKEA

Vishay DaleIn Stock: 20575CRCW06031K05FKEA Datasheet

DirectRFQ

ERJ-3EKF1051V

Panasonic Electronic ComponentsIn Stock: 74254ERJ-3EKF1051V Datasheet

DirectRFQ

RMCF0603FT1K05

Stackpole Electronics IncIn Stock: 22547RMCF0603FT1K05 Datasheet

DirectRFQ

CR0603-FX-1051ELF

Bourns Inc.In Stock: 25152CR0603-FX-1051ELF Datasheet

SimilarRFQ

RC0603FR-071K05L

YAGEOIn Stock: 58546RC0603FR-071K05L Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

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

Electrical Parameters:

• Resistance value: 1.05 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.1W / 1/10W (exact match required)
• Temperature coefficient: ±100ppm/°C (exact match required)
• Operating temperature range: -55°C to 155°C (exact match required)

Mechanical Parameters:

• Package / Case: 0603 (1608 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Number of terminations: 2 (exact match required)

Compliance Parameters:

• RoHS Status: ROHS3 Compliant (exact match required)
• Moisture Sensitivity Level: MSL 1 (exact match required)

Substitute parts are categorized as follows:

Direct Equivalents (Automotive AEC-Q200 Rated):

• CRCW06031K05FKEA (Vishay Dale)
• ERJ-3EKF1051V (Panasonic Electronic Components)
• RMCF0603FT1K05 (Stackpole Electronics Inc)

Similar Equivalents (Moisture Resistant, Non-Automotive Rated):

• CR0603-FX-1051ELF (Bourns Inc.)
• RC0603FR-071K05L (YAGEO)

Parameter Comparison

Engineering Selection Recommendations

For Automotive Applications (AEC-Q200 Required):

Select from the direct equivalent group: CRCW06031K05FKEA, ERJ-3EKF1051V, or RMCF0603FT1K05. All three maintain full AEC-Q200 automotive qualification, identical electrical specifications, and equivalent mechanical dimensions. Selection among these three is based on availability, packaging format preference (Tape & Reel), and supply chain considerations.

For Non-Automotive Applications:

CR0603-FX-1051ELF and RC0603FR-071K05L are functionally equivalent in electrical and mechanical parameters but lack automotive AEC-Q200 certification. These parts are suitable only for applications where automotive qualification is not a requirement. Both maintain ROHS3 compliance and MSL 1 rating.

Compliance Verification:

All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage protocols. REACH status remains unaffected across all alternatives.

Frequently Asked Questions (FAQ)

Q: Can I use CR0603-FX-1051ELF or RC0603FR-071K05L in an automotive application?

A: No. These parts lack AEC-Q200 automotive qualification. For automotive applications, use only CRCW06031K05FKEA, ERJ-3EKF1051V, or RMCF0603FT1K05.

Q: Are all substitute parts pin-compatible with MCR03EZPFX1051?

A: Yes. All substitute parts use identical 0603 (1608 Metric) package with 2 terminations and equivalent footprint dimensions, ensuring direct PCB compatibility.

Q: What is the difference between "Direct Equivalent" and "Similar Equivalent" parts?

A: Direct equivalents (CRCW06031K05FKEA, ERJ-3EKF1051V, RMCF0603FT1K05) carry AEC-Q200 automotive certification matching the original part. Similar equivalents (CR0603-FX-1051ELF, RC0603FR-071K05L) meet all electrical and mechanical specifications but lack automotive qualification.

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

A: Yes. All substitute parts maintain ±100ppm/°C temperature coefficient and -55°C to 155°C operating range, identical to the original MCR03EZPFX1051.

Q: Which substitute part has the highest inventory availability?

A: RC0603FR-071K05L (YAGEO) has 58,506 pieces in stock, followed by ERJ-3EKF1051V (Panasonic) with 74,145 pieces and CRCW06031K05FKEA (Vishay Dale) with 20,518 pieces.

Q: Are there any dimensional differences between substitute parts?

A: Minor dimensional variations exist within tolerance. MCR03EZPFX1051, ERJ-3EKF1051V, CR0603-FX-1051ELF, and RC0603FR-071K05L measure 0.063" L x 0.031" W (1.60mm x 0.80mm). CRCW06031K05FKEA and RMCF0603FT1K05 measure 0.061" L x 0.031" W (1.55mm x 0.80mm) and 0.061" L x 0.031" W (1.55mm x 0.80mm) respectively. All variations remain within 0603 package specification and are PCB-compatible.

Q: What packaging formats are available for substitute parts?

A: CRCW06031K05FKEA is available in Cut Tape (CT) and Digi-Reel format. ERJ-3EKF1051V, RMCF0603FT1K05, CR0603-FX-1051ELF, and RC0603FR-071K05L are available in Tape & Reel (TR) format.