MCR03EZPFX4993 Equivalent & Substitute Parts

Part Overview

The MCR03EZPFX4993 is a 499 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 that maintain identical electrical and mechanical specifications for seamless circuit board replacement.

Substiute Parts

MCR03EZPFX4993

Rohm SemiconductorIn Stock: 826MCR03EZPFX4993 Datasheet

Current PartRFQ

CRCW0603499KFKEA

Vishay DaleIn Stock: 137181CRCW0603499KFKEA Datasheet

DirectRFQ

CRCW0603499KFKEB

Vishay DaleIn Stock: 20863CRCW0603499KFKEB Datasheet

DirectRFQ

CRCW0603499KFKTA

Vishay DaleIn Stock: 26478CRCW0603499KFKTA Datasheet

DirectRFQ

ERJ-3EKF4993V

Panasonic Electronic ComponentsIn Stock: 80470ERJ-3EKF4993V Datasheet

DirectRFQ

RMCF0603FT499K

Stackpole Electronics IncIn Stock: 439157RMCF0603FT499K Datasheet

DirectRFQ

CR0603-FX-4993ELF

Bourns Inc.In Stock: 172359CR0603-FX-4993ELF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts are classified based on strict electrical and mechanical parameter matching. All listed substitutes maintain identical resistance value (499 kOhms), tolerance (±1%), power rating (0.1W), package format (0603), composition (thick film), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C ~ 155°C).

Direct Substitutes share all critical parameters including AEC-Q200 automotive rating and ROHS3 compliance status. These parts are interchangeable without circuit redesign or performance degradation.

Similar Substitute (CR0603-FX-4993ELF) matches all electrical specifications and package dimensions but features moisture-resistant construction instead of automotive AEC-Q200 rating. This part maintains full electrical and thermal compatibility while offering alternative environmental protection characteristics.

Substitution eligibility is determined by:

• Identical resistance value and tolerance
• Matching power rating and package format
• Equivalent temperature coefficient and operating range
• Compatible RoHS and compliance certifications

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Recommended for Automotive Applications):

CRCW0603499KFKEA, ERJ-3EKF4993V, and RMCF0603FT499K are the preferred alternatives. All three maintain active product status, ROHS3 compliance, AEC-Q200 automotive certification, and full electrical parameter equivalence to the original MCR03EZPFX4993. These parts provide direct replacement capability with established supply chain availability.

Secondary Substitute (Compliance Consideration):

CRCW0603499KFKTA is electrically equivalent but carries RoHS non-compliant status and REACH-affected designation. Selection of this part requires verification against project compliance requirements and regulatory constraints.

Alternative Substitute (Non-Automotive Applications):

CR0603-FX-4993ELF from Bourns maintains all electrical specifications and ROHS3 compliance but lacks AEC-Q200 automotive rating. This part is suitable for non-automotive applications requiring moisture-resistant thick film construction.

Discontinued Parts:

CRCW0603499KFKEB shares full electrical and compliance equivalence but carries discontinued status. Availability may be limited to existing inventory channels.

Frequently Asked Questions (FAQ)

Q: Can I substitute MCR03EZPFX4993 with any of the listed alternatives without circuit modification?

A: Yes. CRCW0603499KFKEA, CRCW0603499KFKEB, ERJ-3EKF4993V, and RMCF0603FT499K are direct electrical and mechanical equivalents. CR0603-FX-4993ELF is electrically equivalent but lacks automotive AEC-Q200 rating. CRCW0603499KFKTA is electrically equivalent but is RoHS non-compliant.

Q: What is the significance of AEC-Q200 rating for this application?

A: AEC-Q200 certification indicates the component meets automotive industry reliability and performance standards. For automotive circuit applications, substitutes must maintain this rating. CR0603-FX-4993ELF does not carry AEC-Q200 certification and is unsuitable for automotive designs requiring this qualification.

Q: Are there packaging differences between substitutes?

A: Yes. RMCF0603FT499K is supplied in Cut Tape & Digi-Reel format. CRCW0603499KFKEA, CRCW0603499KFKEB, ERJ-3EKF4993V, and CR0603-FX-4993ELF are supplied in Tape & Reel format. Verify packaging compatibility with assembly equipment and procurement processes.

Q: Which substitute offers the best long-term availability?

A: CRCW0603499KFKEA, ERJ-3EKF4993V, and RMCF0603FT499K all maintain active product status with substantial inventory levels (137,147, 80,439, and 439,141 units respectively), indicating strong supply chain continuity.

Q: Is CRCW0603499KFKTA suitable for my automotive application?

A: CRCW0603499KFKTA is electrically equivalent but is RoHS non-compliant and REACH-affected. Use only if your application permits non-compliant components and regulatory requirements do not mandate RoHS3 compliance.

Q: What are the dimensional tolerances for substitute parts?

A: All substitutes conform to 0603 (1608 Metric) package specification. Minor dimensional variations exist within supplier tolerances (length 1.55–1.60mm, width 0.80–0.85mm, height 0.50–0.55mm). These variations are within standard PCB design tolerances and do not affect assembly or performance.