MCR18ERTF3003 Equivalent & Substitute Parts

Part Overview

The MCR18ERTF3003 is a 300 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 equivalent and substitute components for ongoing design support and production requirements. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts may offer enhanced features such as higher power ratings, automotive qualification, or improved environmental performance.

Substiute Parts

MCR18ERTF3003

Rohm SemiconductorIn Stock: 1098MCR18ERTF3003 Datasheet

Current PartRFQ

KTR18EZPF3003

Rohm SemiconductorIn Stock: 25066KTR18EZPF3003 Datasheet

DirectRFQ

ESR18EZPF3003

Rohm SemiconductorIn Stock: 13977ESR18EZPF3003 Datasheet

UpgradeRFQ

CR1206-FX-3003ELF

Bourns Inc.In Stock: 14581CR1206-FX-3003ELF Datasheet

DirectRFQ

CRCW1206300KFKEA

Vishay DaleIn Stock: 19631CRCW1206300KFKEA Datasheet

DirectRFQ

ERJ-8ENF3003V

Panasonic Electronic ComponentsIn Stock: 101835ERJ-8ENF3003V Datasheet

DirectRFQ

RC1206FR-07300KL

YAGEOIn Stock: 4318RC1206FR-07300KL Datasheet

DirectRFQ

RMCF1206FT300K

Stackpole Electronics IncIn Stock: 16841RMCF1206FT300K Datasheet

DirectRFQ

AC1206FR-07300KL

YAGEOIn Stock: 8853AC1206FR-07300KL Datasheet

UpgradeRFQ

CRCW1206300KFKEAHP

Vishay DaleIn Stock: 8659CRCW1206300KFKEAHP Datasheet

UpgradeRFQ

CRS1206-FX-3003ELF

Bourns Inc.In Stock: 7753CRS1206-FX-3003ELF Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following core parameters: resistance value (300 kOhms), tolerance (±1%), package type (1206), composition (thick film), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C to 155°C). Parts are grouped into three categories:

Direct Equivalents maintain all electrical and mechanical specifications identical to MCR18ERTF3003, differing only in manufacturer, packaging format (Tape & Reel vs. Cut Tape), or product status. These include KTR18EZPF3003, CR1206-FX-3003ELF, CRCW1206300KFKEA, ERJ-8ENF3003V, RC1206FR-07300KL, and RMCF1206FT300K.

Upgraded Substitutes provide enhanced power ratings or additional certifications while maintaining the same resistance, tolerance, package, and temperature specifications. These include ESR18EZPF3003 (0.5W rating with pulse withstanding), CRCW1206300KFKEAHP (0.75W rating with pulse withstanding), AC1206FR-07300KL (automotive AEC-Q200 with moisture resistance), and CRS1206-FX-3003ELF (0.5W with high voltage and pulse withstanding capability).

Parameter Comparison

Engineering Selection Recommendations

For direct replacement in existing designs, KTR18EZPF3003, CR1206-FX-3003ELF, CRCW1206300KFKEA, RC1206FR-07300KL, and RMCF1206FT300K are functionally equivalent to MCR18ERTF3003 and maintain active product status with full availability.

For automotive applications requiring AEC-Q200 qualification, CRCW1206300KFKEA, RMCF1206FT300K, AC1206FR-07300KL, and KTR18EZPF3003 are suitable selections. AC1206FR-07300KL additionally provides moisture resistance certification.

For applications requiring enhanced power dissipation capability, ESR18EZPF3003, CRCW1206300KFKEAHP, and CRS1206-FX-3003ELF offer 0.5W or 0.75W ratings while maintaining the same 1206 package footprint and resistance value. These upgrades are backward compatible in circuit designs where power margin is not a constraint.

ERJ-8ENF3003V is marked "Not For New Designs" and should be avoided for new product development despite its technical equivalence.

Frequently Asked Questions (FAQ)

Q: Can I use a higher power-rated substitute in place of the MCR18ERTF3003?

A: Yes. ESR18EZPF3003 (0.5W), CRCW1206300KFKEAHP (0.75W), and CRS1206-FX-3003ELF (0.5W) are physically compatible in the same 1206 footprint and provide identical electrical performance with increased power handling capability. Higher power ratings do not degrade circuit performance in applications designed for 0.25W operation.

Q: What is the difference between direct equivalents and upgraded substitutes?

A: Direct equivalents maintain identical specifications including power rating (0.25W). Upgraded substitutes provide enhanced features such as higher power ratings, automotive AEC-Q200 certification, pulse withstanding capability, or moisture resistance while preserving the core electrical parameters (300 kOhms, ±1%, 1206 package).

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL Level 1 (Unlimited) moisture sensitivity rating, matching the environmental compliance profile of MCR18ERTF3003.

Q: Which substitute offers the best availability?

A: ERJ-8ENF3003V has the highest inventory (101,746 pcs), followed by KTR18EZPF3003 (24,965 pcs) and CRCW1206300KFKEA (19,595 pcs). However, ERJ-8ENF3003V is marked "Not For New Designs." Among active products, KTR18EZPF3003 and CRCW1206300KFKEA provide optimal availability.

Q: Can I substitute parts between different manufacturers?

A: Yes. All listed parts meet identical electrical specifications (300 kOhms, ±1%, 0.25W, 1206 package, ±100ppm/°C, -55°C to 155°C). Cross-manufacturer substitution is valid provided the specific part number's features and product status align with application requirements.

Q: What is the significance of "Automotive AEC-Q200" certification?

A: AEC-Q200 certification indicates the part meets automotive industry reliability and quality standards. Parts with this certification are suitable for automotive applications and provide enhanced traceability and failure rate documentation. Non-automotive parts are equally suitable for general industrial and consumer applications.