MCR18ERTJ272 Equivalent & Substitute Parts

Part Overview

The MCR18ERTJ272 is a 2.7 kOhms ±5% 0.25W thick film chip resistor in 1206 (3216 Metric) package manufactured by Rohm Semiconductor. This part is discontinued at DiGi Electronics, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The part is ROHS3 compliant with unlimited moisture sensitivity level (MSL 1) and operates across -55°C to 155°C temperature range.

Key Parameters

Parameter	Value
Resistance	2.7 kOhms
Tolerance	±5%
Power Rating	0.25W (1/4W)
Package	1206 (3216 Metric)
Composition	Thick Film
Temperature Coefficient	±200ppm/°C
Operating Temperature Range	-55°C to 155°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for MCR18ERTJ272 is determined by the following critical parameters:

Mandatory Matching Parameters:

Resistance value: 2.7 kOhms
Package: 1206 (3216 Metric)
Composition: Thick Film
Operating temperature range: -55°C to 155°C minimum
RoHS3 compliance

Allowable Variations:

Tolerance: ±5% (primary specification) or tighter (±1%)
Power rating: 0.25W minimum (0.5W, 0.667W, or 0.75W acceptable as upgrades)
Temperature coefficient: ±200ppm/°C (primary) or ±100ppm/°C (tighter specification)
Manufacturer: Different manufacturers acceptable if electrical and mechanical specifications align
Certifications: AEC-Q200 automotive qualification acceptable as upgrade feature

Substitute parts are grouped into two categories: direct equivalents (matching all primary specifications) and upgrades (enhanced power rating, tighter tolerance, or additional certifications).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Package	Product Status	AEC-Q200
MCR18ERTJ272	Rohm Semiconductor	2.7 kΩ	±5%	0.25	±200	1206	Discontinued	No
CRCW12062K70JNEAC	Vishay Dale	2.7 kΩ	±5%	0.25	±200	1206	Active	No
ERJ-8GEYJ272V	Panasonic Electronic Components	2.7 kΩ	±5%	0.25	±200	1206	Not For New Designs	Yes
RMCF1206JT2K70	Stackpole Electronics Inc	2.7 kΩ	±5%	0.25	±200	1206	Active	Yes
ESR18EZPJ272	Rohm Semiconductor	2.7 kΩ	±5%	0.5	±200	1206	Active	Yes
CRG1206F2K7	TE Connectivity Passive Product	2.7 kΩ	±1%	0.25	±100	1206	Active	No
ERJ-8ENF2701V	Panasonic Electronic Components	2.7 kΩ	±1%	0.25	±100	1206	Not For New Designs	Yes
KTR18EZPF2701	Rohm Semiconductor	2.7 kΩ	±1%	0.25	±100	1206	Active	Yes
CRCW12062K70JNEAHP	Vishay Dale	2.7 kΩ	±5%	0.75	±200	1206	Active	Yes
ERJ-P08J272V	Panasonic Electronic Components	2.7 kΩ	±5%	0.667	±200	1206	Active	Yes
RC1206FR-072K7L	YAGEO	2.7 kΩ	±1%	0.25	±100	1206	Active	No

Engineering Selection Recommendations

Direct Equivalents (Identical Electrical & Mechanical Specifications):

CRCW12062K70JNEAC (Vishay Dale) is the primary direct equivalent. It matches all electrical parameters and is in active production status with high inventory availability (25,826 pcs). This part is suitable for direct replacement in existing designs without circuit modification.

RMCF1206JT2K70 (Stackpole Electronics Inc) is an alternative direct equivalent with active product status and AEC-Q200 automotive qualification. It is suitable for applications requiring automotive-grade components.

Upgraded Specifications (Enhanced Performance):

ESR18EZPJ272 (Rohm Semiconductor) provides increased power rating (0.5W vs. 0.25W) while maintaining ±5% tolerance. This upgrade is suitable for applications requiring higher power dissipation capability. AEC-Q200 certification and pulse withstanding capability are included.

CRG1206F2K7 (TE Connectivity Passive Product) and RC1206FR-072K7L (YAGEO) offer tighter tolerance (±1% vs. ±5%) with improved temperature coefficient (±100ppm/°C vs. ±200ppm/°C). These upgrades are suitable for precision applications requiring better accuracy and stability.

KTR18EZPF2701 (Rohm Semiconductor) combines ±1% tolerance with AEC-Q200 automotive qualification and high voltage capability. This part is suitable for automotive applications requiring precision and enhanced reliability.

CRCW12062K70JNEAHP (Vishay Dale) provides increased power rating (0.75W) with AEC-Q200 qualification and pulse withstanding capability. This upgrade is suitable for high-reliability automotive applications with elevated power dissipation requirements.

ERJ-P08J272V (Panasonic Electronic Components) offers intermediate power rating (0.667W) with AEC-Q200 qualification and pulse withstanding capability. This part is suitable for automotive applications requiring moderate power upgrade.

Parts Not Recommended for New Designs:

ERJ-8GEYJ272V and ERJ-8ENF2701V (Panasonic Electronic Components) carry "Not For New Designs" status. These parts should be used only for legacy system maintenance or repair of existing equipment.

Frequently Asked Questions (FAQ)

Q: Can CRCW12062K70JNEAC directly replace MCR18ERTJ272 without circuit modification?

A: Yes. CRCW12062K70JNEAC is a direct equivalent with identical resistance (2.7 kΩ), tolerance (±5%), power rating (0.25W), package (1206), and operating temperature range (-55°C to 155°C). No circuit modification is required.

Q: What is the difference between direct equivalents and upgrades?

A: Direct equivalents match all electrical and mechanical specifications of the original part. Upgrades enhance one or more parameters (higher power rating, tighter tolerance, lower temperature coefficient, or automotive certification) while maintaining compatibility with the original circuit design.

Q: Can I use a 0.5W rated resistor (ESR18EZPJ272) in place of the 0.25W original part?

A: Yes. A higher power rating is a safe upgrade. The 0.5W part can dissipate more power than the original 0.25W specification, making it suitable for the same application. Physical dimensions remain compatible within the 1206 package specification.

Q: What does AEC-Q200 certification mean?

A: AEC-Q200 is an automotive qualification standard for passive components. Parts with this certification meet automotive industry reliability and performance requirements. AEC-Q200 certified parts are suitable for both automotive and general industrial applications.

Q: Are there dimensional differences between substitute parts?

A: Minor dimensional variations exist within the 1206 package specification. Length ranges from 0.120" to 0.126" and height from 0.026" to 0.028" depending on manufacturer. These variations are within standard 1206 package tolerances and do not affect PCB assembly compatibility.

Q: Why should I avoid parts marked "Not For New Designs"?

A: Parts with "Not For New Designs" status indicate the manufacturer is phasing out production. While suitable for legacy system maintenance, they may have limited future availability. For new designs, select parts with "Active" product status to ensure long-term supply chain reliability.

Q: What is the significance of temperature coefficient (±200ppm/°C vs. ±100ppm/°C)?

A: Temperature coefficient indicates how much the resistance value changes with temperature. Lower values (±100ppm/°C) provide better stability across temperature extremes. For precision applications, select parts with ±100ppm/°C specification.

Q: Can I mix different substitute parts in the same circuit?

A: Yes, provided all selected parts meet the circuit's electrical requirements. Mixing direct equivalents and upgrades is acceptable. Ensure all parts maintain the required resistance value (2.7 kΩ) and tolerance specification for your application.

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