MCR18ERTF4530 Equivalent & Substitute Parts

Part Overview

The MCR18ERTF4530 is a 453 Ohm ±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 alternatives that maintain the same electrical and mechanical specifications. Substitute parts must match the resistance value, tolerance, power rating, package dimensions, and operating temperature range to ensure direct compatibility in circuit applications.

Key Parameters

Parameter	Value
Resistance	453 Ohms
Tolerance	±1%
Power Rating	0.25W (1/4W)
Package / Case	1206 (3216 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C ~ 155°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the MCR18ERTF4530 are classified based on the following substitution criteria:

Direct Substitutes (Identical Electrical & Mechanical Specifications): Parts that match all critical parameters: 453 Ohms resistance, ±1% tolerance, 0.25W power rating, 1206 package, ±100ppm/°C temperature coefficient, and -55°C ~ 155°C operating range. These parts are electrically and mechanically interchangeable without circuit modification.

Upgrade Substitutes (Enhanced Power Rating): Parts that exceed the original power specification while maintaining all other parameters. The ESR18EZPF4530 provides 0.5W (1/2W) rating instead of 0.25W, offering improved thermal performance in the same package footprint.

Substitution Logic: All substitute parts maintain the core electrical parameters (resistance value, tolerance, temperature coefficient, operating temperature) and package dimensions (1206 case). Variations in physical dimensions (length, width, height) within the 1206 standard and additional features (automotive certification, pulse withstanding capability) do not affect substitutability for standard applications.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Operating Temp	Product Status	RoHS
MCR18ERTF4530	Rohm Semiconductor	453 Ω	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Discontinued	ROHS3
KTR18EZPF4530	Rohm Semiconductor	453 Ω	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Active	ROHS3
ESR18EZPF4530	Rohm Semiconductor	453 Ω	±1%	0.5	1206	±100ppm/°C	-55°C ~ 155°C	Active	ROHS3
CRCW1206453RFKEA	Vishay Dale	453 Ω	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Active	ROHS3
ERJ-8ENF4530V	Panasonic Electronic Components	453 Ω	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Not For New Designs	ROHS3
RC1206FR-07453RL	YAGEO	453 Ω	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Active	ROHS3
RMCF1206FT453R	Stackpole Electronics Inc	453 Ω	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	Active	ROHS3

Engineering Selection Recommendations

Primary Recommendation: KTR18EZPF4530 (Rohm Semiconductor) is the preferred direct substitute. It maintains identical electrical and mechanical specifications to the MCR18ERTF4530 while offering active product status and automotive AEC-Q200 certification. As a Rohm product, it provides continuity with the original manufacturer.

Alternative Direct Substitutes: CRCW1206453RFKEA (Vishay Dale), RC1206FR-07453RL (YAGEO), and RMCF1206FT453R (Stackpole Electronics Inc) are all active products with identical core specifications. These options provide multiple sourcing channels and high inventory availability.

Upgrade Option: ESR18EZPF4530 (Rohm Semiconductor) offers enhanced 0.5W power rating in the same 1206 package with automotive AEC-Q200 certification and pulse withstanding capability. Select this part for applications requiring improved thermal margin or pulse handling.

Avoid: ERJ-8ENF4530V (Panasonic Electronic Components) carries "Not For New Designs" status and should not be selected for new circuit implementations despite meeting electrical specifications.

Frequently Asked Questions (FAQ)

Q: Can I use ESR18EZPF4530 as a direct replacement for MCR18ERTF4530? A: Yes. The ESR18EZPF4530 is a direct substitute with identical resistance, tolerance, temperature coefficient, and operating range. The higher 0.5W power rating provides additional thermal capability without affecting circuit function.

Q: Are all substitute parts in the same 1206 package? A: Yes. All listed substitutes use the 1206 (3216 Metric) package. Minor variations in physical dimensions (length, width, height) within the 1206 standard do not affect PCB footprint compatibility or circuit performance.

Q: What does AEC-Q200 certification mean? A: AEC-Q200 is an automotive qualification standard. Parts with this certification meet automotive industry reliability and performance requirements. This certification is optional for general-purpose applications but required for automotive circuit designs.

Q: Why is ERJ-8ENF4530V marked "Not For New Designs"? A: This designation indicates the manufacturer is phasing out the product line. While the part meets all electrical specifications, it should not be selected for new circuit designs due to potential future availability constraints.

Q: Can I substitute parts from different manufacturers? A: Yes. All listed substitutes maintain identical electrical parameters (453 Ω, ±1%, ±100ppm/°C, -55°C ~ 155°C) and package specifications (1206). Manufacturer differences do not affect circuit compatibility.

Q: What is the significance of ±100ppm/°C temperature coefficient? A: This parameter defines resistance change over temperature. All substitutes maintain this specification, ensuring consistent circuit performance across the -55°C ~ 155°C operating range.

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