MCR18EZPJ430 Equivalent & Substitute Parts

Part Overview

The MCR18EZPJ430 is a 43 Ohm ±5% 0.25W (1/4W) thick film chip resistor in 1206 (3216 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, making equivalent and substitute parts necessary for ongoing production and design requirements.

Key Parameters

Parameter	Value
Resistance	43 Ohms
Tolerance	±5%
Power Rating	0.25W (1/4W)
Package	1206 (3216 Metric)
Composition	Thick Film
Automotive Rating	AEC-Q200
Operating Temperature	-55°C to 155°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the MCR18EZPJ430 is determined by the following critical parameters:

Direct Equivalents maintain all electrical and mechanical specifications: 43 Ohms resistance, ±5% tolerance, 0.25W power rating, 1206 package, AEC-Q200 automotive rating, and -55°C to 155°C operating temperature range.

Upgrade Substitutes improve upon the original specification while maintaining mechanical compatibility and core electrical function. These include higher tolerance grades (±1%) or increased power ratings (0.5W, 2/3W) in the same 1206 package.

Legacy Parts remain functionally compatible but carry "Not For New Designs" status, indicating manufacturer phase-out.

The 1206 package footprint, AEC-Q200 compliance, and thick film composition are non-negotiable parameters for direct substitution in automotive applications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Product Status	Height Max (mm)
MCR18EZPJ430	Rohm Semiconductor	43 Ω	±5%	0.25	±200	Discontinued	0.65
CRCW120643R0JNEA	Vishay Dale	43 Ω	±5%	0.25	±200	Active	0.60
RMCF1206JT43R0	Stackpole Electronics Inc	43 Ω	±5%	0.25	±200	Active	0.70
ERJ-8GEYJ430V	Panasonic Electronic Components	43 Ω	±5%	0.25	±200	Not For New Designs	0.70
ESR18EZPJ430	Rohm Semiconductor	43 Ω	±5%	0.5	±200	Active	0.65
CRCW120643R0FKEA	Vishay Dale	43 Ω	±1%	0.25	±100	Active	0.60
ERJ-P08J430V	Panasonic Electronic Components	43 Ω	±5%	0.667	±200	Active	0.70

Engineering Selection Recommendations

For Direct Replacement (Active Status): CRCW120643R0JNEA (Vishay Dale) and RMCF1206JT43R0 (Stackpole Electronics Inc) are recommended as primary direct equivalents. Both maintain identical electrical specifications (43 Ω, ±5%, 0.25W) and AEC-Q200 automotive compliance. CRCW120643R0JNEA offers the lowest seated height (0.60mm), which may be advantageous for space-constrained designs.

For Improved Tolerance (Active Status): CRCW120643R0FKEA (Vishay Dale) provides ±1% tolerance with a lower temperature coefficient (±100ppm/°C) while maintaining 0.25W power rating and 1206 package. This upgrade is suitable for applications requiring tighter resistance accuracy.

For Increased Power Margin (Active Status): ESR18EZPJ430 (Rohm Semiconductor) and ERJ-P08J430V (Panasonic Electronic Components) offer higher power ratings (0.5W and 0.667W respectively) with pulse withstanding capability. These are suitable for applications with higher thermal stress or transient conditions while maintaining the same 43 Ω resistance and ±5% tolerance.

Avoid for New Designs: ERJ-8GEYJ430V (Panasonic Electronic Components) carries "Not For New Designs" status and should be used only for legacy system maintenance or repair.

Frequently Asked Questions (FAQ)

Q: Can I use CRCW120643R0FKEA as a direct replacement for MCR18EZPJ430? A: Yes, with the understanding that CRCW120643R0FKEA provides improved tolerance (±1% vs ±5%) and lower temperature coefficient (±100ppm/°C vs ±200ppm/°C). The electrical performance will exceed the original specification. Both parts are AEC-Q200 compliant in 1206 package.

Q: What is the difference between direct equivalents and upgrade substitutes? A: Direct equivalents (CRCW120643R0JNEA, RMCF1206JT43R0) match all specifications of the MCR18EZPJ430. Upgrade substitutes (ESR18EZPJ430, CRCW120643R0FKEA, ERJ-P08J430V) improve one or more parameters—higher power rating, tighter tolerance, or lower temperature coefficient—while maintaining mechanical and functional compatibility.

Q: Are all substitute parts AEC-Q200 compliant? A: Yes. All listed substitute parts carry AEC-Q200 automotive rating, meeting the same qualification standard as the original MCR18EZPJ430.

Q: Does the seated height difference between parts affect PCB assembly? A: Seated height variations (0.60mm to 0.70mm) are within standard 1206 package tolerance and do not affect PCB assembly compatibility. However, verify against specific design constraints if height is critical for your application.

Q: Can I use ERJ-8GEYJ430V for new production? A: No. ERJ-8GEYJ430V carries "Not For New Designs" status from Panasonic. Use this part only for maintenance or repair of existing systems. For new production, select from active-status alternatives.

Q: What is the advantage of using ESR18EZPJ430 over the original MCR18EZPJ430? A: ESR18EZPJ430 doubles the power rating from 0.25W to 0.5W and includes pulse withstanding capability, providing greater thermal margin and transient protection. Both maintain 43 Ω resistance, ±5% tolerance, and AEC-Q200 compliance in the same 1206 package.

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