ESR18EZPJ512 Equivalent & Substitute Parts

Part Overview

The ESR18EZPJ512 is a 5.1 kOhms ±5% 0.5W thick film chip resistor in 1206 (3216 Metric) package manufactured by Rohm Semiconductor. This automotive-grade component features AEC-Q200 certification and pulse withstanding capability, designed for high-reliability applications requiring stable resistance performance across extended temperature ranges from -55°C to 155°C. The part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Equivalent and substitute parts are identified when design requirements allow for variations in tolerance, power rating, or manufacturer while maintaining core electrical and mechanical compatibility within the 1206 package footprint.

Key Parameters

Parameter	Value
Resistance	5.1 kOhms
Tolerance	±5%
Power Rating	0.5W (1/2W)
Package	1206 (3216 Metric)
Composition	Thick Film
Operating Temperature	-55°C to 155°C
Automotive Rating	AEC-Q200
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the ESR18EZPJ512 is determined by the following criteria:

Primary Compatibility Requirements:

Resistance value: 5.1 kOhms (exact match required)
Package: 1206 (3216 Metric) form factor
Composition: Thick film construction
Automotive certification: AEC-Q200 compliance
RoHS compliance: ROHS3 Compliant

Allowable Variations:

Tolerance: ±5% or tighter (±0.5% acceptable as upgrade)
Power rating: Equal to or greater than 0.5W
Temperature coefficient: ±100ppm/°C to ±200ppm/°C
Manufacturer: Different manufacturers acceptable if all primary requirements met

Substitute Categories:

Upgrade Parts – Enhanced specifications suitable for direct replacement with improved performance margins:

ESR18EZPD5101 (Rohm Semiconductor): Tighter tolerance ±0.5%, same power rating
CRCW12065K10JNEAHP (Vishay Dale): Higher power rating 0.75W, same tolerance

Direct Equivalents – Functionally identical specifications from alternative manufacturers:

ERJ-P08J512V (Panasonic): Higher power rating 0.667W, same tolerance
RCS12065K10JNEA (Vishay Dale): Identical specifications
SR1206JR-7W5K1L (YAGEO): Identical specifications

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Package	AEC-Q200	RoHS3
ESR18EZPJ512	Rohm Semiconductor	5.1 kΩ	±5%	0.5	±200	1206	Yes	Yes
ESR18EZPD5101	Rohm Semiconductor	5.1 kΩ	±0.5%	0.5	±100	1206	Yes	Yes
ERJ-P08J512V	Panasonic Electronic Components	5.1 kΩ	±5%	0.667	±200	1206	Yes	Yes
RCS12065K10JNEA	Vishay Dale	5.1 kΩ	±5%	0.5	±200	1206	Yes	Yes
SR1206JR-7W5K1L	YAGEO	5.1 kΩ	±5%	0.5	±100	1206	Yes	Yes
CRCW12065K10JNEAHP	Vishay Dale	5.1 kΩ	±5%	0.75	±200	1206	Yes	Yes

Engineering Selection Recommendations

All listed substitute parts maintain active product status and full compliance with AEC-Q200 automotive certification and ROHS3 requirements, ensuring suitability for automotive and high-reliability applications.

For tolerance-critical applications: ESR18EZPD5101 provides ±0.5% tolerance with identical power rating and package, enabling direct substitution where tighter tolerance specifications are required.

For thermal margin applications: CRCW12065K10JNEAHP and ERJ-P08J512V offer increased power dissipation capability (0.75W and 0.667W respectively) while maintaining identical resistance and tolerance values, suitable for circuits requiring additional thermal headroom.

For multi-source procurement: RCS12065K10JNEA (Vishay Dale) and SR1206JR-7W5K1L (YAGEO) provide functionally identical specifications to the primary part, enabling supply chain flexibility and inventory optimization across multiple manufacturers.

All substitute parts are available in tape and reel packaging with unlimited moisture sensitivity rating (MSL 1), matching the original part's handling and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can ESR18EZPD5101 replace ESR18EZPJ512 in all applications?

A: Yes. ESR18EZPD5101 is a direct upgrade with tighter tolerance (±0.5% versus ±5%), lower temperature coefficient (±100ppm/°C versus ±200ppm/°C), and identical power rating and package. All electrical and mechanical parameters are compatible.

Q: What is the difference between the 0.5W and higher power-rated substitutes?

A: Higher power ratings (0.667W for ERJ-P08J512V and 0.75W for CRCW12065K10JNEAHP) indicate greater thermal dissipation capability. These parts are suitable for circuits with higher current loads or thermal stress. The 1206 package dimensions remain identical across all parts listed.

Q: Are all substitute parts automotive-qualified?

A: Yes. All listed substitute parts carry AEC-Q200 certification and ROHS3 compliance, meeting automotive reliability and environmental standards equivalent to the primary part.

Q: Can I use YAGEO SR1206JR-7W5K1L as a direct replacement?

A: Yes. SR1206JR-7W5K1L matches the primary part's resistance, tolerance, power rating, and package specifications. The only difference is the manufacturer and a slightly lower temperature coefficient (±100ppm/°C versus ±200ppm/°C), which is advantageous for temperature-sensitive applications.

Q: What are the physical dimension differences between substitute parts?

A: All parts use the 1206 (3216 Metric) package with length 3.10–3.20mm and width 1.60mm. Maximum seated height is 0.65–0.70mm across all parts, with no functional impact on PCB layout or assembly.

Q: Is MSL rating consistent across all substitute parts?

A: Yes. All substitute parts have MSL 1 (unlimited) rating, matching the primary part's moisture sensitivity level and requiring identical storage and handling procedures.

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