KTR18EZPJ302 Equivalent & Substitute Parts

Part Overview

The KTR18EZPJ302 is a 3 kOhms ±5% 0.25W 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 high voltage capability and operates across -55°C to 155°C. The part is currently active in production with 1102 pieces in stock inventory.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when design requirements demand tighter tolerance specifications, or when higher power ratings are required for circuit optimization. Substitute selection must maintain compatibility across resistance value, package dimensions, and electrical ratings.

Key Parameters

Parameter	Value
Resistance	3 kOhms
Tolerance	±5%
Power Rating	0.25W (1/4W)
Package / Case	1206 (3216 Metric)
Composition	Thick Film
Operating Temperature Range	-55°C ~ 155°C
Temperature Coefficient	±200ppm/°C
Automotive Rating	AEC-Q200
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the KTR18EZPJ302 are categorized based on the following substitution criteria:

Direct Equivalents maintain all critical parameters: 3 kOhms resistance, ±5% tolerance, 0.25W power rating, 1206 package, and -55°C to 155°C operating range. These parts are interchangeable without circuit redesign.

Upgrade Substitutes improve tolerance specification from ±5% to ±1%, reducing temperature coefficient from ±200ppm/°C to ±100ppm/°C while maintaining identical resistance, power rating, and package. These parts provide enhanced accuracy for precision applications.

Higher Power Variants increase power rating to 0.5W (1/2W) while preserving all other electrical and mechanical parameters, suitable for applications requiring increased thermal margin.

Packaging Variants include alternative tape formats (Cut Tape vs. Tape & Reel) with identical electrical specifications.

Critical parameters determining substitutability: resistance value (3 kOhms), package type (1206), power rating (0.25W minimum), operating temperature range (-55°C to 155°C minimum), and composition (thick film).

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff	Package	AEC-Q200	Product Status	Inventory
KTR18EZPJ302	Rohm Semiconductor	3 kOhms	±5%	0.25	±200ppm/°C	1206	Yes	Active	1102
KTR18EZPF3001	Rohm Semiconductor	3 kOhms	±1%	0.25	±100ppm/°C	1206	Yes	Active	9158
ESR18EZPJ302	Rohm Semiconductor	3 kOhms	±5%	0.5	±200ppm/°C	1206	Yes	Active	14482
CRCW12063K00JNEA	Vishay Dale	3 kOhms	±5%	0.25	±200ppm/°C	1206	Yes	Active	44566
ERJ-8GEYJ302V	Panasonic Electronic Components	3 kOhms	±5%	0.25	±200ppm/°C	1206	Yes	Not For New Designs	113290
RMCF1206JT3K00	Stackpole Electronics Inc	3 kOhms	±5%	0.25	±200ppm/°C	1206	Yes	Active	175414
CR1206-FX-3001ELF	Bourns Inc.	3 kOhms	±1%	0.25	±100ppm/°C	1206	No	Active	18913
ERJ-8ENF3001V	Panasonic Electronic Components	3 kOhms	±1%	0.25	±100ppm/°C	1206	Yes	Not For New Designs	3353
RC1206FR-073KL	YAGEO	3 kOhms	±1%	0.25	±100ppm/°C	1206	No	Active	95390
RC1206JR-073KL	YAGEO	3 kOhms	±5%	0.25	±100ppm/°C	1206	No	Active	13523
RMCF1206FT3K00	Stackpole Electronics Inc	3 kOhms	±1%	0.25	±100ppm/°C	1206	Yes	Active	66797

Engineering Selection Recommendations

For Direct Replacement (Active Status, Identical Specifications): CRCW12063K00JNEA (Vishay Dale) and RMCF1206JT3K00 (Stackpole Electronics Inc) provide direct electrical and mechanical equivalence with AEC-Q200 automotive rating. Both maintain ±5% tolerance, 0.25W power rating, and active production status. RMCF1206JT3K00 offers significantly higher inventory availability (175414 units).

For Tolerance Upgrade (±1% Specification): KTR18EZPF3001 (Rohm Semiconductor) and RMCF1206FT3K00 (Stackpole Electronics Inc) upgrade tolerance to ±1% with reduced temperature coefficient (±100ppm/°C) while maintaining AEC-Q200 rating and active status. Both are suitable for precision circuit applications requiring tighter component tolerances.

For Higher Power Applications (0.5W Rating): ESR18EZPJ302 (Rohm Semiconductor) increases power dissipation capability to 0.5W while preserving all other parameters including AEC-Q200 rating and active production status.

Parts Not Recommended for New Designs: ERJ-8GEYJ302V and ERJ-8ENF3001V (Panasonic Electronic Components) carry "Not For New Designs" status and should be avoided in new circuit development despite adequate inventory levels.

Moisture-Resistant Variants: CR1206-FX-3001ELF (Bourns Inc.) and RC1206FR-073KL (YAGEO) provide moisture-resistant composition with ±1% tolerance but lack AEC-Q200 automotive certification. These are suitable for non-automotive applications requiring enhanced moisture protection.

Frequently Asked Questions (FAQ)

Q: Can I use a ±1% tolerance part as a direct replacement for the ±5% KTR18EZPJ302?

A: Yes. A ±1% tolerance part is a superior substitute that maintains all other electrical and mechanical parameters while providing tighter accuracy. The circuit will function identically or with improved performance in tolerance-sensitive applications.

Q: What is the difference between KTR18EZPJ302 and ESR18EZPJ302?

A: Both are Rohm Semiconductor 3 kOhms 1206 resistors with ±5% tolerance and AEC-Q200 rating. The primary difference is power rating: KTR18EZPJ302 is rated 0.25W while ESR18EZPJ302 is rated 0.5W. The higher power rating provides greater thermal margin but does not affect electrical performance in standard applications.

Q: Are all substitute parts RoHS3 compliant?

A: All listed substitute parts are ROHS3 compliant. This compliance is maintained across all manufacturers and part variants.

Q: Why do some parts have "Not For New Designs" status?

A: Parts marked "Not For New Designs" are in mature or declining production phases. While functionally equivalent and currently in stock, they may face future availability constraints. Active status parts are preferred for new circuit development.

Q: What is the significance of AEC-Q200 rating?

A: AEC-Q200 certification indicates the part meets automotive-grade reliability standards including thermal cycling, moisture resistance, and failure rate requirements. Parts with this rating are suitable for automotive and high-reliability applications. Non-AEC-Q200 parts are acceptable for general industrial and consumer applications.

Q: Can I substitute a moisture-resistant variant like CR1206-FX-3001ELF?

A: Yes, if your application does not require AEC-Q200 automotive certification. Moisture-resistant variants provide enhanced protection in humid environments while maintaining identical electrical specifications and package compatibility.

Q: What packaging options are available?

A: Most parts are supplied in Tape & Reel (TR) format for automated assembly. RC1206JR-073KL is available in Cut Tape (CT) & Digi-Reel format. Packaging format does not affect electrical performance, only handling and assembly methodology.

Q: Which substitute offers the best inventory availability?

A: RMCF1206JT3K00 (Stackpole Electronics Inc) provides the highest inventory level at 175414 units with active production status and full AEC-Q200 automotive certification, making it the most readily available direct equivalent.

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