KTR18EZPJ243 Equivalent & Substitute Parts

Part Overview

The KTR18EZPJ243 is a 24 kOhms ±5% 0.25W thick film chip resistor in 1206 (3216 Metric) package manufactured by Rohm Semiconductor. This automotive-grade component features AEC-Q200 qualification and high voltage capability, designed for applications requiring reliable performance across -55°C to 155°C operating temperature range. The part is currently active in production with 817 pieces in stock.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when design requirements shift toward higher tolerance specifications, or when alternative packaging formats are required for supply chain optimization.

Key Parameters

Parameter	Value
Resistance	24 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
Automotive Rating	AEC-Q200
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	MSL 1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the KTR18EZPJ243 is determined by strict adherence to the following parameters:

Primary Substitution Criteria (Must Match):

Resistance value: 24 kOhms
Power rating: 0.25W (1/4W)
Package: 1206 (3216 Metric)
Composition: Thick Film
Operating temperature range: -55°C to 155°C minimum
RoHS3 compliance
MSL 1 rating

Secondary Substitution Criteria (Allowable Variations):

Tolerance: ±5% (primary specification) or ±1% (upgrade specification)
Temperature coefficient: ±200ppm/°C (primary) or ±100ppm/°C (upgrade)
Automotive rating: AEC-Q200 (preferred) or general industrial (acceptable)
Packaging format: Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel

Substitute parts are grouped into three categories based on their relationship to the main part: Upgrade parts offer improved tolerance or temperature coefficient specifications; Direct equivalents maintain identical electrical specifications; Similar parts match core parameters but may have discontinued status.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power	Temp Coeff	Package	AEC-Q200	Status	Inventory
KTR18EZPJ243	Rohm Semiconductor	24 kΩ	±5%	0.25W	±200ppm/°C	1206	Yes	Active	817
KTR18EZPF2402	Rohm Semiconductor	24 kΩ	±1%	0.25W	±100ppm/°C	1206	Yes	Active	3563
MCR18ERTF2402	Rohm Semiconductor	24 kΩ	±1%	0.25W	±100ppm/°C	1206	No	Discontinued	3048
MCR18ERTJ243	Rohm Semiconductor	24 kΩ	±5%	0.25W	±200ppm/°C	1206	No	Discontinued	4503
ERJ-8GEYJ243V	Panasonic Electronic Components	24 kΩ	±5%	0.25W	±200ppm/°C	1206	Yes	Not For New Designs	67022
RMCF1206JT24K0	Stackpole Electronics Inc	24 kΩ	±5%	0.25W	±200ppm/°C	1206	Yes	Active	14459
CRCW120624K0JNEA	Vishay Dale	24 kΩ	±5%	0.25W	±200ppm/°C	1206	Yes	Active	16116
ERJ-8ENF2402V	Panasonic Electronic Components	24 kΩ	±1%	0.25W	±100ppm/°C	1206	Yes	Not For New Designs	44916
RC1206FR-0724KL	YAGEO	24 kΩ	±1%	0.25W	±100ppm/°C	1206	No	Active	140347
RC1206JR-0724KL	YAGEO	24 kΩ	±5%	0.25W	±100ppm/°C	1206	No	Active	95951
RMCF1206FT24K0	Stackpole Electronics Inc	24 kΩ	±1%	0.25W	±100ppm/°C	1206	Yes	Active	8629

Engineering Selection Recommendations

For Direct Equivalent Replacement (Identical Specifications): RMCF1206JT24K0 (Stackpole Electronics Inc) and CRCW120624K0JNEA (Vishay Dale) are active production parts that maintain the ±5% tolerance, ±200ppm/°C temperature coefficient, and AEC-Q200 automotive qualification of the KTR18EZPJ243. Both are available in high inventory quantities and provide seamless functional equivalence.

For Upgraded Tolerance Specification: KTR18EZPF2402 (Rohm Semiconductor), RMCF1206FT24K0 (Stackpole Electronics Inc), and RC1206FR-0724KL (YAGEO) offer ±1% tolerance with ±100ppm/°C temperature coefficient. These upgrades are suitable when circuit design requires tighter tolerance control. KTR18EZPF2402 and RMCF1206FT24K0 retain AEC-Q200 qualification; RC1206FR-0724KL is industrial-grade with moisture-resistant composition.

For Supply Chain Continuity: ERJ-8GEYJ243V (Panasonic Electronic Components) maintains identical electrical specifications and AEC-Q200 rating with the highest inventory availability (67,022 units). However, this part carries "Not For New Designs" status, limiting its use to legacy system support or existing production runs.

Parts to Avoid for New Designs: MCR18ERTJ243 and MCR18ERTF2402 are discontinued at DiGi Electronics and should not be selected for new product development despite current inventory availability.

Frequently Asked Questions (FAQ)

Q: Can I substitute KTR18EZPJ243 with a ±1% tolerance part? A: Yes. Parts with ±1% tolerance (KTR18EZPF2402, RMCF1206FT24K0, RC1206FR-0724KL) are direct upgrades that provide superior accuracy while maintaining all other electrical and mechanical specifications. This substitution is one-directional; ±1% parts can replace ±5% specifications, but not vice versa.

Q: Are all substitute parts AEC-Q200 qualified? A: No. AEC-Q200 qualification is present in KTR18EZPJ243, KTR18EZPF2402, RMCF1206JT24K0, RMCF1206FT24K0, CRCW120624K0JNEA, and ERJ-8ENF2402V. YAGEO RC series parts (RC1206FR-0724KL, RC1206JR-0724KL) are industrial-grade without automotive certification. Select AEC-Q200 parts for automotive applications.

Q: What is the difference between Tape & Reel and Cut Tape packaging? A: Both formats contain identical components in 1206 package. Tape & Reel (TR) is supplied on continuous carrier tape suitable for automated pick-and-place assembly. Cut Tape (CT) & Digi-Reel is pre-cut and wound on a reel for manual or semi-automated handling. Electrical and mechanical performance are identical; selection depends on assembly equipment compatibility.

Q: Why do some parts show "Not For New Designs" status? A: ERJ-8GEYJ243V and ERJ-8ENF2402V carry this designation from Panasonic, indicating the manufacturer is phasing out these products. While current inventory is available, these parts should not be selected for new product development to avoid future obsolescence issues.

Q: Can I use RC1206JR-0724KL (moisture-resistant) instead of KTR18EZPJ243? A: Yes, with considerations. RC1206JR-0724KL matches all core electrical specifications (24 kΩ, ±5%, 0.25W, 1206 package) and operating temperature range. However, it lacks AEC-Q200 automotive qualification and has ±100ppm/°C temperature coefficient versus ±200ppm/°C. Use only in non-automotive applications or where automotive certification is not required.

Q: What is MSL 1 rating and why does it matter? A: MSL (Moisture Sensitivity Level) 1 indicates unlimited shelf life with no special moisture control requirements during storage or handling. All listed substitute parts carry MSL 1 rating, ensuring compatibility with standard component storage and assembly processes.

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