KTR18EZPJ680 Equivalent & Substitute Parts

Part Overview

The KTR18EZPJ680 is a 68 Ohm ±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 736 units in stock.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when design requirements demand tighter tolerance specifications, or when alternative manufacturers' components meet identical electrical and mechanical parameters for cost optimization or supply chain flexibility.

Key Parameters

Parameter	Value
Resistance	68 Ohms
Tolerance	±5%
Power Rating	0.25W (1/4W)
Package	1206 (3216 Metric)
Composition	Thick Film
Operating Temperature	-55°C to 155°C
Temperature Coefficient	±200ppm/°C
Automotive Rating	AEC-Q200
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution relationships for the KTR18EZPJ680 are determined by strict equivalence across the following critical parameters:

Direct Substitutes maintain identical electrical specifications: 68 Ohms resistance, ±5% tolerance, 0.25W power rating, 1206 package, thick film composition, -55°C to 155°C operating range, and AEC-Q200 automotive qualification. These parts are interchangeable without circuit redesign.

Upgrade Substitutes improve tolerance from ±5% to ±1% while maintaining all other parameters including 68 Ohms, 0.25W rating, 1206 package, and operating temperature range. These provide enhanced precision for applications requiring tighter component tolerances.

Similar Parts modify the power rating to 0.5W (1/2W) while preserving resistance value, tolerance, package, and operating temperature. These are suitable only when circuit design permits higher power dissipation capability.

All substitute parts listed maintain ROHS3 compliance, MSL Level 1 rating, and identical package dimensions (0.126" L x 0.063" W / 3.20mm x 1.60mm).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff	AEC-Q200	Product Status	Packaging
KTR18EZPJ680	Rohm Semiconductor	68 Ω	±5%	0.25	±200ppm/°C	Yes	Active	Tape & Reel
KTR18EZPF68R0	Rohm Semiconductor	68 Ω	±1%	0.25	±100ppm/°C	Yes	Active	Tape & Reel
MCR18ERTF68R0	Rohm Semiconductor	68 Ω	±1%	0.25	±100ppm/°C	No	Discontinued	Cut Tape & Digi-Reel
ESR18EZPJ680	Rohm Semiconductor	68 Ω	±5%	0.5	±200ppm/°C	Yes	Active	Tape & Reel
MCR18ERTJ680	Rohm Semiconductor	68 Ω	±5%	0.25	±200ppm/°C	No	Discontinued	Cut Tape & Digi-Reel
CRCW120668R0JNEA	Vishay Dale	68 Ω	±5%	0.25	±200ppm/°C	Yes	Active	Tape & Reel
ERJ-8GEYJ680V	Panasonic Electronic Components	68 Ω	±5%	0.25	±200ppm/°C	Yes	Not For New Designs	Tape & Reel
RMCF1206JT68R0	Stackpole Electronics Inc	68 Ω	±5%	0.25	±200ppm/°C	Yes	Active	Tape & Reel
CR1206-FX-68R0ELF	Bourns Inc.	68 Ω	±1%	0.25	±100ppm/°C	No	Active	Tape & Reel
CRG1206F68R	TE Connectivity Passive Product	68 Ω	±1%	0.25	±200ppm/°C	No	Active	Tape & Reel
ERJ-8ENF68R0V	Panasonic Electronic Components	68 Ω	±1%	0.25	±100ppm/°C	Yes	Not For New Designs	Tape & Reel

Engineering Selection Recommendations

For Direct Replacement (Active Production): CRCW120668R0JNEA (Vishay Dale) and RMCF1206JT68R0 (Stackpole Electronics Inc) are active production alternatives with identical electrical and mechanical specifications, AEC-Q200 certification, and high inventory availability (35,538 and 666,566 units respectively).

For Tolerance Upgrade: KTR18EZPF68R0 (Rohm Semiconductor, same manufacturer) upgrades tolerance to ±1% with improved temperature coefficient (±100ppm/°C) while maintaining AEC-Q200 rating and active production status. This part is recommended when circuit design requires enhanced precision.

For Discontinued Part Avoidance: MCR18ERTF68R0, MCR18ERTJ680, ERJ-8GEYJ680V, and ERJ-8ENF68R0V are marked as discontinued or not for new designs. These should be avoided in new designs despite current inventory availability.

For Power Rating Increase: ESR18EZPJ680 (Rohm Semiconductor) provides 0.5W power rating with identical resistance, tolerance, and AEC-Q200 qualification. Selection depends on circuit thermal requirements.

All recommended substitutes maintain ROHS3 compliance, MSL Level 1 rating, and compatibility with standard 1206 package assembly processes.

Frequently Asked Questions (FAQ)

Q: Can KTR18EZPF68R0 replace KTR18EZPJ680 directly? A: Yes. Both parts share identical resistance (68 Ω), power rating (0.25W), package (1206), operating temperature range (-55°C to 155°C), and AEC-Q200 certification. The KTR18EZPF68R0 provides tighter tolerance (±1% vs ±5%) and lower temperature coefficient (±100ppm/°C vs ±200ppm/°C), making it a direct upgrade substitute.

Q: What is the difference between direct substitutes and upgrade substitutes? A: Direct substitutes maintain all electrical and mechanical parameters identically. Upgrade substitutes improve specific parameters—typically tolerance or temperature coefficient—while preserving core functionality. Upgrade substitutes are backward compatible but offer enhanced performance.

Q: Can ESR18EZPJ680 be used instead of KTR18EZPJ680? A: ESR18EZPJ680 differs in power rating (0.5W vs 0.25W). It is suitable only if circuit design permits higher power dissipation. The 1206 package dimensions remain identical, but thermal characteristics differ. Verify circuit requirements before substitution.

Q: Why are some parts marked "Not For New Designs"? A: Parts designated "Not For New Designs" (ERJ-8GEYJ680V, ERJ-8ENF68R0V) indicate manufacturer end-of-life status. While current inventory exists, these parts should not be selected for new product development to ensure long-term supply chain stability.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with standard manufacturing and environmental regulations.

Q: What packaging formats are available? A: Most substitutes are supplied in Tape & Reel (TR) format for automated assembly. MCR18ERTF68R0 and MCR18ERTJ680 use Cut Tape (CT) & Digi-Reel® packaging. Verify packaging compatibility with assembly equipment before procurement.

Q: Can I use CRCW120668R0JNEA from Vishay Dale as a primary choice? A: Yes. CRCW120668R0JNEA is an active production part with AEC-Q200 certification, identical electrical specifications, and the highest inventory availability (35,538 units). It is suitable as a primary alternative to KTR18EZPJ680.

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