KTR18EZPJ111 Equivalent & Substitute Parts

Part Overview

The KTR18EZPJ111 is a 110 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 766 units in stock. Substitute parts are necessary when primary sourcing is unavailable, when design requirements demand tighter tolerance specifications, or when enhanced environmental performance characteristics are required for specific application demands.

Key Parameters

Parameter	Value
Resistance	110 Ohms
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 is determined by strict parameter matching across electrical and mechanical specifications. The KTR18EZPJ111 establishes baseline requirements: 110 Ohm resistance, ±5% tolerance, 0.25W power rating, 1206 package, thick film composition, and AEC-Q200 automotive qualification.

Substitute parts are categorized into three groups:

Direct Substitutes (Equivalent Specifications): Parts matching all electrical parameters (110 Ohms ±5%, 0.25W) and mechanical package (1206) with identical or superior environmental ratings. These include CRCW1206110RJNEA (Vishay Dale), ERJ-8GEYJ111V (Panasonic), and CR1206-JW-111ELF (Bourns).

Upgrade Substitutes (Enhanced Tolerance): Parts with tighter tolerance specifications (±1% instead of ±5%) while maintaining 110 Ohm resistance, 0.25W power rating, and 1206 package. These include RMCF1206FT110R (Stackpole), CR1206-FX-1100ELF (Bourns), ERJ-8ENF1100V (Panasonic), and RC1206FR-07110RL (YAGEO). Tighter tolerance enables improved circuit performance in precision applications.

Similar Substitutes (Modified Parameters): Parts with matching resistance and tolerance but differing in power rating or environmental features. RC1206JR-07110RL (YAGEO) maintains ±5% tolerance with moisture-resistant characteristics. ERJ-P08J111V (Panasonic) increases power rating to 0.667W (2/3W) while retaining ±5% tolerance and AEC-Q200 rating.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	AEC-Q200	Product Status	Height Max (mm)
KTR18EZPJ111	Rohm Semiconductor	110 Ω	±5%	0.25	1206	±200ppm/°C	Yes	Active	0.65
CRCW1206110RJNEA	Vishay Dale	110 Ω	±5%	0.25	1206	±200ppm/°C	Yes	Active	0.60
ERJ-8GEYJ111V	Panasonic	110 Ω	±5%	0.25	1206	±200ppm/°C	Yes	Not For New Designs	0.70
RMCF1206FT110R	Stackpole Electronics	110 Ω	±1%	0.25	1206	±100ppm/°C	Yes	Active	0.70
CR1206-FX-1100ELF	Bourns Inc.	110 Ω	±1%	0.25	1206	±100ppm/°C	No	Active	0.75
ERJ-8ENF1100V	Panasonic	110 Ω	±1%	0.25	1206	±100ppm/°C	Yes	Not For New Designs	0.70
RC1206FR-07110RL	YAGEO	110 Ω	±1%	0.25	1206	±100ppm/°C	No	Active	0.65
RC1206JR-07110RL	YAGEO	110 Ω	±5%	0.25	1206	±100ppm/°C	No	Active	0.65
CR1206-JW-111ELF	Bourns Inc.	110 Ω	±5%	0.25	1206	±200ppm/°C	No	Active	0.75
ERJ-P08J111V	Panasonic	110 Ω	±5%	0.667	1206	±200ppm/°C	Yes	Active	0.70

Engineering Selection Recommendations

For Direct Replacement (Equivalent Performance): CRCW1206110RJNEA from Vishay Dale is the primary equivalent substitute. It matches all electrical specifications (110 Ohms ±5%, 0.25W), maintains AEC-Q200 automotive qualification, and is in active production status with high inventory availability (17,264 units). Physical height is marginally lower (0.60mm vs 0.65mm), which presents no compatibility issues in standard PCB layouts.

For Automotive New Designs: When AEC-Q200 certification is mandatory, select from CRCW1206110RJNEA, ERJ-P08J111V, or RMCF1206FT110R. All three maintain active production status and automotive qualification. ERJ-P08J111V provides increased power handling (0.667W) if thermal margin is required. RMCF1206FT110R offers tighter tolerance (±1%) with superior temperature coefficient (±100ppm/°C) for precision circuits.

For Precision Applications: RMCF1206FT110R (Stackpole), RC1206FR-07110RL (YAGEO), or ERJ-8ENF1100V (Panasonic) provide ±1% tolerance and ±100ppm/°C temperature coefficient. These specifications reduce circuit drift and improve overall system accuracy. RMCF1206FT110R and ERJ-8ENF1100V retain AEC-Q200 rating for automotive environments.

For Moisture-Resistant Applications: CR1206-FX-1100ELF (Bourns), RC1206FR-07110RL (YAGEO), and RC1206JR-07110RL (YAGEO) feature moisture-resistant thick film construction. These are suitable for high-humidity or corrosive environments where standard thick film resistors may degrade.

Avoid for New Designs: ERJ-8GEYJ111V and ERJ-8ENF1100V carry "Not For New Designs" status. These parts remain available for legacy system support and repair applications only.

Frequently Asked Questions (FAQ)

Q: Can CRCW1206110RJNEA directly replace KTR18EZPJ111 without circuit redesign?

A: Yes. CRCW1206110RJNEA is a direct electrical and mechanical equivalent. Both parts specify 110 Ohms ±5%, 0.25W power rating, 1206 package, and AEC-Q200 automotive qualification. The 0.05mm height difference (0.60mm vs 0.65mm) is within standard PCB assembly tolerances and requires no design modification.

Q: What is the difference between direct substitutes and upgrade substitutes?

A: Direct substitutes match all specifications of the original part. Upgrade substitutes improve specific parameters—typically tolerance (±1% vs ±5%) or temperature coefficient (±100ppm/°C vs ±200ppm/°C)—while maintaining the same resistance value, power rating, and package. Upgrades are backward-compatible but provide enhanced performance.

Q: Is ERJ-P08J111V compatible with circuits designed for KTR18EZPJ111?

A: ERJ-P08J111V is mechanically and electrically compatible for resistance and tolerance specifications. However, it provides higher power rating (0.667W vs 0.25W). This is a safe substitution—the component can handle the same current without degradation. The higher power rating does not create circuit incompatibility.

Q: Why are some parts marked "Not For New Designs"?

A: Parts designated "Not For New Designs" are in mature production phases with limited manufacturing roadmap. Manufacturers recommend these only for legacy system maintenance and repair. For new product development, select parts with "Active" status to ensure long-term supply continuity and access to manufacturing improvements.

Q: Does package height variation affect PCB assembly?

A: Package height variations within the 1206 family (0.60mm to 0.75mm range) are accommodated by standard PCB assembly equipment and solder reflow profiles. These differences do not require design changes or assembly process modifications. Height specifications are provided for reference in space-constrained applications only.

Q: Can I use RC1206JR-07110RL as a substitute if AEC-Q200 is not required?

A: Yes. RC1206JR-07110RL matches the KTR18EZPJ111 in resistance (110 Ohms), tolerance (±5%), power rating (0.25W), and package (1206). It is manufactured by YAGEO with active production status and high inventory. The absence of AEC-Q200 rating is irrelevant for non-automotive applications.

Q: What is the advantage of ±1% tolerance resistors over ±5%?

A: ±1% tolerance resistors reduce circuit parameter drift and improve overall system accuracy. In precision analog circuits, signal conditioning, and measurement applications, tighter tolerance minimizes calibration requirements and improves long-term stability. The trade-off is typically higher component cost.

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