KTR18EZPJ511 Equivalent & Substitute Parts

Part Overview

The KTR18EZPJ511 is a 510 Ohm ±5% 0.25W thick film chip resistor in 1206 (3216 Metric) package manufactured by Rohm Semiconductor. This automotive-grade component features AEC-Q200 certification and high voltage capability, designed for demanding automotive and industrial applications operating across -55°C to 155°C. The part is currently active in production with 931 units in stock. Equivalent and substitute parts are identified to support design flexibility, procurement alternatives, and supply chain continuity while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Resistance	510 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

Substitute parts for the KTR18EZPJ511 are classified based on the following substitution criteria:

Direct Equivalents maintain all critical parameters: 510 Ohm resistance, ±5% tolerance, 0.25W power rating, 1206 package, thick film composition, -55°C to 155°C operating range, and AEC-Q200 automotive certification. These parts are pin-compatible and functionally interchangeable without circuit modification.

Tolerance Upgrades increase tolerance from ±5% to ±1% while maintaining all other parameters including resistance value, power rating, package, and operating temperature range. These parts provide improved accuracy for applications requiring tighter component tolerances.

Power Rating Upgrades increase power dissipation capability from 0.25W to 0.5W while maintaining 510 Ohm resistance, ±5% tolerance, 1206 package, and operating temperature range. These parts accommodate higher current or power dissipation requirements.

Manufacturer Alternatives provide equivalent specifications from different manufacturers, enabling supply chain flexibility and procurement optimization while maintaining identical electrical and mechanical performance.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Package	AEC-Q200	Status
KTR18EZPJ511	Rohm Semiconductor	510Ω	±5%	0.25	±200	1206	Yes	Active
KTR18EZPF5100	Rohm Semiconductor	510Ω	±1%	0.25	±100	1206	Yes	Active
ESR18EZPJ511	Rohm Semiconductor	510Ω	±5%	0.5	±200	1206	Yes	Active
CRCW1206510RJNEA	Vishay Dale	510Ω	±5%	0.25	±200	1206	Yes	Active
ERJ-8GEYJ511V	Panasonic Electronic Components	510Ω	±5%	0.25	±200	1206	Yes	Not For New Designs
RMCF1206JT510R	Stackpole Electronics Inc	510Ω	±5%	0.25	±200	1206	Yes	Active
CR1206-FX-5100ELF	Bourns Inc.	510Ω	±1%	0.25	±100	1206	No	Active
ERJ-8ENF5100V	Panasonic Electronic Components	510Ω	±1%	0.25	±100	1206	Yes	Not For New Designs
RC1206FR-07510RL	YAGEO	510Ω	±1%	0.25	±100	1206	No	Active
RC1206JR-07510RL	YAGEO	510Ω	±5%	0.25	±100	1206	No	Active
RC3216F511CS	Samsung Electro-Mechanics	510Ω	±1%	0.25	±100	1206	No	Active

Engineering Selection Recommendations

For Automotive Applications with AEC-Q200 Requirement: Select from CRCW1206510RJNEA (Vishay Dale), RMCF1206JT510R (Stackpole Electronics), or KTR18EZPF5100 (Rohm Semiconductor tolerance upgrade). All maintain AEC-Q200 certification and active production status. ERJ-8GEYJ511V and ERJ-8ENF5100V carry "Not For New Designs" status and should be avoided for new development.

For Tolerance-Critical Circuits: KTR18EZPF5100, CR1206-FX-5100ELF, ERJ-8ENF5100V, RC1206FR-07510RL, and RC3216F511CS provide ±1% tolerance with reduced temperature coefficient (±100ppm/°C) compared to the ±5% base specification.

For Higher Power Dissipation: ESR18EZPJ511 (Rohm Semiconductor) doubles the power rating to 0.5W while maintaining all other parameters and AEC-Q200 certification.

For Non-Automotive Applications: CR1206-FX-5100ELF (Bourns), RC1206FR-07510RL (YAGEO), RC1206JR-07510RL (YAGEO), and RC3216F511CS (Samsung) are suitable alternatives without AEC-Q200 requirement, offering active production status and ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can I substitute KTR18EZPJ511 with any 510 Ohm 1206 resistor?

A: No. Direct substitution requires matching resistance (510Ω), tolerance (±5%), power rating (0.25W), package (1206), and operating temperature range (-55°C to 155°C). For automotive applications, AEC-Q200 certification is mandatory. CRCW1206510RJNEA, RMCF1206JT510R, and ERJ-8GEYJ511V meet these criteria.

Q: What is the difference between tolerance upgrades and direct equivalents?

A: Direct equivalents maintain ±5% tolerance and ±200ppm/°C temperature coefficient. Tolerance upgrades (KTR18EZPF5100, ERJ-8ENF5100V, RC1206FR-07510RL) provide ±1% tolerance and ±100ppm/°C temperature coefficient, improving accuracy for precision circuits. Both are electrically compatible; tolerance upgrades are selected only when tighter component tolerances are required.

Q: Is ESR18EZPJ511 a direct substitute?

A: No. ESR18EZPJ511 is a power rating upgrade, increasing from 0.25W to 0.5W. It maintains 510Ω resistance, ±5% tolerance, 1206 package, and AEC-Q200 certification. Use this part only when higher power dissipation capability is needed.

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

A: ERJ-8GEYJ511V and ERJ-8ENF5100V carry this status, indicating the manufacturer is phasing out these products. While functionally equivalent, they should not be selected for new circuit designs. Active alternatives include CRCW1206510RJNEA, RMCF1206JT510R, and KTR18EZPF5100.

Q: Can I use non-AEC-Q200 parts in automotive circuits?

A: No. Automotive applications require AEC-Q200 certification per design specifications. CR1206-FX-5100ELF, RC1206FR-07510RL, RC1206JR-07510RL, and RC3216F511CS lack this certification and are suitable only for industrial or consumer applications.

Q: What is the physical difference between substitute parts?

A: All parts share the 1206 (3216 Metric) package with identical length (0.126") and width (0.063"). Height varies slightly: KTR18EZPJ511 and CRCW1206510RJNEA measure 0.026" (0.65mm), while RMCF1206JT510R and ERJ-8ENF5100V measure 0.028" (0.70mm). These variations are within standard PCB assembly tolerances and do not affect interchangeability.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with standard manufacturing and storage conditions.

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