KTR18EZPJ435 Equivalent & Substitute Parts

Part Overview

The KTR18EZPJ435 is a 4.3 MOhms ±5% thick film chip resistor manufactured by Rohm Semiconductor in 1206 (3216 Metric) package format. This component is rated for 0.25W (1/4W) power dissipation and meets automotive AEC-Q200 qualification standards with high voltage capability. The part is active in production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Equivalent and substitute parts are identified when design requirements allow tolerance relaxation, manufacturer substitution, or feature variation while maintaining core electrical and mechanical compatibility within the 1206 package footprint and 4.3 MOhms resistance specification.

Key Parameters

Parameter	Value
Resistance	4.3 MOhms
Tolerance	±5%
Power Rating	0.25W (1/4W)
Package / Case	1206 (3216 Metric)
Composition	Thick Film
Operating Temperature Range	-55°C ~ 155°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the KTR18EZPJ435 are classified into two categories based on parameter compatibility:

Upgrade Substitutes maintain all core electrical parameters (4.3 MOhms resistance, 0.25W power rating, 1206 package, thick film composition, -55°C ~ 155°C operating range, ROHS3 compliance) while offering improved tolerance specifications or alternative manufacturer sourcing. These parts are direct functional replacements with enhanced precision or equivalent performance characteristics.

Similar Substitutes maintain all core electrical and mechanical parameters but may originate from different manufacturers with equivalent AEC-Q200 automotive qualification. These parts satisfy the same design requirements and package constraints.

Key parameters determining substitution eligibility:

Resistance value: 4.3 MOhms (fixed)
Package format: 1206 (3216 Metric) (fixed)
Power rating: 0.25W (1/4W) (fixed)
Composition: Thick Film (fixed)
Operating temperature: -55°C ~ 155°C (fixed)
Tolerance: ±5% or tighter (variable)
Manufacturer: Rohm Semiconductor, Vishay Dale, YAGEO, Stackpole Electronics Inc (variable)

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff (ppm/°C)	Operating Temp (°C)	Features	RoHS Status
KTR18EZPJ435	Rohm Semiconductor	4.3 MOhms	±5%	0.25	1206	±200	-55 ~ 155	Automotive AEC-Q200, High Voltage	ROHS3
KTR18EZPF4304	Rohm Semiconductor	4.3 MOhms	±1%	0.25	1206	±100	-55 ~ 155	Automotive AEC-Q200, High Voltage	ROHS3
CRCW12064M30JNEA	Vishay Dale	4.3 MOhms	±5%	0.25	1206	±200	-55 ~ 155	Automotive AEC-Q200	ROHS3
RC1206FR-074M3L	YAGEO	4.3 MOhms	±1%	0.25	1206	±100	-55 ~ 155	Moisture Resistant	ROHS3
RC1206JR-074M3L	YAGEO	4.3 MOhms	±5%	0.25	1206	±100	-55 ~ 155	Moisture Resistant	ROHS3
RMCF1206JT4M30	Stackpole Electronics Inc	4.3 MOhms	±5%	0.25	1206	±200	-55 ~ 155	Automotive AEC-Q200	ROHS3

Engineering Selection Recommendations

All listed substitute parts maintain active production status and ROHS3 compliance, ensuring long-term availability and regulatory conformance equivalent to the KTR18EZPJ435.

For applications requiring automotive AEC-Q200 qualification with high voltage performance characteristics, KTR18EZPF4304 (Rohm Semiconductor, ±1% tolerance) and RMCF1206JT4M30 (Stackpole Electronics Inc, ±5% tolerance) provide direct functional equivalence with the same manufacturer series continuity or alternative qualified sourcing.

For applications where tolerance relaxation to ±5% is acceptable and manufacturer diversification is preferred, CRCW12064M30JNEA (Vishay Dale) provides equivalent electrical performance with established automotive qualification.

For applications where moisture resistance is a design requirement, RC1206FR-074M3L (YAGEO, ±1% tolerance) and RC1206JR-074M3L (YAGEO, ±5% tolerance) offer moisture-resistant thick film construction while maintaining all core electrical and thermal specifications.

Frequently Asked Questions (FAQ)

Q: Can KTR18EZPF4304 replace KTR18EZPJ435 in all applications?

A: KTR18EZPF4304 is a direct upgrade substitute with identical electrical specifications except for improved tolerance (±1% versus ±5%) and lower temperature coefficient (±100ppm/°C versus ±200ppm/°C). It is compatible with all applications designed for KTR18EZPJ435 and provides enhanced precision performance.

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

A: Upgrade substitutes offer improved specifications (tighter tolerance, lower temperature coefficient) from the same or different manufacturers while maintaining core parameters. Similar substitutes maintain identical specifications but originate from alternative manufacturers with equivalent certifications.

Q: Are all substitute parts automotive AEC-Q200 qualified?

A: KTR18EZPF4304, CRCW12064M30JNEA, and RMCF1206JT4M30 carry AEC-Q200 automotive qualification. RC1206FR-074M3L and RC1206JR-074M3L do not list AEC-Q200 rating but feature moisture-resistant construction. Verify automotive qualification requirements for your specific application.

Q: Can I use YAGEO RC1206 series parts in place of Rohm KTR series?

A: RC1206FR-074M3L and RC1206JR-074M3L are mechanically and electrically compatible within the 1206 package format and 4.3 MOhms specification. However, they lack AEC-Q200 automotive qualification. Use only in non-automotive applications or where moisture resistance is prioritized over automotive certification.

Q: What is the impact of tolerance differences on circuit performance?

A: The KTR18EZPJ435 specifies ±5% tolerance, resulting in a resistance range of 4.085 to 4.515 MOhms. Upgrade substitutes with ±1% tolerance narrow this range to 4.257 to 4.343 MOhms, providing improved circuit stability and predictability in precision applications. Select based on circuit tolerance requirements.

Q: Are all parts ROHS3 compliant?

A: All listed substitute parts carry ROHS3 compliance status, ensuring regulatory conformance for EU and equivalent markets.

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