KTR25JZPJ621 Equivalent & Substitute Parts

Part Overview

The KTR25JZPJ621 is a 620 Ohms ±5% thick film chip resistor manufactured by Rohm Semiconductor, rated for 0.333W (1/3W) power dissipation in a 1210 (3225 Metric) surface mount package. This component is qualified to AEC-Q200 automotive standards and operates across -55°C to 155°C. The part is currently active in production with 1129 units in stock. Equivalent and substitute parts are identified based on matching resistance value, package dimensions, and automotive qualification requirements while allowing for controlled variations in tolerance and power rating specifications.

Substiute Parts

KTR25JZPJ621

Rohm SemiconductorIn Stock: 1178KTR25JZPJ621 Datasheet

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KTR25JZPF6200

Rohm SemiconductorIn Stock: 5305KTR25JZPF6200 Datasheet

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ERJ-14YJ621U

Panasonic Electronic ComponentsIn Stock: 23145ERJ-14YJ621U Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the KTR25JZPJ621 are qualified based on the following criteria:

Primary Matching Parameters:

• Resistance value: 620 Ohms (exact match required)
• Package / Case: 1210 (3225 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Operating temperature range: -55°C ~ 155°C (exact match required)
• Automotive qualification: AEC-Q200 (exact match required)
• RoHS compliance: ROHS3 Compliant (exact match required)

Allowable Variations:

• Tolerance: ±5% or tighter (±1% acceptable as upgrade)
• Power rating: Equal to or greater than 0.333W (0.5W acceptable as upgrade)
• Temperature coefficient: ±200ppm/°C or better (±100ppm/°C acceptable as upgrade)
• Manufacturer: Different manufacturers permitted if all primary parameters match

Parameter Comparison

Engineering Selection Recommendations

KTR25JZPF6200 (Rohm Semiconductor): This substitute offers improved tolerance specification (±1% versus ±5%) and superior temperature coefficient (±100ppm/°C versus ±200ppm/°C) while maintaining identical power rating and package dimensions. Both parts are manufactured by Rohm Semiconductor and carry Active product status. This part is suitable for applications requiring tighter resistance tolerance and improved temperature stability.

ERJ-14YJ621U (Panasonic Electronic Components): This substitute provides increased power rating (0.5W versus 0.333W) in the same 1210 package footprint, offering thermal margin for higher dissipation scenarios. The part maintains ±5% tolerance and ±200ppm/°C temperature coefficient matching the original specification. However, this part carries Not For New Designs status, limiting its suitability for new product development despite higher inventory availability.

Frequently Asked Questions (FAQ)

Q: Can KTR25JZPF6200 be used as a direct replacement for KTR25JZPJ621?

A: Yes. Both parts share identical resistance value (620 Ohms), package dimensions (1210), power rating (0.333W), operating temperature range (-55°C ~ 155°C), and AEC-Q200 automotive qualification. The KTR25JZPF6200 provides tighter tolerance (±1%) and lower temperature coefficient (±100ppm/°C), making it functionally compatible and technically superior for the same application.

Q: Is ERJ-14YJ621U suitable for new designs?

A: ERJ-14YJ621U carries Not For New Designs product status. While it meets all electrical and mechanical compatibility requirements with the KTR25JZPJ621, its discontinued design status makes it unsuitable for new product development. Use KTR25JZPF6200 or KTR25JZPJ621 for new designs.

Q: What are the physical footprint differences between these parts?

A: All three parts use the 1210 (3225 Metric) package with identical length (0.126" / 3.20mm) and width (0.098" / 2.50mm). Maximum seated heights are 0.026" (0.65mm) for KTR25JZPJ621 and KTR25JZPF6200, and 0.028" (0.70mm) for ERJ-14YJ621U. These minimal height variations do not affect PCB layout compatibility.

Q: Why would I choose the higher power rating ERJ-14YJ621U?

A: The ERJ-14YJ621U 0.5W rating provides additional thermal headroom in applications where the original 0.333W specification operates near maximum dissipation limits. This allows for improved reliability margins in high-temperature or high-current environments while maintaining identical electrical characteristics.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. KTR25JZPJ621, KTR25JZPF6200, and ERJ-14YJ621U are all ROHS3 Compliant with Moisture Sensitivity Level 1 (Unlimited), meeting environmental and regulatory requirements for automotive applications.