OY391KE Equivalent & Substitute Parts

Part Overview

The OY391KE is a 390 Ohms ±10% 2W through-hole resistor in axial configuration manufactured by Ohmite. This ceramic composition resistor features moisture resistance and pulse withstanding capability, designed for applications requiring reliable performance across a wide operating temperature range from -40°C to 220°C. The part is currently active in production with ROHS3 compliance and is available in bulk packaging. Substitute parts may be required due to inventory constraints, packaging format needs, or specific application requirements such as extended temperature range or alternative power ratings.

Substiute Parts

OY391KE

OhmiteIn Stock: 1049OY391KE Datasheet

Current PartRFQ

OC2K391E-TR

OhmiteIn Stock: 1529OC2K391E-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the OY391KE is determined by the following critical parameters:

• Resistance Value: Must be 390 Ohms ±10%
• Tolerance: Must be ±10%
• Composition: Must be ceramic
• Package Configuration: Must be axial through-hole
• Termination Count: Must have 2 terminations
• Compliance: Must maintain ROHS3 compliance

The OC2K391E-TR qualifies as a manufacturer-recommended substitute based on matching resistance, tolerance, composition, and package type. While the power rating differs (1.7W versus 2W), the substitute maintains ceramic composition and axial configuration with equivalent electrical characteristics for the specified resistance value.

Parameter Comparison

Engineering Selection Recommendations

Both the OY391KE and OC2K391E-TR are active production parts with ROHS3 compliance and REACH unaffected status. Selection between these parts should be based on application-specific requirements:

The OY391KE provides a 2W power rating with moisture resistance and operates from -40°C to 220°C. The OC2K391E-TR offers an extended lower temperature limit (-55°C) and upper temperature limit (230°C) with a 1.7W power rating and high voltage capability. Both parts maintain identical resistance and tolerance specifications with ceramic composition and axial configuration. The choice between these parts depends on whether the application requires the higher power dissipation capability of the OY391KE or the extended temperature range and high voltage features of the OC2K391E-TR.

Frequently Asked Questions (FAQ)

Q: Can the OC2K391E-TR replace the OY391KE in all applications?

A: The OC2K391E-TR matches the OY391KE in resistance value, tolerance, composition, and package type. However, the power rating differs (1.7W versus 2W). Applications requiring the full 2W dissipation capability should use the OY391KE. Applications operating within the 1.7W limit can use the substitute.

Q: What is the difference in packaging between these parts?

A: The OY391KE is supplied in bulk packaging, while the OC2K391E-TR is supplied in cut tape (CT) format. Both are axial through-hole components with identical electrical specifications for the 390 Ohm resistance value.

Q: Are both parts compliant with environmental regulations?

A: Yes. Both the OY391KE and OC2K391E-TR are ROHS3 compliant and REACH unaffected, meeting current environmental standards for electronic components.

Q: Does the OC2K391E-TR support the full operating temperature range of the OY391KE?

A: The OC2K391E-TR actually extends the operating temperature range to -55°C ~ 230°C compared to the OY391KE range of -40°C ~ 220°C. Applications requiring operation at the lower or upper temperature extremes of the OY391KE specification are supported by the substitute.