OY390K Equivalent & Substitute Parts

Part Overview

The OY390K is a 39 Ohms ±10% 2W through-hole resistor with axial leads, manufactured by Ohmite. This ceramic composition resistor features moisture resistance and pulse withstanding capabilities, designed for applications requiring reliable performance across a wide operating temperature range of -40°C to 220°C. The OY390K is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and procurement continuity.

Substiute Parts

OY390K

OhmiteIn Stock: 718OY390K Datasheet

Current PartRFQ

OY390KE

OhmiteIn Stock: 7124OY390KE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OY390K is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute component must match the following specifications without deviation:

• Resistance value: 39 Ohms
• Tolerance: ±10%
• Power rating: 2W
• Composition: Ceramic
• Package configuration: Axial with 2 terminations
• Physical dimensions: 0.276" Dia x 0.748" L (7.00mm x 19.00mm)
• Operating temperature range: -40°C ~ 220°C
• Temperature coefficient: -1000 / -1600 ppm/°C
• Features: Moisture Resistant, Pulse Withstanding

The OY390KE meets all these criteria and is classified as an active product, providing a direct functional and mechanical equivalent for the obsolete OY390K.

Parameter Comparison

Engineering Selection Recommendations

The OY390KE is the direct equivalent substitute for the obsolete OY390K. Both components are manufactured by Ohmite within the OY series and share identical electrical specifications, physical dimensions, and performance characteristics. The primary distinction is product status: the OY390K is obsolete while the OY390KE remains in active production.

The OY390KE offers an additional compliance advantage: it is ROHS3 compliant, whereas the OY390K is RoHS non-compliant. For applications subject to RoHS regulations or requiring compliance with current environmental standards, the OY390KE provides both functional equivalence and regulatory alignment.

Procurement of the OY390KE is recommended for all new designs and ongoing production requirements where the OY390K is no longer available.

Frequently Asked Questions (FAQ)

Q: Can the OY390KE be used as a direct replacement for the OY390K in existing designs?

A: Yes. The OY390KE is electrically and mechanically identical to the OY390K. All electrical parameters, physical dimensions, and performance characteristics are equivalent. The components are pin-compatible and footprint-compatible for through-hole PCB applications.

Q: What is the difference between the OY390K and OY390KE?

A: The OY390K is classified as obsolete, while the OY390KE is an active product. The OY390KE is ROHS3 compliant, whereas the OY390K is RoHS non-compliant. All other specifications are identical.

Q: Are there any packaging differences between these components?

A: The OY390K packaging designation is listed as "-" (unspecified), while the OY390KE is supplied in bulk packaging. Both components use the same axial package configuration with identical physical dimensions of 0.276" Dia x 0.748" L (7.00mm x 19.00mm).

Q: What parameters must match for a component to be considered a substitute for the OY390K?

A: A substitute must match all of the following: 39 Ohms resistance, ±10% tolerance, 2W power rating, ceramic composition, axial package type, 0.276" Dia x 0.748" L dimensions, -40°C to 220°C operating temperature range, -1000 / -1600 ppm/°C temperature coefficient, and moisture resistant, pulse withstanding features.

Q: Is the OY390KE suitable for applications requiring RoHS compliance?

A: Yes. The OY390KE is ROHS3 compliant and is suitable for applications subject to RoHS regulations. The OY390K is RoHS non-compliant.