OX393K Equivalent & Substitute Parts

Part Overview

The OX393K is a 39 kOhms ±10% 1W through-hole resistor in axial package manufactured by Ohmite. This ceramic composition resistor features moisture resistance and pulse withstanding capabilities, with an operating temperature range of -40°C to 220°C. The OX393K is currently listed as obsolete, making identification of suitable substitute parts essential for ongoing design support and component procurement.

Substiute Parts

OX393K

OhmiteIn Stock: 914OX393K Datasheet

Current PartRFQ

OX393KE

OhmiteIn Stock: 2832OX393KE Datasheet

DirectRFQ

OX393K

OhmiteIn Stock: 914OX393K Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the OX393K is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part must match the following criteria:

• Resistance value: 39 kOhms
• Tolerance: ±10%
• Power rating: 1W
• Composition: Ceramic
• Package: Axial
• Physical dimensions: 0.217" Dia x 0.650" L (5.50mm x 16.50mm)
• Operating temperature range: -40°C ~ 220°C
• Temperature coefficient: -1000 / -1600 ppm/°C
• Features: Moisture Resistant, Pulse Withstanding
• Terminations: 2

The OX393KE meets all these parameters and is classified as a direct manufacturer equivalent from Ohmite's OX series.

Parameter Comparison

Engineering Selection Recommendations

The OX393KE is the direct substitute for the obsolete OX393K. Both parts are manufactured by Ohmite and share identical electrical and mechanical specifications across all critical parameters including resistance, tolerance, power rating, package dimensions, and operating temperature range.

The primary distinction between the two parts is product status and compliance certification. The OX393K is obsolete, while the OX393KE is active and carries ROHS3 compliance certification. For new designs or ongoing production requiring RoHS compliance, the OX393KE is the appropriate selection. The OX393KE also demonstrates higher inventory availability, supporting supply chain continuity.

Both parts are classified under ECCN EAR99 and HTSUS 8533.21.0090, with identical REACH status.

Frequently Asked Questions (FAQ)

Q: Can the OX393KE directly replace the OX393K in existing designs?

A: Yes. The OX393KE is electrically and mechanically identical to the OX393K. All critical parameters including resistance value, tolerance, power rating, package type, and physical dimensions are equivalent. Direct substitution is supported without circuit modification.

Q: What is the primary reason to transition from OX393K to OX393KE?

A: The OX393K is obsolete. The OX393KE is the active equivalent from Ohmite's OX series and maintains full parametric compatibility while offering ROHS3 compliance certification and superior inventory availability.

Q: Are there any packaging differences between OX393K and OX393KE?

A: Both parts use identical axial package configuration with dimensions of 0.217" Dia x 0.650" L (5.50mm x 16.50mm). The OX393KE is supplied in bulk packaging, while the OX393K packaging designation is not specified. This does not affect electrical or mechanical compatibility.

Q: What is the operating temperature range for these resistors?

A: Both the OX393K and OX393KE operate across -40°C to 220°C with a temperature coefficient of -1000 / -1600 ppm/°C.

Q: Are these resistors RoHS compliant?

A: The OX393K is RoHS non-compliant. The OX393KE is ROHS3 compliant. For applications requiring RoHS certification, the OX393KE is the appropriate selection.