OX333K Equivalent & Substitute Parts

Part Overview

The OX333K is a 33 kOhms ±10% 1W 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 OX333K is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and procurement continuity.

Substiute Parts

OX333K

OhmiteIn Stock: 1163OX333K Datasheet

Current PartRFQ

OX333KE

OhmiteIn Stock: 1271OX333KE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OX333K is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute component must match the following specifications:

• Resistance value: 33 kOhms
• Tolerance: ±10%
• Power rating: 1W
• Composition: Ceramic
• Package configuration: Axial with 2 terminations
• 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

The OX333KE meets all these criteria and is identified as a direct substitute for the obsolete OX333K.

Parameter Comparison

Engineering Selection Recommendations

The OX333KE is the direct equivalent substitute for the obsolete OX333K. Both components are manufactured by Ohmite within the OX series and maintain 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 components is product status and regulatory compliance. The OX333K is obsolete and RoHS non-compliant, while the OX333KE is an active product with ROHS3 compliance. For new designs or ongoing procurement requirements, the OX333KE is the appropriate selection. The OX333KE provides regulatory compliance alignment with modern manufacturing standards while maintaining full functional and physical compatibility with applications originally specified for the OX333K.

Frequently Asked Questions (FAQ)

Q: Can the OX333KE be used as a direct replacement for the OX333K in existing designs?

A: Yes. The OX333KE is electrically and mechanically identical to the OX333K. Both components share the same resistance value (33 kOhms), tolerance (±10%), power rating (1W), package type (axial), physical dimensions (0.217" Dia x 0.650" L), operating temperature range (-40°C ~ 220°C), and features (moisture resistant, pulse withstanding). Direct substitution is supported without circuit modification.

Q: What is the significance of the RoHS compliance difference between OX333K and OX333KE?

A: The OX333K is RoHS non-compliant, while the OX333KE is ROHS3 compliant. For applications subject to RoHS regulations or procurement policies requiring RoHS compliance, the OX333KE must be selected. The OX333KE meets current environmental and regulatory standards for electronic component manufacturing.

Q: Are the physical dimensions identical between OX333K and OX333KE?

A: Yes. Both components have identical physical dimensions of 0.217" Dia x 0.650" L (5.50mm x 16.50mm). PCB layout, mounting, and mechanical clearance requirements remain unchanged when substituting the OX333KE for the OX333K.

Q: Why is the OX333K listed as obsolete?

A: The OX333K has been discontinued by Ohmite. The OX333KE represents the active product continuation within the OX series, providing equivalent performance with updated regulatory compliance. For procurement of new inventory, the OX333KE should be specified.

Q: Are there any performance differences between OX333K and OX333KE?

A: No. Both components maintain identical electrical performance specifications including temperature coefficient (-1000 / -1600 ppm/°C), operating temperature range (-40°C ~ 220°C), and functional features (moisture resistant, pulse withstanding). Performance is equivalent across all specified parameters.