OX271K Equivalent & Substitute Parts

Part Overview

The OX271K is a 270 Ohms ±10% 1W through-hole resistor in axial configuration, 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 OX271K is currently classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

OX271K

OhmiteIn Stock: 1038OX271K Datasheet

Current PartRFQ

OX271KE

OhmiteIn Stock: 1028OX271KE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OX271K is determined by strict equivalence across the following critical parameters:

• Resistance Value: 270 Ohms (exact match required)
• Tolerance: ±10% (exact match required)
• Power Rating: 1W (exact match required)
• Composition: Ceramic (exact match required)
• Package Configuration: Axial through-hole (exact match required)
• Physical Dimensions: 0.217" Dia x 0.650" L (exact match required)
• Operating Temperature Range: -40°C ~ 220°C (exact match required)
• Temperature Coefficient: -1000 / -1600 ppm/°C (exact match required)
• Features: Moisture Resistant, Pulse Withstanding (exact match required)

The OX271KE qualifies as a direct substitute based on complete alignment with all specified electrical and mechanical parameters. The primary distinction is product status and compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The OX271KE is the direct equivalent substitute for the obsolete OX271K. Both components are manufactured by Ohmite and share identical electrical specifications, ceramic composition, axial package configuration, and physical dimensions. The OX271KE maintains full compatibility with circuit designs originally specified for the OX271K.

The OX271KE offers the advantage of active product status, ensuring continued availability and supply chain reliability. Additionally, the OX271KE achieves ROHS3 compliance, whereas the OX271K is RoHS non-compliant. This compliance improvement supports modern manufacturing standards and regulatory requirements without altering the component's functional performance.

Selection of the OX271KE is appropriate for new designs, production continuity, and retrofit applications where the OX271K is no longer available.

Frequently Asked Questions (FAQ)

Q: Can the OX271KE be used as a direct replacement for the OX271K in existing circuit designs?

A: Yes. The OX271KE is electrically and mechanically identical to the OX271K. All electrical parameters, physical dimensions, and performance characteristics are equivalent. Direct substitution is supported without circuit modification.

Q: What is the primary reason for substituting the OX271K?

A: The OX271K is classified as obsolete. The OX271KE is the active equivalent from the same manufacturer, ensuring continued component availability and supply chain support.

Q: Are there any compliance differences between the OX271K and OX271KE?

A: Yes. The OX271KE is ROHS3 compliant, while the OX271K is RoHS non-compliant. This represents an improvement in regulatory compliance. Both components maintain identical electrical and thermal performance.

Q: Do the OX271K and OX271KE have the same physical dimensions?

A: Yes. Both components measure 0.217" Dia x 0.650" L (5.50mm x 16.50mm) and use identical axial through-hole packaging. PCB layout and mechanical fit are unchanged.

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

A: Both the OX271K and OX271KE operate across -40°C to 220°C, with a temperature coefficient of -1000 / -1600 ppm/°C.

Q: Are moisture resistance and pulse withstanding characteristics maintained in the substitute?

A: Yes. The OX271KE retains all performance features of the OX271K, including moisture resistance and pulse withstanding capability.