OY274K Equivalent & Substitute Parts

Part Overview

The OY274K is a 270 kOhms ±10% 2W through-hole axial resistor manufactured by Ohmite with ceramic composition. This component 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 OY274K is classified as obsolete, making identification of suitable substitutes essential for ongoing design support and component procurement.

Substiute Parts

OY274K

OhmiteIn Stock: 914OY274K Datasheet

Current PartRFQ

OY274KE

OhmiteIn Stock: 1093OY274KE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OY274K is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute must maintain identical specifications for resistance value, tolerance, power rating, composition type, and axial package configuration. Physical dimensions and operating temperature range must match to ensure direct replacement compatibility in existing circuit designs and PCB layouts.

The OY274KE qualifies as a direct substitute based on the following criteria:

• Identical resistance: 270 kOhms
• Identical tolerance: ±10%
• Identical power rating: 2W
• Identical composition: Ceramic
• Identical package: Axial
• Identical operating temperature range: -40°C to 220°C
• Identical temperature coefficient: -1000/-1600 ppm/°C
• Identical physical dimensions: 0.276" Dia × 0.748" L
• Identical features: Moisture Resistant, Pulse Withstanding

Parameter Comparison

Engineering Selection Recommendations

The OY274KE is the direct equivalent substitute for the obsolete OY274K. Both components are manufactured by Ohmite and share identical electrical and mechanical specifications. The primary distinction is product status and regulatory compliance: the OY274K is obsolete, while the OY274KE remains in active production and meets ROHS3 compliance requirements, whereas the OY274K is RoHS non-compliant.

For new designs or component replenishment, the OY274KE should be selected as it provides continued availability and improved regulatory standing. The electrical performance and physical compatibility are equivalent, ensuring direct substitution without circuit redesign.

Frequently Asked Questions (FAQ)

Q: Can the OY274KE directly replace the OY274K in existing assemblies?

A: Yes. The OY274KE is electrically and mechanically identical to the OY274K. All critical parameters—resistance, tolerance, power rating, composition, package type, operating temperature range, and physical dimensions—are equivalent, enabling direct substitution without modification to PCB layouts or circuit designs.

Q: What is the primary reason to substitute the OY274K?

A: The OY274K is classified as obsolete. The OY274KE provides the same functionality with active production status and improved regulatory compliance (ROHS3).

Q: Are there any differences in performance between the OY274K and OY274KE?

A: No performance differences exist. Both components share identical electrical specifications, temperature coefficients, and operating ranges. The OY274KE is the current production equivalent.

Q: Does the OY274KE meet modern regulatory requirements?

A: Yes. The OY274KE is ROHS3 compliant and REACH unaffected, meeting current regulatory standards. The OY274K is RoHS non-compliant.

Q: Are the physical dimensions identical?

A: Yes. Both the OY274K and OY274KE measure 0.276" diameter by 0.748" length (7.00mm × 19.00mm), ensuring identical PCB footprint compatibility.

Q: What is the packaging difference between these parts?

A: The OY274K is supplied in standard packaging, while the OY274KE is supplied in bulk packaging. This does not affect component performance or compatibility.