OY221KE Equivalent & Substitute Parts

Part Overview

The OY221KE is a 220 Ohms ±10% 2W through-hole resistor in axial configuration manufactured by Ohmite. This ceramic composition resistor features moisture resistance and pulse withstanding capability, designed for applications requiring reliable performance across a wide operating temperature range from -40°C to 220°C. The part maintains Active product status with 894 units currently in stock. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are required due to inventory constraints, application-specific requirements, or design optimization needs.

Substiute Parts

OY221KE

OhmiteIn Stock: 984OY221KE Datasheet

Current PartRFQ

OC2K221E-TR

OhmiteIn Stock: 1691OC2K221E-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the OY221KE is determined by the following critical parameters:

• Resistance value: 220 Ohms (exact match required)
• Tolerance: ±10% (exact match required)
• Composition: Ceramic (exact match required)
• Package configuration: Axial through-hole (exact match required)
• Power rating: Minimum 1.7W (acceptable for applications not requiring full 2W capacity)
• Operating temperature range: Must encompass or exceed -40°C to 220°C
• RoHS compliance: ROHS3 Compliant (regulatory requirement maintained)

The OC2K221E-TR qualifies as a substitute based on matching resistance, tolerance, composition, and axial package type. While the power rating is reduced to 1.7W, this remains within acceptable substitution parameters for circuits designed for the OY221KE specification.

Parameter Comparison

Engineering Selection Recommendations

Both the OY221KE and OC2K221E-TR maintain Active product status and full ROHS3 compliance with REACH unaffected designation, ensuring regulatory alignment for current applications. The OC2K221E-TR provides an extended operating temperature range (-55°C to 230°C versus -40°C to 220°C), offering broader environmental capability. The substitute part's 1.7W power rating remains suitable for circuits where thermal dissipation does not exceed this threshold. Physical dimension variance (0.311" diameter versus 0.276" diameter) requires verification for PCB layout compatibility. Both parts are ceramic composition with pulse withstanding characteristics, maintaining functional equivalence in pulse-sensitive applications.

Frequently Asked Questions (FAQ)

Q: Can the OC2K221E-TR replace the OY221KE in all applications?

A: The OC2K221E-TR is electrically equivalent in resistance, tolerance, and composition. Substitution is valid when circuit power dissipation does not exceed 1.7W and PCB layout accommodates the slightly larger 0.311" diameter. Verify thermal requirements before substitution.

Q: What is the primary difference between these two parts?

A: The main differences are power rating (2W versus 1.7W) and physical diameter (7.00mm versus 7.90mm). Both maintain identical resistance, tolerance, and ceramic composition with axial configuration.

Q: Are both parts suitable for high-temperature applications?

A: Yes. The OY221KE operates to 220°C, while the OC2K221E-TR extends to 230°C. Both support the specified operating range with appropriate thermal management.

Q: Does packaging format affect electrical performance?

A: No. The OY221KE is supplied in Bulk packaging while the OC2K221E-TR uses Cut Tape (CT) format. Electrical and mechanical specifications remain identical regardless of packaging format.

Q: Are both parts RoHS compliant?

A: Yes. Both the OY221KE and OC2K221E-TR are ROHS3 Compliant with REACH Unaffected status, meeting current regulatory requirements.