OY221K Equivalent & Substitute Parts

Part Overview

The OY221K is a 220 Ohms ±10% 2W through-hole resistor with axial leads, manufactured by Ohmite. This ceramic composition resistor features moisture-resistant and pulse-withstanding characteristics, designed for applications requiring reliable performance across a wide operating temperature range of -40°C to 220°C. The OY221K is currently classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

OY221K

OhmiteIn Stock: 797OY221K Datasheet

Current PartRFQ

OY221KE

OhmiteIn Stock: 984OY221KE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OY221K is determined by strict equivalence across the following critical parameters:

• Resistance value: 220 Ohms
• Tolerance: ±10%
• Power rating: 2W
• Composition: Ceramic
• Package configuration: Axial with 2 terminations
• Physical dimensions: 0.276" Dia x 0.748" L (7.00mm x 19.00mm)
• Operating temperature range: -40°C ~ 220°C
• Temperature coefficient: -1000 / -1600 ppm/°C
• Features: Moisture Resistant, Pulse Withstanding

The OY221KE qualifies as a direct substitute based on complete alignment with all specified electrical and mechanical parameters. The primary distinction between the main part and its substitute relates to product status and packaging configuration.

Parameter Comparison

Engineering Selection Recommendations

The OY221KE is the direct equivalent substitute for the obsolete OY221K. Both components share identical electrical specifications and physical dimensions, ensuring functional interchangeability in circuit applications.

The OY221KE offers the advantage of active product status, ensuring continued availability and supply chain reliability. Additionally, the OY221KE meets ROHS3 compliance requirements, whereas the OY221K is non-compliant. For new designs or production transitions, the OY221KE is the appropriate selection. The shift from non-specified packaging to bulk packaging in the OY221KE reflects standard industry practice for active product lines.

Frequently Asked Questions (FAQ)

Q: Can the OY221KE be used as a direct replacement for the OY221K in existing designs?

A: Yes. The OY221KE is electrically and mechanically equivalent to the OY221K. All critical parameters—resistance, tolerance, power rating, composition, package type, dimensions, and operating temperature range—are identical. Direct substitution is appropriate for circuit applications.

Q: What is the significance of the product status difference between OY221K and OY221KE?

A: The OY221K is classified as obsolete, indicating discontinued manufacturing and limited availability. The OY221KE maintains active product status, ensuring reliable supply and ongoing manufacturer support. For production continuity, the OY221KE is the recommended choice.

Q: Are there compliance differences between these parts?

A: Yes. The OY221K is RoHS non-compliant, while the OY221KE is ROHS3 compliant. For applications subject to RoHS regulations or customer requirements, the OY221KE satisfies compliance obligations.

Q: Do the physical dimensions remain unchanged between OY221K and OY221KE?

A: Correct. Both components share identical dimensions of 0.276" Dia x 0.748" L (7.00mm x 19.00mm) and axial package configuration. PCB layout and mechanical fit are unchanged.

Q: What packaging format is supplied with the OY221KE?

A: The OY221KE is supplied in bulk packaging, which is standard for active product lines. This differs from the OY221K packaging designation but does not affect electrical or mechanical performance.