OY122K Equivalent & Substitute Parts

Part Overview

The OY122K is a 1.2 kOhms ±10% 2W axial through-hole resistor manufactured by Ohmite, featuring ceramic composition with moisture-resistant and pulse-withstanding characteristics. This component is classified as obsolete, making identification of suitable substitutes essential for ongoing design support and procurement planning. The OY122K operates across a temperature range of -40°C to 220°C and is suitable for applications requiring reliable ceramic resistor performance in harsh environments.

Substiute Parts

OY122K

OhmiteIn Stock: 1083OY122K Datasheet

Current PartRFQ

OY122KE

OhmiteIn Stock: 1623OY122KE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OY122K is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part OY122KE maintains identical specifications for resistance value, tolerance, power rating, ceramic composition, axial package configuration, moisture-resistant and pulse-withstanding features, temperature coefficient range, operating temperature limits, and physical dimensions. These parameters define the functional interchangeability of the OY122KE as a direct substitute for the OY122K in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

The OY122KE serves as the direct functional equivalent to the obsolete OY122K. Both components are manufactured by Ohmite and share identical electrical and mechanical specifications across all critical parameters. The primary distinction is product status: the OY122K is obsolete while the OY122KE is active in production. Additionally, the OY122KE achieves ROHS3 compliance, whereas the OY122K is RoHS non-compliant. For new designs or ongoing procurement requirements, the OY122KE is the appropriate selection due to its active product status and enhanced regulatory compliance posture.

Frequently Asked Questions (FAQ)

Q: Can the OY122KE be used as a direct replacement for the OY122K? A: Yes. The OY122KE is electrically and mechanically identical to the OY122K across all specified parameters, including resistance value, tolerance, power rating, composition, package type, temperature range, and physical dimensions.

Q: What is the primary reason to transition from OY122K to OY122KE? A: The OY122K is classified as obsolete, making the OY122KE the active production equivalent. The OY122KE also provides ROHS3 compliance, addressing regulatory requirements for new applications.

Q: Are there any dimensional differences between these parts? A: No. Both the OY122K and OY122KE share identical physical dimensions of 0.276" diameter by 0.748" length (7.00mm × 19.00mm), ensuring compatibility in existing PCB layouts and mechanical assemblies.

Q: Do both parts operate across the same temperature range? A: Yes. Both components operate from -40°C to 220°C with identical temperature coefficients of -1000/-1600 ppm/°C.

Q: What packaging options are available? A: The OY122K is available in standard packaging, while the OY122KE is supplied in bulk packaging. Both maintain the axial through-hole configuration.