OA150KE Equivalent & Substitute Parts

Part Overview

The OA150KE is a 15 Ohm, 1W axial through-hole resistor manufactured by Ohmite as part of the Little Demon® OA series. This carbon composition resistor features pulse withstanding capability and is rated for ±10% tolerance. The product is currently obsolete, making identification of suitable equivalent parts essential for ongoing maintenance, repair, and legacy system support.

Substiute Parts

OA150KE

OhmiteIn Stock: 803OA150KE Datasheet

Current PartRFQ

OX150KE

OhmiteIn Stock: 1438OX150KE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The OA150KE can be substituted with the OX150KE based on the following matching electrical and mechanical parameters:

• Resistance value: 15 Ohms (identical)
• Tolerance: ±10% (identical)
• Power rating: 1W (identical)
• Package configuration: Axial through-hole (identical)
• Number of terminations: 2 (identical)
• Pulse withstanding capability: Present in both designs

The OX150KE represents an active product alternative with enhanced specifications, including moisture resistance and ceramic composition, while maintaining full compatibility with the original electrical requirements and physical form factor.

Parameter Comparison

Engineering Selection Recommendations

The OX150KE is the direct equivalent for OA150KE applications. Both parts share identical electrical specifications (15 Ohms, ±10%, 1W) and axial through-hole packaging, ensuring mechanical and electrical compatibility in circuit designs.

The OX150KE offers advantages as an active product: it is currently manufactured and stocked, carries ROHS3 compliance certification, and incorporates ceramic composition with moisture resistance. These characteristics provide improved long-term availability and environmental compliance for new designs and legacy system replacements.

Physical dimensions differ slightly between the two parts. The OX150KE measures 0.217" diameter by 0.650" length, compared to the OA150KE at 0.236" diameter by 0.591" length. These dimensional variations remain within typical PCB layout tolerances for axial component placement and do not affect electrical performance.

Frequently Asked Questions (FAQ)

Q: Can the OX150KE directly replace the OA150KE in existing circuits?

A: Yes. Both resistors share identical electrical specifications: 15 Ohms resistance, ±10% tolerance, and 1W power rating. The axial through-hole package configuration is identical, and both feature pulse withstanding capability. Physical dimensions vary slightly but remain compatible with standard PCB layouts designed for axial components.

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

A: The OA150KE uses carbon composition construction, while the OX150KE uses ceramic composition. The OX150KE adds moisture resistance and is an active product with current manufacturing support. The OA150KE is obsolete.

Q: Are there any compliance differences between the OA150KE and OX150KE?

A: The OX150KE is ROHS3 compliant. Compliance status for the OA150KE is not specified in available documentation.

Q: Do the dimensional differences between these parts affect PCB compatibility?

A: The OX150KE (0.217" Dia x 0.650" L) and OA150KE (0.236" Dia x 0.591" L) have minor dimensional variations. Both fit standard axial component footprints on PCBs. Verify clearance in space-constrained layouts, though typical PCB designs accommodate this variation without modification.

Q: What is the operating temperature range for each part?

A: The OX150KE operates from -40°C to 220°C with a temperature coefficient of -1000 / -1600ppm/°C. Operating temperature specifications for the OA150KE are not provided in available documentation.