OX123K Equivalent & Substitute Parts

Part Overview

The OX123K is a 12 kOhms ±10% 1W through-hole axial resistor manufactured by Ohmite with ceramic composition, moisture-resistant and pulse-withstanding characteristics. The part is currently obsolete, making identification of equivalent substitutes necessary for ongoing maintenance, repair, and legacy system support. The OX123KE serves as the direct equivalent, offering identical electrical and mechanical specifications while maintaining active product status.

Substiute Parts

OX123K

OhmiteIn Stock: 861OX123K Datasheet

Current PartRFQ

OX123KE

OhmiteIn Stock: 722OX123KE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The OX123KE qualifies as a direct substitute for the OX123K based on matching electrical and mechanical parameters. Substitution criteria are determined by the following parameters:

• Resistance value: 12 kOhms (identical)
• Tolerance: ±10% (identical)
• Power rating: 1W (identical)
• Composition: Ceramic (identical)
• Package type: Axial (identical)
• Temperature coefficient: -1000/-1600 ppm/°C (identical)
• Operating temperature range: -40°C to 220°C (identical)
• Physical dimensions: 0.217" Dia × 0.650" L (identical)
• Termination count: 2 (identical)
• Features: Moisture Resistant, Pulse Withstanding (identical)

All critical electrical and mechanical parameters align, establishing full functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

The OX123KE is the appropriate substitute for the obsolete OX123K. Both parts share identical electrical specifications and mechanical form factors, ensuring direct pin-for-pin and functional compatibility. The OX123KE maintains active product status, providing supply chain continuity for new designs and replacement applications.

The OX123KE offers improved regulatory compliance, achieving ROHS3 certification compared to the OX123K's non-compliant status. This distinction is relevant for applications subject to RoHS directives and environmental regulations. Both parts carry identical ECCN (EAR99) and HTSUS (8533.21.0090) classifications.

Selection between these parts depends on application requirements and regulatory constraints. For legacy system maintenance where RoHS compliance is not mandated, either part is functionally equivalent. For new designs or regulated applications, the OX123KE is the preferred choice due to active availability and compliance status.

Frequently Asked Questions (FAQ)

Q: Can the OX123KE replace the OX123K in existing circuits?

A: Yes. The OX123KE is a direct functional equivalent with identical resistance, tolerance, power rating, temperature coefficient, operating temperature range, and physical dimensions. Pin-for-pin and circuit-level compatibility is established.

Q: What is the primary difference between OX123K and OX123KE?

A: The OX123K is obsolete with RoHS non-compliant status, while the OX123KE is an active product with ROHS3 compliance. Electrical and mechanical specifications are identical.

Q: Are there packaging differences between OX123K and OX123KE?

A: The OX123K is supplied in standard packaging, while the OX123KE is supplied in bulk packaging. Both maintain identical axial form factors and physical dimensions (0.217" Dia × 0.650" L).

Q: Does the OX123KE meet RoHS requirements?

A: Yes. The OX123KE is ROHS3 compliant. The OX123K is RoHS non-compliant. This distinction is relevant for applications subject to RoHS directives.

Q: Are the temperature coefficients identical?

A: Yes. Both parts specify -1000/-1600 ppm/°C temperature coefficient and operate across the identical -40°C to 220°C temperature range.

Q: What certifications apply to both parts?

A: Both parts carry EAR99 ECCN classification and 8533.21.0090 HTSUS code. The OX123KE additionally carries ROHS3 compliance certification.