Ohmite 91J12R Equivalent & Substitute Parts

Part Overview

The Ohmite 91J12R is a 12 Ohm, 1.5W through-hole axial wirewound resistor with ±5% tolerance and flame retardant coating. This component is classified as Active product status and is designed for applications requiring reliable power dissipation in compact form factors. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the same product series, enabling seamless integration in circuit designs where the original part may have limited availability or specific packaging requirements.

Substiute Parts

91J12R

OhmiteIn Stock: 112391J12R Datasheet

Current PartRFQ

91J12RE

OhmiteIn Stock: 86091J12RE Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 91J12R is determined by strict equivalence across the following critical parameters:

• Resistance value: 12 Ohms (exact match required)
• Tolerance: ±5% (exact match required)
• Power rating: 1.5W (exact match required)
• Composition: Wirewound (exact match required)
• Package type: Axial (exact match required)
• Temperature coefficient: ±30ppm/°C (exact match required)
• Physical dimensions: 0.142" Dia x 0.453" L (exact match required)
• Number of terminations: 2 (exact match required)

The substitute part 91J12RE meets all these criteria and belongs to the same Ohmite 90 series. Substitution is valid when all electrical and mechanical parameters align precisely with the main part specification.

Parameter Comparison

Engineering Selection Recommendations

Both the 91J12R and 91J12RE are Active status components from the Ohmite 90 series with identical electrical and mechanical specifications. The primary distinction is regulatory compliance: the 91J12RE carries ROHS3 certification, while the 91J12R is RoHS non-compliant. Selection between these parts should be based on application requirements regarding environmental and regulatory standards. For applications subject to RoHS3 compliance mandates, the 91J12RE is the appropriate selection. For applications without such requirements, either part is electrically and mechanically interchangeable. Both parts are manufactured by Ohmite and maintain the same ECCN and HTSUS classifications.

Frequently Asked Questions (FAQ)

Q: Can the 91J12RE replace the 91J12R in all applications?

A: Yes, from an electrical and mechanical standpoint. The 91J12RE is electrically and mechanically identical to the 91J12R, with the same resistance value, tolerance, power rating, temperature coefficient, and physical dimensions. The primary difference is RoHS3 compliance status. Verify your application's regulatory requirements before selection.

Q: What is the difference between the 91J12R and 91J12RE?

A: Both parts are 12 Ohm, 1.5W wirewound axial resistors with ±5% tolerance from Ohmite's 90 series. The 91J12RE is ROHS3 compliant, while the 91J12R is RoHS non-compliant. All other specifications are identical.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both the 91J12R and 91J12RE have identical dimensions of 0.142" Dia x 0.453" L (3.60mm x 11.50mm), ensuring direct mechanical compatibility in PCB layouts and circuit designs.

Q: What packaging options are available?

A: The 91J12R is available in standard packaging, while the 91J12RE is available in Bulk packaging. Both maintain the same axial component form factor.

Q: Are there any temperature or environmental differences between these parts?

A: No. Both parts have identical temperature coefficients of ±30ppm/°C and identical flame retardant coating and safety features. Environmental performance characteristics are equivalent.