Ohmite 90J39R Equivalent & Substitute Parts

Part Overview

The Ohmite 90J39R is a 39 Ohm, 11W wirewound axial resistor with ±5% tolerance and flame retardant coating for safety applications. This component is classified as Active product status and is designed for through-hole mounting in electronic circuits requiring high power dissipation and reliable performance in demanding environments. Substitute parts are identified when inventory constraints, regional availability, or compliance requirements necessitate alternative sourcing while maintaining identical electrical and mechanical specifications.

Substiute Parts

90J39R

OhmiteIn Stock: 111990J39R Datasheet

Current PartRFQ

90J39RE

OhmiteIn Stock: 68890J39RE Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The Ohmite 90J39RE qualifies as a parametric equivalent to the 90J39R based on the following critical substitution criteria:

• Identical resistance value: 39 Ohms
• Matching tolerance: ±5%
• Equivalent power rating: 11W
• Same composition: Wirewound
• Identical package configuration: Axial
• Matching temperature coefficient: ±30ppm/°C
• Identical physical dimensions: 0.343" Dia x 1.811" L (8.70mm x 46.00mm)
• Same number of terminations: 2
• Identical features: Flame Retardant Coating, Safety

Both parts belong to the Ohmite 90 series and maintain full electrical and mechanical compatibility for direct substitution in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both the 90J39R and 90J39RE are Active status components suitable for production use. The 90J39RE offers improved compliance posture with RoHS Compliant certification, whereas the 90J39R is RoHS non-compliant. Selection between these parts depends on regulatory and environmental compliance requirements of the end application. For applications requiring RoHS compliance, the 90J39RE is the appropriate choice. For applications without RoHS mandates, either part provides equivalent electrical and mechanical performance. Both components maintain identical electrical characteristics and physical form factors, ensuring direct substitution capability in circuit designs.

Frequently Asked Questions (FAQ)

Q: Can the 90J39RE directly replace the 90J39R in existing designs?

A: Yes. Both parts share identical electrical specifications (39 Ohms, ±5%, 11W), composition (wirewound), package type (axial), and physical dimensions (0.343" Dia x 1.811" L). Direct substitution is supported without circuit modification.

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

A: The 90J39RE is RoHS Compliant, while the 90J39R is RoHS non-compliant. All other electrical and mechanical parameters are identical.

Q: Are there any package or mounting differences?

A: No. Both parts use identical axial package configuration with 2 terminations and matching dimensions of 0.343" Dia x 1.811" L (8.70mm x 46.00mm). PCB layout and mounting procedures remain unchanged.

Q: Which part should be selected for new designs?

A: Selection is based on compliance requirements. For designs requiring RoHS compliance, specify the 90J39RE. For applications without RoHS mandates, either part is acceptable based on availability and cost considerations.

Q: Do these parts have different temperature performance characteristics?

A: No. Both parts share identical temperature coefficient specifications of ±30ppm/°C, ensuring equivalent thermal stability across the operating range.