OF181JE Equivalent & Substitute Parts Reference

Part Overview

The OF181JE is a 180 Ohms ±5% 0.5W through-hole resistor manufactured by Ohmite in the Little Demon® OF series. This carbon composition axial resistor features pulse withstanding capability and is designed for applications requiring reliable fixed resistance in compact form factors. The product is classified as obsolete, making equivalent and substitute parts necessary for ongoing maintenance, repair, and legacy system support.

Substiute Parts

OF181JE

OhmiteIn Stock: 1693OF181JE Datasheet

Current PartRFQ

OF181KE

OhmiteIn Stock: 1853OF181KE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OF181JE is determined by the following critical parameters that must remain constant or within acceptable engineering tolerances:

• Resistance value: 180 Ohms (exact match required)
• Power rating: 0.5W minimum (equal or higher acceptable)
• Package type: Axial through-hole (mechanical compatibility)
• Physical dimensions: 0.150" Dia x 0.406" L (form factor compatibility)
• Composition: Carbon composition (electrical characteristics)
• Termination count: 2 (circuit board compatibility)

The tolerance specification may be relaxed from ±5% to ±10% in applications where circuit design permits wider resistance variation, provided all other parameters remain aligned. The substitute part OF181KE meets these criteria while offering different tolerance and packaging specifications.

Parameter Comparison

Engineering Selection Recommendations

The OF181KE serves as a direct substitute for the OF181JE in applications where tolerance specifications permit. Both components are manufactured by Ohmite within the Little Demon® OF series, share identical resistance values, power ratings, physical dimensions, and composition characteristics. Both maintain ROHS3 compliance and unlimited moisture sensitivity ratings.

The primary distinction between these parts is tolerance specification: the OF181JE provides ±5% tolerance while the OF181KE provides ±10% tolerance. Circuit designs that require tighter resistance tolerance must specify the OF181JE or equivalent ±5% tolerance parts. Applications with tolerance margins accommodating ±10% variation may utilize the OF181KE without performance degradation.

Both parts are classified as obsolete products. Component selection should prioritize current inventory availability and lead time requirements for production planning.

Frequently Asked Questions (FAQ)

Q: Can OF181KE replace OF181JE in all applications?

A: OF181KE is mechanically and electrically compatible with OF181JE for applications where ±10% tolerance is acceptable. If circuit design requires ±5% tolerance, OF181JE or equivalent ±5% tolerance parts must be specified.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both OF181JE and OF181KE measure 0.150" Dia x 0.406" L (3.80mm x 10.30mm) and are packaged as axial through-hole components, ensuring identical form factor and circuit board compatibility.

Q: What is the difference between Strip and Bulk packaging?

A: Strip packaging provides components in tape-and-reel format suitable for automated assembly processes. Bulk packaging provides loose components. Both packaging types contain the same electrical component; packaging selection depends on manufacturing process requirements.

Q: Are both parts RoHS compliant?

A: Yes. Both OF181JE and OF181KE are ROHS3 compliant and carry unlimited moisture sensitivity ratings (MSL 1), meeting current environmental and reliability standards.

Q: Why is the OF181JE classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. Substitute parts from current inventory or equivalent components from alternative manufacturers may be required for ongoing system support and repairs.