OD181JE Equivalent & Substitute Parts

Part Overview

The OD181JE is a 180 Ohm ±5% 1/4W axial through-hole resistor manufactured by Ohmite as part of the Little Demon® OD series. This carbon composition resistor features pulse withstanding capability and is designed for through-hole applications requiring reliable performance in legacy electronic equipment.

The OD181JE is classified as obsolete. Locating equivalent or substitute components becomes necessary when original stock is depleted or when system redesigns require sourcing from current inventory. Substitute parts must maintain electrical compatibility across resistance value, tolerance, power rating, and physical form factor to ensure proper circuit operation.

Substiute Parts

OD181JE

OhmiteIn Stock: 919OD181JE Datasheet

Current PartRFQ

OD181KE

OhmiteIn Stock: 3283OD181KE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OD181JE is determined by the following critical parameters:

• Resistance Value: Must be 180 Ohms
• Power Rating: Must be 0.25W (1/4W) minimum
• Package Type: Must be Axial through-hole configuration
• Physical Dimensions: Must match 0.098" Dia x 0.276" L (2.50mm x 7.00mm)
• Composition: Carbon Composition construction
• Compliance: ROHS3 Compliant status

The OD181KE qualifies as a substitute because it maintains identical resistance value, power rating, package type, physical dimensions, and composition. The tolerance specification differs (±10% versus ±5%), which represents a relaxation of the tolerance requirement. This substitution is valid in applications where the wider tolerance of ±10% is acceptable within circuit design margins.

Parameter Comparison

Engineering Selection Recommendations

The OD181KE serves as a direct substitute for the OD181JE in applications where tolerance relaxation from ±5% to ±10% is permissible within circuit design specifications. Both components are ROHS3 compliant and share identical physical form factors, enabling direct board-level replacement without layout modifications.

Selection between these parts depends on circuit tolerance requirements. Applications with tighter tolerance specifications must retain the OD181JE or source equivalent ±5% tolerance components. Applications with tolerance margins accommodating ±10% variation may proceed with the OD181KE, which offers greater current inventory availability.

Frequently Asked Questions (FAQ)

Q: Can the OD181KE replace the OD181JE in any application?

A: The OD181KE is electrically and mechanically compatible with the OD181JE. Substitution is valid only when the circuit design tolerates the wider ±10% tolerance specification of the OD181KE compared to the ±5% tolerance of the OD181JE.

Q: Are the physical dimensions identical between OD181JE and OD181KE?

A: Yes. Both components share identical axial package dimensions of 0.098" Dia x 0.276" L (2.50mm x 7.00mm), enabling direct board-level substitution without PCB layout changes.

Q: Do both parts meet RoHS compliance requirements?

A: Yes. Both the OD181JE and OD181KE are ROHS3 compliant and carry Moisture Sensitivity Level 1 (Unlimited), meeting current environmental and reliability standards.

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

A: The primary difference is tolerance specification. The OD181JE provides ±5% tolerance, while the OD181KE provides ±10% tolerance. Both maintain identical 180 Ohm resistance value, 0.25W power rating, and carbon composition construction.

Q: Can I use OD181KE in a circuit originally designed for OD181JE?

A: Substitution is permissible only if circuit analysis confirms that component tolerance variation within ±10% does not violate design specifications or performance requirements. Review circuit schematics and tolerance stack-up calculations before implementation.