OD201JE Equivalent & Substitute Parts

Part Overview

The OD201JE is a 200 Ohms ±5% 0.25W (1/4W) through-hole resistor in axial package configuration, manufactured by Ohmite as part of the Little Demon® OD series. This carbon composition resistor features pulse withstanding capability and is classified as obsolete. Due to its obsolete status, identifying equivalent substitute parts is essential for ongoing maintenance, repair, and legacy system support where this component remains in service.

Substiute Parts

OD201JE

OhmiteIn Stock: 992OD201JE Datasheet

Current PartRFQ

OD181KE

OhmiteIn Stock: 3283OD181KE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the OD201JE is determined by the following critical parameters:

• Resistance Value: The substitute must operate within the circuit's tolerance band. The OD201JE specifies 200 Ohms ±5%, establishing a nominal range of 190–210 Ohms.
• Power Rating: The substitute must support at least 0.25W (1/4W) continuous power dissipation.
• Package Configuration: The substitute must be axial through-hole format with compatible physical dimensions (0.098" Dia x 0.276" L).
• Composition Type: Carbon composition construction maintains consistency with the original design.
• Compliance Standards: RoHS3 compliance and MSL rating ensure regulatory and environmental compatibility.

The OD181KE is identified as a manufacturer-recommended substitute. While it differs in resistance value (180 Ohms) and tolerance (±10%), it maintains identical power rating, package configuration, composition type, and compliance certifications. The resistance difference of 20 Ohms (10% below nominal) falls within acceptable substitution parameters for applications where circuit design permits tolerance variation.

Parameter Comparison

Engineering Selection Recommendations

Both the OD201JE and OD181KE are obsolete products within the Ohmite Little Demon® OD series. Both components maintain ROHS3 compliance and MSL rating of 1 (Unlimited), ensuring regulatory alignment and environmental stability. The OD181KE is designated as the manufacturer-recommended substitute, indicating Ohmite's engineering assessment of functional equivalence for legacy applications.

Selection between these parts depends on circuit-specific tolerance requirements. The OD201JE provides tighter tolerance (±5%) suitable for precision applications. The OD181KE, with ±10% tolerance and 180 Ohm nominal value, is appropriate for applications where the 20 Ohm variance and wider tolerance band do not compromise circuit performance. Both components share identical power ratings, physical dimensions, and pulse withstanding characteristics, ensuring mechanical and thermal compatibility in through-hole PCB applications.

Frequently Asked Questions (FAQ)

Q: Can OD181KE directly replace OD201JE in any circuit?

A: Direct substitution depends on circuit tolerance requirements. The OD181KE has a nominal resistance 20 Ohms lower (180 vs. 200 Ohms) with ±10% tolerance versus ±5%. Circuits designed with tight tolerance specifications may require engineering analysis to confirm acceptable performance margins.

Q: Are the physical dimensions identical between OD201JE and OD181KE?

A: Yes. Both components are 0.098" diameter by 0.276" length (2.50mm x 7.00mm) in axial package configuration, ensuring identical PCB footprint and through-hole compatibility.

Q: Do both parts meet current regulatory standards?

A: Both OD201JE and OD181KE are ROHS3 compliant with MSL rating of 1 (Unlimited), meeting current environmental and regulatory requirements for electronic component use.

Q: What is the significance of the carbon composition construction?

A: Carbon composition construction is a defining characteristic of the Little Demon® OD series. Both the main part and substitute maintain this composition type, ensuring consistency in electrical behavior, pulse withstanding capability, and thermal characteristics across legacy system applications.

Q: Why are both parts classified as obsolete?

A: Obsolete status indicates these components are no longer in active production by Ohmite. However, inventory availability and manufacturer-recommended substitution pathways remain established for legacy system support and maintenance applications.