OD241JE Equivalent & Substitute Parts

Part Overview

The OD241JE is a 240 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 PCB applications. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications.

Substiute Parts

OD241JE

OhmiteIn Stock: 1008OD241JE Datasheet

Current PartRFQ

OD221KE

OhmiteIn Stock: 2824OD221KE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the OD241JE is determined by the following critical parameters:

• Resistance Value: The substitute must operate within acceptable circuit tolerance. The OD241JE specifies 240 Ohms ±5%, establishing a nominal range of 228–252 Ohms.
• Power Rating: The substitute must match or exceed the 0.25W (1/4W) power dissipation requirement.
• Package Type: The substitute must be axial through-hole configuration to maintain PCB compatibility and mechanical fit.
• Physical Dimensions: The substitute must conform to the 0.098" Dia x 0.276" L (2.50mm x 7.00mm) envelope for board layout compatibility.
• Composition & Features: Carbon composition construction with pulse withstanding capability ensures electrical performance consistency.
• Compliance: RoHS3 compliance and MSL 1 rating must be maintained for manufacturing and environmental standards.

The OD221KE is identified as a substitute based on matching package type, power rating, physical dimensions, composition, and compliance certifications. The resistance value differs (220 Ohms ±10% versus 240 Ohms ±5%), which represents a 8.3% nominal deviation and must be evaluated against circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the OD241JE and OD221KE are obsolete products within the Little Demon® OD series. Selection between these parts must be based on circuit tolerance requirements and application-specific resistance specifications.

The OD241JE provides tighter tolerance (±5%) at the specified 240 Ohm value. The OD221KE offers wider tolerance (±10%) at 220 Ohms, representing an 8.3% nominal resistance reduction. Both parts maintain identical power ratings, physical dimensions, composition, and compliance certifications.

For applications where the 240 Ohm specification is critical to circuit function, the OD241JE tolerance advantage is significant. For applications where a 220 Ohm value falls within acceptable circuit parameters, the OD221KE substitution is valid. Circuit analysis must confirm that the 20 Ohm difference and increased tolerance do not compromise performance, stability, or safety margins.

Both parts are ROHS3 compliant and carry MSL 1 rating, meeting current manufacturing and environmental standards.

Frequently Asked Questions (FAQ)

Q: Can the OD221KE directly replace the OD241JE in all applications?

A: Direct substitution depends on circuit tolerance. The OD221KE has a nominal resistance 20 Ohms lower (220 Ohms versus 240 Ohms) with wider tolerance (±10% versus ±5%). Circuit analysis must confirm this 8.3% nominal deviation is acceptable for the intended application.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both parts share identical axial package dimensions of 0.098" Dia x 0.276" L (2.50mm x 7.00mm), ensuring mechanical compatibility with existing PCB layouts and through-hole spacing.

Q: Do both parts meet current compliance requirements?

A: Yes. Both the OD241JE and OD221KE are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, meeting current manufacturing and environmental standards.

Q: Why are both parts classified as obsolete?

A: Both parts are legacy products in the Little Demon® OD series. Obsolete status indicates discontinued manufacturing. Current production alternatives from Ohmite or other manufacturers should be evaluated for new designs.

Q: What is the significance of the tolerance difference between these parts?

A: The OD241JE specifies ±5% tolerance, establishing a resistance range of 228–252 Ohms. The OD221KE specifies ±10% tolerance, establishing a range of 198–242 Ohms. Applications requiring precise resistance values benefit from the tighter OD241JE tolerance.

Q: Are these parts suitable for high-frequency or high-temperature applications?

A: Operating temperature and temperature coefficient data are not provided in the specifications. Application suitability for high-frequency or high-temperature environments must be determined through circuit analysis and thermal modeling.