OF911JE Equivalent & Substitute Parts Reference

Part Overview

The OF911JE is a 910 Ohms ±5% 0.5W through-hole axial resistor manufactured by Ohmite as part of the Little Demon® OF series. This carbon composition resistor features pulse withstanding capability and is housed in a standard axial package measuring 0.150" diameter by 0.406" length. The product is classified as obsolete, making identification of suitable substitute components essential for ongoing maintenance, repair, and legacy system support.

Substiute Parts

OF911JE

OhmiteIn Stock: 695OF911JE Datasheet

Current PartRFQ

OF821KE

OhmiteIn Stock: 1468OF821KE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OF911JE is determined by the following critical parameters:

• Resistance Value: The substitute must operate within the circuit's tolerance band. The OF911JE specifies 910 Ohms ±5%, establishing a nominal range of 864.5 to 955.5 Ohms.
• Power Rating: The substitute must support the same 0.5W (1/2W) power dissipation requirement.
• Package Type: The substitute must use the same axial through-hole package to ensure mechanical compatibility with existing PCB layouts and component spacing.
• Physical Dimensions: The substitute must match the 0.150" diameter by 0.406" length specification to fit within board-level constraints.
• Composition and Features: Carbon composition construction with pulse withstanding capability ensures consistency in electrical behavior and transient response.
• Compliance: RoHS3 compliance and MSL 1 rating must be maintained for regulatory and environmental requirements.

The OF821KE qualifies as a substitute based on matching package type, power rating, physical dimensions, composition, and compliance certifications. The resistance value difference (820 Ohms versus 910 Ohms) and tolerance variance (±10% versus ±5%) must be evaluated within the specific circuit application to confirm functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

Both the OF911JE and OF821KE are obsolete products within the Ohmite Little Demon® OF series. Both components maintain ROHS3 compliance and MSL 1 ratings, satisfying regulatory and environmental requirements for legacy system applications.

The primary distinction between these components is the resistance value and tolerance specification. The OF821KE presents a 90 Ohm nominal difference (820 Ohms versus 910 Ohms) with a wider tolerance band (±10% versus ±5%). Component selection must be based on circuit-level requirements and the acceptable resistance range for the intended application.

Both components share identical package geometry, power rating, composition type, and pulse withstanding features, ensuring mechanical and thermal compatibility within the same PCB footprint and thermal environment.

Frequently Asked Questions (FAQ)

Q: Can the OF821KE directly replace the OF911JE in all applications?

A: Both components share identical package type, power rating, physical dimensions, and composition. However, the resistance value difference (820 Ohms versus 910 Ohms) and tolerance variance (±10% versus ±5%) require circuit-level evaluation. Substitution is valid only when the circuit's functional requirements accommodate the OF821KE's resistance range.

Q: What is the acceptable resistance range for each component?

A: The OF911JE operates within 864.5 to 955.5 Ohms (910 Ohms ±5%). The OF821KE operates within 738 to 902 Ohms (820 Ohms ±10%). Overlap exists between 864.5 and 902 Ohms, where both components may function interchangeably depending on circuit tolerance.

Q: Are both components suitable for pulse withstanding applications?

A: Yes. Both the OF911JE and OF821KE are specified with pulse withstanding capability, making them suitable for transient and surge environments.

Q: Do both components meet current compliance requirements?

A: Yes. Both components are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity level), satisfying current regulatory and environmental standards.

Q: What is the physical compatibility between these components?

A: Both components are identical in package type (axial), physical dimensions (0.150" diameter by 0.406" length), and termination count (2). They are mechanically interchangeable within the same PCB footprint.