OF51GJE Equivalent & Substitute Parts Reference

Part Overview

The OF51GJE is a 5.1 Ohm ±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 designed for axial package applications. The product is classified as obsolete, making equivalent and substitute parts necessary for ongoing circuit maintenance, repair, and legacy system support.

Substiute Parts

OF51GJE

OhmiteIn Stock: 1127OF51GJE Datasheet

Current PartRFQ

OF47GKE

OhmiteIn Stock: 955OF47GKE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the OF51GJE is based on the following critical parameters:

• Package Type: Axial through-hole configuration with matching physical dimensions (0.150" Dia x 0.406" L)
• Power Rating: 0.5W (1/2W) minimum
• Composition: Carbon composition construction
• Features: Pulse withstanding capability
• Compliance: ROHS3 compliant status
• Termination: 2-terminal axial leads

The OF47GKE is identified as a manufacturer-recommended substitute. While the resistance value differs (4.7 Ohms versus 5.1 Ohms) and tolerance is wider (±10% versus ±5%), the substitute maintains identical package geometry, power rating, composition type, pulse withstanding features, and compliance certifications. The resistance and tolerance variance must be evaluated against specific circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

The OF47GKE is the manufacturer-recommended substitute for the OF51GJE. Both components share identical package geometry, power rating, composition type, pulse withstanding features, and ROHS3 compliance status. The primary differences are resistance value (4.7 Ohms versus 5.1 Ohms) and tolerance specification (±10% versus ±5%).

Selection of the OF47GKE requires circuit-level evaluation to confirm that the 0.4 Ohm resistance difference and wider tolerance band are acceptable for the intended application. Both components maintain equivalent mechanical compatibility and environmental compliance characteristics.

Frequently Asked Questions (FAQ)

Q: Can OF47GKE be used as a direct replacement for OF51GJE?

A: The OF47GKE is the manufacturer-recommended substitute and shares identical package dimensions, power rating, composition, and compliance certifications. However, the resistance value and tolerance differ. Circuit-level analysis is required to determine compatibility.

Q: What are the physical compatibility requirements?

A: Both components use identical axial package geometry (0.150" Dia x 0.406" L / 3.80mm x 10.30mm) and 2-terminal axial leads, ensuring mechanical compatibility in through-hole PCB applications.

Q: Are both parts ROHS3 compliant?

A: Yes. Both OF51GJE and OF47GKE are ROHS3 compliant with MSL rating of 1 (Unlimited).

Q: What is the significance of the tolerance difference?

A: OF51GJE specifies ±5% tolerance while OF47GKE specifies ±10% tolerance. Applications requiring tighter resistance tolerance may not be suitable for the substitute without circuit redesign.

Q: Do both parts have pulse withstanding capability?

A: Yes. Both components feature pulse withstanding capability as part of the Little Demon® OF series design.

Q: What is the product status of both parts?

A: Both OF51GJE and OF47GKE are classified as obsolete products.