OF20GJE Equivalent & Substitute Parts Reference

Part Overview

The OF20GJE is a 2 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 mounting in through-hole applications. The product is classified as obsolete, making equivalent and substitute parts necessary for ongoing maintenance, repair, and legacy system support.

Substiute Parts

OF20GJE

OhmiteIn Stock: 1078OF20GJE Datasheet

Current PartRFQ

OF22GKE

OhmiteIn Stock: 1930OF22GKE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the OF20GJE is determined by the following critical parameters:

• Resistance Value: The primary substitution criterion. The OF22GKE provides 2.2 Ohms, representing a 10% increase from the original 2 Ohm specification.
• Power Rating: Both parts maintain 0.5W (1/2W) capacity, ensuring equivalent thermal handling.
• Package Type: Both parts use axial through-hole packaging with identical physical dimensions (0.150" Dia x 0.406" L).
• Composition: Both are carbon composition resistors with pulse withstanding features.
• Compliance: Both parts meet ROHS3 compliance and MSL 1 requirements.

The OF22GKE substitute differs in resistance tolerance (±10% versus ±5%) and absolute resistance value (2.2 Ohms versus 2 Ohms). This 0.2 Ohm difference must be evaluated against circuit requirements and acceptable tolerance ranges.

Parameter Comparison

Engineering Selection Recommendations

Both the OF20GJE and OF22GKE are obsolete products within the Little Demon® OF series. Selection between these parts depends on circuit tolerance requirements and resistance value specifications:

• OF20GJE is the original specification with 2 Ohm resistance and ±5% tolerance, suitable for applications requiring precise 2 Ohm values within a 1.9 to 2.1 Ohm range.
• OF22GKE provides 2.2 Ohm resistance with ±10% tolerance, suitable for applications where 2.2 Ohm values within a 1.98 to 2.42 Ohm range are acceptable.

Both parts maintain identical physical dimensions, power ratings, and compliance certifications (ROHS3, MSL 1). The 0.2 Ohm difference and tolerance variance must be evaluated against specific circuit design parameters and acceptable operating ranges.

Frequently Asked Questions (FAQ)

Q: Can OF22GKE directly replace OF20GJE in all applications?

A: Direct replacement depends on circuit tolerance requirements. The OF22GKE has a higher resistance value (2.2 Ohms versus 2 Ohms) and wider tolerance (±10% versus ±5%). Applications requiring precise 2 Ohm values may not accept this substitute without circuit analysis.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both OF20GJE and OF22GKE share identical axial package dimensions of 0.150" Dia x 0.406" L (3.80mm x 10.30mm), ensuring mechanical compatibility in through-hole mounting applications.

Q: Do both parts meet current compliance requirements?

A: Both parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings. However, both are classified as obsolete products, and availability may be limited.

Q: What is the significance of the tolerance difference?

A: OF20GJE specifies ±5% tolerance, providing a tighter resistance range (1.9 to 2.1 Ohms). OF22GKE specifies ±10% tolerance with a wider range (1.98 to 2.42 Ohms). Applications with strict resistance specifications may require the tighter tolerance of the original part.

Q: Are there any thermal or power handling differences?

A: No. Both parts are rated at 0.5W (1/2W) power dissipation and use identical carbon composition construction with pulse withstanding features.