Ohmite F20J7K5 Equivalent & Substitute Parts

Part Overview

The Ohmite F20J7K5 is a 7.5 kOhms ±5% 20W wirewound chassis mount resistor from the Stackohm® 250 series. This component is designed for applications requiring high power dissipation with stable resistance values across extended temperature ranges. The part is currently active in production with 1145 units in stock. Substitute parts are identified to address packaging variations and compliance requirements while maintaining identical electrical and mechanical specifications.

Substiute Parts

F20J7K5

OhmiteIn Stock: 1180F20J7K5 Datasheet

Current PartRFQ

F20J7K5E

OhmiteIn Stock: 964F20J7K5E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the F20J7K5 is determined by strict equivalence across the following critical parameters:

• Resistance value: 7.5 kOhms
• Tolerance: ±5%
• Power rating: 20W
• Composition: Wirewound
• Temperature coefficient: ±260ppm/°C
• Operating temperature range: -55°C to 350°C
• Coating type: Vitreous Enamel Coated
• Mounting configuration: Flange Braces, Right Angle
• Physical dimensions: 0.750" L x 0.375" W (19.05mm x 9.53mm)
• Lead style: Solder Lugs
• Package type: Radial, Flat Oval

The identified substitute part F20J7K5E maintains complete electrical and mechanical equivalence. The primary distinction is packaging format (bulk versus standard packaging) and RoHS compliance status.

Parameter Comparison

Engineering Selection Recommendations

Both F20J7K5 and F20J7K5E are active production components from Ohmite's Stackohm® 250 series with identical electrical and mechanical specifications. Selection between these parts should be based on compliance requirements and procurement constraints.

The F20J7K5E variant offers ROHS3 compliance, making it suitable for applications subject to RoHS directives. The F20J7K5 remains available for applications where RoHS compliance is not a requirement. Both parts are REACH Unaffected and classified under ECCN EAR99.

Packaging format differs between the two variants: F20J7K5 is supplied in standard packaging, while F20J7K5E is supplied in bulk format. This distinction may affect procurement workflows and inventory management but does not impact component performance or compatibility.

Frequently Asked Questions (FAQ)

Q: Are F20J7K5 and F20J7K5E electrically identical?

A: Yes. Both parts have identical resistance value (7.5 kOhms), tolerance (±5%), power rating (20W), temperature coefficient (±260ppm/°C), and operating temperature range (-55°C to 350°C).

Q: What is the difference between F20J7K5 and F20J7K5E?

A: The primary differences are packaging format (standard versus bulk) and RoHS compliance status. F20J7K5E is ROHS3 compliant, while F20J7K5 is RoHS non-compliant. Electrical and mechanical specifications are identical.

Q: Can F20J7K5E replace F20J7K5 in existing designs?

A: Yes, provided that RoHS compliance requirements are met or not applicable to the application. Physical dimensions, mounting configuration, and electrical characteristics are identical.

Q: Are there any mechanical compatibility concerns when substituting between these parts?

A: No. Both parts share identical physical dimensions (0.750" L x 0.375" W), mounting features (Flange Braces, Right Angle), lead style (Solder Lugs), and package type (Radial, Flat Oval).

Q: Which part should be selected for new designs?

A: Selection depends on regulatory and compliance requirements. For applications requiring RoHS compliance, F20J7K5E is the appropriate choice. For applications without RoHS requirements, either part is suitable based on availability and procurement preferences.