Equivalent & Substitute Parts for F20J2K5

Part Overview

The F20J2K5 is a 2.5 kOhms ±5% 20W wirewound chassis mount resistor manufactured by Ohmite, part of 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 product status with 680 pieces available in inventory. Substitute parts are identified when design requirements permit reduced power ratings or when alternative compliance certifications are necessary for specific applications.

Substiute Parts

F20J2K5

OhmiteIn Stock: 706F20J2K5 Datasheet

Current PartRFQ

F10J2K5E

OhmiteIn Stock: 1136F10J2K5E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the F20J2K5 is determined by the following critical parameters:

• Resistance Value: Must be 2.5 kOhms
• Tolerance: Must be ±5%
• Composition: Must be Wirewound
• Temperature Coefficient: Must be ±260ppm/°C
• Operating Temperature Range: Must be -55°C to 350°C
• Mounting Feature: Must be Flange Braces, Right Angle
• Lead Style: Must be Solder Lugs
• Package/Case: Must be Radial, Flat Oval
• Physical Dimensions: Must be 0.750" L x 0.375" W (19.05mm x 9.53mm)

The F10J2K5E qualifies as a parametric equivalent substitute when power dissipation requirements permit a reduction from 20W to 10W. All other electrical and mechanical parameters remain identical.

Parameter Comparison

Engineering Selection Recommendations

F20J2K5 is the primary selection for applications requiring 20W power dissipation at 2.5 kOhms resistance. This part is Active in product status and maintains RoHS non-compliant certification.

F10J2K5E serves as a substitute when circuit design permits 10W power dissipation. This part is Active in product status and achieves ROHS3 compliance, making it suitable for applications with RoHS requirements. The F10J2K5E also provides higher inventory availability at 1055 pieces compared to 680 pieces for the F20J2K5.

Selection between these parts depends on power dissipation requirements and regulatory compliance needs. Both parts share identical electrical characteristics, mechanical mounting features, and physical dimensions.

Frequently Asked Questions (FAQ)

Q: Can F10J2K5E replace F20J2K5 in all applications?

A: F10J2K5E can replace F20J2K5 only when the circuit design permits 10W power dissipation. If the application requires 20W dissipation capability, F10J2K5E is not suitable.

Q: What is the primary difference between these two parts?

A: The primary difference is power rating. F20J2K5 is rated for 20W while F10J2K5E is rated for 10W. All other electrical parameters, mechanical dimensions, and mounting features are identical.

Q: Does RoHS compliance affect electrical performance?

A: RoHS compliance status does not affect electrical performance. F10J2K5E achieves ROHS3 compliance while F20J2K5 is RoHS non-compliant. Selection depends on regulatory requirements for the end application.

Q: Are the physical dimensions identical?

A: Yes. Both F20J2K5 and F10J2K5E share identical physical dimensions of 0.750" L x 0.375" W (19.05mm x 9.53mm) and identical mounting features with flange braces and right angle configuration.

Q: What is the temperature operating range for both parts?

A: Both parts operate across -55°C to 350°C with a temperature coefficient of ±260ppm/°C.

Q: Are both parts currently in production?

A: Yes. Both F20J2K5 and F10J2K5E are Active in product status with current inventory availability.