Ohmite F20J2R0E Wirewound Chassis Mount Resistor - Equivalent & Substitute Parts

Part Overview

The Ohmite F20J2R0E is a 2 Ohms ±5% 20W wirewound chassis mount resistor from the Stackohm® 250 series. This component is designed for high-power applications requiring reliable thermal dissipation and mechanical stability through flange-braced mounting. The part maintains active product status with full ROHS3 compliance and REACH unaffected certification. Substitute parts are identified when equivalent electrical and mechanical parameters are required but alternative power ratings or inventory considerations necessitate component alternatives.

Substiute Parts

F20J2R0E

OhmiteIn Stock: 1090F20J2R0E Datasheet

Current PartRFQ

F10J2R0E

OhmiteIn Stock: 1190F10J2R0E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the F20J2R0E is determined by strict equivalence in the following critical parameters: resistance value (2 Ohms), tolerance (±5%), composition (wirewound), temperature coefficient (±400ppm/°C), operating temperature range (-55°C to 350°C), coating type (vitreous enamel), mounting configuration (flange braces, right angle), lead style (solder lugs), and package type (radial, flat oval). The power rating may vary within the same series when circuit design permits, provided all other electrical and mechanical specifications remain identical. Compliance certifications (ROHS3, REACH unaffected) must be maintained.

Parameter Comparison

Engineering Selection Recommendations

The F10J2R0E serves as a parametric equivalent to the F20J2R0E with identical electrical characteristics and mechanical form factor. Both components maintain active product status with full regulatory compliance (ROHS3 compliant, REACH unaffected). Selection between these parts depends on circuit power dissipation requirements. The F20J2R0E is specified for applications requiring 20W continuous power dissipation, while the F10J2R0E is suitable for circuits with maximum 10W power dissipation. Both components share identical resistance, tolerance, temperature coefficient, operating temperature range, and mounting configuration, ensuring direct mechanical and electrical interchangeability within their respective power ratings.

Frequently Asked Questions (FAQ)

Q: Can the F10J2R0E replace the F20J2R0E in all applications?

A: The F10J2R0E is electrically and mechanically equivalent to the F20J2R0E. Substitution is valid only when circuit power dissipation does not exceed 10W. Applications requiring sustained power dissipation above 10W must use the F20J2R0E.

Q: Are the physical dimensions identical between F20J2R0E and F10J2R0E?

A: Yes. Both components share identical dimensions: 0.750" L x 0.375" W (19.05mm x 9.53mm) with maximum seated height of 0.375" (9.53mm). Mechanical mounting and PCB layout compatibility is maintained.

Q: Do both parts meet the same compliance standards?

A: Yes. Both F20J2R0E and F10J2R0E are ROHS3 compliant and REACH unaffected, meeting identical regulatory requirements.

Q: What is the key difference between these substitute parts?

A: The primary difference is power rating. The F20J2R0E is rated for 20W continuous dissipation, while the F10J2R0E is rated for 10W. All other electrical parameters, including resistance, tolerance, temperature coefficient, and operating temperature range, are identical.

Q: Are both parts from the same manufacturer series?

A: Yes. Both components are from the Ohmite Stackohm® 250 series, ensuring consistent design and performance characteristics.