Ohmite 20J2R0 2 Ohm 10W Axial Wirewound Resistor Equivalent & Substitute Parts

Part Overview

The Ohmite 20J2R0 is a 2 Ohm, 10W through-hole axial wirewound resistor with flame retardant coating and safety features. This component is designed for applications requiring precision power dissipation in compact form factors. The part is currently active in production with 921 units in stock. Substitute parts are identified to provide alternative sourcing options while maintaining electrical and mechanical compatibility within the specified parameter tolerances.

Substiute Parts

20J2R0

OhmiteIn Stock: 98320J2R0 Datasheet

Current PartRFQ

20J2R0E

OhmiteIn Stock: 98620J2R0E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Ohmite 20J2R0 is determined by strict equivalence across the following critical parameters:

• Electrical Parameters: Resistance value (2 Ohms), tolerance (±5%), power rating (10W), and temperature coefficient (±50ppm/°C) must be identical
• Construction: Wirewound composition with flame retardant coating and safety features must be maintained
• Mechanical Compatibility: Axial package type with identical physical dimensions (0.394" Dia x 1.858" L) and 2-pin termination configuration
• Manufacturer: Ohmite series 20 resistors meeting the above specifications

The substitute part 20J2R0E meets all electrical and mechanical requirements for direct substitution. The primary distinction is packaging format (Bulk vs. standard) and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Both the 20J2R0 and 20J2R0E are electrically and mechanically equivalent for direct substitution in circuit applications. Selection between these parts should be based on the following criteria:

20J2R0: Select this part when standard packaging is required and RoHS non-compliant components are acceptable for the application.

20J2R0E: Select this part when RoHS compliance is mandated by design specifications or regulatory requirements. This variant is available in bulk packaging and offers improved environmental compliance status.

Both parts maintain identical electrical performance, physical dimensions, and thermal characteristics. The choice between them is determined by compliance requirements and packaging logistics rather than functional performance.

Frequently Asked Questions (FAQ)

Q: Can 20J2R0E be used as a direct replacement for 20J2R0 in existing designs?

A: Yes. The 20J2R0E is electrically and mechanically equivalent to the 20J2R0. All critical parameters including resistance, tolerance, power rating, temperature coefficient, and physical dimensions are identical. The primary difference is RoHS compliance status and packaging format.

Q: What is the difference between standard and bulk packaging?

A: Packaging format refers to the quantity and presentation method for component delivery. Standard packaging typically includes smaller quantities with individual component protection, while bulk packaging provides larger quantities with reduced per-unit packaging material. Electrical and mechanical specifications remain unchanged.

Q: Does RoHS compliance affect electrical performance?

A: No. RoHS compliance is a regulatory and environmental designation that does not alter the electrical characteristics or performance of the component. Both RoHS-compliant and non-compliant variants of this resistor deliver identical electrical performance.

Q: Are the physical dimensions identical between 20J2R0 and 20J2R0E?

A: Yes. Both parts share identical physical dimensions of 0.394" diameter by 1.858" length (10.00mm x 47.20mm). They are mechanically interchangeable in PCB layouts and mechanical assemblies.

Q: What does Moisture Sensitivity Level (MSL) indicate?

A: MSL defines the maximum time a component can be exposed to ambient moisture before soldering. MSL 1 (Unlimited) indicates no moisture sensitivity restrictions. This specification does not affect electrical performance or substitution eligibility.