Equivalent & Substitute Parts for Ohmite 20J3R0

Part Overview

The Ohmite 20J3R0 is a 3 Ohm, 5% tolerance, 10W axial wirewound resistor with flame retardant coating and safety features. This component is designed for through-hole applications requiring reliable power dissipation in industrial and electronic equipment. The part is currently active in production with 1021 units in stock. Substitute parts are identified to provide alternative sourcing options while maintaining electrical and mechanical compatibility.

Substiute Parts

20J3R0

OhmiteIn Stock: 105420J3R0 Datasheet

Current PartRFQ

20J3R0E

OhmiteIn Stock: 110020J3R0E Datasheet

Parametric EquivalentRFQ

20J3R0E

OhmiteIn Stock: 110020J3R0E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Ohmite 20J3R0 are identified based on strict parametric equivalence. The following criteria determine substitutability:

• Resistance value: 3 Ohms
• Tolerance: ±5%
• Power rating: 10W
• Composition: Wirewound
• Package configuration: Axial
• Physical dimensions: 0.394" Dia x 1.858" L (10.00mm x 47.20mm)
• Temperature coefficient: ±50ppm/°C
• Features: Flame retardant coating and safety characteristics

The identified substitute, Ohmite 20J3R0E, meets all electrical and mechanical parameters. Differences exist only in packaging format (Bulk vs. standard packaging) and compliance certifications (RoHS status and REACH classification).

Parameter Comparison

Engineering Selection Recommendations

Both the Ohmite 20J3R0 and 20J3R0E are electrically and mechanically identical, with all critical performance parameters matching exactly. Selection between these parts depends on application-specific requirements:

The 20J3R0E offers RoHS compliance, making it suitable for applications subject to RoHS regulations or customer specifications requiring compliant components. The 20J3R0 remains available for applications without RoHS compliance requirements. Both parts are active products with adequate inventory levels. Packaging format differs (standard vs. bulk), which may influence procurement and handling procedures but does not affect electrical performance or mechanical fit.

Frequently Asked Questions (FAQ)

Q: Can the 20J3R0E directly replace the 20J3R0 in existing designs?

A: Yes. The 20J3R0E is a parametric equivalent with identical electrical specifications (3 Ohms, ±5%, 10W), composition (wirewound), and physical dimensions (0.394" Dia x 1.858" L). The axial package configuration and termination count are identical, ensuring direct mechanical compatibility in through-hole applications.

Q: What is the difference between the 20J3R0 and 20J3R0E?

A: The primary differences are packaging format (standard vs. bulk) and compliance certifications. The 20J3R0E is RoHS compliant with MSL 1 rating, while the 20J3R0 is RoHS non-compliant. All electrical and mechanical parameters are identical.

Q: Which part should be selected for RoHS-regulated applications?

A: The 20J3R0E is RoHS compliant and suitable for applications requiring RoHS certification. The 20J3R0 does not meet RoHS requirements and should not be used in applications with RoHS compliance mandates.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both parts have identical dimensions of 0.394" Dia x 1.858" L (10.00mm x 47.20mm), ensuring identical PCB footprint and mounting requirements.

Q: What is the temperature coefficient specification for these resistors?

A: Both parts have a temperature coefficient of ±50ppm/°C, indicating stable resistance performance across the operating temperature range.