Ohmite 20J50R Equivalent & Substitute Parts

Part Overview

The Ohmite 20J50R is a 50 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 maintains Active product status with 1019 units in current inventory. Substitute parts become necessary when addressing supply chain constraints, compliance requirements, or specific packaging preferences while maintaining identical electrical and mechanical performance.

Substiute Parts

20J50R

OhmiteIn Stock: 105420J50R Datasheet

Current PartRFQ

20J50RE

OhmiteIn Stock: 116520J50RE Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Ohmite 20J50R is determined by strict equivalence across the following parameters:

• Resistance value: 50 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: ±30ppm/°C
• Termination count: 2

The Ohmite 20J50RE meets all electrical and mechanical requirements for direct substitution. Both parts share identical resistance, tolerance, power dissipation capability, wirewound construction, axial packaging, and thermal characteristics. The primary distinction lies in compliance certification status.

Parameter Comparison

Engineering Selection Recommendations

Both the 20J50R and 20J50RE are electrically and mechanically equivalent components suitable for direct substitution in 50 Ohm, 10W axial wirewound resistor applications. Selection between these parts should be based on compliance requirements:

The 20J50R is appropriate for applications where RoHS non-compliance is acceptable or where legacy component specifications are maintained. The 20J50RE provides ROHS3 compliance, making it the preferred choice for new designs, manufacturing environments with RoHS mandates, or supply chains requiring compliance certification. Both parts maintain identical thermal performance, power dissipation characteristics, and physical form factor, ensuring seamless integration into existing PCB layouts and circuit designs.

Frequently Asked Questions (FAQ)

Q: Can the 20J50RE replace the 20J50R in existing designs?

A: Yes. The 20J50RE is a direct electrical and mechanical equivalent. Both components share identical resistance (50 Ohms), tolerance (±5%), power rating (10W), axial package configuration, and physical dimensions (0.394" Dia x 1.858" L). No circuit modifications or PCB layout changes are required.

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

A: The 20J50RE is ROHS3 compliant, while the 20J50R is RoHS non-compliant. All other electrical, thermal, and mechanical specifications are identical.

Q: Are the physical dimensions identical?

A: Yes. Both the 20J50R and 20J50RE measure 0.394" diameter by 1.858" length (10.00mm x 47.20mm). They are interchangeable in through-hole PCB applications without layout modifications.

Q: Do these resistors have the same temperature coefficient?

A: Yes. Both parts exhibit a temperature coefficient of ±30ppm/°C, ensuring equivalent thermal stability across operating conditions.

Q: Which part should I specify for new product designs?

A: The 20J50RE is recommended for new designs due to ROHS3 compliance. This certification aligns with current manufacturing standards and regulatory requirements in most markets.

Q: Are both parts currently in stock?

A: Yes. The 20J50R has 1019 units in inventory, and the 20J50RE has 1133 units available.