Ohmite 45J82RE Equivalent & Substitute Parts

Part Overview

The Ohmite 45J82RE is an 82 Ohms ±5% 5W through-hole resistor with axial wirewound construction, part of the Ohmicone® 40 series. This component is actively manufactured and widely used in applications requiring precision power dissipation in compact form factors. Finding equivalent and substitute parts is necessary when addressing inventory constraints, upgrading tolerance specifications, or optimizing procurement across multiple suppliers while maintaining electrical and mechanical compatibility.

Substiute Parts

45J82RE

OhmiteIn Stock: 102745J82RE Datasheet

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45F82RE

OhmiteIn Stock: 118545F82RE Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the Ohmite 45J82RE is determined by strict adherence to the following electrical and mechanical parameters:

• Resistance Value: Must be 82 Ohms
• Power Rating: Must be 5W minimum
• Package Configuration: Must be Axial wirewound
• Physical Dimensions: Must match 0.343" Dia x 0.937" L (8.70mm x 23.80mm)
• Temperature Coefficient: Must be ±20ppm/°C
• Number of Terminations: Must be 2
• Composition: Must be Wirewound

The Ohmite 45F82RE qualifies as a direct substitute because it maintains all critical electrical and mechanical parameters while offering an upgraded tolerance specification of ±1% compared to the original ±5%.

Parameter Comparison

Engineering Selection Recommendations

Both the Ohmite 45J82RE and 45F82RE are active products from the same manufacturer and series, ensuring design continuity and supply chain reliability. The 45F82RE represents an upgrade path, offering tighter tolerance control (±1% versus ±5%) while maintaining identical electrical performance, power dissipation capability, and thermal characteristics. Both components meet RoHS compliance requirements, with the 45F82RE meeting the more stringent ROHS3 standard. Selection between these parts should be based on tolerance requirements of the specific application and packaging preferences (box versus bulk availability).

Frequently Asked Questions (FAQ)

Q: Can the 45F82RE directly replace the 45J82RE in existing designs?

A: Yes. The 45F82RE maintains all critical electrical and mechanical parameters, including resistance value, power rating, physical dimensions, temperature coefficient, and axial package configuration. The tighter tolerance specification of the 45F82RE is a performance enhancement that does not compromise compatibility.

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

A: The tolerance specification differs: the 45J82RE has ±5% tolerance, while the 45F82RE has ±1% tolerance. Both are 82 Ohm, 5W wirewound axial resistors from the Ohmicone® 40 series with identical physical dimensions and thermal characteristics.

Q: Are there packaging differences between these parts?

A: Yes. The 45J82RE is supplied in box packaging, while the 45F82RE is supplied in bulk packaging. The actual component dimensions and electrical specifications are identical.

Q: Do both parts meet environmental compliance standards?

A: Both parts are RoHS compliant. The 45F82RE additionally meets ROHS3 compliance, representing a higher environmental standard. Both are suitable for applications requiring regulatory compliance.

Q: What applications benefit from the tighter tolerance of the 45F82RE?

A: Applications requiring precise resistance values, such as precision measurement circuits, calibration networks, and high-accuracy signal conditioning, benefit from the ±1% tolerance. General-purpose applications may not require this upgrade.