LPR100 25R J Equivalent & Substitute Parts

Part Overview

The LPR100 25R J is an active, ROHS3 compliant chassis mount resistor manufactured by Ohmite in the LPR series. This low-profile aluminum housing component is rated for 100 watts at 25 ohms with ±5% tolerance and operates at temperatures up to 250°C. The part is supplied with wire leads and screw hole mounting features. Alternative equivalent parts may be required due to inventory constraints, application-specific power requirements, or design modifications that permit lower power dissipation ratings.

Substiute Parts

LPR100 25R J

OhmiteIn Stock: 1200LPR100 25R J Datasheet

Current PartRFQ

LPR50 25R J

OhmiteIn Stock: 1151LPR50 25R J Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The LPR50 25R J qualifies as a parametric equivalent to the LPR100 25R J based on the following matching electrical and mechanical parameters:

Matching Parameters:

• Resistance value: 25 Ohms
• Tolerance: ±5%
• Operating temperature: 250°C
• Coating / Housing type: Aluminum
• Mounting feature: Screw holes
• Lead style: Wire leads
• Package / Case: Rectangular case
• Series: LPR
• Manufacturer: Ohmite
• Product status: Active
• RoHS compliance: ROHS3 Compliant

Differing Parameter:

• Power rating: 50W (versus 100W for the main part)

The LPR50 25R J is suitable for applications where the circuit design permits operation at the lower 50-watt power dissipation level while maintaining all other electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the LPR100 25R J and LPR50 25R J are active products with ROHS3 compliance and REACH unaffected status. Selection between these parts is determined by the circuit's power dissipation requirements. The LPR100 25R J is specified for applications requiring 100-watt dissipation capacity. The LPR50 25R J is suitable for circuits where maximum power dissipation does not exceed 50 watts. Both parts maintain identical electrical characteristics (25 ohms, ±5% tolerance, 250°C operating temperature) and mechanical mounting interfaces (screw holes, wire leads, aluminum housing). The primary dimensional difference is the length: the LPR50 25R J measures 50.00mm in length compared to 100.00mm for the LPR100 25R J, while width and height remain constant. Component selection should be based on the actual power dissipation load in the target application.

Frequently Asked Questions (FAQ)

Q: Can the LPR50 25R J be used as a direct replacement for the LPR100 25R J?

A: The LPR50 25R J is electrically and mechanically compatible with the LPR100 25R J when the circuit design operates at or below 50 watts of power dissipation. If the application requires sustained power dissipation exceeding 50 watts, the LPR100 25R J is the appropriate selection.

Q: Are the mounting interfaces identical between these two parts?

A: Yes. Both parts feature screw hole mounting, wire leads, and aluminum housing. The mounting interface is identical. The primary difference is the component length: 50.00mm for the LPR50 25R J versus 100.00mm for the LPR100 25R J.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the LPR100 25R J and LPR50 25R J are ROHS3 compliant and REACH unaffected. Both carry EAR99 ECCN classification and the same HTSUS code (8533.29.0000).

Q: What is the resistance and tolerance specification for both parts?

A: Both parts are rated at 25 ohms with ±5% tolerance. The electrical resistance characteristics are identical.

Q: Is the operating temperature range the same for both parts?

A: Yes. Both parts operate at temperatures up to 250°C.

Q: How do the physical dimensions differ?

A: The LPR50 25R J measures 1.969" L x 2.953" W (50.00mm x 75.00mm) with a maximum seated height of 0.244" (6.20mm). The LPR100 25R J measures 3.937" L x 2.953" W (100.00mm x 75.00mm) with the same maximum seated height of 0.244" (6.20mm). The width and height are identical; the length differs.