Equivalent & Substitute Parts for Ohmite 825F7R5

Part Overview

The Ohmite 825F7R5 is a 7.5 Ohms ±1% 25W wirewound chassis mount resistor from the Metal-Mite®89 series. This component is classified as obsolete, making identification of suitable alternatives essential for ongoing system support and new production requirements. The substitute part maintains identical electrical and mechanical specifications while offering improved compliance status and active product availability.

Substiute Parts

825F7R5

OhmiteIn Stock: 1243825F7R5 Datasheet

Current PartRFQ

825F7R5E

OhmiteIn Stock: 1613825F7R5E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The Ohmite 825F7R5E qualifies as a direct substitute based on the following criteria:

Electrical Parameters Match:

• Resistance: 7.5 Ohms (identical)
• Tolerance: ±1% (identical)
• Power Rating: 25W (identical)
• Temperature Coefficient: ±50ppm/°C (identical)
• Operating Temperature Range: -55°C to 275°C (identical)

Mechanical Parameters Match:

• Composition: Wirewound (identical)
• Housing Type: Aluminum (identical)
• Mounting Feature: Flanges (identical)
• Lead Style: Solder Lugs (identical)
• Package Type: Axial, Box (identical)
• Physical Dimensions: 1.062" L x 1.094" W (identical)
• Height - Seated (Max): 0.556" (identical)

Series Continuity:

• Both components belong to the Metal-Mite®89 series

The substitute maintains complete functional and mechanical equivalence, enabling direct replacement in existing designs without circuit modification or mechanical redesign.

Parameter Comparison

Engineering Selection Recommendations

The 825F7R5E is the appropriate selection for new designs and production applications. The substitute part offers the following advantages:

Product Status: The 825F7R5E maintains active product status, ensuring long-term availability and supply chain continuity compared to the obsolete 825F7R5.

Regulatory Compliance: The 825F7R5E is ROHS3 compliant, meeting current environmental and regulatory requirements. The original 825F7R5 is RoHS non-compliant and does not satisfy modern procurement standards.

Functional Equivalence: All electrical and mechanical parameters are identical, enabling direct substitution without design modification.

Packaging: The 825F7R5E is supplied in tray packaging, which is standard for production environments and improves handling efficiency compared to bulk packaging.

Frequently Asked Questions (FAQ)

Q: Can the 825F7R5E be used as a direct replacement for the 825F7R5?

A: Yes. The 825F7R5E is electrically and mechanically identical to the 825F7R5. All resistance, tolerance, power rating, temperature coefficient, operating temperature range, housing type, mounting features, lead style, package type, and physical dimensions are equivalent. No circuit or mechanical modifications are required.

Q: What is the primary reason to transition from 825F7R5 to 825F7R5E?

A: The 825F7R5 is obsolete and no longer in active production. The 825F7R5E is the current active equivalent from Ohmite, ensuring supply availability and compliance with modern regulatory standards.

Q: Are there compliance differences between these parts?

A: Yes. The 825F7R5E is ROHS3 compliant, while the 825F7R5 is RoHS non-compliant. For applications subject to RoHS regulations, the 825F7R5E is the required choice.

Q: Do the packaging differences affect compatibility?

A: No. The 825F7R5E is supplied in tray packaging while the 825F7R5 was supplied in bulk. Both contain identical components. Tray packaging is standard for production environments and does not affect electrical or mechanical performance.

Q: Are both parts from the same manufacturer and series?

A: Yes. Both the 825F7R5 and 825F7R5E are manufactured by Ohmite and belong to the Metal-Mite®89 series, ensuring design continuity and performance consistency.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is determined by matching resistance value (7.5 Ohms), tolerance (±1%), power rating (25W), temperature coefficient (±50ppm/°C), operating temperature range (-55°C to 275°C), composition (wirewound), housing type (aluminum), mounting feature (flanges), lead style (solder lugs), package type (axial, box), and physical dimensions (1.062" L x 1.094" W, height 0.556" max).