Ohmite 85F7R5 Equivalent & Substitute Parts

Part Overview

The Ohmite 85F7R5 is a 7.5 Ohms ±1% 5W through-hole resistor with axial wirewound construction from the Acrasil® 80 series. This component is designed for applications requiring precision resistance with moderate power dissipation in a compact axial package. The part is currently active in production. Substitute parts may be required due to inventory availability, packaging preferences, or compliance requirements specific to end-use applications.

Substiute Parts

85F7R5

OhmiteIn Stock: 89285F7R5 Datasheet

Current PartRFQ

45F7R5E

OhmiteIn Stock: 117445F7R5E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The Ohmite 45F7R5E qualifies as a parametric equivalent to the 85F7R5 based on the following criteria:

• Identical resistance value: 7.5 Ohms
• Identical tolerance: ±1%
• Identical power rating: 5W
• Identical composition: Wirewound
• Identical package type: Axial
• Identical temperature coefficient: ±50ppm/°C
• Identical physical dimensions: 0.343" Dia x 0.937" L (8.70mm x 23.80mm)
• Identical number of terminations: 2

Both parts are manufactured by Ohmite and maintain full electrical and mechanical compatibility. The primary differences are the product series (Acrasil® 80 versus Ohmicone® 40) and packaging format (tape versus bulk).

Parameter Comparison

Engineering Selection Recommendations

Both the 85F7R5 and 45F7R5E are active production parts from Ohmite with identical electrical and mechanical specifications. Selection between these parts should be based on the following factors:

The 45F7R5E offers ROHS3 compliance, making it suitable for applications subject to RoHS regulations. The 85F7R5 is RoHS non-compliant and should be selected only for applications where RoHS compliance is not required.

Packaging format differs between the two parts: the 85F7R5 is supplied in tape format, while the 45F7R5E is supplied in bulk. Packaging selection depends on assembly process requirements and inventory management practices.

Both parts maintain identical performance characteristics across all electrical parameters, including resistance tolerance, power dissipation capability, and temperature coefficient.

Frequently Asked Questions (FAQ)

Q: Can the 45F7R5E be used as a direct replacement for the 85F7R5?

A: Yes. Both parts have identical electrical specifications (7.5 Ohms ±1%, 5W, ±50ppm/°C) and mechanical dimensions (0.343" Dia x 0.937" L). They are functionally interchangeable in circuit applications.

Q: What is the difference between these two part numbers?

A: The parts differ in product series (Acrasil® 80 versus Ohmicone® 40), packaging format (tape versus bulk), and RoHS compliance status. All electrical and mechanical parameters are identical.

Q: Which part should I select for RoHS-compliant applications?

A: The 45F7R5E is ROHS3 compliant and should be used for applications requiring RoHS compliance. The 85F7R5 is RoHS non-compliant.

Q: Are the physical dimensions identical?

A: Yes. Both parts measure 0.343" diameter by 0.937" length (8.70mm x 23.80mm) and use identical axial packaging with two terminations.

Q: Does packaging format affect electrical performance?

A: No. Tape and bulk packaging formats do not affect electrical performance. Selection should be based on assembly process requirements and inventory management needs.