Ohmite 45J680 680 Ohm 5W Axial Wirewound Resistor Equivalent & Substitute Parts

Part Overview

The Ohmite 45J680 is a 680 Ohm, 5% tolerance, 5W through-hole axial wirewound resistor from the Ohmicone® 40 series. This component is designed for applications requiring precision resistive elements with moderate power dissipation in compact axial configurations. The part maintains active product status with 980 units currently in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity when the primary part number becomes unavailable or when alternative packaging configurations are required.

Substiute Parts

45J680

OhmiteIn Stock: 109045J680 Datasheet

Current PartRFQ

45J680E

OhmiteIn Stock: 151745J680E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Ohmite 45J680 is determined by strict equivalence across the following critical parameters:

• Resistance value: 680 Ohms
• Tolerance: ±5%
• Power rating: 5W
• Composition: Wirewound
• Package configuration: Axial
• Temperature coefficient: ±20ppm/°C
• Physical dimensions: 0.343" Dia x 0.937" L (8.70mm x 23.80mm)
• Number of terminations: 2

The identified substitute part 45J680E maintains identical electrical and mechanical specifications. The primary distinction between the main part and substitute is packaging configuration (standard vs. bulk) and RoHS compliance status, which do not affect functional interchangeability in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both the 45J680 and 45J680E are active products from Ohmite's Ohmicone® 40 series with identical electrical and mechanical specifications. Selection between these parts should be based on the following criteria:

45J680 (Standard Packaging): Select this part number when standard packaging configuration is required for your procurement process or when RoHS non-compliant components are acceptable for your application.

45J680E (Bulk Packaging, ROHS3 Compliant): Select this part number when bulk packaging is preferred for high-volume assembly operations or when ROHS3 compliance is mandated by your design requirements or regulatory framework. This variant offers higher current inventory availability (1428 units vs. 980 units).

Both parts share identical REACH and ECCN classifications (REACH Unaffected, EAR99), ensuring equivalent regulatory treatment in export and supply chain contexts.

Frequently Asked Questions (FAQ)

Q: Are the 45J680 and 45J680E electrically identical?

A: Yes. Both parts are 680 Ohm, 5% tolerance, 5W wirewound axial resistors with ±20ppm/°C temperature coefficient. They are functionally equivalent in all circuit applications.

Q: What is the difference between these part numbers?

A: The primary differences are packaging configuration (standard vs. bulk) and RoHS compliance status. The 45J680E is ROHS3 compliant, while the 45J680 is RoHS non-compliant. Electrical and mechanical specifications are identical.

Q: Can I use 45J680E as a direct replacement for 45J680?

A: Yes. The 45J680E is a direct functional substitute. Physical dimensions, termination configuration, and all electrical parameters are identical, ensuring drop-in compatibility in PCB layouts and circuit designs.

Q: Does RoHS compliance affect circuit performance?

A: No. RoHS compliance relates to material composition and environmental regulations, not electrical performance. Both variants deliver identical resistance, tolerance, power rating, and temperature coefficient specifications.

Q: Which part should I specify for new designs?

A: Specify based on your regulatory and procurement requirements. If ROHS3 compliance is required, use 45J680E. If RoHS compliance is not a constraint, either part is acceptable. The 45J680E offers higher inventory availability.

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 package configuration with 2 terminations.