Ohmite 40J680 680 Ohm 10W Axial Wirewound Resistor Equivalent & Substitute Parts

Part Overview

The Ohmite 40J680 is a 680 Ohm, 10W axial wirewound resistor from the Ohmicone® 40 series. This through-hole component is designed for applications requiring precise resistance values with moderate power dissipation in compact form factors. The part is currently active in production. Substitute parts may be required due to packaging preferences, compliance requirements, or inventory availability across different distribution channels.

Substiute Parts

40J680

OhmiteIn Stock: 74340J680 Datasheet

Current PartRFQ

40J680E

OhmiteIn Stock: 104440J680E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The 40J680E qualifies as a parametric equivalent to the 40J680 based on the following critical substitution criteria:

Electrical Parameters: Identical resistance value (680 Ohms), tolerance (±5%), power rating (10W), temperature coefficient (±20ppm/°C), and composition (wirewound).

Mechanical Parameters: Identical package type (axial), physical dimensions (0.406" Dia x 1.902" L), and termination count (2).

Series Designation: Both parts belong to the Ohmicone® 40 series.

The primary distinction between these parts is packaging format and RoHS compliance status, which do not affect electrical or mechanical interchangeability in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both the 40J680 and 40J680E are active production parts from Ohmite with identical electrical and mechanical specifications. Selection between these parts should be based on the following criteria:

Choose 40J680 when standard packaging is required or when RoHS non-compliant components are acceptable for the application.

Choose 40J680E when ROHS3 compliance is mandated by design requirements, procurement specifications, or regulatory standards applicable to the end product. The 40J680E also offers bulk packaging, which may be advantageous for high-volume manufacturing operations.

Both parts maintain identical circuit performance characteristics and are mechanically interchangeable in all through-hole axial resistor applications requiring 680 Ohm, 10W specifications.

Frequently Asked Questions (FAQ)

Q: Are the 40J680 and 40J680E electrically identical?

A: Yes. Both parts have identical resistance value (680 Ohms), tolerance (±5%), power rating (10W), temperature coefficient (±20ppm/°C), and wirewound composition. They will perform identically in circuit applications.

Q: What is the difference between these two parts?

A: The primary differences are packaging format (standard vs. bulk) and RoHS compliance status. The 40J680E is ROHS3 compliant, while the 40J680 is RoHS non-compliant. These differences do not affect electrical or mechanical performance.

Q: Are these parts mechanically interchangeable?

A: Yes. Both parts share identical axial package type, physical dimensions (0.406" Dia x 1.902" L), and two-terminal configuration. They are directly interchangeable in PCB layouts and through-hole applications.

Q: When should I use the 40J680E instead of the 40J680?

A: Use the 40J680E when your design or procurement requirements specify ROHS3 compliance. This is common in consumer electronics, automotive, and regulated industrial applications where RoHS compliance is mandatory.

Q: Can I substitute one part for the other in existing designs?

A: Yes, provided that RoHS compliance requirements are compatible with your application. If the original design specifies 40J680, the 40J680E can be used as a direct substitute in applications where ROHS3 compliance is acceptable or required.

Q: Do these parts have different temperature operating ranges?

A: No operating temperature range data is provided in the specifications for either part. Both share identical temperature coefficient specifications (±20ppm/°C).