Ohmite 43J680 680 Ohm 3W Axial Wirewound Resistor - Equivalent & Substitute Parts

Part Overview

The Ohmite 43J680 is a 680 Ohm, ±5% tolerance, 3W through-hole axial wirewound resistor from the Ohmicone® 40 series. This component is designed for applications requiring precision power dissipation in compact axial form factor. The part is currently active in production with 672 units 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 bulk packaging is preferred.

Substiute Parts

43J680

OhmiteIn Stock: 69743J680 Datasheet

Current PartRFQ

43J680E

OhmiteIn Stock: 110243J680E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The Ohmite 43J680E is classified as a parametric equivalent to the 43J680. Substitution is valid based on the following criteria:

• Identical Electrical Specifications: Both parts maintain 680 Ohms resistance, ±5% tolerance, and 3W power rating
• Matching Composition: Both are wirewound construction with ±20ppm/°C temperature coefficient
• Identical Physical Form Factor: Both use axial package with 0.220" diameter and 0.594" length (5.60mm x 15.10mm)
• Same Termination Configuration: Both feature 2 terminations for direct pin-to-pin compatibility
• Packaging Difference: The 43J680E is supplied in bulk packaging versus the standard packaging of the 43J680, making it suitable for high-volume applications

The 43J680E maintains full electrical and mechanical interchangeability with the 43J680 across all critical performance parameters.

Parameter Comparison

Engineering Selection Recommendations

Both the 43J680 and 43J680E are active production parts from Ohmite with identical electrical and mechanical specifications. Selection between these parts should be based on the following factors:

43J680: Select this part number when standard packaging is required and RoHS non-compliant components are acceptable for the application.

43J680E: Select this part number for high-volume procurement requiring bulk packaging, when RoHS compliance is mandated, or when extended operating temperature range documentation (-55°C ~ 275°C) is required for design verification. The 43J680E also offers higher inventory availability (1056 units versus 672 units).

Both parts are suitable for direct substitution in axial wirewound resistor applications requiring 680 Ohm, 3W, ±5% tolerance specifications.

Frequently Asked Questions (FAQ)

Q: Can the 43J680E directly replace the 43J680 in existing designs?

A: Yes. The 43J680E is electrically and mechanically identical to the 43J680. Both parts have the same resistance value (680 Ohms), tolerance (±5%), power rating (3W), temperature coefficient (±20ppm/°C), and axial package dimensions (0.220" Dia x 0.594" L). Direct substitution is valid for all circuit applications.

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

A: The primary differences are packaging format (bulk versus standard) and compliance certifications. The 43J680E is RoHS compliant and includes documented operating temperature range (-55°C ~ 275°C), while the 43J680 is RoHS non-compliant. Electrically and mechanically, both parts are identical.

Q: Are there any PCB layout or mounting considerations when switching between these parts?

A: No. Both parts use identical axial package form factor with 0.220" diameter and 0.594" length. PCB footprints, lead spacing, and mounting procedures remain unchanged.

Q: Which part should be selected for new designs?

A: The 43J680E is recommended for new designs due to RoHS compliance and documented operating temperature specifications. Both parts are active and available; however, the 43J680E provides better compliance documentation and higher inventory levels.

Q: Is the bulk packaging of the 43J680E suitable for automated assembly?

A: Bulk packaging is standard for high-volume manufacturing environments. Confirm with your assembly partner that bulk-packaged axial resistors are compatible with your production equipment and processes.