681-5

Diode Arrays Overview

The Microchip Technology 681-5 is a standard recovery rectifier assembly featuring an electrically isolated aluminum casing. It provides a maximum average DC output current of 15 A at a case temperature of 55 °C and supports surge currents up to 150 A. The device operates with a working peak reverse voltage of 500 V and withstands junction temperatures from -65 °C to +150 °C. Electrical characteristics include a maximum forward voltage of 1.2 V per leg at 10 A and a maximum reverse peak current of 10 µA at 25 °C.

Diode Arrays Feature Summary

• Electrically isolated aluminum casing for thermal management
• Controlled avalanche characteristics for robust operation
• Standard recovery time suitable for general-purpose rectification

Diode Arrays Applications

• Power supply circuits requiring isolated rectification
• Industrial equipment utilizing center tap or doubler configurations
• Applications demanding high surge current handling capabilities

Diode Arrays Procurement Notes

Verify the specific terminal configuration suffix (P, N, or D) required for the circuit topology, as these denote Center Tap Positive, Center Tap Negative, and Doubler arrangements respectively. Confirm RoHS compliance status by checking for the e3 designation in the ordering part number. Ensure the selected variant matches the required working peak reverse voltage level indicated by the numeric suffix.

Diode Arrays Selection Notes

Select this component when a standard recovery rectifier with an isolated aluminum package is necessary. The 681 series is appropriate for applications where controlled avalanche behavior is beneficial. Consider the thermal resistance values and derating curves if operating at elevated case temperatures above 55 °C to maintain the rated 15 A output current.

Diode Arrays Part Context

This device belongs to the 681(e3) and 689(e3) series of rectifier assemblies manufactured by Microsemi Corporation, now part of Microchip Technology. The series includes both standard and fast recovery variants housed in identical electrically isolated aluminum casings. These components are designed for high-power applications requiring reliable rectification with integrated thermal dissipation through the metal case.

Diode Arrays Replacement Considerations

Direct substitutes within the same family include the 689-5 fast recovery variant. Other models in the series offer different voltage ratings such as 681-4 (400 V) or 681-6 (600 V). Verify that any replacement maintains the same terminal configuration and meets the thermal and electrical requirements of the original design.

Diode Arrays FAQ

What is the difference between the 681 and 689 series?

The 681 series consists of standard recovery rectifiers, while the 689 series features fast recovery rectifiers with a specified reverse recovery time of 500 ns.

How does the terminal configuration affect installation?

The suffix indicates the pinout: 'P' is Center Tap Positive, 'N' is Center Tap Negative, and 'D' is Doubler. This determines how the AC input and DC output terminals are arranged on the aluminum casing.

What is the maximum junction temperature rating?

The maximum junction and storage temperature rating is +150 °C.