FST8145 The Microsemi FST8145 is a 45V, 40A per leg Schottky diode module in a common cathode configuration. It offers 800A surge capability and is mounted to a chassis in a module package.
Mfr Part #:

FST8145

Available from 1 distributors
Mfr Name: Microsemi Corporation
Microsemi Corporation
The Microsemi FST8145 is a 45V, 40A per leg Schottky diode module in a common cathode configuration. It offers 800A surge capability and is mounted to a chassis in a module package.
Total Stock: 3 pcs

FST8145 Available from 1 distributor

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FST8145 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Average Forward Current
Current
Diode Configuration
Junction Capacitance
Lead Spacing
Maximum Surge Current (Per Leg)
Mounting Torque
Mounting Type
Operating Junction Temperature Range
Reverse Current
Speed
Storage Temperature
Storage Temperature Range
Supplier Device Package
Technology
Termination Style
Thermal Resistance - Junction to Case
Voltage
Weight

FST8145 Description

Short technical summary and product information.

The Microsemi FST8145 is a high-current Schottky rectifier module designed for power conversion applications. It features a common cathode configuration with two diodes, each rated for 40A average forward current, providing a total package current rating of 80A. The module has a maximum reverse voltage of 45V and can withstand surge currents up to 800A per leg. The forward voltage is typically 530mV at 40A and 25°C.

 

With a maximum junction temperature of 150°C and a thermal resistance of 0.5°C/W from junction to case, the FST8145 is suitable for demanding thermal environments. The module is chassis mountable with screw terminals and has a typical weight of 8.4 grams. It is designed for fast switching applications with recovery times under 500ns.

 

The device is RoHS compliant and has an MSL rating of 1 with unlimited floor life. It is commonly used in power supplies, inverters, and motor drives where high efficiency and reliability are required.

 

Cross-reference parts include the industry equivalents 80CNQ045 and 84CNQ045. The FST8145 is manufactured by Microsemi Corporation, a leader in semiconductor solutions.

FST8145 Quick Information

Product Type: Schottky Diode Module
Series: FST8130-FST8145
Canonical Name: Microsemi FST8145 Schottky Diode Module 45V 40A Common Cathode
Subcategory: Schottky Rectifier Diode Module

FST8145 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

FST8145 Features

  • 45V reverse voltage and 40A forward current per leg.
  • 800A surge current capability for high inrush conditions.
  • Common cathode configuration for dual-diode applications.
  • Chassis mount module with screw terminals.
  • RoHS compliant with MSL 1 rating.

FST8145 Applications

  • Used in high-current power supply rectification.
  • Ideal for motor drive and inverter circuits.
  • Suitable for battery charging and DC-DC converters.
  • Applied in welding equipment and UPS systems.

FST8145 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the maximum reverse voltage of the FST8145?

The FST8145 has a maximum peak reverse voltage of 45V.

What is the forward current rating of the FST8145?

80A per package (40A per leg).

What is the forward voltage drop of the FST8145?

Maximum 530 mV at 40A and 25°C.

What is the surge current rating of the FST8145?

800A per leg (half-sine wave, 8.3 ms).

What is the operating junction temperature range?

-55°C to 150°C.

What is the package type of the FST8145?

Module (chassis mount with screw terminals).

Is the FST8145 RoHS compliant?

The datasheet indicates RoHS3 compliance, but this has not been independently verified.

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