VS-ST083S04PFM1P Allicdata Electronics
Allicdata Part #:

VS-ST083S04PFM1P-ND

Manufacturer Part#:

VS-ST083S04PFM1P

Price: $ 53.47
Product Category:

Discrete Semiconductor Products

Manufacturer: Vishay Semiconductor Diodes Division
Short Description: SCR 400V 135A TO-94
More Detail: SCR 400V 135A Standard Recovery Chassis, Stud Moun...
DataSheet: VS-ST083S04PFM1P datasheetVS-ST083S04PFM1P Datasheet/PDF
Quantity: 1000
25 +: $ 48.60930
Stock 1000Can Ship Immediately
$ 53.47
Specifications
Current - On State (It (RMS)) (Max): 135A
Supplier Device Package: TO-209AC (TO-94)
Package / Case: TO-209AC, TO-94-4, Stud
Mounting Type: Chassis, Stud Mount
Operating Temperature: -40°C ~ 125°C
SCR Type: Standard Recovery
Current - Non Rep. Surge 50, 60Hz (Itsm): 2060A, 2160A
Current - Off State (Max): 30mA
Current - Hold (Ih) (Max): 600mA
Series: --
Current - On State (It (AV)) (Max): 85A
Voltage - On State (Vtm) (Max): 2.15V
Current - Gate Trigger (Igt) (Max): 200mA
Voltage - Gate Trigger (Vgt) (Max): 3V
Voltage - Off State: 400V
Part Status: Active
Packaging: Bulk 
Description

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Thyristors - SCRs

A Silicon Controlled Rectifier obeys specific laws of physics which differ from conventional diodes. The SCR is a four-layer, three-terminal semiconductor device, that is useful for controlling power in high current applications. The most common type of SCR is the ST083S04PFM1P, which is usually used as an on/off switch, or a phase control device. In this article, we will discuss the application field and working principle of the ST083S04PFM1P.

Application Field

The ST083S04PFM1P is ideally suited for off-line, AC power control applications where a high current flow of up to 10A is required. Some examples of these applications are power motor speed control, light dimming, welding control, AC motor control and power switching. The high peak pulse current capability makes it ideal for motor start-up and other high inrush current applications. It is also usable for low frequency DC power control in rectifier circuits.

Working Principle

The ST083S04PFM1P is a four-layer device with three terminals: Anode, Cathode and Gate. The anode and cathode are the positive and negative terminals of the SCR device, while the Gate acts as a control terminal. The anode-cathode junction of the SCR is a PN junction diode, while the gate-cathode junction is a PNPN junction diode. When the anode is positive with respect to the cathode, Na+ ions in the p-type material migrate across the junction. One of the two conditions is then required for current to flow:

  • The anode terminal is raised to a higher potential than the gate terminal.
  • A current is passed through the gate terminal.
When this occurs, the PNPN junction is forward biased, allowing current to flow through the device. The SCR then acts as a low impedance switch, which allows current to flow even when the gate potential is reduced to zero. The SCR will continue to conduct until the anode voltage is reduced below the holding voltage, at which point the device will turn off. This can be done by reducing the anode voltage, reducing the gate voltage, or by passing a reverse current through the gate.

Conclusion

The ST083S04PFM1P is a four-layer, three terminal, Silicon Controlled Rectifier that is used for controlling power in high current applications. It is ideal for off-line, AC power control applications where a high current flow of up to 10A is required. The working principle is based on forward biasing the PNPN junction, which allows current to flow through the device and acts as a low impedance switch.

The specific data is subject to PDF, and the above content is for reference

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