ST-0470-BLB-STD Allicdata Electronics
Allicdata Part #:

ST-0470-BLB-STD-ND

Manufacturer Part#:

ST-0470-BLB-STD

Price: $ 0.74
Product Category:

Circuit Protection

Manufacturer: Bourns Inc.
Short Description: GDT 470V 12% THROUGH HOLE
More Detail: Gas Discharge Tube 470V ±12% 2 Pole Through Hole
DataSheet: ST-0470-BLB-STD datasheetST-0470-BLB-STD Datasheet/PDF
Quantity: 1000
Lead Free Status / RoHS Status: Lead free / RoHS Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)
6000 +: $ 0.66938
Stock 1000Can Ship Immediately
$ 0.74
Specifications
Series: Sparctube™ ST-0470
Packaging: Bulk 
Lead Free Status / RoHS Status: --
Part Status: Active
Moisture Sensitivity Level (MSL): --
Voltage - DC Spark Over (Nom): 470V
Impulse Discharge Current (8/20µs): --
Tolerance: ±12%
Number of Poles: 2
Fail Short: No
Mounting Type: Through Hole
Package / Case: Axial Cylinder
Description

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Gas Discharge Tube Arresters (GDT)
The ST-0470-BLB-STD application field and working principle is part of the Gas Discharge Tube Arresters (GDT) family. Gas Discharge Tube Arresters have a wide variety of applications, from protecting machinery and circuits against transient voltage spikes to power line surge protection.Gas discharge tube arresters protect electronic components and other sensitive equipment from the destructive effects of electrical surges and other high voltage electrical faults. Gas discharge tube arresters are typically used in overvoltage protection applications and act as a “last-line” of defense to protect equipment against electrical surges.GDTs are constructed from two glass tubes, each filled with a gas and attached to a wire core. The gas-filled tubes act as spark gaps, rapidly trying to reduce the surge-generated voltage by ionizing the air between them. When a surge is sensed, the gap between the two gas-filled tubes starts to spark, creating a conducting path for the current to pass through and hence dissipate the surge.The ST-0470-BLB-STD is a particularly useful GDT for surge protection, with features such as an integrated closed loop current limiting circuit. This allows the ST-0470-BLB-STD to detect and rapidly respond to transient surges, without the need for an external current limiting device.The ST-0470-BLB-STD is typically installed in applications such as computer systems and network equipment, where it is used to provide protection from transient voltage that can be caused by switching operations, lightning strikes or other sources of overvoltage.When overvoltage is sensed, the ST-0470-BLB-STD initiates a breakover, or tripping process, to protect the equipment from the surge. This process is triggered by the mechanism of spark propagation in the gas-filled tubes.The spark propagation mechanism works by heating up the gas in the tubes, causing the molecules to expand and reduce the gas pressure within the tubes. The reduction in gas pressure results in an increase in electric current through the tubes, initiating a breakover process.Once the breakover process has been initiated, the ST-0470-BLB-STD is able to pass the current through the gap, effectively limiting the surge to a safe level. The current limitation mechanism is aided by the integrated closed loop current limiting circuit, which allows the ST-0470-BLB-STD to detect and rapidly respond to voltage spikes.The ST-0470-BLB-STD is also able to pass a limited amount of power in its normal state, while blocking a much higher level of power in response to a surge. After the surge has been dissipated, the ST-0470-BLB-STD resets itself and returns to normal operation.In conclusion, the ST-0470-BLB-STD is a highly useful surge protection device from the Gas Discharge Tube Arresters (GDT) family. It is typically used in applications such as computer systems and network equipment, where it is used to provide excellent protection against transient voltage that can be caused by switching operations, lightning strikes or other sources of overvoltage. Its integrated closed loop current limiting circuit allows it to detect and rapidly respond to transient surges, providing an effective and reliable means of protecting equipment against electrical surges.

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