SG90 Gas Discharge Tube
MPN: SG90
TowerPro
Smaller micro-servo for low-torque, lightweight applications and prototyping.
Active14,631 in stock
Overview
The SG90 is a surface-mount gas discharge tube (GDT) designed for overvoltage protection in electronic circuits. It acts as a crowbar device, diverting transient currents away from sensitive components when a voltage surge exceeds its breakdown threshold. This specific variant has a Vdd_max of 90V.
Why Choose This Part
The SG90 offers reliable and fast-acting overvoltage protection in a compact surface-mount package. Its non-degrading performance over multiple surge events makes it a durable choice for long-term reliability. With a breakdown voltage specified at 90V, it is suitable for applications requiring protection at this voltage level.
Applications
Power Supply Protection
Protecting DC and AC power supply lines from lightning strikes and other transient overvoltages.
Data Line Surge Protection
Safeguarding communication interfaces such as I2C, SPI, and UART from damaging voltage spikes.
Industrial Equipment
Providing robust overvoltage protection in industrial control systems and sensors operating in harsh electrical environments.
Consumer Electronics
Enhancing the reliability and longevity of consumer devices by protecting against transient surges.
Telecommunications Equipment
Used in telecommunication infrastructure to protect sensitive networking components from line surges.
Key Specifications
Fail Short
No
Mounting Type
Surface Mount
Package / Case
1812 (4532 Metric)
Number of Poles
2
Voltage - DC Spark Over (Nom)
90 V
Impulse Discharge Current (8/20us)
2000A (2kA)
