حفاظت مدار برق‌گیر گازی (جی دی تی)

Product Attributes

Introduction

Gas discharge tubes normally maintain a high insulation resistance state, equivalent to an open circuit, with negligible impact on normal circuit operation. When a transient overvoltage occurs in the circuit and its amplitude exceeds the breakdown voltage of the gas discharge tube, the gas inside is ionized, causing the tube to conduct rapidly and clamp the overvoltage to a lower level, thereby protecting parallel-connected electronic equipment or circuit components from damage due to high-voltage transients. Once the overvoltage subsides, the gas discharge tube immediately returns to its high insulation resistance state and normal circuit operation resumes. The SMD4532 series gas discharge tubes feature surface mount packaging. They are not only compact in size and easy to install on various space-constrained PCBs, but also deliver excellent performance. Their low capacitance characteristic minimizes signal interference in high-frequency communication circuits. The high insulation resistance ensures no additional performance loss under normal operating conditions. The SMD4532 series gas discharge tubes are suitable not only for protecting communication interfaces, but their ability to withstand high surge currents also makes them well-suited for power supply protection.

Features

• Excellent response to fast-rising transient voltages
• Stable breakdown voltage
• Operating frequency up to GHz range
• 8/20μs pulse current capability: 2KA
• Surface mount package
• Non-radioactive
• Ultra-low capacitance and insertion loss
• Very compact size: 4.5mm×3.2mm×2.7mm

Applications

• Communication equipment
• Test equipment
• Data lines
• Power supplies
• Telecom SLIC protection