SG420 Gas Discharge Tubes – Reliable Surge Protection by Littelfuse
The Gas Discharge Tubes (GDTs) / Gas Plasma Arrestors SG420 by Littelfuse are designed to provide reliable overvoltage and surge protection in sensitive circuits. As part of the Circuit Protection category, these components are widely used in telecom, power supplies, industrial systems, and consumer electronics. With their robust design, SG420 GDTs ensure long-term reliability and safety.
This article covers the technical specifications, features, applications, connection details, use case example, datasheet access, and why buying from XON Electronics is the best choice.
1. Technical Specifications of SG420
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Manufacturer: Littelfuse
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Part Number: SG420
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Type: Gas Discharge Tubes - GDTs / Gas Plasma Arrestors
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Category: Circuit Protection
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DC Breakdown Voltage: ~420V
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Response Time: < 1 µs
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Insulation Resistance: = 10 GO
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Capacitance: < 1 pF
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Operating Temperature Range: -40°C to +90°C
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Applications: Surge protection for telecom, power, and data systems
2. Key Features of SG420
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Fast response to transient overvoltage events
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High insulation resistance and low capacitance
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Compact design for space-constrained circuits
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Long-term durability with stable performance
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Ideal for high-frequency and broadband applications
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Reliable protection in both industrial and consumer devices
The SG420 Gas Discharge Tubes - GDTs / Gas Plasma Arrestors stand out in the Circuit Protection family for their efficiency and stability.
3. Applications of SG420
The SG420 by Littelfuse is suitable for:
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Telecom line and network protection
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Power supply and distribution systems
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Industrial automation equipment
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Consumer electronics safety circuits
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Data and communication devices
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Renewable energy and smart grid systems
4. Connection and Integration Overview
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Integrated into PCB layouts for surge protection
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Compatible with high-frequency applications due to low capacitance
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Can be used in parallel with other protective devices
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Ensures stable operation under repetitive surge conditions
5. Use Case Scenario: Telecom Surge Protection
Scenario: A telecom provider needed robust protection for sensitive communication lines.
Problem: Frequent surges caused equipment damage and costly repairs.
Solution: The SG420 Gas Discharge Tubes provided reliable surge suppression.
Result: Improved system uptime, reduced downtime, and cost savings.
6. Download Datasheet for SG420
Download SG420 Datasheet from XON Electronics
7. Why Buy from XON Electronics?
At XON Electronics, we provide genuine Littelfuse products like the SG420 with:
- Authentic Gas Discharge Tubes - GDTs / Gas Plasma Arrestors
- Worldwide shipping – USA, India, Australia, Europe & more
- Competitive pricing for OEMs and bulk buyers
- Technical support and integration help
- Secure and trusted ordering process
8. Also Available from Other Manufacturers
In addition to Littelfuse, XON Electronics also offers Gas Discharge Tubes - GDTs / Gas Plasma Arrestors from:
This ensures customers have a wide selection of Circuit Protection components to meet their needs.
9. FAQs – SG420 Gas Discharge Tubes
Q1. What is the breakdown voltage of SG420?
Around 420V.
Q2. What applications are suitable for SG420?
Telecom, industrial, power supplies, and consumer electronics.
Q3. Does SG420 have low capacitance?
Yes, < 1 pF, making it suitable for high-frequency circuits.
Q4. Can it withstand multiple surge events?
Yes, it is designed for long-term surge reliability.
Q5. Where can I buy SG420?
At www.xonelec.com with global delivery.
Conclusion
The SG420 Gas Discharge Tubes - GDTs / Gas Plasma Arrestors by Littelfuse are a trusted solution for protecting sensitive electronics from surge events. As part of the Circuit Protection family, these devices combine durability, efficiency, and compact design for reliable performance.
Buy now at XON Electronics for genuine Littelfuse components with worldwide delivery.