

Littelfuse SG series GDT offers high surge ratings in a miniature package. It's designed for surface mounting on PCB with small size 4.5x3.2x2.7mm. Low insertion loss is perfectly suited to broadband equipment applications.
The capacitance does not vary with voltage, and will not cause operational problems with ADSL2+, where capacitance variation across Tip and Ring is undesirable. These devices are extremely robust and are able to divert a 1000A pulse without destruction.
The capacitance does not vary with voltage, and will not cause operational problems with ADSL2+, where capacitance variation across Tip and Ring is undesirable. These devices are extremely robust and are able to divert a 1000A pulse without destruction.
- Lead-free and RoHS compliant
- GHz working frequency
- Excellent stability on multiple pulse duty cycle
- Excellent response to fast rising transients
- Ultra-low Insertion Loss
- 1-2 kA surge capability tested with 8/20 uS pulse as defined by IEC 8100-4-5
- Ultra-small devices offered in a variety of mounting lead forms
- Nonradioactive
- Low capacitance
- Voltage ranges from 75 V to 420 V
SG Parts
Filters
Showing 1 to 12 of 14 Total Results
Part Number | Actions | VMIN Spark (V) | VNom Spark (V) | VMAX Spark (V) | Max Impulse Sparkover Voltage @ 100V/µs (V) | Max Impulse Breakdown Voltage @ 1kV/µs (V) | Insulation Resistance (Ω) | Capacitance (Co) (pF) | Impulse Discharge Current @8/20µs (kA) | Electrodes | Failsafe | Insulation Resistance (Voltage Rating) | Operating Temperature |
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Part Number | Actions | VMIN Spark (V) | VNom Spark (V) | VMAX Spark (V) | Max Impulse Sparkover Voltage @ 100V/µs (V) | Max Impulse Breakdown Voltage @ 1kV/µs (V) | Insulation Resistance (Ω) | Capacitance (Co) (pF) | Impulse Discharge Current @8/20µs (kA) | Electrodes | Failsafe | Insulation Resistance (Voltage Rating) | Operating Temperature | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
105 | 150 | 195 | 500 | 600 | 1 | 1 | 1 | 2 | No | 100 | -40° to 90°C | |||
172 | 230 | 288 | 650 | 800 | 1 | 1 | 1 | 2 | No | 100 | -40° to 90°C | |||
225 | 300 | 375 | 700 | 850 | 1 | 1 | 1 | 2 | No | 100 | -40° to 90°C | |||
210 | 300 | 390 | 580 | 650 | 1 | 1 | 1 | 2 | No | 100 | -40° to 90°C | |||
263 | 350 | 437 | 750 | 900 | 1 | 0.8 | 1 | 2 | No | 100 | -40° to 90°C | |||
263 | 350 | 437 | 600 | 700 | 1 | 0.8 | 1 | 2 | No | 100 | -40° to 90°C | |||
300 | 400 | 500 | 800 | 950 | 1 | 0.8 | 1 | 2 | No | 100 | -40° to 90°C | |||
315 | 420 | 525 | 800 | 1000 | 1 | 1 | 1 | 2 | No | 100 | -40° to 90°C | |||
315 | 420 | 525 | 650 | 750 | 1 | 1 | 1 | 2 | No | 100 | -40° to 90°C | |||
370 | 450 | 550 | 680 | 750 | 1 | 1 | 1 | 2 | No | 100 | -40° to 90°C | |||
400 | 500 | 600 | 900 | 1050 | 1 | 0.5 | 1 | 2 | No | 100 | -40° to 90°C | |||
450 | 600 | 750 | 1100 | 1200 | 1 | 1 | 1 | 2 | No | 100 | -40° to 90°C |
SG Applications
- Communication equipment
- CATV equipment
- Text equipment
- Data lines
- Power supplies
- Telecom SLIC protection
- Broadband equipment
- ADSL equipment including ADSL2+
- XDSL equipment
- Satellite and CATV equipment
Series: SG Resources

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Circuit Protection Selection Guide
Consult this guide to learn about circuit protection considerations and the solutions Littelfuse offers. Tables help match products with applications.