
High Exposure Surge Protection

High Power SIDACtor® protection thyristors offer ideal solutions for suppressing transient voltage surges in areas with high exposure to lightning strikes. Littelfuse makes several versions of these thyristors, including devices optimized to provide primary surge protection and meet international standards such as UL 497, GR-947, and ITU K.28. Other thyristors can protect ac power lines or outdoor telecommunications and networking equipment. We supply each of these thyristors in compact packages that mount easily on printed circuit boards and with peak repetitive forward voltage ratings as high as 550 V.
- Vdrm T-R from 5 V to 550 V
- Vs T-R from 25 V to 700 V
- Is(max) of 800 mA
- Hold currents of 50 mA or 150 mA
- Maximum off-state capacitance ratings below 650 pF
- Lead-free, halogen-free, and RoHS compliant
- Low voltage overshoot
- Low on-state voltage
- Fail to short circuit
- High holding current versions available
- Performance does not degrade over time or with use
High Exposure Surge Protection Parts
Filters
Showing 1 to 12 of 53 Total Results
Part Number | Actions | VDRM T-R (V) | VS T-R (V) | CO 2V T-R MAX (pF) | Pins Tip to Ring |
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Part Number | Actions | VDRM T-R (V) | VS T-R (V) | CO 2V T-R MAX (pF) | Pins Tip to Ring | |
---|---|---|---|---|---|---|
50 | 80 | 40 | 1-3 | |||
116 | 154 | 90 | 1-3 | |||
130 | 190 | 85 | 1-3 | |||
180 | 260 | 65 | 1-3 | |||
240 | 320 | 60 | 1-3 | |||
280 | 360 | 55 | 1-3 | |||
340 | 440 | 50 | 1-3 | |||
380 | 500 | 50 | 1-3 | |||
440 | 600 | 50 | 1-3 | |||
550 | 700 | 45 | 1-3 | |||
130 | 180 | 60 | 1-3 | |||
150 | 210 | 55 | 1-3 |
High Exposure Surge Protection Applications
- Base station equipment
- CATV amplifiers
- Cell towers
- Data interfaces
- EV chargers
- Power interfaces
- Solar inverters
- Uninterruptible power supplies
High Exposure Surge Protection Resources

Food and Beverage Capabilities Brochure
Find industrial fuses and relays to help minimize electrical safety hazards and improve productivity in food and beverage operations.

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

Data Center Selection Guide
A matrix at the center of this guide shows users how to protect and boost the operations of datacenter electronics by deploying Littelfuse solutions.