SIDACtor® Protection Thyristors

Littelfuse SIDACtor® Protection Thyristors are thyristor devices used to protect sensitive circuits from electrical disturbances caused by lightning-induced surges, inductive-coupled spikes, and AC power fault conditions. The unique structure and characteristics of the thyristor are used to create an overvoltage protection device with precise and repeatable turn-on characteristics with low voltage overshoot and high surge current capabilities. SIDACtor components are solid state crowbar devices with a patented ion implant technology that ensures effective protection within nanoseconds. Littelfuse SIDACtor Protection Thyristors include a wide range of semiconductor protection thyristor over-voltage transient suppression devices designed to serve requirements of telecom and data networking equipment applications.

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Qty. RoHS ECAD Model Breakover Voltage VBO
Breakover Current IBO Max
Non Repetitive On-State Current
Rated Repetitive Off-State Voltage VDRM
Off-State Leakage Current @ VDRM IDRM
Holding Current Ih Max
On-State Voltage
Off-State Capacitance CO
Minimum Operating Temperature
Maximum Operating Temperature
Mounting Style
Package/Case
Qualification
Packaging
Littelfuse Thyristor Surge Protection Devices - TSPD 100A 140V
Datasheet
2,490In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

180 V 800 mA 30 A 140 V 5 uA 150 mA 4 V 40 pF - 40 C + 85 C SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 3Chp 230V 500A
Datasheet
486In Stock
Min.: 1
Mult.: 1

300 V 800 mA 50 A 230 V 5 uA 150 mA 8 V 15 pF to 50 pF, 25 pF to 75 pF - 40 C + 85 C Through Hole TO-220-2 Bulk
Littelfuse Thyristor Surge Protection Devices - TSPD 500A 75V
Datasheet
597In Stock
2,500Expected 20/08/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

98 V 800 mA 50 A 75 V 5 uA 150 mA 4 V 50 pF - 40 C + 85 C SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD HIGH SURGE 170V 1000A
Datasheet
1,770In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

220 V 800 mA 50 A 170 V 5 uA 50 mA 4 V 50 pF to 90 pF - 40 C + 85 C SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 100A 320V
Datasheet
43In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

400 V 800 mA 25 A 320 V 5 uA 150 mA 4 V 20 pF to 40 pF - 40 C + 85 C SMD/SMT DO-214AA Reel, Cut Tape, MouseReel

Littelfuse Thyristor Surge Protection Devices - TSPD 12V 30A
Datasheet
1,910In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

12 V 300 pA 40 mA 2.5 pF - 55 C + 150 C SMD/SMT SOT-23-6 Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD SIDACtor Bi 58V 3000A DO214AB RoHS
Datasheet
3,556In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

58 V 4 V 150 pF - 65 C + 150 C SMD/SMT DO-214AB-2 Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD HIGH SURGE 65V 1000A
Datasheet
1,853In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

88 V 800 mA 50 A 65 V 5 uA 50 mA 4 V 100 pF to 150 pF - 40 C + 85 C SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 50A 320V
Datasheet
2,876In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

400 V 800 mA 20 A 320 V 5 uA 150 mA 4 V 20 pF to 35 pF - 40 C + 85 C SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 58/116V 50A TO220A SIDACtor SYM 2Chp
Datasheet
520In Stock
Min.: 1
Mult.: 1

77 V, 154 V 800 mA 20 A 58 V, 116 V 5 uA 150 mA 4 V 20 pF to 35 pF, 40 pF to 60 pF - 40 C + 85 C Through Hole TO-220-2 Bulk
Littelfuse Thyristor Surge Protection Devices - TSPD 50A 140V
Datasheet
1,848In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

180 V 800 mA 20 A 140 V 5 uA 150 mA 4 V 40 pF - 40 C + 85 C SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 3Chp 130V 100A
Datasheet
500In Stock
Min.: 1
Mult.: 1

180 V 800 mA 30 A 130 V 5 uA 150 mA 8 V 15 pF to 60 pF, 25 pF to 95 pF - 40 C + 85 C Through Hole TO-220-2 Bulk
Littelfuse Thyristor Surge Protection Devices - TSPD 500A 190V
Datasheet
2,400In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

260 V 800 mA 20 A 190 V 5 uA 150 mA 4 V 25 pF to 35 pF - 40 C + 85 C SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD SEP ETHERNET 100A BIASED PROTECTN DEV
Datasheet
1,474In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4,000

150 mA SMD/SMT QFN-2 Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD HIGH SURGE 320V 1000A
Datasheet
1,923In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

400 V 800 mA 50 A 320 V 5 uA 50 mA 4 V 45 pF to 65 pF - 40 C + 85 C SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 2Chp 275/550V 500A
Datasheet
509In Stock
Min.: 1
Mult.: 1

350 V, 700 V 800 mA 50 A 275 V, 550 V 5 uA 150 mA 4 V 15 pF to 45 pF, 30 pF to 80 pF - 40 C + 85 C Through Hole TO-220-2 Bulk
Littelfuse Thyristor Surge Protection Devices - TSPD TSPD DO214 170V 3KA SIDACTR
Datasheet
2,995In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

800 mA 170 V 5 uA 50 mA 4 V 450 pF - 65 C + 125 C SMD/SMT DO-214AB-2 Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 6V 50A QFN 3X3 2L SIDACtor Bi
Datasheet
19,120In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

50 mA SMD/SMT QFN-2 Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD SIDACtor Bi 6V 100A SOD123FL RoHS
Datasheet
5,183In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

20 A 6 V 5 uA 50 mA 4 V 15 pF Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 50A 6V
Datasheet
14,992In Stock
15,000Expected 25/11/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

25 V 800 mA 20 A 6 V 5 uA 50 mA 4 V 100 pF - 40 C + 85 C SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD DO-214AA SIDACtor devices
Datasheet
5,345In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

50 mA SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 100A 6V
Datasheet
4,035In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

25 V 800 mA 30 A 6 V 5 uA 50 mA 4 V 100 pF - 40 C + 85 C SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 500A 6V
Datasheet
11,932In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

25 V 800 mA 50 A 6 V 5 uA 50 mA 4 V 100 pF - 40 C + 85 C SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 500A 6V
Datasheet
8,424In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

50 mA SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD HIGH SURGE 6V 1000A
Datasheet
2,566In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

25 V 800 mA 50 A 6 V 5 uA 50 mA 4 V 50 pF to 150 pF - 40 C + 85 C SMD/SMT DO-214AA Reel, Cut Tape, MouseReel