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 500A 90V
Datasheet
1,250In Stock
2,500Expected 21-05-2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

130 V 800 mA 50 A 90 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 1000A 90V
Datasheet
387In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

130 V 800 mA 50 A 90 V 5 uA 50 mA 4 V 75 pF to 115 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
580In 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 Power Inserters 5 kA SIDACtor
Datasheet
214In Stock
Min.: 1
Mult.: 1

180 V 800 mA 400 A 140 V 5 uA 50 mA 4 V 400 pF to 650 pF - 40 C + 85 C Through Hole SMTO-218 Tube
Littelfuse Thyristor Surge Protection Devices - TSPD 50A 140V
Datasheet
1,983In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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 100A 140V
Datasheet
481In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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 500A 140V
Datasheet
2,582In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

180 V 800 mA 50 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 500A 170V
Datasheet
1,084In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

220 V 800 mA 50 A 170 V 5 uA 150 mA 4 V 30 pF - 40 C + 85 C SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD HIGH SURGE 170V 1000A
Datasheet
523In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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 Bi 140V 5000A
Datasheet
191In Stock
Min.: 1
Mult.: 1

220 V 800 mA 400 A 155 V 5 uA 50 mA 4 V 400 pF to 650 pF - 40 C + 85 C Through Hole SMTO-218 Tube
Littelfuse Thyristor Surge Protection Devices - TSPD 190V 100A DO214 2L
Datasheet
380In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

240 V 800 mA 25 A 180 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 Bi 180V 5000A
Datasheet
235In Stock
Min.: 1
Mult.: 1

260 V 800 mA 400 A 180 V 5 uA 50 mA 4 V 350 pF to 600 pF - 40 C + 85 C Through Hole SMTO-218 Tube
Littelfuse Thyristor Surge Protection Devices - TSPD 100A 220V
Datasheet
371In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

300 V 800 mA 25 A 220 V 5 uA 150 mA 4 V 20 pF to 45 pF - 40 C + 85 C SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 500A 220V
Datasheet
1,794In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

300 V 800 mA 30 A 220 V 5 uA 150 mA 4 V 30 pF to 80 pF - 40 C + 85 C SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 500A 275V MC=MICRO CAPACITANCE
Datasheet
447In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

150 mA SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 50A 320V
Datasheet
2,891In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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 380V 50A DO214 2L SIDACtor Bi
Datasheet
241In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

500 V 800 mA 20 A 380 V 5 uA 120 mA 8 V 15 pF to 30 pF - 40 C + 85 C SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 380V 500A 2L BI SIDACtor DO214
Datasheet
1,915In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

500 V 2.2 A 800 mA 380 V 5 uA 120 mA 8 V 15 pF - 40 C + 150 C SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 500A 440V Opt 440/600 RTG C
Datasheet
375In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

120 mA SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD P6002ABL
Datasheet
294In Stock
Min.: 1
Mult.: 1

350 V, 700 V 800 mA 30 A 275 V, 550 V 5 uA 150 mA 4 V 10 pF to 45 pF, 20 pF to 80 pF - 40 C + 85 C Through Hole TO-220-2 Bulk
Littelfuse Thyristor Surge Protection Devices - TSPD 500A 65V
Datasheet
2In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

150 mA SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 350V 5000A TO218
Datasheet
250Expected 23-02-2026
Min.: 1
Mult.: 1

430 V 800 mA 400 A 350 V 5 uA 50 mA 4 V 300 pF to 500 pF - 40 C + 85 C Through Hole SMTO-218 Tube
Littelfuse Thyristor Surge Protection Devices - TSPD 500A 190V
Datasheet
2,497Expected 22-05-2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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 25/50V 500A TO220A SIDACtor SYM 2Chp
Datasheet
500Factory Stock Available
More Info Available
Min.: 500
Mult.: 500

50 V 5 uA 50 mA 25 pF - 40 C + 150 C Through Hole TO-220-2 Bulk
Littelfuse Thyristor Surge Protection Devices - TSPD 50A 90V
Datasheet
2,000Factory Stock Available
More Info Available
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,000

130 V 800 mA 20 A 90 V 5 uA 150 mA 4 V 30 pF to 50 pF - 40 C + 85 C Through Hole TO-92 Reel, Cut Tape, MouseReel