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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Description Datasheet Availability Pricing (EUR) Filter the results in the table by unit price based on your quantity.
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 190V
Datasheet
2.500In 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 500A 220V
Datasheet
1.716In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 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
: 2.500

150 mA 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 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 380V 50A DO214 2L SIDACtor Bi
Datasheet
231In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 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 500A 440V Opt 440/600 RTG C
Datasheet
375In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

120 mA SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD P6002ABL
Datasheet
39In 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 550V 50A DO214 2L SIDACtor Bi
Datasheet
2.041In Stock
2.500Expected 6/15/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

700 V 800 mA 20 A 550 V 5 uA 120 mA 8 V 10 pF to 25 pF - 40 C + 85 C SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 50A 90V
Datasheet
154In Stock
Min.: 1
Mult.: 1

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 Bulk
Littelfuse Thyristor Surge Protection Devices - TSPD 3Chp 300V 100A
Datasheet
97In Stock
Min.: 1
Mult.: 1

400 V 800 mA 30 A 300 V 5 uA 150 mA 8 V 10 pF to 45 pF, 15 pF to 65 pF - 40 C + 85 C Through Hole TO-220-2 Bulk
Littelfuse Thyristor Surge Protection Devices - TSPD 50A 65V
Datasheet
1In Stock
5.000Expected 7/23/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

88 V 800 mA 20 A 65 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 500A 6V
Datasheet
9.254Expected 5/25/2026
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 58V 1000A
Datasheet
4.800On Order
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

77 V 800 mA 50 A 58 V 5 uA 50 mA 4 V 100 pF to 160 pF - 40 C + 85 C SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 500A 65V
Datasheet
2In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

150 mA SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 500A 90V
Datasheet
24.992On Order
MouseReel Available
Min.: 1
Mult.: 1
: 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 Power Inserters 5 kA SIDACtor
Datasheet
500Expected 9/28/2026
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 100A 220V
Datasheet
1In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 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 275V
Datasheet
5.000Expected 5/25/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

350 V 800 mA 30 A 275 V 5 uA 150 mA 4 V 30 pF to 70 pF - 40 C + 85 C SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD HIGH SURGE 275V 1000A
Datasheet
2.725Expected 6/22/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

350 V 800 mA 50 A 275 V 5 uA 50 mA 4 V 45 pF to 70 pF - 40 C + 85 C SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 350V 5000A TO218
Datasheet
462On Order
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 Bi 22V 500A DO214 2L
Datasheet
2.452Expected 6/17/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

50 mA SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 500A 120V
Datasheet
2.500Expected 8/19/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2.500

160 V 800 mA 50 A 120 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 100A 120/240V
Datasheet
500Stock Available
More Info Available
Min.: 1
Mult.: 1

160 V, 320 V 800 mA 30 A 120 V, 240 V 5 uA 150 mA 4 V 15 pF to 60 pF, 25 pF to 105 pF - 40 C + 85 C Through Hole TO-220-2 Bulk