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 (TWD) 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 58V
Datasheet
1,191In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

77 V 800 mA 30 A 58 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 58V 1000A
Datasheet
1,894In Stock
2,500On 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 SIDACtor Bi 65V 3000A DO214AB RoHS
Datasheet
3,000In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000
800 mA 65 V 5 uA 50 mA 4 V 550 pF - 65 C + 125 C SMD/SMT DO-214AB-2 Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 500A 65V
Datasheet
1,817In Stock
2,500Expected 11/3/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

88 V 800 mA 50 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 75V
Datasheet
241In 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 75V
Datasheet
557In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

98 V 800 mA 20 A 75 V 5 uA 120 mA 5 V 70 pF - 40 C + 85 C SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD SIDACtor Bi 90V 3000A DO214AB RoHS
Datasheet
2,992In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000
800 mA 90 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 1000A 90V
Datasheet
287In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 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 SIDACtor Bi 120V 3000A DO214AB RoHS
Datasheet
3,003In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000
800 mA 120 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 SIDACtor Bi 140V 3000A DO214AB RoHS
Datasheet
2,998In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000
800 mA 140 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 500A 140V
Datasheet
2,682In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 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 140V
Datasheet
18In 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 HIGH SURGE 140V 1000A
Datasheet
886In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

180 V 800 mA 50 A 140 V 5 uA 50 mA 4 V 60 pF to 90 pF - 40 C + 85 C SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 160V 500A DO214 2L SIDACtor Uni
Datasheet
1,503In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

200 V 800 mA 50 A 160 V 5 uA 120 mA 4 V 40 pF to 130 pF - 40 C + 85 C SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 500A 170V
Datasheet
84In Stock
2,500On Order
MouseReel Available
Min.: 1
Mult.: 1
: 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 500A 170V
Datasheet
1,767In 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 Bi 140V 5000A
Datasheet
108In 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 SIDACtor Bi 155V 3000A DO214AB RoHS
Datasheet
2,961In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000
800 mA 155 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 190V 100A DO214 2L
Datasheet
380In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 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 SIDACtor Bi 180V 3000A DO214AB RoHS
Datasheet
1,747In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000
800 mA 180 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 500A 190V
Datasheet
1,998In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

260 V 800 mA 30 A 190 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 SIDACtor Bi 220V 3000A DO214AB RoHS
Datasheet
2,908In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000
800 mA 220 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 500A 220V
Datasheet
976In 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 SIDACtor Bi 275V 3000A DO214AB RoHS
Datasheet
2,508In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000
800 mA 320 V 5 uA 50 mA 4 V 450 pF - 65 C + 125 C SMD/SMT DO-214AB-2 Reel, Cut Tape, MouseReel