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 30A 8V Baseband Voice-DS1
Datasheet
12In Stock
5,000Expected 28/10/2026
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

25 V 800 mA 20 A 6 V 5 uA 50 mA 4 V 25 pF to 35 pF - 40 C + 85 C SMD/SMT DO-214AC Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 100mA 500A Dual Negative
Datasheet
698In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

100 mA - 40 C + 125 C SMD/SMT Modified-MS-013-6 Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 50A 25V
Datasheet
1,061In 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 25V
Datasheet
432In Stock
2,500Expected 10/08/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

40 V 800 mA 30 A 25 V 5 uA 50 mA 4 V 110 pF - 40 C + 85 C SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 500A 25V
Datasheet
2,251In Stock
5,000Expected 09/09/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

40 V 800 mA 50 A 25 V 5 uA 50 mA 4 V 110 pF - 40 C + 85 C SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 500A 25V 25-45pF
Datasheet
1,744In Stock
2,500Expected 30/11/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

50 mA SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD Modified TO-220 SIDACtor
Datasheet
920In Stock
Min.: 1
Mult.: 1

40 V, 80 V 800 mA 20 A 25 V, 50 V 5 uA 50 mA 4 V 10 pF to 20 pF, 15 pF to 145 pF - 40 C + 85 C Through Hole TO-220-2 Bulk
Littelfuse Thyristor Surge Protection Devices - TSPD 50A 58V
Datasheet
57In Stock
5,000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

77 V 800 mA 20 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 500A 58V
Datasheet
1,241In 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 500A 58V
Datasheet
255In 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 58V 1000A
Datasheet
2,269In Stock
2,500Expected 13/08/2026
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
117In Stock
5,000Expected 03/11/2026
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 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 500A 90V
Datasheet
2,243In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

130 V 800 mA 50 A 95 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 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 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
2,500Expected 13/08/2026
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 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 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 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