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 SIDACtor MicroCapacitance
Datasheet
4.038In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.500

50 mA SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 30V 2.5kA Bi-Dir
Datasheet
1.721In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3.000

45 V 800 mA 250 A 30 V 5 uA 50 mA 4 V 150 pF - 65 C + 150 C SMD/SMT DO-214AB Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 50A 25V
Datasheet
4.506In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.500

40 V 800 mA 20 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
2.676In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.500

50 mA SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD Modified TO-220 SIDACtor
Datasheet
1.383In 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 SIDACtor Bi 58V 3000A DO214AB RoHS
Datasheet
3.656In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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 Bi 180V 5000A
Datasheet
240In 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 HIGH SURGE 220V 1000A
Datasheet
3.317In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.500

300 V 800 mA 50 A 220 V 5 uA 50 mA 4 V 50 pF to 75 pF - 40 C + 85 C SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 50A 275V
Datasheet
8.997In Stock
5.000Expected 4/28/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.500

350 V 800 mA 20 A 275 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 100A 275V
Datasheet
11.472In Stock
5.000Expected 3/11/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.500

350 V 800 mA 25 A 275 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 HIGH SURGE 275V 1000A
Datasheet
2.775In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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 3Chp 270V 100A
Datasheet
861In Stock
Min.: 1
Mult.: 1

350 V 800 mA 30 A 270 V 5 uA 150 mA 8 V 10 pF to 45 pF, 20 pF to 70 pF - 40 C + 85 C Through Hole TO-220-2 Bulk

Littelfuse Thyristor Surge Protection Devices - TSPD 19V 80A SOT23-6L Sidactor
Datasheet
5.000In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3.000

40 mA SMD/SMT SOT-23-6 Reel, Cut Tape, MouseReel

Littelfuse Thyristor Surge Protection Devices - TSPD 24V 30A
Datasheet
1.963In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3.000

24 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 100A 6V
Datasheet
2.555In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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
1.199In Stock
5.000Expected 5/21/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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
643In Stock
2.500Expected 3/11/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.500

50 mA SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 50A 25V
Datasheet
1.073In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.500

50 mA SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 100A 25V
Datasheet
3.057In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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
2.925In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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 50A 58V
Datasheet
1.940In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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
Reel: 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
1.243In Stock
5.000Expected 4/1/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2.500

77 V 800 mA 50 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 50A 65V
Datasheet
2.590In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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 65V
Datasheet
2.839In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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