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 275V
Datasheet
744In Stock
10,000On Order
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 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 500A 320V
Datasheet
1,788In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

400 V 800 mA 30 A 320 V 5 uA 150 mA 4 V 25 pF to 40 pF - 40 C + 85 C SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 500A 320V
Datasheet
1,931In 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 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
235In 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
1,741In Stock
2,500On Order
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 Bi 22V 500A DO214 2L
Datasheet
4,706On Order
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

50 mA SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 50A 65V
Datasheet
5,000On Order
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 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 100A 220V
Datasheet
4,995Expected 27/10/2026
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 24V 30A
Datasheet
2,983Expected 30/11/2026
MouseReel Available
Min.: 1
Mult.: 1
: 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 400V 500A SIDACtor DO-214AA
Datasheet
1,457Expected 07/09/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

530 V 800 mA 400 V 5 uA 150 mA 4 V 65 pF - 65 C + 150 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.: 1
Mult.: 1

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 120V
Datasheet
2,000Factory Stock Available
More Info Available
Min.: 2,000
Mult.: 2,000
: 2,000

160 V 800 mA 20 A 120 V 5 uA 150 mA 4 V 25 pF to 60 pF - 40 C + 85 C Through Hole TO-92 Reel
Littelfuse Thyristor Surge Protection Devices - TSPD Modified TO-220 SIDACtor
Datasheet
500Factory Stock Available
More Info Available
Min.: 500
Mult.: 500

95 V, 190 V 800 mA 20 A 65 V, 130 V 5 uA 150 mA 4 V 20 pF to 35 pF, 35 pF to 60 pF - 40 C + 85 C Through Hole TO-220-2 Bulk
Littelfuse Thyristor Surge Protection Devices - TSPD 3Chp 200V 500A
Datasheet
500Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

270 V 800 mA 50 A 200 V 5 uA 150 mA 8 V 10 pF to 25 pF, 15 pF to 35 pF - 40 C + 85 C Through Hole TO-220-2 Bulk
Littelfuse Thyristor Surge Protection Devices - TSPD 190/380V 50A TO220A SIDACtor SYM 2Chp
Datasheet
500Factory Stock Available
More Info Available
Min.: 500
Mult.: 500

250 V, 500 V 800 mA 20 A 190 V, 380 V 5 uA 150 mA 4 V 10 pF to 20 pF, 25 pF to 35 pF - 40 C + 85 C Through Hole TO-220-2 Bulk
Littelfuse Thyristor Surge Protection Devices - TSPD 2Chp 275/550V 100A
Datasheet
700Factory Stock Available
More Info Available
Min.: 700
Mult.: 700
: 700

350 V, 700 V 800 mA 25 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 Reel
Littelfuse Thyristor Surge Protection Devices - TSPD 2Chp 275/550V 500A
Datasheet
700Factory Stock Available
More Info Available
Min.: 700
Mult.: 700
: 700

350 V, 700 V 800 mA 50 A 275 V, 550 V 5 uA 150 mA 4 V 15 pF to 25 pF, 30 pF to 45 pF - 40 C + 85 C Through Hole TO-220-2 Reel
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