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 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
Littelfuse Thyristor Surge Protection Devices - TSPD SIDACtor Bi 350V 3000A DO214AB RoHS
Datasheet
693In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3 000
800 mA 350 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 380V 500A 2L BI SIDACtor DO214
Datasheet
3 145In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 500

500 V 2.2 A 800 mA 380 V 5 uA 120 mA 8 V 15 pF - 40 C + 150 C SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD SEP Ethernet 100A Biasd Protec. Device
Datasheet
5 166In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4 000

50 mA SMD/SMT QFN-2 Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD SEP Ethernet 100A Biasd Protec. Device
Datasheet
7 695In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 4 000

150 mA SMD/SMT QFN-2 Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 50A 6V
Datasheet
692In Stock
27 500On Order
MouseReel Available
Min.: 1
Mult.: 1
: 2 500

25 V 800 mA 20 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 DO-214AA SIDACtor devices
Datasheet
3 045In Stock
5 000Expected 06/07/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2 500

50 mA SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 100A 6V
Datasheet
2 105In Stock
2 500Expected 22/07/2026
MouseReel Available
Min.: 1
Mult.: 1
: 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 HIGH SURGE 6V 1000A
Datasheet
76In Stock
2 500Expected 27/07/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2 500

25 V 800 mA 50 A 6 V 5 uA 50 mA 4 V 50 pF to 150 pF - 40 C + 85 C 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
: 2 500

50 mA SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 500A 25V 25-45pF
Datasheet
1 370In Stock
2 500Expected 17/08/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2 500

50 mA SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 50A 58V
Datasheet
1 025In Stock
1 462Expected 16/09/2026
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 HIGH SURGE 58V 1000A
Datasheet
2 300In Stock
2 500Expected 04/06/2026
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
2 599In Stock
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 HIGH SURGE 65V 1000A
Datasheet
1 853In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 500

88 V 800 mA 50 A 65 V 5 uA 50 mA 4 V 100 pF to 150 pF - 40 C + 85 C SMD/SMT DO-214AA Reel, Cut Tape, MouseReel
Littelfuse Thyristor Surge Protection Devices - TSPD 500A 75V
Datasheet
861In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 500

98 V 800 mA 50 A 75 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 100A 140V
Datasheet
2 500In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 500

180 V 800 mA 30 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 170V
Datasheet
84In Stock
2 500Expected 08/09/2026
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 100A 220V
Datasheet
371In 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 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
Datasheet
4 730In Stock
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