K Series SIDACs

Littelfuse K Series SIDACs are bidirectional voltage triggered switches. Constructed with glass-passivated junctions, the K SIDACs provide reliable performance even in harsh operating environments. With a one-cycle surge current capability up to 20A, K Series SIDACs are ideal for dumping charged capacitors through an inductor in order to generate high-voltage pulses. 

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Description Datasheet Availability Pricing (THB) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Series
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
Minimum Operating Temperature
Maximum Operating Temperature
Mounting Style
Package/Case
Packaging
Littelfuse Sidacs 105V
Datasheet
6,797In Stock
6,000Expected 8/18/2026
Min.: 1
Mult.: 1

Kxxxzy 95 V to 113 V 10 uA 16.7 A, 20 A 90 V 5 uA 150 mA 1.5 V - 40 C + 85 C Through Hole TO-92 Bulk
Littelfuse Sidacs 90V DO-15
Datasheet
4,388In Stock
Min.: 1
Mult.: 1
: 5,000

Kxxx0yU 97 V 10 uA 1 A 70 V 5 uA 80 mA 1.5 V - 40 C + 125 C Through Hole DO-15 Reel, Cut Tape
Littelfuse Sidacs 120V DO-214AC 2L
Datasheet
3,511In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

Kxxx0yU 125 V 10 uA 1 A 100 V 5 uA 80 mA 1.5 V - 40 C + 125 C SMD/SMT DO-214AC Reel, Cut Tape, MouseReel
Littelfuse Sidacs 80V DO-15
Datasheet
4,774In Stock
Min.: 1
Mult.: 1
: 5,000

Kxxx0yU 90 V 10 uA 1 A 70 V 5 uA 80 mA 1.5 V - 40 C + 125 C Through Hole DO-15 Reel, Cut Tape
Littelfuse Sidacs 80V DO-214AC 2L
Datasheet
5,430In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

Kxxx0yU 90 V 10 uA 1 A 70 V 5 uA 80 mA 1.5 V - 40 C + 125 C SMD/SMT DO-214AC Reel, Cut Tape, MouseReel
Littelfuse Sidacs 110V
Datasheet
4,960In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Kxxxzy 104 V to 118 V 10 uA 16.7 A, 20 A 90 V 5 uA 150 mA 1.5 V - 40 C + 85 C SMD/SMT DO-214 Reel, Cut Tape, MouseReel
Littelfuse Sidacs 220V
Datasheet
2,664In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Kxxxzy 205 V to 230 V 10 uA 16.7 A, 20 A 90 V 5 uA 150 mA 1.5 V - 40 C + 85 C SMD/SMT DO-214 Reel, Cut Tape, MouseReel
Littelfuse Sidacs 200V DO-15
Datasheet
4,333In Stock
Min.: 1
Mult.: 1
: 5,000

Kxxx0yU 210 V 10 uA 1 A 170 V 5 uA 80 mA 1.5 V - 40 C + 125 C Through Hole DO-15 Reel, Cut Tape
Littelfuse Sidacs 250V
Datasheet
19,338In Stock
Min.: 1
Mult.: 1

Kxxxzy 240 V to 280 V 10 uA 16.7 A, 20 A 200 V 5 uA 150 mA 1.5 V - 40 C + 85 C Through Hole TO-92 Bulk
Littelfuse Sidacs MP SIDAC 240V DO15
Datasheet
3,470In Stock
Min.: 1
Mult.: 1
: 5,000
Kxxxzy 220 V to 250 V 10 uA 16.7 A, 20 A 190 V 5 uA 150 mA 1.5 V - 40 C + 85 C Through Hole DO-15 Reel, Cut Tape
Littelfuse Sidacs SIDAC 250V HI ENERGY
Datasheet
4In Stock
Min.: 1
Mult.: 1

Kxxxzy 240 V to 280 V 10 uA 16.7 A, 20 A 200 V 5 uA 150 mA 1.5 V - 40 C + 85 C Through Hole DO-15 Bulk
Littelfuse Sidacs 110V
Datasheet
357In Stock
Min.: 1
Mult.: 1

Kxxxzy 104 V to 118 V 10 uA 16.7 A, 20 A 90 V 5 uA 150 mA 1.5 V - 40 C + 85 C Through Hole DO-15 Bulk
Littelfuse Sidacs 140V
Datasheet
577In Stock
Min.: 1
Mult.: 1

Kxxxzy 130 V to 146 V 10 uA 16.7 A, 20 A 90 V 5 uA 150 mA 1.5 V - 40 C + 85 C Through Hole DO-15 Bulk
Littelfuse Sidacs 240V
Datasheet
1,390In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Kxxxzy 250 V 10 uA 20 A 190 V 5 uA 150 mA 1.5 V - 40 C + 85 C SMD/SMT DO-214 Reel, Cut Tape, MouseReel
Littelfuse Sidacs 220V
Datasheet
2,064In Stock
Min.: 1
Mult.: 1

Kxxxzy 205 V to 230 V 10 uA 16.7 A, 20 A 180 V 5 uA 150 mA 1.5 V - 40 C + 85 C Through Hole TO-92 Bulk
Littelfuse Sidacs 250V
Datasheet
1,791In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Kxxxzy 240 V to 280 V 10 uA 16.7 A, 20 A 200 V 5 uA 150 mA 1.5 V - 40 C + 85 C SMD/SMT DO-214 Reel, Cut Tape, MouseReel
Littelfuse Sidacs 200V
Datasheet
4,981In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

Kxxxzy 190 V to 215 V 10 uA 16.7 A, 20 A 180 V 5 uA 150 mA 1.5 V - 40 C + 85 C Through Hole DO-15 Reel, Cut Tape, MouseReel
Littelfuse Sidacs SIDAC 300V
Datasheet
4,872In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

Kxxxzy 270 V to 330 V 10 uA 16.7 A, 20 A 200 V 5 uA 150 mA 1.5 V - 40 C + 85 C Through Hole DO-15 Reel, Cut Tape, MouseReel
Littelfuse Sidacs SIDAC 240V HI ENERGY
Datasheet
1,123In Stock
Min.: 1
Mult.: 1

Kxxxzy 220 V to 250 V 10 uA 16.7 A, 20 A 190 V 5 uA 150 mA 1.5 V - 40 C + 85 C Through Hole DO-15 Bulk
Littelfuse Sidacs 130V
Datasheet
4,978In Stock
Min.: 1
Mult.: 1
: 5,000

Kxxxzy 120 V to 130 V 10 uA 16.7 A, 20 A 90 V 5 uA 150 mA 1.5 V - 40 C + 85 C Through Hole DO-15 Reel, Cut Tape
Littelfuse Sidacs 150V
Datasheet
2,434In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Kxxxzy SMD/SMT DO-214 Reel, Cut Tape, MouseReel
Littelfuse Sidacs 200V
Datasheet
3,070In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Kxxxzy 190 V to 215 V 10 uA 16.7 A, 20 A 180 V 5 uA 150 mA 1.5 V - 40 C + 85 C SMD/SMT DO-214 Reel, Cut Tape, MouseReel
Littelfuse Sidacs 240V
Datasheet
2,485In Stock
Min.: 1
Mult.: 1

Kxxxzy 220 V to 250 V 10 uA 16.7 A, 20 A 190 V 5 uA 150 mA 1.5 V - 40 C + 85 C Through Hole DO-15 Bulk
Littelfuse Sidacs 105V
Datasheet
271In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

Kxxxzy 95 V to 113 V 10 uA 16.7 A, 20 A 90 V 5 uA 150 mA 1.5 V - 40 C + 85 C SMD/SMT DO-214 Reel, Cut Tape, MouseReel
Littelfuse Sidacs 120V
Datasheet
2,021In Stock
2,000Expected 9/15/2026
Min.: 1
Mult.: 1

Kxxxzy 110 V to 125 V 10 uA 16.7 A, 20 A 90 V 5 uA 150 mA 1.5 V - 40 C + 85 C Through Hole TO-92 Bulk