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 (USD) 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 120V DO-15
Datasheet
1,147In Stock
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 Through Hole DO-15 Reel, Cut Tape
Littelfuse Sidacs 130V
Datasheet
1,262In Stock
Min.: 1
Mult.: 1

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 Bulk
Littelfuse Sidacs 130V
Datasheet
748In Stock
2,500Expected 2026/12/03
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

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 SMD/SMT DO-214 Reel, Cut Tape, MouseReel
Littelfuse Sidacs 150V
Datasheet
3In Stock
Min.: 1
Mult.: 1

Kxxxzy Through Hole TO-92 Bulk
Littelfuse Sidacs 150V
Datasheet
1,591In Stock
Min.: 1
Mult.: 1

Kxxxzy Through Hole DO-15 Bulk
Littelfuse Sidacs 200V
Datasheet
240In Stock
Min.: 1
Mult.: 1

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 Bulk
Littelfuse Sidacs 220V
Datasheet
22In 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 DO-15 Bulk
Littelfuse Sidacs 240V
Datasheet
170In 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 TO-92 Bulk
Littelfuse Sidacs 240V
Datasheet
1,875In 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 250V
Datasheet
18In Stock
1,000Expected 2026/08/13
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 250V
Datasheet
1,769In 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 90V
Datasheet
930In Stock
Min.: 1
Mult.: 1

Kxxxxzy 79 V to 97 V 10 uA 16.7 A, 20 A 70 V 5 uA 150 mA 1.5 V - 40 C + 85 C Through Hole TO-92 Bulk
Littelfuse Sidacs Sidac 240V HI ENERGY
Datasheet
478In 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 TO-92 Bulk
Littelfuse Sidacs MP SIDAC 240V DO15
Datasheet
269In 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 SIDAC 300V
Datasheet
1,942Expected 2026/09/15
Min.: 1
Mult.: 1

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 Bulk
Littelfuse Sidacs 140V
Datasheet
2,000Factory Stock Available
More Info Available
Min.: 2,000
Mult.: 2,000

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 TO-92 Bulk
Littelfuse Sidacs 200V
Datasheet
2,000Factory Stock Available
More Info Available
Min.: 1
Mult.: 1

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 TO-92 Bulk
Littelfuse Sidacs 90V
Datasheet
Non-Stocked Lead-Time 14 Weeks
Min.: 1
Mult.: 1

Kxxxzy 79 V to 97 V 10 uA 16.7 A, 20 A 70 V 5 uA 150 mA 1.5 V - 40 C + 85 C Through Hole DO-15 Bulk
Littelfuse Sidacs 90V
Datasheet
Non-Stocked Lead-Time 14 Weeks
Min.: 5,000
Mult.: 5,000
: 5,000

Kxxxzy 79 V to 97 V 10 uA 16.7 A, 20 A 70 V 5 uA 150 mA 1.5 V - 40 C + 85 C Through Hole DO-15 Reel
Littelfuse Sidacs 9090 DO-214AC 2L
Datasheet
Non-Stocked Lead-Time 16 Weeks
MouseReel Available
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 SMD/SMT DO-214AC Reel, Cut Tape, MouseReel
Littelfuse Sidacs 90V
Datasheet
Non-Stocked Lead-Time 16 Weeks
Min.: 2,500
Mult.: 2,500
: 2,500

Kxxxzy 79 V to 97 V 10 uA 16.7 A, 20 A 70 V 5 uA 150 mA 1.5 V - 40 C + 85 C SMD/SMT DO-214 Reel
Littelfuse Sidacs Sidac 105V TO92
Datasheet
Non-Stocked Lead-Time 17 Weeks
Min.: 1
Mult.: 1
: 2,000

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 Reel, Cut Tape
Littelfuse Sidacs 105V
Datasheet
Non-Stocked Lead-Time 14 Weeks
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 DO-15 Bulk
Littelfuse Sidacs 105V
Datasheet
Non-Stocked Lead-Time 14 Weeks
MouseReel Available
Min.: 1
Mult.: 1
: 5,000

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 DO-15 Reel, Cut Tape, MouseReel
Littelfuse Sidacs 100V DO-15
Datasheet
Non-Stocked Lead-Time 14 Weeks
Min.: 5,000
Mult.: 5,000
: 5,000

Kxxx0yU 110 V 10 uA 1 A 90 V 5 uA 80 mA 1.5 V - 40 C + 125 C Through Hole DO-15 Reel