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 (GBP) 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 150V
Datasheet
6In Stock
Min.: 1
Mult.: 1

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

Kxxxzy Through Hole DO-15 Bulk
Littelfuse Sidacs 150V
Datasheet
2,644In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 2,500

Kxxxzy SMD/SMT DO-214 Reel, Cut Tape, MouseReel
Littelfuse Sidacs 200V
Datasheet
260In 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 SIDAC 200V HI ENERGY
Datasheet
959In 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
69In Stock
2,000Expected 27/03/2026
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 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 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 250V
Datasheet
369In 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 SIDAC 300V
Datasheet
398In Stock
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 120V DO-15
Datasheet
1,147In Stock
Min.: 1
Mult.: 1
Reel: 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 105V
Datasheet
10,000On Order
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 120V
Datasheet
1,888Expected 15/06/2026
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
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
Reel: 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
Reel: 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
Reel: 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
Reel: 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
Min.: 5,000
Mult.: 5,000
Reel: 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
Littelfuse Sidacs 100V DO-15
Datasheet
Non-Stocked Lead-Time 14 Weeks
Min.: 1
Mult.: 1
Reel: 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, Cut Tape
Littelfuse Sidacs 100V DO-214AC 2L
Datasheet
Non-Stocked Lead-Time 16 Weeks
Min.: 5,000
Mult.: 5,000
Reel: 5,000

Kxxx0yU 110 V 10 uA 1 A 90 V 5 uA 80 mA 1.5 V - 40 C + 125 C SMD/SMT DO-214AC Reel
Littelfuse Sidacs 110V
Datasheet
Non-Stocked Lead-Time 17 Weeks
Min.: 2,000
Mult.: 2,000

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 TO-92 Bulk