TBU® Circuit Protection Devices

Bourns TBU® Circuit Protection Devices block transients in nanoseconds through a current-disconnecting mechanism instead of diverting or shunting the surge to ground. These high-speed surge protection components are designed to protect against faults caused by short circuits, AC power cross, induction, and lightning surges. Bourns TBU Circuit Protection Devices are resettable for full functionality after multiple fault events and ideal for telecommunications, industrial, and data communications systems.

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Description Datasheet Availability Pricing (JPY) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Termination Style
Package / Case
Voltage Rating
Current Rating
Minimum Operating Temperature
Maximum Operating Temperature
Packaging
Bourns Board Mount Surge Protectors Dual Unidirectional TBU Device
Datasheet
5,836In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN 850 V 400 mA - 40 C + 85 C Reel, Cut Tape, MouseReel
Bourns Board Mount Surge Protectors Dual Unidirectional TBU Device
Datasheet
7,841In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN 850 V 600 mA - 40 C + 85 C Reel, Cut Tape, MouseReel
Bourns Board Mount Surge Protectors 180mA 650Vimp
Datasheet
184In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT 14 V 180 mA - 40 C + 85 C Reel, Cut Tape, MouseReel
Bourns Board Mount Surge Protectors Bi-directional TBU
Datasheet
787In Stock
6,000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN 250 V 400 mA - 55 C + 125 C Reel, Cut Tape, MouseReel
Bourns Board Mount Surge Protectors Bi-directional TBU
Datasheet
160In Stock
42,000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN 250 V 1 A - 55 C + 125 C Reel, Cut Tape, MouseReel
Bourns Board Mount Surge Protectors Bi-directional TBU
Datasheet
819In Stock
3,000Expected 9/29/2026
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN 500 V 100 mA - 55 C + 125 C Reel, Cut Tape, MouseReel
Bourns Board Mount Surge Protectors Dual Unidirectional TBU Device
Datasheet
144In Stock
18,000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN 650 V 600 mA - 40 C + 85 C Reel, Cut Tape, MouseReel
Bourns Board Mount Surge Protectors Dual Unidirectional TBU Device
Datasheet
1,305In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN 850 V 200 mA - 40 C + 85 C Reel, Cut Tape, MouseReel
Bourns Board Mount Surge Protectors Dual 50ohm TBU Devce Bi-directional
Datasheet
800In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN 850 V 400 mA - 55 C + 125 C Reel, Cut Tape, MouseReel
Bourns Board Mount Surge Protectors Bi-directional TBU
Datasheet
2,964Expected 1/6/2027
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN 400 V 600 mA - 55 C + 125 C Reel, Cut Tape, MouseReel
Bourns Board Mount Surge Protectors Bi-directional TBU
Datasheet
10,380On Order
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN 650 V 1 A - 55 C + 125 C Reel, Cut Tape, MouseReel
Bourns Board Mount Surge Protectors Bi-directional TBU
Datasheet
9,180Expected 9/24/2026
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN 850 V 600 mA - 55 C + 125 C Reel, Cut Tape, MouseReel
Bourns Board Mount Surge Protectors 100mA 650Vimp
Datasheet
Non-Stocked Lead-Time 16 Weeks
Min.: 12,000
Mult.: 3,000
: 3,000

SMD/SMT 14 V 100 mA - 40 C + 85 C Reel
Bourns Board Mount Surge Protectors 260mA 650Vimp
Datasheet
Non-Stocked Lead-Time 16 Weeks
Min.: 12,000
Mult.: 3,000
: 3,000

SMD/SMT 14 V 260 mA - 40 C + 85 C Reel
Bourns Board Mount Surge Protectors 180mA 850Vimp
Datasheet
Non-Stocked Lead-Time 16 Weeks
Min.: 12,000
Mult.: 3,000
: 3,000

SMD/SMT 14 V 180 mA - 40 C + 85 C Reel
Bourns Board Mount Surge Protectors 260mA 850Vimp
Datasheet
Non-Stocked Lead-Time 16 Weeks
Min.: 12,000
Mult.: 3,000
: 3,000

SMD/SMT 14 V 260 mA - 40 C + 85 C Reel
Bourns Board Mount Surge Protectors Dual 50ohm TBU Devce Bi-directional
Datasheet
Non-Stocked Lead-Time 24 Weeks
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

SMD/SMT DFN 350 V 100 mA - 55 C + 125 C Reel, Cut Tape, MouseReel
Bourns Board Mount Surge Protectors Dual 50ohm TBU Devce Bi-directional
Datasheet
Non-Stocked Lead-Time 24 Weeks
Min.: 9,000
Mult.: 3,000
: 3,000

SMD/SMT DFN 600 V 400 mA - 55 C + 125 C Reel