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 (GBP) 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 Bi-directional TBU
Datasheet
7,429In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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
15,487In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT DFN 850 V 600 mA - 55 C + 125 C Reel, Cut Tape, MouseReel
Bourns Board Mount Surge Protectors Bi-directional TBU
Datasheet
5,556In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT DFN 850 V 1 A - 55 C + 125 C Reel, Cut Tape, MouseReel
Bourns Board Mount Surge Protectors Dual Unidirectional TBU Device
Datasheet
3,448In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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
2,194In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT DFN 850 V 200 mA - 40 C + 85 C Reel, Cut Tape, MouseReel
Bourns Board Mount Surge Protectors Dual Unidirectional TBU Device
Datasheet
1,860In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT DFN 850 V 600 mA - 40 C + 85 C Reel, Cut Tape, MouseReel
Bourns Board Mount Surge Protectors Bi-directional TBU
Datasheet
800In Stock
6,000Expected 13/04/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT DFN 400 V 1 A - 55 C + 125 C Reel, Cut Tape, MouseReel
Bourns Board Mount Surge Protectors 180mA 650Vimp
Datasheet
Product Comments
704In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 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
1,364In Stock
3,000Expected 07/05/2026
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT DFN 250 V 200 mA - 55 C + 125 C Reel, Cut Tape, MouseReel
Bourns Board Mount Surge Protectors 200mA 850Vimp
Datasheet
Product Comments
24In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT 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
Reel: 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
15,000On Order
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SMD/SMT DFN 500 V 600 mA - 55 C + 125 C Reel, Cut Tape, MouseReel
Bourns Board Mount Surge Protectors 100mA 650Vimp
Datasheet
Product Comments
Non-Stocked Lead-Time 16 Weeks
Min.: 12,000
Mult.: 3,000
Reel: 3,000

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

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

SMD/SMT 14 V 180 mA - 40 C + 85 C Reel
Bourns Board Mount Surge Protectors 260mA 850Vimp
Datasheet
Product Comments
Non-Stocked Lead-Time 16 Weeks
Min.: 12,000
Mult.: 3,000
Reel: 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
Min.: 9,000
Mult.: 3,000
Reel: 3,000

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

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