TBU-CX050-VTC-WH Bourns Inc., TBU-CX050-VTC-WH Datasheet - Page 2

• Manufacturer Part Number: TBU-CX050-VTC-WH
• Description: SURGE SUPP TBU 500VIMP SMD
• Manufacturer: Bourns Inc.
• Series: TBU-CXr

Specifications of TBU-CX050-VTC-WH

• Package / Case: SMD 4.00mm x 8.25mm
• Voltage - Working: 250V
• Voltage - Clamping: 500V
• Technology: Mixed Technology
• Number Of Circuits: 2
• Applications: General Purpose
• Voltage Rating: 500 V
• Current Rating: 750 mA
• Termination Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power (watts): -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: TBU-CX050-VTC-WHTR

The TBU
variety of applications. The maximum voltage rating of the TBU
device should never be exceeded. Where necessary, an OVP
should be employed to limit the maximum voltage. A cost-
effective protection solution combines Bourns
devices with a pair of Bourns
applications, a Bourns
See “Trigger Current vs External Resistor Value” graph for
selecting the optimum trigger current value using a 0 ohm –
50 ohm resistor value.
Note: Line Resistance =
Reference Application
Performance Graphs
Typical V-I Characteristics (TBU-CX050-VTC-WH with Rext = 1 Ω)
TBU-CX Series - TBU
TBU
Equip.
®
devices are general use protectors used in a wide
®
Device Resistance + R
CURRENT
(100 mA/div)
®
TBU
Device
TBU
Device
GDT may be substituted for the MOV.
®
®
®
MOVs. For bandwidth sensitive
R
R
external
®
I
External
Resistor
External
Resistor
TRIP
High-Speed Protectors
Resistance
VOLTAGE
(5 V/div)
V
RESET
®
TBU
OVP
OVP
®
Line
protection
Line
The TBU
technology, placed in the system circuit will monitor the
current with the MOSFET detection circuit triggering to provide
an effective barrier behind which sensitive electronics are not
exposed to large voltages or currents during surge events. The
TBU
current exceeds the TBU
When operated, the TBU
than 1 mA typically. When operated, the TBU
block all voltages including the surge up to rated limits.
After the surge, the TBU
across the TBU
device will automatically reset on lines which have no DC bias
or have DC bias below V
If the line has a normal DC bias above V
across the TBU
surge. In such cases, special care needs to be taken to ensure
that the TBU
one method used to accomplish this. Bourns application
engineers can provide further assistance.
Typical Trigger Current vs. Temperature
Basic TBU Operation
®
Customers should verify actual device performance in their specifi c applications.
device operates in approximately 1 µs - once line
®
device, constructed using MOSFET semiconductor
®
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
device will reset, with software monitoring as
-75 -50
®
®
device falls to the V
device may not fall below V
Junction Temperature (°C)
-25
®
reset
®
®
Specifi cations are subject to change without notice.
device resets when the voltage
device restricts line current to less
device’s trigger current Itrigger.
0
(such as unpowered signal lines).
25
50
reset
reset
75
level. The TBU
, the voltage
100 125
reset
®
device will
after the
®