TBU-LAB1 Bourns Inc., TBU-LAB1 Datasheet - Page 2

• Manufacturer Part Number: TBU-LAB1
• Description: SLIC PROTECTION KIT
• Manufacturer: Bourns Inc.
• Series: TBU™r

Specifications of TBU-LAB1

• Kit Type: SLIC Protection
• Kit Contents: (10) MOV-10D431K-ND - 10MM RADIAL DISC MOV(10) MOV-10D391K-ND - 10MM RADIAL DISC MOV(10) MOV-10D201K-ND - 10MM RADIAL DISC MOV(10) MOV-07D201K-ND - 7MM RADIAL DISC MOV(5) TBU-PL085-200-WHCT-ND - SURGE SUPP TBU DL 50OHM 850VIMP(5) TBU-PL085-100-WHCT-ND - SURGE SUPP TBU DL 50OHM 850VIMP(5) TBU-PL075-200-WHCT-ND - SURGE SUPP TBU DL 50OHM 750VIMP(5) TBU-PL075-100-WHCT-ND - SURGE SUPP TBU DL 50OHM 750VIMP(5) TBU-PL060-200-WHCT-ND - SURGE SUPP TBU DL 50OHM 600VIMP(5) TBU-PL060-100-WHCT-ND - SURGE SUPP TBU DL 50OHM 600VIMP(5) TBU-PL050-200-WHCT-ND - SURGE SUPP TBU DL 50OHM 500VIMP(5) TBU-PL050-100-WHCT-ND - SURGE SUPP TBU DL 50OHM 500VIMP(10) MOV-07D391K-ND - VARISTOR 390V 7MM RADIAL(5) TBU-PK085-100-WHCT-ND - SURGE SUPP TBU DL 100MA 850VIMP(5) TBU-PK060-100-WHCT-ND - SURGE SUPP TBU DL 100MA 600VIMP(5) TBU-PK050-100-WHCT-ND - SURGE SUPP TBU DL 100MA 500VIMP
• Lead Free Status / Rohs Status: Request inventory verification / RoHS Compliant

The TBU-PL Series are high-speed protectors used in voice/
VoIP SLIC applications.The maximum voltage rating of the TBU
device should never be exceeded. Where necessary, an OVP
device should be employed to limit the maximum voltage. A
cost-effective protection solution combines Bourns
protection devices with a pair of Bourns
sensitive applications, a Bourns
the MOV.
Functional Block Diagram
Reference Application
GND
-VBAT
TBU-PL Series - TBU
V dd
V ss
Line 1
SLIC
Line 2
SLIC
®
Device
TBU
GDT may be substituted for
®
Line 1 SLIC
Line 2 SLIC
®
®
High Speed Protectors
V ss
MOVs. For bandwidth
MOV
MOV
®
TBU
Line 2
Line 1
®
V dd
V dd
V ss
V ss
CURRENT
CURRENT
SENSE
SENSE
®
VOLTAGE
COMPARATOR
VOLTAGE
COMPARATOR
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
operated, the TBU
1 mA typically. When operated, the TBU
voltages including the surge up to rated limits.
When the voltage on the SLIC output is driven below
(V
blocking state, regardless of output current in the device.
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.
Basic TBU Operation
bat
+
+
VOLTAGE
®
SWITCH
Customers should verify actual device performance in their specifi c applications.
VOLTAGE
SWITCH
– V
HIGH
HIGH
device operates in approximately 1 µs - once line
to
®
) the TBU-PL series device switches to the
device, constructed using MOSFET semiconductor
®
device will reset, with software monitoring as
®
®
device falls to the V
device may not fall below V
®
Line 2
V dd
Line 1
device restricts line current to less than
®
reset
®
Specifi cations are subject to change without notice.
device resets when the voltage
device’s trigger current I
(such as unpowered signal lines).
reset
®
reset
level. The TBU
device will block all
, the voltage
reset
after the
trigger
®
. When