TBU-DT Datasheet, PDF (1/5 Pages) –

*RoHS ^COMPLIANT
LEAD ^FREE
Features
n Superior circuit protection
n Overcurrent and overvoltage protection
n Blocks surges up to rated limits
n High-speed performance
n Small SMT package
n RoHS compliant*
n Agency listing:
Applications
n Ethernet ports
n Protection modules and dongles
n Process control equipment
n Test and measurement equipment
n General electronics
TBU-DT Series - TBU^® High-Speed Protectors
General Information
The TBU-DT Series of Bourns^®
capacitance dual unidirectional
protect against faults caused by
surges.
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The TBU-DT series is a unidirectional TBU^® device; the TBU^® protector will trip in less
than 1 ms when the current reaches the maximum value in one direction only, that is when
Pin 1 is positive in voltage with respect to Pin 2, and Pin 4 is positive with respect to Pin 3.
No current limiting exists in the opposite polarity, and the TBU^® device appears as resis-
tive in nature. The reverse current should not exceed the maximum trigger current level of
the TBU^® device. An external diode may be used to prevent reverse current in DC biased
applications.
The TBU^® protector blocks surges and provides an effective barrier behind which sensitive
electronics will not be exposed to large voltages or currents during surge events. After the
surge, the TBU^® device resets when the voltage across the TBU^® device falls to the V_reset
level. The TBU^® device will automatically reset on lines which have no DC bias or have
DC bias below Vreset (such as unpowered signal lines).
The TBU^® device is provided in a surface mount DFN package and meets industry
standard requirements such as RoHS and Pb Free solder reflow profiles.
Line Side ₁
2 ^{Load Side}
Line Side
4
Load Side
3
TBU^® Device
Agency Listing
Description
UL
File Number: E315805
Absolute Maximum Ratings (@ T_A = 25 °C Unless Otherwise Noted)
Symbol Parameter
Part Number
Value
Unit
V_imp
Peak impulse voltage withstand with duration less than 10 ms
TBU-DT065-xxx-WH
TBU-DT085-xxx-WH
650
850
V
V_rms
Continuous A.C. RMS voltage
TBU-DT065-xxx-WH
300
TBU-DT085-xxx-WH
425
V
Top
Operating temperature range
-40 to +125
°C
Tstg
Storage temperature range
-65 to +150
°C
Electrical Characteristics (@ T_A = 25 °C Unless Otherwise Noted)
Symbol
I_trigger
Parameter
Current required for the device to go from operating state to
protected state
Part Number
TBU-DTxxx-100-WH
TBU-DTxxx-200-WH
TBU-DTxxx-300-WH
TBU-DTxxx-500-WH
Min.
100
200
300
500
Typ.
150
300
450
750
R_device
Series resistance of
the TBU^® device
V_imp = 650 V I_trigger (min.) = 100 mA
V_imp = 650 V I_trigger (min.) = 200 mA
V_imp = 650 V I_trigger (min.) = 300 mA
V_imp = 650 V I_trigger (min.) = 500 mA
TBU-DT065-100-WH
TBU-DT065-200-WH
TBU-DT065-300-WH
TBU-DT065-500-WH
V_imp = 850 V I_trigger (min.) = 100 mA
V_imp = 850 V I_trigger (min.) = 200 mA
V_imp = 850 V I_trigger (min.) = 300 mA
V_imp = 850 V I_trigger (min.) = 500 mA
TBU-DT085-100-WH
TBU-DT085-200-WH
TBU-DT085-300-WH
TBU-DT085-500-WH
8.5
5.6
4.6
4.0
10.3
7.4
6.5
5.8
R_match
t_block
I_Q
V_reset
R_th(j-l)
R_th(j-l)
Package resistance matching of the TBU^® device #1 - TBU^® device #2
-0.5
Time for the device to go from normal operating state to protected state
 
Current through the triggered TBU^® device with 50 Vdc circuit voltage
0.25 0.50
Voltage below which the triggered TBU^® device will transition to normal operating state
10
14
Junction to package pads - FR4 using recommended pad layout
116
Junction to package pads - FR4 using heat sink on board (6 cm²)
 
96
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
Specifications are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specific applications.
Max.
200
400
600
1000
10.0
6.6
5.6
4.8
12.1
8.7
7.7
6.9
+0.5
1
1.00
18
Unit
mA
Ω
Ω
µs
mA
V
°C/W
°C/W