TBU-DT065-500-WH_12 Datasheet, PDF (1/5 Pages) Bourns Electronic Solutions – TBU-DT Series - TBU High-Speed Protectors

*RoHS ^COMPLIANT
00T78455
Features
■ Superior circuit protection
■ Overcurrent and overvoltage protection
■ Blocks surges up to rated limits
■ High-speed performance
■ Small SMT package
■ RoHS compliant*
■ Agency listing:
Applications
■ Ethernet ports
■ Protection modules and dongles
■ Process control equipment
■ Test and measurement equipment
■ General electronics
TBU-DT Series - TBU^® High-Speed Protectors
General Information
The TBU-DT Series of Bourns^® TBU^® (Transient Blocking Unit) products are very low
capacitance dual unidirectional high-speed surge protection components designed to
protect against faults caused by short circuits, AC power cross, induction and lightning
surges.
The TBU-DT series is a unidirectional TBU^® device; the TBU^® protector will trip in less
than 1 μs 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
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
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
Time for the device to go from normal operating state to protected state
Current through the triggered TBU^® device with 50 Vdc circuit voltage
Voltage below which the triggered TBU^® device will transition to normal operating state
Junction to package pads - FR4 using recommended pad layout
Junction to package pads - FR4 using heat sink on board (6 cm²)
*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.
Customers should verify actual device performance in their specific applications.
Min.
100
200
300
500
-0.5
0.25
10
Typ.
150
300
450
750
8.5
5.6
4.6
4.0
10.3
7.4
6.5
5.8
0.50
14
116
96
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