TBU-DT065-500-WH Datasheet, PDF (1/5 Pages) Bourns Electronic Solutions – 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 recognition:
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 trip 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 sensi-
tive 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 Approval
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 +85
°C
Tstg
Storage temperature range
-65 to +150
°C
Electrical Characteristics (@ T_A = 25 °C Unless Otherwise Noted)
Symbol
I_trigger
R_device
R_match
t_block
I_Q
V_reset
R_th(j-l)
R_th(j-l)
Parameter
Part Number
TBU-DTxxx-100-WH
Current required for the device to go from operating state to TBU-DTxxx-200-WH
protected state
TBU-DTxxx-300-WH
TBU-DTxxx-500-WH
Series resistance of
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
the TBU^® device
V_imp = 850 V I_trigger (min.) = 100 mA TBU-DT085-100-WH
V_imp = 850 V I_trigger (min.) = 200 mA TBU-DT085-200-WH
V_imp = 850 V I_trigger (min.) = 300 mA TBU-DT085-300-WH
V_imp = 850 V I_trigger (min.) = 500 mA TBU-DT085-500-WH
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.
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
12
Typ.
150
300
450
750
8.5
5.6
4.6
4.0
10.3
7.4
6.5
5.8
0.50
16
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
20
Unit
mA
Ω
Ω
µs
mA
V
°C/W
°C/W