TBU-DT065-300-WH [BOURNS]
TBU High Speed Protectors; TBU高速保护器
| 型号： | TBU-DT065-300-WH |
| 厂家： | 
BOURNS ELECTRONIC SOLUTIONS |
| 描述： | TBU High Speed Protectors |
| 文件： | 总5页 (文件大小：586K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Features
Applications
■ Superior circuit protection
■ Overcurrent and overvoltage protection
■ Blocks surges up to rated limits
■ High speed performance
■ Small SMT package
■ Ethernet ports
■ Protection modules and dongles
■ Process control equipment
■ Test and measurement equipment
■ General electronics
T855
0074
■ RoHS compliant*
■ Agency recognition:
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.
Line Side
Line Side
Load Side
Load Side
1
2
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.
4
3
TBU® Device
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
level. The TBU® device will automatically reset on lines which have no DC bias
Agency Approval
reset
or have DC bias below Vreset (such as unpowered signal lines).
Description
File Number: E315805
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.
UL
Absolute Maximum Ratings (@ T = 25 °C Unless Otherwise Noted)
A
Symbol
Parameter
Part Number
Value
650
850
300
425
Unit
TBU-DT065-xxx-WH
TBU-DT085-xxx-WH
TBU-DT065-xxx-WH
TBU-DT085-xxx-WH
V
Peak impulse voltage withstand with duration less than 10 ms
V
V
imp
rms
V
Continuous A.C. RMS voltage
T
T
Operating temperature range
Storage temperature range
-40 to +85
-65 to +150
°C
°C
op
stg
Electrical Characteristics (@ T = 25 °C Unless Otherwise Noted)
A
Symbol
Parameter
Part Number
Min.
Typ.
150
300
450
750
8.5
5.6
4.6
4.0
Max.
200
400
600
1000
10.0
6.6
Unit
TBU-DTxxx-100-WH
TBU-DTxxx-200-WH
TBU-DTxxx-300-WH
TBU-DTxxx-500-WH
100
200
300
500
Current required for the device to go from operating state to
protected state
I
mA
trigger
V
V
V
V
= 650 V I
= 650 V I
= 650 V I
= 650 V I
(min.) = 100 mA TBU-DT065-100-WH
(min.) = 200 mA TBU-DT065-200-WH
(min.) = 300 mA TBU-DT065-300-WH
(min.) = 500 mA TBU-DT065-500-WH
imp
imp
imp
imp
trigger
trigger
trigger
trigger
5.6
4.8
Series resistance of
the TBU® device
Ω
R
R
device
V
V
V
V
= 850 V I
= 850 V I
= 850 V I
= 850 V I
(min.) = 100 mA TBU-DT085-100-WH
(min.) = 200 mA TBU-DT085-200-WH
(min.) = 300 mA TBU-DT085-300-WH
(min.) = 500 mA TBU-DT085-500-WH
10.3
7.4
6.5
5.8
12.1
8.7
7.7
6.9
+0.5
1
imp
imp
imp
imp
trigger
trigger
trigger
trigger
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
-0.5
Ω
µs
mA
V
°C/W
°C/W
match
block
t
I
0.25
12
0.50
16
116
96
1.00
20
Q
V
reset
R
R
th(j-l)
th(j-l)
2
Junction to package pads - FR4 using heat sink on board (6 cm )
*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.
TBU-DT Series - TBU® High Speed Protectors
Reference Application
Basic TBU Operation
The TBU® device can be used to protect against excessive
voltage surges in transformer coupled equipment, as shown in
the figure below. The TBU® protector prevents any surges from
causing damage. An overvoltage protection device, such as an
MOV or GDT, may be used to provide additional overvoltage
protection if the surge voltage is likely to be above the maximum
rating of the TBU® device.
The TBU® device is a silicon-based, solid-state, resettable
device which is placed in series with a signal path. The TBU®
device operates in approximately 1 µs - once line current
exceeds the TBU® device’s trigger current I
. When oper-
trigger
ated, the TBU® device restricts line current to less than 1 mA
typically. When operated, the TBU® device will block all system
voltages and any other voltages including the surge up to
rated limits.
After the surge, the TBU® device resets when the voltage
across the TBU® device falls to the V
level. The TBU® de-
1
2
reset
vice will automatically reset on lines which have no DC bias or
OVP
OVP
Line
Side
have DC bias below V (such as unpowered signal lines).
reset
Load
If the line has a normal DC bias above V
, the voltage
reset
4
3
across the TBU® device may not fall below V
after the
reset
surge. In such cases, special care needs to be taken to ensure
that the TBU® device will reset, otherwise an automatic or
manual power down will be required. Bourns application
engineers can provide further assistance.
TBU® Device
Performance Graphs
V-I Characteristic - TBU-DT085-300-WH (Pin 2-1 & Pin 3-4)
Typical Trigger Current vs. Temperature
1.8
1.6
1.4
1.2
I
TRIP
CURRENT
(100 mA/div.)
V
RESET
1.0
0.8
0.6
0.4
VOLTAGE
(5 v/div.)
0.2
0.0
-75 -50 -25
0
25 50 75 100 125 150
Junction Temperature (°C)
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
TBU-DT Series - TBU® High Speed Protectors
Performance Graphs (Continued)
Power Derating Curve
Typical Resistance vs. Temperature
3.0
2.2
2.0
1.8
No additional PCB Cu (2 TBU® Protectors)
0.5 sq. in. additional PCB CU (2 TBU® Protectors)
No additional PCB Cu (1 TBU® Protector)
2.5
2.0
1.5
1.0
0.5
0.0
0.5 sq. in. additional PCB CU (1 TBU® Protector)
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
20
40
60
80
100
120
140
-75 -50 -25
0
25 50 75 100 125 150
Junction Temperature (°C)
Junction Temperature (°C)
Reflow Profile
Profile Feature
Pb-Free Assembly
Average Ramp-Up Rate (Tsmax to Tp)
3 °C/sec. max.
Preheat
- Temperature Min. (Tsmin)
- Temperature Max. (Tsmax)
- Time (tsmin to tsmax)
150 °C
200 °C
60-180 sec.
Time maintained above:
- Temperature (TL)
- Time (tL)
217 °C
60-150 sec.
Peak/Classification Temperature (Tp)
Time within 5 °C of Actual Peak Temp. (tp)
Ramp-Down Rate
260 °C
20-40 sec.
6 °C/sec. max.
8 min. max.
Time 25 °C to Peak Temperature
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
®
TBU-DT Series - TBU High Speed Protectors
Product Dimensions
0.75
(.0304
3.05
(.1204
0.85 0.05
(.033 .0024
0.60
(.02ꢀ4
5.00 0.10
(.197 .00ꢀ4
0.70
(.0284
5.00 0.10
(.197 .00ꢀ4
SYMMETRY
0.35
(.01ꢀ4
1.85
(.0734
0.25
(.0104
C
PIN 1
PIN 1 & BACKSIDE CHAMFER
MM
(INCHES4
DIMENSIONS:
0.00 - 0.05
(.000 - .0024
Thermal Resistance vs. Additional PCB Cu Area
Recommended Pad Layout
TBU® protectors have matte-tin termination finish. The
120
Typical RTH (Power in 1 TBU® Device4
suggested layout should use Non-Solder Mask Define (NSMD).
The recommended stencil thickness is 0.10-0.12 mm (.004-
.005 in.) with a stencil opening size 0.025 mm (.0010 in.) less
than the device pad size. As when heat sinking any power
device, it is recommended that wherever possible, extra PCB
copper area is allowed. For minimum parasitic capacitance, do
not allow any signal, ground or power signals beneath any of
the pads of the device.
Typical RTH (Equal Power in Both TBU® Devices4
100
80
60
ꢀ0
Pad Designation
20
0
Pad #
Pin Out
3
2
4
1
1
2
3
4
Line Side 1
Line Load 1
Line Load 2
Line Side 2
0
0.2 0.ꢀ
0.6 0.8 1.0
1.2 1.ꢀ
1.6
1.8 2.0
Added Cu Area (Sq. In.4
Dark grey areas show added PCB copper area for better
thermal resistance.
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications
®
TBU-DT Series - TBU High Speed Protectors
How to Order
Typical Part Marking
MANUFACTURER’S
TRADEMARK
PRODUCT CODE
- 1ST DIGIT INDICATES PRODUCT FAMILY:
T = TBU-DT SERIES
TBU - DT 065 - 500 - WH
TBU® Product
- 2ND & 3RD DIGITS INDICATE IMPULSE VOLTAGE:
25 = 250 V
40 = 400 V
50 = 500 V
Series
DT = Dual Uni-Series
- 4TH DIGIT INDICATES TRIGGER CURRENT:
1 = 100 mA
2 = 200 mA
3 = 300 mA
5 = 500 mA
Impulse Voltage Rating
065 = 650 V
085 = 850 V
PIN 1
Trigger Current
MANUFACTURING
DATE CODE
- 1ST DIGIT INDICATES THE YEAR’S 6-MONTH PERIOD.
100 = 100 mA
200 = 200 mA
300 = 300 mA
500 = 500 mA
- 2ND DIGIT INDICATES THE WEEK NUMBER IN THE 6-MONTH PERIOD.
- 3RD & 4TH DIGITS INDICATE SPECIFIC LOT FOR THE WEEK.
Hold to Trip Ratio Suffix
W = Hold to Trip Ratio
6-MONTH PERIOD CODES:
Package Suffix
A = JAN-JUN 2009
B = JUL-DEC 2009
C = JAN-JUN 2010
D = JUL-DEC 2010
E = JAN-JUN 2011
F = JUL-DEC 2011
H = DFN Package
Packaging Specifications
P
0
E
D
P
2
t
B
TOP
COVER
TAPE
A
N
F
W
C
D
B
0
K
0
CENTER
LINES OF
CAVITY
A
0
D
1
EMBOSSMENT
P
G (MEASURED AT HUB)
MM
DIMENSIONS:
USER DIRECTION OF FEED
QUANTITY: 3000 PIECES PER REEL
(INCHES)
A
B
C
D
G
N
Min.
326
(12.835)
Max.
330
(13.002)
Min.
1.5
(.059)
Max.
2.5
(.098)
Min.
12.8
(.504)
Max.
13.5
(.531)
Min.
20.2
(.795)
Max.
-
Ref.
16.5
(.650)
Ref.
102
(4.016)
A
B
D
D
E
F
0
0
0
1
Min.
Max.
5.6
(.220)
Min.
5.4
(.212)
Max.
5.6
(.220)
Min.
1.5
(.059)
Max.
1.6
(.063)
Min.
1.5
(.059)
Max.
Min.
1.65
(.065)
Max.
1.85
(.073)
Min.
7.4
(.291)
max.
5.4
(.212)
7.6
(.299)
-
K
P
P
0
P
t
W
2
Min.
Max.
Min.
Max.
Min.
Max.
Min.
Max.
Min.
Max.
Min.
Max.
1.1
(.043)
1.3
(.051)
7.9
(.311)
8.1
(.319)
3.9
(.159)
4.1
(.161)
1.9
(.075)
2.1
(.083)
0.25
(.010)
0.35
(.014)
15.7
(.618)
16.3
(.642)
Asia-Pacific: Tel: +886-2 2562-4117 • Fax: +886-2 2562-4116
Europe: Tel: +41-41 768 5555 • Fax: +41-41 768 5510
The Americas: Tel: +1-951 781-5500 • Fax: +1-951 781-5700
www.bourns.com
12/10
“TBU” is a registered trademark of Bourns, Inc. in the U.S., Taiwan and European Community.
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications
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