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参数资料
| 型号： | PN-DESIGNKIT-16 |
| 厂商： | Bourns Inc. |
| 文件页数： | 3/6页 |
| 文件大小： | 0K |
| 描述： | KIT LVDS PORT SURGE PROTECTION |
| 标准包装： | 1 |
| 系列： | PortNote™ |
| 套件类型： | 电涌抑制 |
| 套件包括： | 30 件 - 3 种值 |
| 包装： | 带装箱指南的塑料箱 |
| 工具箱内容： | (10) CDSOT23-S2004CT-ND - DIODE ARRAY 240V 225MA SOT23 (10) 2031-42T-SM-RPLFCT-ND - GAS TUBE 360V 1KA 2POLE SMD (10) TBU-CA085-200-WHCT-ND - SURGE SUPP TBU 200MA 850VIMP SMD |
TBU-CA Series - TBU ? High-Speed Protectors
The TBU devices are general use protectors used in a wide
Reference Application
?
variety of applications. The maximum voltage rating of the TBU ?
device should never be exceeded. Where necessary, an OVP
should be employed to limit the maximum voltage. A cost-
effective protection solution combines Bourns ? TBU ? protection
devices with a pair of Bourns ? MOVs. For bandwidth sensitive
applications, a Bourns ? GDT may be substituted for the MOV.
Basic TBU Operation
The TBU ? device, constructed using MOSFET semiconductor
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 ? device operates in approximately 1 μs - once line
current exceeds the TBU ? device’s trigger current Itrigger.
When operated, the TBU ? device restricts line current to less
than 1 mA typically. When operated, the TBU ? device will
block all voltages including the surge up to rated limits.
Equip.
Line Out
/ Line In
TBU ?
Device
TBU ?
Device
Line Out
/ Line In
Line In /
Line Out
Line In /
Line Out
OVP
OVP
Line
Line
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 V reset (such as unpowered signal lines).
If the line has a normal DC bias above V reset , the voltage
across the TBU ? device may not fall below V reset after the
surge. In such cases, special care needs to be taken to ensure
that the TBU ? device will reset, with software monitoring as one
method used to accomplish this. Bourns application
engineers can provide further assistance.
Performance Graphs
Typical V-I Characteristics (TBU-CA050-300-WH)
Typical Trigger Current vs. Temperature
1.8
I TRIP
1.6
CURRENT
(100 mA/div)
V RESET
VOLTAGE
(5 V/div)
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
-75 -50 -25
0
25
50
75 100 125 150
Junction Temperature (°C)
Power Derating Curve
Typical Resistance vs. Temperature
3.0
No Additional PCB Cu
2.2
2.5
2.0
1.5
1.0
0.5
0.5 sq. in. Additional PCB Cu
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.0
20
40
60
80
100
120
140
0.2
Junction Temperature (°C)
0.0
-75 -50 -25
0
25
50
75 100 125 150
Speci?cations are subject to change without notice.
Customers should verify actual device performance in their speci?c applications.
Junction Temperature (°C)
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