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參數(shù)資料
| 型號(hào)： | PSRDA05-4-LF-T7 |
| 廠商： | PROTEK DEVICES |
| 元件分類： | 參考電壓二極管 |
| 英文描述： | STEERING DIODE/ TVS ARRAY COMBO |
| 中文描述： | 500 W, UNIDIRECTIONAL, SILICON, TVS DIODE |
| 封裝： | ROHS AND REACH COMPLIANT, PLASTIC, SOP-8 |
| 文件頁數(shù)： | 4/5頁 |
| 文件大?。?/td> | 101K |
| 代理商： | PSRDA05-4-LF-T7 |
PSRDA3.3-4
thru
PSRDA15-4
4
05096.R8 3/07
www.protekdevices.com
APPLICATION NOTE
The PSRDAxx-4 Series are low capacitance, unidirectional TVS arrays that are designed to protect I/O or high speed data lines from the damaging
effects of ESD or EFT. This product series has a surge capability of 500 Watts P
PP
per line for an 8/20μs waveshape and offers ESD protection >
40kV.
DIFFERENTIAL-MODE CONFIGURATION (Figure 1)
Ideal for use in USB applications, the PSRDAxx-4 Series provides up
to four (4) lines of protection in a differential-mode configuration as
depicted in Figure 1.
Circuit connectivity is as follows:
Pins 1, 4, 6 and 7 are connected to the data lines.
Pins 5 and 8 are connected to ground.
Pins 2 and 3 are connected to the databus.
DIFFERENTIAL-MODE CONFIGURATION (Figure 2)
The PSRDAxx-4 Series also provides up to four (4) lines of protection
in a differential-mode configuration as depicted in Figure 2 for T1/E1
applications.
Circuit connectivity is as follows:
Pins 1, 4, 6 and 7 are connected to the data lines.
Pins 5 and 8 are connected to ground.
Pins 2 and 3 are connected to the databus.
CIRCUIT BOARD LAYOUT RECOMMENDATIONS
Circuit board layout is critical for Electromagnetic Compat-
ibility (EMC) protection. The following guidelines are
recommended:
The protection device should be placed near the input
terminals or connectors, the device will divert the
transient current immediately before it can be coupled
into the nearby traces.
The path length between the TVS device and the
protected line should be minimized.
All conductive loops including power and ground
loops should be minimized.
The transient current return path to ground should be
kept as short as possible to reduce parasitic induc-
tance.
Ground planes should be used whenever possible.
For multilayer PCBs, use ground vias.
Figure 2. Typical Differential-Mode T1/E1 Protection
4
1
2
8
7
6
5
3
PTC
PTC
PTC
PTC
PLC01-
6
PLC01-
6
GND
GND
TRING
TTIP
RTIP
RRING
T
4
1
2
8
7
6
5
3
Figure 1. Typical Differential-Mode USB Protection
USB PORT
V
BUS
GND
D+
D-
USB PORT
V
BUS
GND
D+
D-
U
V
BUS
GND
GND
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PSRDA05-4-T13 | STEERING DIODE/ TVS ARRAY COMBO |
| PSRDA05-4-T7 | STEERING DIODE/ TVS ARRAY COMBO |
| PSRDA12-4 | STEERING DIODE/ TVS ARRAY COMBO |
| PSRDA12-4-LF-T13 | STEERING DIODE/ TVS ARRAY COMBO |
| PSRDA12-4-LF-T7 | STEERING DIODE/ TVS ARRAY COMBO |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PSRDA05-4-T13 | 制造商:PROTEC 制造商全稱:Protek Devices 功能描述:STEERING DIODE/ TVS ARRAY COMBO |
| PSRDA05-4-T7 | 制造商:PROTEC 制造商全稱:Protek Devices 功能描述:STEERING DIODE/ TVS ARRAY COMBO |
| PSRDA05-6 | 制造商:ProTek Devices 功能描述:ESD Suppressor Diode Arrays 15KV 8-Pin SO Tube |
| PSRDA05-6-LF-T13 | 制造商:PROTEC 制造商全稱:Protek Devices 功能描述:STEERING DIODE/ TVS ARRAY COMBO |
| PSRDA05-6-LF-T7 | 制造商:ProTek Devices 功能描述:ESD Suppressor Diode Arrays 15KV 8-Pin SO T/R |
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