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参数资料
| 型号： | SRDA12-4.TBT |
| 元件分类： | TVS二极管 - 瞬态电压抑制 |
| 英文描述： | 500 W, UNIDIRECTIONAL, SILICON, TVS DIODE, MS-012AA |
| 封装： | ROHS COMPLIANT, SOIC-8 |
| 文件页数： | 9/11页 |
| 文件大小： | 226K |
| 代理商： | SRDA12-4.TBT |
7
2007 Semtech Corp.
www.semtech.com
PROTECTION PRODUCTS
SRDA05-4 and SRDA12-4
Applications Information (continued)
the power supply connection. During an ESD event,
the current will be directed through the integrated TVS
diode to ground. The total clamping voltage seen by
the protected IC due to this path will be:
V
C
= V
F(RailClamp)
+ V
TVS
This is given in the data sheet as the rated clamping
voltage of the device. For an SRDA05-4 the typical
clamping voltage is <16V at I
PP
=30A. The diodes
internal to the RailClamp are low capacitance, fast
switching devices that are rated to handle high tran-
sient currents and maintain excellent forward voltage
characteristics.
Using the RailClamp does not negate the need for good
board layout. All other inductive paths must be consid-
ered. The connection between the positive supply and
the SRDA and from the ground plane to the SRDA
must be kept as short as possible. The path between
the SRDA and the protected line must also be mini-
mized. The protected lines should be routed directly to
the SRDA. Placement of the SRDA on the PC board is
also critical for effective ESD protection. The device
should be placed as close as possible to the input
connector. The reason for this is twofold. First,
inductance resists change in current flow. If a signifi-
cant inductance exists between the connector and the
TVS, the ESD current will be directed elsewhere (lower
resistance path) in the system. Second, the effects of
radiated emissions and transient coupling can cause
upset to other areas of the board even if there is no
direct path to the connector. By placing the TVS close
to the connector it will divert the ESD current immedi-
ately and absorb the ESD energy before it can be
coupled into nearby traces.
相关PDF资料 |
PDF描述 |
|---|---|
| SRDA05-4.TBT | 500 W, UNIDIRECTIONAL, SILICON, TVS DIODE, MS-012AA |
| SRDA12-4.T | 500 W, UNIDIRECTIONAL, SILICON, TVS DIODE, MS-012AA |
| SRDA05-4 | 500 W, UNIDIRECTIONAL, SILICON, TVS DIODE, MS-012AA |
| SRDA3.3-4 | 500 W, UNIDIRECTIONAL, SILICON, TVS DIODE |
| SRDA3.3-4-LF | 500 W, UNIDIRECTIONAL, SILICON, TVS DIODE |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SRDA12-4TE | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:RailClamp Low Capacitance TVS Diode Array |
| SRDA12-6 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Direct ProTek Replacement:PSRDA12-6 |
| SRDA15-4 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Direct ProTek Replacement:PSRDA15-4 |
| SRDA15-6 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Direct ProTek Replacement:PSRDA15-6 |
| SRDA-1A1-SL-12VDC | 制造商:IMO 功能描述:IMO Subminiature Power Relay SPNO, 5A, 12VDC, 450mW, AgNi Sealed, RoHS, 70mOhm@1 |
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