GBLC全系列:
GBLC03C-LF-T7       GBLC05C-LF-T7      GBLC08C-LF-T7     GBLC12C-LF-T7

GBLC24C-LF-T7       GBLC03CI-LF-T7     GBLC05CI-LF-T7

PSOT全系列
PSOT03C-LF-T7       PSOT05C-LF-T7      PSOT12C-LF-T7     PSOT15C-LF-T7

PSOT24C-LF-T7       PSOT36C-LF-T7

PSRDA3.3-4-LF-T7    SLVU2.8-LF-T7     PSR05-LF-T7      SLVU2.8-4-LF-T7

SMF05C-LF-T7        PLR0504F          RSB6.8S-LF-T7    RSB6.8C-LF-T7

SRV05-4-P-T7        PSM712-LF-T7      PTKPP3100SB-LF-T13

SM16LC15C-LF-T7     PSD03C-LF-T7      PSD05C-LF-T7      PSD08C-LF-T7

PSD12C-LF-T7        PSD18C-LF-T7      PSD24C-LF-T7     PSRDA05-4-LF-T7   

EM8D-100L-LF-T7     SR12-LF-T7        PD10850-LF-T7    PSOT05LC-LF-T7

EM4D-100L-LF-T73    PD10753-LF-T7

联系电话：0755-89800645/89800649

QQ:123248431

Mail: Smartek.cn@gmail.com

Http://www.smartek.cn

双USB2.0 接口及ESD 防护
随着USB2.0 接口技术的发展，近期又出现了“双端口USB 主机控制器”，打破了USB2.0 接口只应用
在传统的PC 机和外围设备之间的通信领域，“双端口USB 主机控制器”是为了诸如DVD 刻录机，屏
变LCD 电视或音频设备等设计的“通用串行总线”，它的数据传输速度是：高速（480Mbps），全速
（12Mbps）和低速（1.5Mbps）,它采用了“双端口配置”。
双USB 平行处理技术，保证浏览高清晰图片和高清晰数码流，同时也突破了USB 在嵌入式平台上复制
速度的瓶颈，通过液晶彩电的USB 接口即可方便快捷地实现PC 机速度的文件复制功能。
防护双USB2.0 接口的ESD 侵扰，使用PLR0504F，它的极间电容小于1.9pf ，承受ESD 的功率是200W，
关断电压是5V ，PLR0504F 的结构是为保护“双USB2.0 接口”设计的如下图所示：

ProTek Devices, based in Tempe, Arizona USA, is a manufacturer of Transient Voltage Suppression (TVS) products designed specifically for the protection of electronic systems from the destructive effects of Lightning, Electrostatic Discharge (ESD), Nuclear Electromagnetic Pulse (NEMP) and Inductive Switching.    With 25 years of engineering and manufacturing experience, ProTek designs TVS devices that provide application specific protection solutions for any type of electronic system such as, telecommunications, industrial, military and commercial applications.

In 1992, ProTek Devices acquired the Tempe, Arizona operation of General Semiconductor, Inc. (GSI) from the Square D Company.    By acquiring GSI's line of high quality commercial and military TVS assemblies, and developing a wide range of new high performance transient voltage suppression products, ProTek has become a recognized industry leader.    Today, the company's broad and diversified product line ranges from board-level, surface mount arrays; to after-market megawatt systems.

ProTek Devices' major customers are in the industrial, computer, telecommunications and aerospace markets, and its products are sold worldwide both to OEM and Electronic Distributors.

At ProTek Devices, transient voltage protection is our only business.    We utilize the latest technologies in the design and fabrication of our products, bringing together more than two decades of engineering and manufacturing experience to fields of transient and surge protection.

ProTek' acquired the Silica Tek fab in July of 1999.    The fab has the capability of processing 4", 6", 8" and 12" silicon wafers and will be used primarily for new products currently under development at ProTek.    The facility also has complete "thin" film" capability.

The acquisition of the Silica Tek wafer fab aided in the fabrication of new, advanced devices which protect telecommunication systems, network systems, computers and other voltage sensitive electronics from the effects of lightning and Electrostatic Discharge (ESD).

ProTek's highly qualified and accredited staff includes some of the industry's best engineering talent.    Many of our engineers are active members of IEEE, NEMA, JC-13, JC-22 and IEC and other industry associations, and have contributed significantly to the formation of current standards, specifications and electrical codes for surge suppression methodology.

ProTek has pioneered many innovative TVS products which set benchmarks for quality, reliability and performance.    This is due to our in-depth understanding of the transient environment, and the capability to manufacture World Class Quality devices.    In addition, ProTek's ongoing development program is yielding new products designs which meet and exceed today's most demanding requirements for transient voltage protection.