Diodes Incorporated is a leading global manufacturer and supplier of high-quality application specific standard products within the broad discrete, logic, and analog semiconductor markets. Diodes serves the consumer electronics, computing, communications, industrial, and automotive markets. MMBT3904T-7-F Diodes Inc TRANSISTOR NPN 200MA 40V SOT523

 

Diodes' products include diodes, rectifiers, transistors, MOSFETs, protection devices, functional specific arrays, single gate logic, amplifiers and comparators, Hall-effect and temperature sensors; power management devices, including LED drivers, DC-DC switching and linear voltage regulators, and voltage references along with special function devices, such as USB power switches, load switches, voltage supervisors, and motor controllers. MMBT3904T-7-F Diodes Inc TRANSISTOR NPN 200MA 40V SOT523

 

MMBT3904T-7-F Diodes Inc TRANSISTOR NPN 200MA 40V SOT523

corporate headquarters, logistics center, and Americas' sales office are located in Dallas, Texas.

design, marketing, and engineering centers are located in Dallas; San Jose, California; Taipei, Taiwan; Manchester, England; and Neuhaus, Germany. wafer fabrication facilities are located in Kansas City, MMBT3904T-7-F Diodes Inc TRANSISTOR NPN 200MA 40V SOT523 Missouri and Manchester. two manufacturing facilities are located in Shanghai, China; another in Neuhaus; and a joint venture facility in Chengdu, China. The Company's Manufacturing facilities have achieved the Quality Awards of QS-9000, ISO-9001:2000, TS16949:2002 and ISO 14001 certifications These Quality Awards reflect the superior quality-control techniques established at Diodes Incorporated and further enhance our credibility as a vendor-of-choice to OEMs increasingly concerned with quality and consistency. engineering, sales, warehouse, and logistics offices are also located in Taipei; Hong Kong; Manchester; and Munich, Germany. sales and support offices are located throughout the world. MMBT3904T-7-F Diodes Inc TRANSISTOR NPN 200MA 40V SOT523 product focus is on high-growth end-user equipment markets such as TV/Satellite set-top boxes, portable DVD players, datacom devices, ADSL modems, power supplies, medical devices, PCs and notebooks, flat panel displays, digital cameras, mobile handsets, DC-to-DC conversion, Wireless 802.11 LAN access points, brushless DC motor fans and automotive applications. MMBT3904T-7-F Diodes Inc TRANSISTOR NPN 200MA 40V SOT523

 

A focus on cost reduction, product innovation and customer service has resulted in Diodes Incorporated’s MOSFET portfolio increasing market share and outperforming the market.Diodes means MOSFET business. MMBT3904T-7-F Diodes Inc TRANSISTOR NPN 200MA 40V SOT523 Embracing both industry standard and differentiated products such as the industries smallest self-protected MOSFET– the ZXMS6004FFTA, the Diodes MOSFET portfolio encompasses N channel, P channel, MMBT3904T-7-F Diodes Inc TRANSISTOR NPN 200MA 40V SOT523 and complementary devices with breakdown voltages up to 450V. These are packaged in single, dual, complementary, and H-bridge configurations in a wide range of package options, from the tiniest DFN1006 package, through to large surface mount packages such as TO252-3L. The breadth of the Diodes Incorporated MOSFET portfolio, now incorporating the Zetex brand, enables designers to select a device optimised for their end application and thus enable next generation consumer,  computer and communication product designs.  MMBT3904T-7-F Diodes Inc TRANSISTOR NPN 200MA 40V SOT523

 

The Diodes portfolio is ideally suited tomeeting the circuit requirements of:

• DC-DC conversion

• Load switching

• Motor control

• Backlighting

• Battery protection

• Battery chargers

• Audio circuits

• Automotive applications

MMBT3904T-7-F Diodes Inc TRANSISTOR NPN 200MA 40V SOT523

The majority of products in the Diodes MOSFET portfolio are designed to meet the stringent requirements of AECQ101 of the Automotive Electronic Council.  Furthermore, all packaging will feature environmentally ‘green‘ mould compound by Q1 2010. Diodes Incorporated’s MOSFET product development strategy is focused on high growth market segments such as LED Lighting; Notebook PC’s, Netbooks and voice over internet applications. A router is a device that receives data from a telephone line and decides which route the data should be sent. Routers are used extensively in computer networks. They are increasingly being used in devices installed on subscriber’s premises to reduce the cost of calls.  When used in this application the router performs the following functions: MMBT3904T-7-F Diodes Inc TRANSISTOR NPN 200MA 40V SOT523

1)Stops the dialed signals from reaching the telephone line.

2)Analyzes the dialed number and identifies the cheapest provider using stored data. MMBT3904T-7-F Diodes Inc TRANSISTOR NPN 200MA 40V SOT523

3)Regenerates and transmits the dialing signal with appropriate prefix denoting the best route.

This note shows the use of Zetex high voltage MOSFETs in this application. MMBT3904T-7-F Diodes Inc TRANSISTOR NPN 200MA 40V SOT523 The diagram below shows the ZVN4525 in a call router circuit. With different drive circuits the complementary P-channel device ZVP4525 may be used. The circuit is symmetrical and will workwhen the polarity of the line connections is reversed. MMBT3904T-7-F Diodes Inc TRANSISTOR NPN 200MA 40V SOT523 MOSFETs are used as the pass element to enable a signal path to be maintained continuously from the line to the telephone circuit through the body diode. Signals from the telephone to the line are controlled by the call router. The Gyrator is a circuit that maintains a DC path between the telephone and the line while blocking any AC signals. The bridge BR ensures the correct polarity of the MOSFET gate signals. Diodes The zener diode pairs Z1 and Z2 provide gate protection for the MOSFETs.The FMMT458 devices are part of a comprehensive range of Zetex high voltage transistors that can be used to interface controllers to telephone lines. The ZVN4525 and ZVP4525 250V MOSFET MMBT3904T-7-F Diodes Inc TRANSISTOR NPN 200MA 40V SOT523 devices indicated in this design note are available in a variety of package outlines and full part numbers and short form details are provided in the table