Cellular Base Stations and PCS Base Stations On GlobalSpec

Cellular base stations and PCS base stations are land or fixed station in a mobile or wireless communications or cellular system consisting of one or more transmitters or receivers or a combination of transmitters and receivers, including the accessory equipment. Cellular base stations and PCS base stations send and receive transmissions from the mobile or hand held units with a cell and forward these signals on to the local phone network. Tower or building mounted panel or sector antennas are commonly applied for cell sites. Concealment is often required so the antenna blends in with the surrounding community. In this context, PCS stands for personal communications service

Products & Services

Antennas

Antennas are structures or devices used to collect or radiate electromagnetic waves.

Search by Specification | Learn more about Antennas | Antennas Insights

Gate Turn-off (GTO) Thyristors

Gate turn-off thyristors (GTOs) are four-layer PNPN devices that act as switches, rectifiers, and voltage regulators. Like other thyristors, GTOs can be turned on by the application of a positive gate signal (g > 0); however, unlike other more conventional devices that can be turned off only at a zero crossing of current, GTOs can be turned off at any time by the application of a gate signal equal to zero.

Search by Specification | Learn more about Gate Turn-off (GTO) Thyristors

Quadracs

Quadracs are a special type of thyristor which combines a diac and a triac in a single package. The diac is the triggering device for the triac.

Search by Specification | Learn more about Quadracs

Silicon Controlled Rectifiers (SCR)

Silicon controlled rectifiers (SCR) are four-layer (PNPN) thyristors with three terminals: an input control terminal (gate), an output terminal (anode), and a terminal common to both the input and output (cathode). SCRs are used mainly with high voltages and currents, often to control alternating current (AC) where the change of sign causes the device to switch off automatically.

Search by Specification | Learn more about Silicon Controlled Rectifiers (SCR)

Diacs

Diacs are bi-directional diodes that switch AC voltages and trigger silicon controlled rectifiers (SCRs) and triacs. Except for a small leakage current, diacs do not conduct until the breakover voltage is reached.

Search by Specification | Learn more about Diacs

Product Announcements

2CL2 Medium Power High Voltage Silicon Diodes

HV Components/CKE

These diodes feature repetitive peak reverse voltage ranging from 8,000 to 20,000 Volts and low reverse leakage current with reverse recovery time as low as 100 nanoseconds. (read more)

High Power Multi Purpose IGBT Transistor Switches

5S Components

The ABB HiPak from 5S Components is the ideal IGBT for general industrial applications that require a high power pulse of short duration. Equipped with ultra low-loss resistance capabilities and... (read more)

SCRs from American Microsemiconductor

American Microsemiconductor, Inc.

Silicon Controlled Rectifiers (SCRs) from American Microsemiconductor Servicing the Semiconductor industry since 1970. With over 17,000,000 electronic components sitting on our warehouse shelves... (read more)

DesignKit: Gate Drive & Current Sense Transformers

Datatronics™

Design engineers looking for a faster, smarter way to specify and test high-reliability transformers for Current Sense and Gate Drive circuit applications will find the new Surface Mount Transformer... (read more)

500 Volt Three Phase BLDC Motor Driver

M.S. Kennedy Corp.

The new MSK4357 is a 500 volt rated, three-phase, brushless DC motor driver consisting of the bridge, gate drive, control and protect circuitry, all contained in a compact hermetic metal package... (read more)

We have your Triac

American Microsemiconductor, Inc.

The Triac is a three terminal semiconductor for controlling current in either direction. A triac operates in the same way as the SCR however a triac operates in both a forward and reverse direction. A... (read more)

Topics of Interest

Gate Turn-Off Switch

A gate turn-off switch, also known as a gate-controlled switch (GCS) or gate turn-off thyristor (GTO), is similar to an SCR but can be turned off by a negative signal on the gate terminal. GTOs...

4: Turn-Off Performances

4 Turn-Off Performances There are three ways to turn the thyristor off. Any thyristor structure can be turned-off if cathode-anode bias reduces to the value at which the cathode-anode current is...

Chapter 7: Gate Turn-off Thyristors

Muhammad H. Rashid, Ph.D. Electrical and Computer Engineering, University of West Florida, 11000 University Parkway, Pensacola, , Florida 32514 5754 , USA 7.1 Introduction A gate...

Explanation of Maximum Ratings and Characteristics for Thyristors

Data sheets for SCRs and triacs give vital information regarding maximum ratings and characteristics of thyristors. If the maximum ratings of the thyristors are surpassed, possible irreversible damage...

Gating, Latching, and Holding of SCRs and Triacs (.pdf)

Gating, latching, and holding currents of thyristors are some of the most important parameters. These parameters and their interrelationship determine whether the SCRs and triacs will function...