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Zener Barriers

 

 

Zener barriers are passive devices that contain Zener diodes, resistors, and fuses to limit excess voltage and current. These are the basic building blocks which are contained in all other intrinsically safe barriers There is always a voltage drop across Zener barriers because of resistance. Proper selection of the Zener barriers is required as well as a ground connection. The Zener diode barrier works by diverting potentially dangerous energy to ground before it can reach the hazardous area. They limit the fault voltage to the hazardous area. The barrier must protect against dangerous energy and allow the loop to function normally.

Products & Services
Intrinsic safety (IS) barriers are devices that limit the current, voltage, and total energy delivered to a sensor in a hazardous area or flammable environment in order to prevent an explosion. Search by Specification | Learn more about Intrinsic Safety Barriers
Zener diodes are PN junction devices that are designed to operate in the reverse-breakdown region.   Search by Specification | Learn more about Zener Diodes
Specialty diodes are specialty or proprietary products and accessories related to diodes. Learn more about Specialty Diodes
Voltage references are electronic circuits that produce a constant output voltage (reference) that is used to compare other voltages in a system. Search by Specification | Learn more about Voltage Reference Chips
Diodes are electronic components that conduct electric current in only one direction, functioning as a one-way valve. Diodes are manufactured using semiconductor materials such as silicon, germanium or selenium and are used as voltage regulators, signal rectifiers, oscillators and signal modulators / demodulators. Search by Specification | Learn more about Diodes
Product Announcements
American Microsemiconductor, Inc. - Zener Diodes from AMS
The Zener diode provides an accurate reference voltage and has many applications and uses. (read more)
American Microsemiconductor, Inc. - TEMPERATURE COMPENSATED ZENER DIODES BY AMS
THE TEMPERATURE COMPENSATION IS A VERY IMPORTANT CONSIDERATION IN ZENER DIODE SELECTION... (read more)
Tyco Electronics, Raychem Circuit Protection Products - New PolyZen Devices Help Protect DC Power Ports
PolyZen polymer enhanced, precision Zener diodes are designed to meet the growing need for overcurrent and overvoltage protection on portable equipment that utilizes barrel jacks for DC power input. (read more)
American Microsemiconductor, Inc. - MILITARY TYPE 5 Watt, High Reliable Zener Diodes
If you thought 5 watt Hermetically sealed zeners were discontinued- check this out ! MILITARY TYPE, 5 Watt, High Reliability Zener Diodes in a Hermetically sealed glass package now from AMS. (read more)
Tyco Electronics, Raychem Circuit Protection Products - PolyZen Devices
Polymer protected, precision zener diodes: The PolyZen device is a thermally protected, precision zener diode that helps protect circuits from overvoltage and overcurrent fault conditions. (read more)
Frontier Electronics Corp. - ZS SERIES
1 WATT ZENER DIODES-PLASTIC... (read more)
American Microsemiconductor, Inc. - 1N5221B Zener diodes by AMS
High Voltage Zener diodes - 100Volts to 200 Volts 500mW, DO-35, Glass, Hermetically sealed, Zener Diodes Maximum Power Dissipation PD = 500 mW, above 75° C derate 4 mW/°C Surface mount melf also... (read more)
RDP Electrosense - Compact LVDT
Compact LVDT from RDP Group RDP's DCTH series of DC-DC LVDTs offers ranges up to 0.8 inches (20mm) in a short body length with outputs of 0-10 and +/- 5 volts. Improved linearity and other standard... (read more)
ArtUSA Noise Control Products, Inc. - Noise Barrier
Noise Control and Soundproofing Inc.'s acoustical sound barrier & noise control barrier products used for noise control in Commercial Acoustic Applications, Home Theater Acoustics, Audio rooms,... (read more)
American Microsemiconductor, Inc. - Diverse Selection of Semiconductors from AMS
SEMICONDUCTOR BUYING SHOULD NOT TAKE TIME, MONEY, OR ENERGY. USE THE AMERICAN MICROSEMICONDUCTOR YAHOO! STORE FOR PURCHASING. (read more)
Topics of Interest
Although Zener diodes may sound different then silicon-controlled rectifiers (SCRs), they are both found where voltages must be controlled or regulated. This chapter describes how Zener diodes operate... (Read More)
In electronics, a diode is a component that restricts the direction of movement of charge carriers. Essentially, it allows an electric current to flow in one direction, but blocks it in the opposite... (Read More)
12.1 Introduction and History Semiconductor voltage references are basic electronic building blocks that are used extensively in OEM circuit board designs, as well as integrated into the designs of... (Read More)
13.1 Introduction The zener diode was the first discrete semiconductor device to be used as a basic voltage reference. It was created in the late 1950s by its inventor Clarence Zener, a Westinghouse... (Read More)
Z The symbol for impedance, measured in ohms. ZAK Zero Administration Kit ZAWS Zero Administration For Windows ZBTSI See: Zero Byte Time Slot Interchange Zener Breakdown... (Read More)
See more product announcements for Intrinsic Safety Barriers
Remote I/O system for zone 1 ethernet

Remote I/O system for zone 1 ethernet
R. STAHL, Inc.


STAHL advance power supply for FOUNDATION fieldbus

STAHL advance power supply for FOUNDATION fieldbus
R. STAHL, Inc.


Intrinsically Safe Temperature Transmitter SIL 2

Intrinsically Safe Temperature Transmitter SIL 2
R. STAHL, Inc.


11 See more product announcements for Intrinsic Safety Barriers