Zener Diode
current flow from cathode to anode reverses when zener voltage reached.
See Also: Diode, Laser Diode, Diode Test, Photodiode
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Atlas ZEN Zener Diode Analyser
ZEN50
The Atlas ZEN is ideal for testing Zener diodes (including avalanche diodes), transient suppressors, LEDs and LED strings.
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Rebuilt Testers
Lorlin® manufacturers New and Rebuilt Discrete Component Semiconductor Test Systems for Transistors, Diodes, Zeners, Fets, IGBTs, SCRs, Triacs, Optos, Small Signal and Power Semiconductors. We measure, screen, test, analyze, characterize and sort the critical parameters of semiconductors devices including Leakage Current, Breakdown Voltage, Gain, Saturation Voltages, and offer a comprehensive test parameter library with an easy to use Windows based applications software. The systems us a Windows 10® 64-BIT Operating System with a USB 2.0 Interface. Engineering excellence, innovation, creativity and cutting edge technology has made Lorlin equipment well known for testing discrete components.
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Signal Interface
Our signal interface products provide signal conversion and electrical isolation between sensors and other field devices and a control circuit. Intrinsic safety modules add Zener diodes, which limit the amount of electrical energy on intrinsically safe circuits.
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Diode Tester
FEC VF40CM
Frothingham Electronics Corporation
The VF40CM is intended for testing VF, HALF CYCLE SURGE, and THERMAL RESPONSE/RESISTANCE on small- and medium-power diodes and rectifiers. It can also measure THERMAL RESPONSE/RESISTANCE on NPN and PNP bipolar transistors using an external user-supplied VCB supply.The VF40CM also is sometimes used to measure VZ of low-voltage zener diodes up to the compliance voltage limit of the tester. 20V at 20A is possible.
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Shunt Voltage References
Analog Devices offers a broad line of shunt precision voltage references that combine excellent accuracy and temperature stability with low noise and small packages. These devices operate in a manner that is functionally equivalent to a Zener diode. The bias current must be set higher than the sum of the maximum quiescent current of the voltage reference and the maximum expected load current. Since shunt voltage references are typically biased with a resistor, the voltage reference can operate on a wide range of input voltages.
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Shunt Regulators
These are the standard reference voltage source widely used by the feedback circuits of switching power supplies. Compared to the Zener diode, which is a discrete product, a shunt regulator has much better voltage precision because voltage control is carried out as an IC.
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Capacitor Leakage Current/IR Meter
TH2689A
Changzhou Tonghui Electronic Co., Ltd.
TH 2689/TH2689A provides max. test voltage: 800v/500v, charge current: 0.5mA─500.0mA( if >100V, the max. power 50W can limit). It is mainly applied in capacitance leakage current, insulation resistance and aluminum electrolysis capacitance anode foil pressure test. Also it can be applied in the confirmation of annihilator, zener diode, neonbulb .etc and leakage current test. Standard Handler interface, stable and rapid test, to reach the sorting effect
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Capacitor Leakage Current/IR Meter
Chroma 11200
Chroma Systems Solutions, Inc.
The 11200 Capacitor Leakage Current / IR Meter is mainly used for electrolytic capacitor leakage current testing and aluminum-foil withstand voltage testing (EIAJ RC-2364A). The 11200 can also be used for active voltage checking or leakage current testing of absorber, Zener diode, and Neon lamp etc. With the standard RS232 interface, optional GPIB & Handler interfaces, high speed and stable measurement capabilities, the Chroma 11200 can be used for both component evaluation on the production line and for fundamental leakage current or IR testing for bench top applications.
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Limiter Diodes
The SemiGen SLP7100 series of Limiter Diodes are processed with a high-resistivity epi that have thin intrinsic layers. These devices are typically in the 2 to 20 micron range of epi thickness and can be gold doped to achieve specific performance goals. These diodes are used in passive or active limiter designs in the 100 MHz to 30 GHz frequency ranges. They are ideal for use in high-power applications and can be supplied in chip form or in your choice of packages below.
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SiC Diodes
ST’s silicon carbide diodes range from 600 to 1200 V – as single and dual diodes – and feature unbeatable reverse recovery characteristics and improved VF. Available in a wide variety of packages, from D²PAK to TO-247 and the insulated TO-220AB/AC, they offer great flexibility to designers looking for efficiency, robustness and fast time-to-market. ST’s SiC Schottky diodes show a significant power-loss reduction and are commonly used in hard-switching applications such as high-end-server and telecom power supplies, while also intended for solar inverters, motor drives and uninterruptible power supplies (UPS). ST’s automotive-grade 650 and 1200 V SiC diodes – AEC-Q101-qualified and PPAP capable – feature the lowest forward voltage drop (VF) on the market, for optimal efficiency in electric vehicle (EV) applications.
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Steering Diodes
ProTek's low capacitance Steering Diode Arrays provide high-speed data line and I/O port protection from transients caused by Electrostatic Discharge (ESD), Electrical Fast Transients (EFT), Tertiary Lightning and other induced voltages. Steering diodes divert the transient to the power-bus or ground and away from sensitive IC components.
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Laser Diodes
With over 30 years of considerable experience in photonics industry, USHIO offers a wide range of high-quality Laser Diodes. They are available in different intensities and sizes, suitable for each and any application. These are industrial quality, reliable laser diodes offering high powers and low operating currents, long lifetimes and energy efficiency. All USHIO laser diodes are RoHS compliant. It is also possible to produce Laser Diodes to customer specifications. We offer technical support helping you select the ideal laser diode to get the most from your application. For laser diodes we are offering both test data and wavelengths selection on request. Please feel free to contact us (link) – we will be happy to help you.
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Laser Diodes
Our laser diode portfolio is broad, extending from cw laser diodes to pulsed laser diodes to high-power laser diodes. For special areas of application VCSELs and quantum cascade lasers are also included in our range of products.
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Laser Diode
Yisinc Optical Technology Co., Ltd
Laser diode is an efficient radiation source for CW and pulsed operations.
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Diode Lasers
Spot Creator
Advanced Photonic Sciences LLC
Spot Creator is an innovative accessory developed for enhancing the performance of blue laser diode based engraving and cutting machines. Spot Creator solves a major problem with using asymmetric blue laser diodes: the production of engraving features that are different in the X-Y directions, resulting in unequal or blurred lines. Using Spot Creator, line widths are equal in the X-Y directions, with a minimum spot of 50 μm. The intensity on the engraved part is thus maximized.
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Gunn Diodes
The Gunn diode is the best known and most readily available device in the family of transferred electron devices (TED). They are employed as DC to microwave converters using the negative resistance characteristics of bulk Gallium Arsenide (GaAs) and only require a standard, low impedance, constant voltage power supply, thereby eliminating complex circuitry. Teledyne Lincoln Microwave’s DC1200 series of GaAs Gunn diodes is designed for operation at fixed frequency (determined by the oscillator cavity) within a specified band under CW or pulsed conditions.
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Step Recovery Diodes
SemiGen’s SSR series of Step Recovery Diodes are epitaxial silicon varactors which provide high output power and efficiencies in harmonic generator applications. Using custom epitaxial wafers, our process ensures high reproducibility. The silicon dioxide passivation process assures greater stability and low leakage currents over temperature. Uniform capacitance ensures repeatability from device to device. These diodes are available in chip or packaged form.
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Laser Diode Characterization Testing
The Yelo Laser Diode Characterization system performs automated characterization of a laser device. The system will allow the operator to load a single packaged Laser device into a TEC controlled fixture mount. Each test station (LIV, Spectrum, Far Field/Beam Divergence) will then automatically align with the Laser Device in a sequential order and perform the automated tests required of each station.
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Schottky Diodes
SemiGen’s Silicon Schottky Diodes are designed for applications through 40Ghz. The special process technology utilizes various metal schemes to provide excellent performance of Low, Medium, and High Barrier applications. The end result is a low resistance diode with tightly controlled capacitance which allows for optimum performance. Low conversation loss and superior TSS make these diodes ideal for detector / mixer applications with frequency ranges from S band to Ka band as well as modulators, lower power limiters and high speed switches.
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Laser Diode Burn-In Testing
Laser reliability testing consists of a series of tests that laser diodes can be put under in order to ensure their reliability for post-production use. There are different types of tests that can be carried out and there are multiple measurements that can be taken in order to evaluate the reliability of the device. One of these tests is laser diode burn-in.
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Laser Diodes
ProPhotonix distributes Ushio ex OCLARO /Opnext, Osram, Panasonic, Sony, QSI and Ondax semiconductor laser diode products. Within this range we offer laser diodes with wide ranges of wavelengths and power outputs that suit the diverse needs of our customers.
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Laser Diode Drivers
Arroyo Instruments offers a broad range of laser drivers to meet your exact test needs. From 100 milliamps to 100 Amps, all of Arroyo Instruments' LaserSource benchtop laser drivers include unique features not found on competing products such as optically isolated photodiode and modulation inputs, programmable PD bias, and both RS232 and USB computer interfaces. The LaserSource also has laser diode protection circuits such as interlock, ESD protection, and hardware limits for current and voltage.
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External Cavity Diode Lasers
ECDLs
High-performance ECDLs and injection-locked optical amplifier.
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PIN Diodes
The SemiGen SGP7000 series of PIN Diodes are processed with a high-resistivity epi that have intrinsic layers that range in thickness from 4 micron to 200 micron depending on performance specifications. These devices are typically manufactured with either a robust thermal-oxide passivation or ceramic glass for durable high-power applications. These diodes are made with a grown junction P++ layer that yields abrupt junction structures that provide low punch through voltages and minimize autodoping. They are available as chips or in your choice of packages.
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Diodes And Rectifiers
Vishay is a world leader in diodes and rectifiers, having a broad technology base and a solid position in automotive, industrial, computing, and consumer markets.
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Laser Diode Drivers (LDD)
LDD technology has evolved from driving DVD/CD/Blue-ray optical drives to include laser projection in smartphones, automotive head-up displays (HUDs) and pico projectors. Renesas has developed new LDDs for RGB scanning laser projection systems and laser-based pico projectors. Automotive HUDs are benefiting from big innovations in MEMS projection systems and are now central to advanced driver assistance systems (ADAS) and safety. The latest laser scanned-MEMS projection systems can provide higher resolution images and at a lower cost.
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Bridge Rectifier Diodes
ST’s portfolio of bridge rectifier diodes is intended for primary bridges. In input primary bridge applications, ST's 1200V bridge diodes achieve very low conduction losses thanks to very low forward voltage characteristics. They can operate at up to +175 °C junction temperature, as a result of reduced leakage currents. Bridge rectifier diodes are belonging to the STPOWER family.
