Vishay Intertechnology, Inc. introduced two new UVC (short wavelength ultraviolet) emitting diodes in a ceramic / quartz-based package for sterilization in medical, industrial, and consumer applications. Compared to previous-generation solutions, the Vishay Semiconductors VLMU35CR40-275-120 and VLMU35CR41-275-120 deliver higher radiant power at a lower cost while offering higher disinfection efficiency and longer service life. The devices […]
diodes
What’s the difference between Shockley and Schottky diodes?
Neither a Shockley diode nor a Schottky diode are single p-n junction devices. A Shockley diode has a four-layer thyristor structure with a typical forward drop of 800 mV. It’s called a diode because it has two leads. A Shockley diode is essentially a SCR with the gate not connected. In a Schottky diode a […]
Fast recovery diodes feature low loss, ultra-low noise
ROHM Semiconductor announced its fourth generation 650V fast recovery diodes (FRDs), the RFL/RFS Series, featuring low forward voltage (VF) and fast reverse recovery time (trr), respectively, as well as ultra-low noise characteristics. The new devices are ideal for industrial and consumer equipment that handle large amounts of power, such as air conditioners and EV charging stations. In […]
USB PD3.0 sink controller ICs target appliances, cordless power tools
Diodes Incorporated continues to strengthen its portfolio of USB power delivery (PD) solutions by bringing two new high-performance USB PD3.0 sink controller ICs to the market. The DIODES AP33771 and DIODES AP33772 sink controllers are targeted at home appliances and cordless power tools, enabling the appropriate voltage level to be negotiated via USB-C. They have an […]
IGBTs incorporate free-wheeling diodes for power transmission/distribution apps
Infineon Technologies Bipolar GmbH & Co. KG expands the high-power Prime Switch family with the new Press Pack IGBT (PPI) with internal freewheeling diodes (FWD) in Ceramic Disc Housings. This PPI is specifically designed for transmission and distribution applications and is ideal for high current Modular Multilevel converters (MMC), medium voltage drives, DC breakers, wind […]
High-efficiency low-voltage 3-A buck converter targets automotive designs
Diodes Incorporated has introduced the automotive-compliant DIODES AP61300Q and DIODES AP61302Q synchronous buck converters. These 3A-rated devices have a wide input voltage range of 2.4V to 5.5V and address the need for automotive point-of-loads (POLs) that are more streamlined and exhibit increased efficiency levels. They are optimized for use in vehicles’ telematics, ADAS, power and infotainment […]
High-current Schottky diodes feature small form factor
Diodes Incorporated has announced the introduction of a series of high-current Schottky rectifiers in ultra-compact chip-scale packages (CSPs). The DIODES SDM5U45EP3 (5A, 45V), DIODES SDM4A40EP3 (4A, 40V), and DIODES SDT4U40EP3 (4A, 40V) achieve the industry’s highest current densities in their class, addressing market demands for smaller and more powerful electronic systems. Each device can be employed for a […]
Low-capacitance TVS diodes protect high-speed data lines
Littelfuse, Inc. announced the new SPxxR6, a series of four-channel, low capacitance (0.2pF) TVS diode arrays. These robust diodes provide extremely low breakdown/turn-on voltages, making them ideal protectors of high-speed data lines with low voltage (-0.3 to +0.3V). They can safely absorb repetitive ESD strikes above the maximum level specified in IEC 61000-4-2 international standard […]
Controller IC emulates ideal diode to boost reverse discharge protection
Diodes Incorporated has announced an ideal diode controller for system protection against reverse discharge. Emulating an ideal diode, by driving a P-channel MOSFET, the DZDH0401DW controller provides the high-side rail isolation necessary for reverse current blocking, in systems up to 40V. The compact size and high-performance capabilities of this arrangement mean that it is optimized […]
50 µA Zener diodes extend battery time and save PCB space
Nexperia announced a comprehensive range of low current voltage regulator diodes. The 50 µA Zener diode range is available in three different surface-mountable (SMD) package options, in an ultra-small Discretes Flat No-leads (DFN) package and AEC-Q101 qualified parts, providing the ultimate in customer choice and flexibility. Specified at a low test current (50 μA), the […]
