Vishay Intertechnology will showcase a comprehensive array of passive components and semiconductor solutions addressing power electronics trends at PCIM Europe 2024, such as their 1200 V MaxSiC(tm) series SiC MOSFETs in standard packages designed specifically for industrial use as well as their microBRICK and microBUCK buck regulators.
Power MOSFETs
Power MOSFETs are an advanced type of metal-oxide-semiconductor field-effect transistor (FET), designed to withstand higher levels of current. They boast reduced switching losses at frequencies above 100kHz while maintaining the same form factor, leading to improved system efficiency.
Power MOSFET operation depends upon an interaction between body diode, parasitic NPN bipolar junction transistor (BJT), and base resistance of its base resistor. This leads to capacitance CGDj between source and drain terminals which appears as a voltage ramp when gate-to-source voltage increases; this ramp drives dV/dt turn-on of MOSFET while simultaneously serving as the mechanism by which device turns off when gate-to-source voltage decreases.
Vishay’s MaxSiC(tm) series of SiC MOSFETs offer ultra-low on resistances ranging from 40m to 250m and reduce power losses for more compact designs with greater power density and lower system costs. Available in standard industrial packages or customized to meet specific customer requirements.
These devices are an excellent solution for power supplies, DC-to-DC converters and motor controllers as well as AC-to-DC power factor correction (PFC). In addition, these devices enable flyback, boost and Totem Pole PFC topologies; their high temperature capabilities allow smaller heat sinks.
Transient Voltage Suppressors
Voltage transients, short bursts of energy generated when an electric load is switched off or its magnetic field collapses (relay coils for example), can damage and ultimately fail circuits if left unprotected. Transient voltage suppressors (TVSs) are semiconductor devices designed to redirect or clamp these transient spikes before they cause harm – keeping loads safe!
These devices can be thought of as avalanche diodes with a fixed PN junction breakdown point set above a specific value, designed to detect surges quickly enough that when detected will enter avalanche mode – quickly stopping current flow and dissipating its energy quickly enough that any transient spike can be reduced substantially within 100ns or so. They are then designed to divert this surge away from any load they encounter within that specified amount of time, typically 100ns or so.
TVS devices may be configured as either unidirectional or bidirectional circuit elements. Unlike standard fuses which provide high-impedance paths between power and signals, these TVS devices offer low impedance paths during normal steady-state operation as well as for surges. They safely route any excess energy of transients down into ground thereby safeguarding sensitive components as well as the circuit as a whole.
Vishay offers an expansive portfolio of surface-mount TVS devices designed to protect from transients and surges in automotive, industrial and consumer applications. This includes its industry-low clamping ratio XClampR family of 24 V transient voltage suppressors which dissipate peak pulse power up to 7 kW in an SMC package.
High-Power Infrared Emitters
IR emitters are small wired transmitters designed to amplify infrared signals sent from your remote control and repeat them infra-redly. Available as either single or dual emitter packages, these emitters come either blink-style or blast-style transmission options – where blink style emitters flash visible light to send data directly into one component source while blast style emitters transmit infrared energy simultaneously into multiple component sources.
This kit comes complete with two high power infrared emitters capable of operating between 100mA-200mA pulsing current for 10+ meters range, powered by an onboard N-channel FET driver controlled with a 2mm pitch STEMMA JST PH connector equipped with headers or alligator clips on either end for easy connection and operation. No soldering is required to get maximum range for your Arduino or Raspberry Pi projects using this kit!
Mouser Electronics is proud to be an authorized global distributor for Vishay’s semiconductor and electronic component products, such as their revolutionary low-power short, mid, and long wave infrared (SWIR/MWIR) emitters. These products provide optimal performance for applications such as gas detection, moisture sensing, flame monitoring, medical diagnostics, optical switching military use and material sorting by wavelength. Based on Vishay’s SurfLight surface emitter chip technology, these infrared emitters offer high radiant intensity of up to 235 mW/sr at 100 mA drive current with fast switching times and narrow +- 10deg angle of half intensity in surface mount packages of 3.4mm by 3.4 mm dimensions. They comply with RoHS regulations while remaining halogen-free – boasting Vishay Green marking as RoHS compliant products.
Discrete Diodes
Discrete semiconductors are an indispensable element of modern electronics. Unlike integrated circuits that combine multiple functions into a single package, discrete semiconductors consist of individual elements designed to perform specific electrical functions. Diodes are one such discrete semiconductor with unidirectional behavior that allow current to flow in one direction but block it going in the opposite one. As such they play an essential role in signal conditioning and AC power rectification devices and systems.
Diodes are two-terminal devices consisting of an anode and cathode. When applied with voltage in forward bias condition, diodes conduct with very little voltage drop; but once reverse voltage exceeds certain threshold values they become an insulator and block current flow through them.
Vishay Intertechnology’s extensive line of discrete semiconductors includes Gen 3 1200 V silicon carbide (SiC) Schottky diodes that offer superior surge current protection, low forward voltage drop, capacitance charge, and reverse leakage current compared to pure silicon Schottky devices. Furthermore, their higher temperature operation and increased ruggedness allow them to become key elements of switching power design solutions.
English 
Swedish