These varistors (MLVs, CeraDiode and CTVS) offer surge current ratings similar to those of disk varistors as alternatives to TVS diodes but give the advantages of allowing smaller and more robust designs. The EPCOS B72*T* series of SMD multilayer varistors are offered in a broad range of types and in compact case sizes 0201 to 2220. Features include no derating up to +125C and low leakage current. The components are UL compliant, with ESD accredited to IEC 6100-4-2 and surge accredited to IEC 60060-4-5.

Applications for the series comprise offering ESD protection in NFC and interfaces (CAN, Ethernet, USB 2.0, USB 3.0, and bus systems). They are also a great fit to provide high energy transient/surge protection for thermostats, and PoE plus multiple security applications including detection (motion, vibration, opening, breakage of glass, access control, burglar, smoke, heat and water alarms); sender (manual pull stations, emergency call senders, assault senders) and communication modules (ISDN, CSM, info modules, control panels).

Matched to work with MOSFETs or high-speed IGBTs, the devices are optimised for PFC and output rectification stages for booster stages for solar inverters, EV/HEV battery charging stations, and UPS and welding applications. The rectifiers offer up to 10% lower losses than do comparable silicon solutions, decreasing the efficiency gap with SiC diodes in half and giving a cost-effective alternative for applications with frequencies in the range of 50kHz.

Both 30A and 60A rectifiers are offered in the TO-247L package and in X-type Hyperfast and H-type Ultrafast speed classes. 30A devices are also provided in the TO-220AC. X-type rectifiers give the advantage of lower QRR, while H-type devices offer lower forward voltage. Both provide the same forward voltage as competing solutions while delivering up to 40% lower switching losses and QRR, respectively. The components offer high-temperature operation to +175C.

The device is UL 1449 Type 5 rated and RoHS compliant. Typical applications include AC Line Protection in white goods, power line communications, smoke alarm systems, high-value consumer goods; and DC Line Protection in solar inverters, power supplies, and distribution systems.

The LMK05318 is a BAW-based network synchronizer, that can be utilised in combination with quartz crystals to eliminate digital noise or jitter from input signals in the communication sub-system of wired or wireless infrastructure hardware in data centre core networks. The digital noise removal benefits telecom systems such as 5G networks.

The oscillator provides reliable, high-accuracy timing and wakes up 100 times quicker than quartz crystals. The technology can be employed to better network performance and improve immunity to vibration and shock in a broad variety of applications. The company’s resonator technology allows high-performance, highly accurate resonators, which when combined into the MCU package remove the requirement for external quartz crystals without compromising power, latency or frequency stability.

Vehicle technology has rapidly developed in recent years to include ADAS and sophisticated IVI while moving ever closer to wholly autonomous operation. As a result, vehicle communication busses transport increased-bandwidth data from higher resolution image sensors and more complex ECUs. To sustain this traffic, the 1000BASE-T1 standard is anticipated to become widespread in the future.

The device supports the S-Parameter characteristics specified by the OPEN alliance automotive network standard organization and satisfies the characteristics for noise filters in 1000BASE-T1 communications. Through the application of the company’s winding technology and using a unique winding structure, the device is the smallest currently available, measuring just 3.2mm x 2.5mm x 2.5mm and weighing just 0.064g. It provides an inductance value of 100uH and a typical DC resistance of 2.6Ohm and is rated for currents up to 100mA.

Compliant with the AEC-Q200 automotive standard, the common mode choke coil provides an extended temperature range of -40C to +125C, making it ideal for demanding automotive applications.

The high-reliability radial-mounting AY1 series is qualified to AEC-Q200, satisfying the stringent demands for use in automotive. The series has been tested to withstand the rigours of the 85/85/1000h test (85C /85% relative humidity for 1000 hours), as well as passing 1000 temperature cycles from –55C to +125C. Also, the series also passes the high-voltage 10kV pulse test (10 per polarity).

The devices also meet IEC60384-14.4, which gives specifications for fixed capacitors for EMI and RFI generation and suppression, as well as for mains supply connection. The series is, therefore, ideally suited for deployment as Class Y1 safety capacitors in industrial and automotive environments, for example in AC-line filtering and primary-secondary coupling on battery chargers for various types of electric vehicles including HEV/PHEVs (hybrid/plug-in hybrid electric vehicles), or as filter capacitors on DC/DC converters in PHEVs.

Key electrical characteristics comprise a capacitance range from 470 up to 4700pF with a tolerance of 20% and voltage ratings up to Class X1 (760 VAC)/Y1 (500VAC) and 1500VDC. The capacitor’s ceramic disc is copper plated on both sides, and features tin-plated copper-clad-steel connection leads with diameters of 0.6mm or 0.8mm. Available with straight leads with spacings of 10.0 or 12.5 mm, the devices are encapsulated in flame-retardant epoxy resin, in accordance with UL94V0.

“Market demand for smaller and lighter electronic products remains consistent and, despite regular component innovation and the on-chip integration of many components, also remains challenging for design engineers,” said Mitch Weaver, a member of the technical staff at AVX. “Discrete passive components still occupy a majority of board space in PCB designs, so we are now penetrating the PCB with a new generation of embeddable components, like our new 3216-05 TACmicrochip capacitor, that allows engineers to reliably achieve the small, thin, mechanically robust, and electrically stable designs that next-generation applications demands.”

Manufactured using a tantalum wafer process to deliver the high levels of mechanical tolerance demanded for ultra-miniature devices, these capacitors offer an enhanced internal construction that excludes the space-consuming elements of conventional moulded J-leaded tantalum capacitors, including the anode wire, lead frame, and the need for larger wall thicknesses. Rated for use in temperatures spanning -55C to +125C, the series is generally supplied with tin over nickel terminations, but gold over nickel options are offered as well.

The MLVs are ZnO-based ceramic semiconductor devices with non-linear, bi-directional V-I characteristics comparable to those of back-to-back Zener diodes, but with elevated current and energy handling abilities and the addition of EMI/RFI attenuation functionality. The new MLVs increase the temperature range of overvoltage protection beyond the series portfolio’s previous maximum of 150C.

“The unique design of our new TransGuard VT Series allows AVX to offer the industry’s first and currently only multilayer varistor transient voltage suppressors rated for 175C operation that don’t require derating across the full operating temperature range,” said John Gallipeau, technical marketing manager for power film capacitors and circuit protection at AVX. “These characteristics, combined with the added benefits of greater current and energy handling capabilities in the on-state plus EMC filtering in the off-state, provide automotive and industrial design teams with a compact solution for protecting advanced applications against the transient pulses that so often encountered in harsh, high-temperature environments.”

The series are compact rectangular block types, now with direct mounting options. The new 2SM6 direct-mount uses a through-hole design that is compatible with many current applications. Available in the HC1, HC2, HC3A and HC3B, the new mounting configuration offers the highest level of heat transfer and connectivity. It also removes the requirement for mounting hardware, directly mounting to bus bars.

These devices are a fit for resonant power circuitry with very high current demands. They are rated at up to 1,200A RMS and 1,100VAC. Depending on the capacitance, they are compatible with resonant circuits ranging from 9kHz to 1MHz, with standard capacitance values range from 0.05µF to 37µF. Because corona can be a problem within a capacitor during high-power RF applications, the dielectrics used in both series are impregnated to stop this issue. The LC Series (LC2, LC3, LC4, LC5, LC6) capacitors have flat copper plates to allow safe handling the current and voltage in resonant power circuits.

The company’s conduction cooled capacitors include a self-healing Polypropylene film construction. They are Halogen free, ROHS compliant and meet UL94V0 as flame retardant. Suitable applications include induction heating, RF amplifiers, medical imaging systems, resonant power supplies, welding equipment and electric vehicle charging stations.

The EME32T series provides a frequency of 32.768kHz for real-time clock applications in a 3.28mm x 2.5mm x 1.3mm miniature SMD four-pad package with a selection of supply voltage encompassing 1.8, 2.5, 3, 3.3 and 5V options. Very low current consumption – as little as 0.79µA at 1.8V – is a significant advantage in battery-controlled applications while frequency stability is only ±5ppm over the temperature range from -40C to +85C.

Frequency stability versus voltage change is ±0.2ppm for a ±5% input voltage change, while frequency stability against ageing is ±3ppm maximum for the first year.

Further specifications comprise initial calibration tolerance of ±1.5ppm at 25C ±2%, timing error over time of 2.628m/year, CMOS output logic with load of 15pF, 100ns maximum rise and fall time and duty cycle of 50% ±10%. Start-up time is 1s maximum at 25C (3s maximum over operating temperature range).