AVX Corporation released a new series of high-temperature, glass-encapsulated multilayer varistors (MLVs) that are qualified to AEC-Q200, rated for operating temperatures up to 150°C, and designed for use in a wide variety of high-energy, harsh-environment automotive underhood, industrial, and oil and gas applications. Comprised of zinc oxide (ZnO) based ceramic semiconductor devices with nonlinear, bidirectional […]
varistors
Metal-oxide disk varistors come in compact packages
TDK has announced the EPCOS Compact S14 AdvanceD-MP series of metal oxide disk varistors that feature smaller dimensions with the same excellent performance as comparable S14 AdvanceD-MP types. The disk diameters of the new B72214P2 varistors range from 13 mm to 14 mm, a reduction of approximately 3 mm. Like their current S14 counterparts, these […]
Automotive-qualified multilayer varistors combine bi-directional overvoltage circuit protection, broadband EMI/RFI filtering
AVX Corporation has released a new series of automotive-qualified multilayer varistors (MLVs) specially designed to exhibit lower breakdown- and clamping-voltage to working-voltage ratios than other standard varistors. Comprised of zinc-oxide-based (ZnO-based) ceramic semiconductor devices with nonlinear, bidirectional voltage-current (V-I) characteristics similar to those of back-to-back Zener diodes, but with greater current and energy handling capabilities […]
Chip varistors optimized for wireless audio apps
TDK has expanded its lineup of chip varistors with the new AVRF101U6R8KT242 for audio equipment, which offers both ESD and EMI protection. This product is intended for audio equipment that uses wireless communications in the 2.4 GHz band. Thanks to optimization of its capacitance of 6.8 pF, the multilayer component features high attenuation at this […]
Multilayer varistors optimized for automotive Ethernet
Multilayer varistors (AVRH10C221KT1R5YA8) for automotive Ethernet have a high ESD robustness for use in especially hostile environments. The new addition to the AVR series from TDK provides reliable ESD protection up to 25 kV (IEC61000-4-2). Moreover, thanks to the extremely precise multilayer technology and optimized manufacturing process, the new chip varistor features a low capacitance […]
Low-capacitance varistors target automotive Ethernet apps
TDK Corporation has expanded its lineup of multilayer varistors with the new AVRH10C101KT1R1NE8 for automotive Ethernet. Thanks to the extremely precise multilayer technology, the product features a low capacitance of just 1.1 ± 0.3 pF, ensuring signal integrity even at the high data rates of automotive Ethernet. With its IEC 1005 package (1.0 x 0.5 […]
Varistors ARE viable for surge protection
by Patrik Kalbermatten, KEMET Protecting sensitive electronic equipment against transient voltages in the form of surges that may be either circuit emanating from relays or motors, or significant ESD events such as lightning strikes, is a vital part of equipment design. Several technologies exist to protect sensitive electronic circuitry from voltage surges, including gas discharge […]
Multilayer varistor transient voltage suppression devices rated for 175°C operation
AVX Corporation released the industry’s first multilayer varistor (MLV) transient voltage suppression (TVS) devices rated for 175°C operation. The new TransGuard VT Series high-temperature MLVs provide extremely reliable bidirectional overvoltage protection across operating temperatures extending from -55°C to 175°C with zero derating across the entire range, are qualified to AEC-Q200, and are currently available in […]
Multilayer varistors protect low-voltage electronics from high-voltage transient surges
Stackpole’s ZV Series of multilayer varistors protect low voltage electronics from high voltage transient surges. The ZV is available in sizes 0603, 0805, 1206, 1210, 1812, and 2220 in ac operating voltages from 2 V to 130V , dc operating voltages from 3 V to 170 V. The ZV offers bi-directional protection in accordance with […]
Varistors include fuse protection
TDK Corporation has extended its EPCOS ThermoFuse family of fuse protected varistors with the new compact NT14 and NT20 series. The new ThermoFuse components feature a footprint that fits into existing circuit board layouts. The NT14 series (disk diameter 14 mm) is designed to absorb maximum surge currents with an 8/20-μs pulse of 6 kA […]
