Würth Elektronik is adding high-temperature variants to two series of pressed accumulator chokes: WE-MAPI and WE-LHMI. The new inductors can be used permanently at high nominal currents in a temperature range of -55 °C to +150 °C. The compact devices have been tested for thermal aging for more than 1,000 hours at 200 ºC and are AEC-Q 200 qualified.
High temperatures lead to signs of aging in inductors with a magnetic core made of iron alloy. Core losses rise sharply and efficiency decreases. In addition, aging can lead to greater self-heating of the component, which further aggravates thermal aging. With the expansion of the inductor series, Würth Elektronik now offers storage chokes that are free of thermal aging and do not suffer any loss of performance.
The SMT memory chokes feature low losses, high efficiency, lightweight design, and low profile. Their high current carrying capacity and ability to handle high transient current spikes can be used, for example, in applications such as DC/DC converters for high currents in power supplies or for Field Programmable Gate Arrays (FPGA), Point of Load (POL) converters or CPU/RAM power supply.
