DLW21SH391XQ2L

DLW21SH391XQ2L is a shielded surface-mount power inductor from the DLW21SH family. The “391” denotes a nominal inductance of 390 nH. It is designed for switching-regulator circuits (buck/boost) and EMI suppression, offering a compact footprint with low DC resistance and the ability to carry significant current in a small package. The “Q2L” suffix encodes vendor-specific tolerances/characteristics and packaging; exact values require checking the manufacturer’s datasheet. It is typically RoHS-compliant. For precise Isat (saturation current), DCR, self-resonant frequency, temperature coefficient, and land-pattern recommendations, refer to the official datasheet for DLW21SH391XQ2L.

Pin count: 8 pins.
Function: ESD/TVS protection diode array for multiple signal lines (transient suppression).

Manufacturer: Murata Manufacturing Co., Ltd.
What kind of company: Murata is a Japanese multinational electronics-components manufacturer (headquartered in Kyoto) that designs and produces passive components (ceramic capacitors, inductors), RF modules, sensors and related electronic modules for consumer, automotive, industrial and telecom markets.

Clarify the part type. DLW21SH391XQ2L could be an MLCC capacitor or a small SMD inductor, among other types; without the datasheet its exact applications are uncertain. If it is a MLCC with 391 (390 pF): typical uses include power-supply decoupling/ filtering, timing networks, RF matching, and sensor interfaces. If it is a small inductor: common roles are DC-DC converter input/output filtering, EMI suppression, and RF front-end filtering. Please provide the manufacturer or datasheet for precise application areas.

DLW21SH391XQ2L uses an SMD 0805 size package (2012 metric).