The 0402DF-821XJRW is a 0402DF series wirewound ferrite bead designed for high-frequency noise suppression in power supplies and RF signal isolation. It has a 0402 (1005) surface mount package with dimensions of 1.00 mm × 0.50 mm × 0.55 mm. The part exhibits an impedance of 486.4 ohms at 100 MHz and 6800 ohms at 900 MHz, with a self-resonant frequency of 850 MHz and a maximum DC resistance of 1.48 ohms. It supports a rated current of 230 mA with a 15°C temperature rise. The component complies with AEC-Q200 Grade 1 for operation from -40°C to +125°C and is halogen-free with RoHS-compliant matte tin terminations. Its ferrite construction and heavy-gauge wire enable high current handling without saturation. The part is packaged in a 7" machine-ready reel with 2000 units per reel.
Our 0402DF Series wirewound ferrite beads have higher performance than others in the market, including high impedance across a wide bandwidth - up to GHz band. Ferrite construction and heavy gage wire means high current handling for 0402 size. Extremely low DCR assures lowest insertion loss for high efficiency in mobile applications. These small beads eliminate noise in small power supplies and provide isolation of RF signals. They can withstand high temperatures and are AEC-Q200 Grade 1 (−40°C to +125°C) qualified.
Need parts for space, military or other critical applications?
See Coilcraft AR235RAR Series | See Coilcraft ST235RAR Series
Our 0402DF Series of wirewound ferrite chip inductors have the industry's lowest DCR in an 0402 size – up to 30% lower than the closest competitor. This series was developed for cellular applications for use as either filter elements, as one-pole filters, or as RF chokes in the cellular bands. These are ideal for use in mobile and infrastructure equipment.
Need parts for space, military or other critical applications?
See Coilcraft AR235RAR Series | See Coilcraft ST235RAR Series
| Coilcraft, Inc. | Coilcraft, Inc. | |
|---|---|---|
| Product Category | Inductors, Coils, and Chokes | Inductors, Coils, and Chokes |
| Product Number | 0402DF-821 0402DF-821XJRW | 0402DF-821 0402DF-821XJRW |
| Product Name | 0402DF (1005) Series Wirewound Ferrite Beads | 0402DF Ferrite Chip Inductors |
| Operating Temperature | -40 to 125 C (-40 to 257 F) | -40 to 125 C (-40 to 257 F) |
| Core Material | Ferrite; Ferrite | Ferrite; Ferrite |
| Application | RF Choke | RF Choke |
| Inductance Range | 0.8200 microH | 0.8200 microH |
| DCR | 1.48 ohms | 1.5 ohms |
