Murata Electronics BLM series chip ferrite bead, BLM15HB121SH1D, signal line filter, 120 Ohms @ 100 MHz, 300mA, 700mOhm DCR, 0402 (1005 Metric), AEC-Q200 qualified, -55°C ~ 125°C, Tape & Reel.
| Parameter | Value |
|---|---|
| Series | BLM |
| Filter type | Signal Line |
| Mounting | Surface Mount |
| Current rating | 300mA |
| Impedance @ frequency | 120 Ohms @ 100 MHz |
| Operating temperature | -55°C ~ 125°C |
| Height | 0.022\" (0.55mm) |
| Size (Dimension) | 0.039\" L x 0.022\" W (1.00mm x 0.55mm) |
| Package | Tape & Reel (TR) Cut Tape (CT) |
| Ratings | AEC-Q200 |
| Case | 0402 (1005 Metric) |
| Number of lines | 1 |
| DC resistance (DCR) | 700mOhm |
The BLM15HB121SH1D is a single-line chip ferrite bead from Murata's BLM series, packaged in a 0402 (1005 Metric) footprint. It presents 120 Ohms of impedance at 100 MHz, which is the frequency band where conducted EMI from switching regulators, digital clocks, and data lines typically couples onto a power or signal trace. The 0402 size fits tight layout budgets where a single trace needs a pi-filter or a clean decoupling stub.
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