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Murata BLM21PG221SN1D is a chip ferrite bead from the BLM21 series designed for power line EMI suppression. It provides 220 Ω impedance at 100 MHz, with a maximum DC resistance of 45 mΩ and a current rating of 2 A. The device operates over a temperature range of -55°C to 125°C.
The BLM21 series reference specification covers consumer equipment, industrial equipment, and medical equipment (GHTF Class A, B, and C with limitations). The single-line construction and surface-mount 0805 (2012 metric) package make it suitable for compact power supply designs in a variety of applications.
The ferrite bead measures 2.00 mm × 1.25 mm with a maximum height of 1.05 mm and is supplied in tape-and-reel packaging for automated assembly. Compliance status is reported as RoHS3 in the existing database, though this is not independently verified.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.11 | $0.11 |
| 10+ | $0.08 | $0.08 |
| 25+ | $0.06 | $0.06 |
| 100+ | $0.06 | $0.06 |
| 250+ | $0.05 | $0.05 |
| 500+ | $0.04 | $0.04 |
| 1,000+ | $0.04 | $0.04 |
| 4,000+ | $0.03 | $0.03 |
| 8,000+ | $0.03 | $0.03 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The impedance is 220 Ω at 100 MHz.
The device is rated for 2 A at 85°C and 1.25 A at 125°C.
Maximum DC resistance is 45 mΩ initially, and 90 mΩ after testing.
It operates from -55°C to +125°C.
It comes in an 0805 (2012 metric) surface-mount package measuring 2.00 mm × 1.25 mm with a maximum height of 1.05 mm.
It is a power line filter.
It is reported as RoHS3 compliant, but this status is unverified.