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Murata Electronics BLM15EX221SN1D — EMI Filters & Ferrite Beads

BLM15EX221SN1D Murata Ferrite Bead, 220 Ohm @ 100MHz, 1.3A

MPNBLM15EX221SN1D
Active

Murata Electronics EMIFIL® BLM15 series ferrite bead, 0402 (1005 Metric) package, 1 line, 220 Ohms @ 100 MHz, 1.3 A, 140 mOhm DCR max.

$0.1700Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

BLM15EX221SN1D specifications
ParameterValue
SeriesEMIFIL®, BLM15
Filter typePower, Signal Line
MountingSurface Mount
Current rating1.3A
Impedance @ frequency220 Ohms @ 100 MHz
Operating temperature-55°C ~ 125°C
Height0.022\" (0.55mm)
Size (Dimension)0.039\" L x 0.022\" W (1.00mm x 0.55mm)
PackageTape & Reel (TR) Cut Tape (CT)
Case0402 (1005 Metric)
Number of lines1
DC resistance (DCR)140mOhm

Product details

220 Ohm suppression at 100 MHz, 1.3 A continuous

The Murata BLM15EX221SN1D is a single-line ferrite bead from the EMIFIL BLM15 series, delivering 220 Ohms of impedance at 100 MHz — the frequency where conducted EMI from switching regulators and digital clocks typically peaks. Rated for 1.3 A continuous current, it handles moderate power rails without saturating the ferrite material.

0402 footprint, active production

Housed in the standard 0402 (1005 Metric) package — 1.00 mm x 0.55 mm, 0.55 mm seated height — this bead fits into any high-density PCB layout where board space is at a premium. The surface-mount termination is compatible with reflow soldering profiles for lead-free assemblies.

Frequently asked questions

How can I order BLM15EX221SN1D or check availability?

The BLM15EX221SN1D is an active-production part sourced through independent distribution. No minimum order quantity is enforced for standard reel quantities.

What is the impedance of BLM15EX221SN1D at 100 MHz?

It provides 220 Ohms of impedance at 100 MHz, which is the typical suppression peak for conducted EMI from switching power supplies and high-speed digital lines.

What is the maximum DC resistance and current rating?

The DCR is 140 mOhm maximum, and the current rating is 1.3 A continuous. The low DCR ensures minimal voltage drop on low-voltage supply rails.

What package size is BLM15EX221SN1D?

It comes in the 0402 (1005 Metric) surface-mount package, measuring 1.00 mm x 0.55 mm with a maximum seated height of 0.55 mm.