MURATA BLM31PG330SN1

Mfr. Part

BLM31PG330SN1

Manufacturer

Murata Electronics

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Detailed Description

Murata BLM31PG330SN1 is a multilayer chip ferrite bead for EMI noise suppression on power and signal lines.

1206 (3216 metric) footprint, 2-terminal SMD component.

Nominal impedance code “330”. Refer to the datasheet for the exact impedance at 100 MHz, DC resistance, and rated current.

Broad-frequency attenuation (typically effective from MHz into GHz).

RoHS compliant, lead-free, halogen-free construction.

Note: Listed under Integrated Circuits (ICs) / Specialized ICs here for catalog convenience, but functionally it is a passive EMI filter component.

Key Features

Strong high-frequency noise attenuation with minimal DC voltage drop.

Low DC resistance supports high current lines.

Compact 1206 size fits dense layouts.

Stable performance over temperature and bias conditions.

2-terminal, non-polarized, easy SMT placement and reflow.

Compatible with standard tape-and-reel packaging and automated assembly.

Key Advantages

Quick, drop-in EMI fix without redesigning the circuit.

Helps meet EMC compliance by reducing radiated and conducted emissions.

Protects sensitive ICs and RF receivers from high-frequency interference.

Maintains signal integrity thanks to low DCR.

Reduces BOM complexity compared to more complex LC filters.

Packaging

Type: SMD multilayer chip ferrite bead; supplied in tape-and-reel for automated pick-and-place.

Material: Ferrite ceramic core; copper electrodes; nickel barrier with matte tin plating; lead-free and halogen-free.

Size: Approx. 3.2 mm x 1.6 mm x 1.1–1.3 mm (1206 / 3216 metric).

Pin configuration: 2 terminals in-line; no polarity; orientation per Murata taping standards.

Thermal characteristics: Typical operating range -55°C to +125°C; apply current derating to manage self-heating and ensure reliability.

Electrical properties: Nominal impedance code 330 with frequency-dependent attenuation peaking around the high-MHz range; low DC resistance; high rated current capability for power-line use. See the datasheet for exact impedance curves, DCR, rated current, and bias behavior.

Package / Case reference: 1057 (site classification). Standard reel options available; confirm reel diameter and quantity at order. Current stock example: 2400 pcs available; reel counts may vary by lot.

Lifecycle

Status: Active and in continuous production. Not near discontinuation based on current market availability.

Alternatives within Murata (same 1206 family; verify exact specs):

- BLM31PG331SN1 (similar 330-class impedance)

- BLM31PG220SN1 (22-class impedance, lower impedance option)

- BLM31SN series (general-purpose 1206 beads with varied impedance options)

Cross-brand equivalents in 1206 / 3216 size (check form/fit/function via datasheets):

- TDK MPZ3216S331A or MPZ3216S330 series

- Taiyo Yuden BK3216HS331-T series

- Bourns SBH3216 series (e.g., SBH3216-331)

- Laird MI1206 series with 330-class options

If you need a precise equivalent or guidance selecting an alternate, contact our sales team via the Y-IC website for expert support and up-to-date recommendations.

Key Application Areas

Power rails of MCUs, FPGAs, ASICs, and RF modules to block RF noise.

DC/DC converters and SMPS input/output lines for EMI suppression.

High-speed interfaces such as USB, HDMI, LVDS, MIPI to control emissions.

Consumer electronics, industrial controllers, IoT devices, and networking gear.

Datasheet

Y-IC hosts the most authoritative, up-to-date datasheet for BLM31PG330SN1. Download it from this page to get exact electrical ratings, impedance vs. frequency, tape-and-reel specs, recommended land patterns, and assembly guidance.

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