BLM31PG121SN1L Ferrite bead with 120 Ohm impedance at 100 MHz, rated for 3.5A current. Surface mount 1206 package, single line power line filter.
Mfr Part #:

BLM31PG121SN1L

Available from 5 distributors
Mfr Name: Murata
Murata
Ferrite bead with 120 Ohm impedance at 100 MHz, rated for 3.5A current. Surface mount 1206 package, single line power line filter.
Total Stock: 9,672 pcs
$ Price Range: $0.08 - $0.32

BLM31PG121SN1L Available from 5 distributors

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Non-Authorised

BLM31PG121SN1L Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current Rating (Max)
Current Rating (Maximum @ Ambient temperature 125 °C)
DC Resistance (DCR) (Max)
Filter Type
Height (Max)
Impedance @ Frequency
Length
Mounting Type
Number of Lines
Operating Temperature
Storage Temperature
Storage Temperature Range
Tape & Reel
Width

BLM31PG121SN1L Description

Short technical summary and product information.

The Murata BLM31PG121SN1L is a chip ferrite bead designed for power line filtering applications. It offers a typical impedance of 120 Ω at 100 MHz, with a maximum DC resistance of 20 mΩ and a rated current of 3.5 A at 85°C ambient temperature. At 125°C, the current rating derates to 2.0 A. The component operates over a temperature range of -55°C to +125°C and is suitable for consumer, industrial, and medical equipment as per the reference specification.

 

This ferrite bead is housed in a standard 1206 (3216 metric) surface mount package with dimensions 3.20 mm x 1.60 mm and a maximum height of 1.30 mm. It is a single-line filter, ideal for suppressing high-frequency noise on DC power supply lines. The part is RoHS3 compliant and has an MSL rating of Level 1 (unlimited).

 

Designed for use in power equipment, industrial robotics, base stations, and medical devices (GHTF Class A/B/C), the BLM31PG121SN1L provides reliable EMI suppression without compromising current handling capability. Its low DCR minimizes power loss, making it efficient for high-current circuits.

BLM31PG121SN1L Quick Information

Product Type: Ferrite Bead
Series: BLM31_SN
Canonical Name: Murata BLM31PG121SN1L Ferrite Bead, 120 Ohm @ 100 MHz, 3.5A, 1206
Subcategory: Power Line Ferrite Bead

BLM31PG121SN1L Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

BLM31PG121SN1L Estimated Pricing

Qty Low High
1+ $0.32 $0.32
10+ $0.23 $0.23
25+ $0.20 $0.20
50+ $0.18 $0.18
100+ $0.16 $0.16
250+ $0.13 $0.13
500+ $0.12 $0.12
1,000+ $0.08 $0.08
3,000+ $0.08 $0.08

Estimated market price range - modelled values for guidance only, not live distributor offers.

BLM31PG121SN1L Features

  • 120 Ohm impedance at 100 MHz.
  • Rated current 3.5A at 85°C.
  • Low DC resistance of 20mOhm.
  • Surface mount 1206 package.
  • Operating temperature -55°C to 125°C.

BLM31PG121SN1L Applications

  • Power line noise suppression in consumer electronics.
  • EMI filtering in industrial equipment.
  • Suitable for DC power supply lines.
  • Use in renewable energy equipment per datasheet.

BLM31PG121SN1L FAQs

7 frequently asked questions generated from this part’s specifications.
What is the impedance of the BLM31PG121SN1L at 100 MHz?

The typical impedance is 120 Ω at 100 MHz.

What is the maximum DC resistance of this ferrite bead?

The maximum DC resistance is 20 mΩ.

What is the rated current of the BLM31PG121SN1L?

The rated current is 3.5 A at 85°C ambient temperature, derated to 2.0 A at 125°C.

What is the operating temperature range?

The operating temperature range is -55°C to +125°C.

What package does the BLM31PG121SN1L come in?

It is a surface mount 1206 (3216 metric) package with dimensions 3.20 mm x 1.60 mm and maximum height 1.30 mm.

Is the BLM31PG121SN1L RoHS compliant?

It is listed as RoHS3 Compliant, but this status is unverified.

What is the moisture sensitivity level (MSL) of this part?

The MSL is Level 1 (unlimited), but this is unverified.

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