BLA31 inductor surface mount Series

The BLA31 inductor series from Murata is a set of ferrite bead arrays designed primarily for EMI (electromagnetic interference) suppression in surface-mount applications. These components are commonly used in power supplies, switch-mode power converters, and other high-frequency circuits where reducing radiated emissions is crucial. If you're working on designs that require effective EMI filtering without taking up too much board space, these inductors are a great choice. They offer a compact solution that can be easily integrated into PCB layouts, making them ideal for both new design starts and as part of component upgrades in existing boards. One thing worth noting is that engineers tend to reach for these when they need a quick and reliable way to add EMI suppression without complicating their circuit too much. The BLA31 series provides a good balance between performance and size, making it a popular option in many applications where space is at a premium. Additionally, the robust construction of these ferrite beads ensures long-term reliability, which is especially important in demanding environments

Mfr Part #	Quantity Available	Price	Category	Standard Package	Impedance	Tolerance	Current Rating (Max)	Resistance - Initial (Ri) (Min)	Depth	Height	Package / Case	Type	Core Material	Product	Lead Time	Subcategory	Factory Pack Quantity	RoHS	Filter Type	Test Frequency	DC Resistance (DCR)	Impedance @ Frequency	Width	Packaging	Height (Max)	Mounting Type	Length - Overall	Size / Dimension	Termination Style	Operating Temperature	Product Category	EU RoHS	Industry Aliases	MOQ	Unit Pack	Size	Length	Automotive	Leadfree Defin	Current - Output	Material	Temperature - Test	Series	Other Names	Rad Hardened	Military Standard	Inductance	Current - DC Forward (If) (Max)	Diameter	Matchcode	Failure Rate	Standard Leadtime	Application Specifics	Applications	B25/100	Weight	DELETED	SVHC	Tariff No	Current Rating - DC	DC Resistance (DCR) (Max)	Mounting Feature	Function	Resistance	Range deg/s
BLA31AG600SN4D murata electronics	10	1: $2.0467	-	Tape & Reel	60 Ohm	25 %	200 mA	150 mOhm	1.8 mm	1 mm	1206	Chip Bead Array	Ferrite	Ferrite Chip Bead Arrays	49 Days	Ferrite Beads	4000	Lead free / RoHS Compliant	Differential Mode - 4 Line Array	100 MHz	150 mOhm Max	60 Ohm @ 100MHz	1.6 mm	Paper Tape and Reel	0.039" (1.00mm)	Surface Mount	3.4	0.126" L x 0.063" W (3.20mm x 1.60mm)	SMD/SMT	- 55 C to + 125 C	EMI Filter Beads, Chips & Arrays	Compliant	BLA3216A600SG4T1	4000	4000	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
7 BLA31AG102SN4D murata electronics	26021	1: $6.732	-	Tape & Reel, Cut Tape	1 KOhm	25 %	50 mA	450 mOhm	1.8 mm	1 mm	1206	Chip Bead Array	Ferrite	Ferrite Chip Bead Arrays	49 Days	Ferrite Beads	4000	Lead free / RoHS Compliant	Differential Mode - 4 Line Array	100MHz	0.45Ohm	1 kOhm @ 100MHz	1.6mm	Paper Tape and Reel	0.039" (1.00mm)	SMD	3.2 mm	0.126" L x 0.063" W (3.20mm x 1.60mm)	SMD/SMT	- 55 C to + 125 C	EMI Filter Beads, Chips & Arrays	Compliant	BLA3216A102SG4T1	4000	4000	1206	3.2mm	NO	RoHS-conform	50mA	Ferrite	-55°C	-	490-1002-1	No	Not Required	Not Required uH	50 mA	Not Required mm	FEC1000R1206	Not Required	12 weeks	EMI Suppression, General Electronics	-	-	-	-	-	-	-	-	-	-	-	-
6 BLA31BD121SN4D murata electronics	22924	1: $6.392	-	Tape & Reel	120 Ohm	25 %	150 mA	300 mOhm	1.8 mm	1 mm	1206	Chip Bead Array	Ferrite	Ferrite Chip Bead Arrays	49 Days	Ferrite Beads	4000	Lead free / RoHS Compliant	Differential Mode - 4 Line Array	100 MHz	300 mOhm Max	120 Ohm @ 100MHz	1.6 mm	Paper Tape and Reel	0.039" (1.00mm)	Surface Mount	3.4	0.126" L x 0.063" W (3.20mm x 1.60mm)	SMD/SMT	- 55 C to + 125 C	EMI Filter Beads, Chips & Arrays	Compliant	BLA3216B121SD4T1	4000	4000	1206	3.2mm	NO	RoHS-conform	150 mA	铁氧体	-	BLA31BD	490-1003-1	-	-	-	-	-	-	-	-	-	电磁干扰抑制	120Ω	-	-	-	-	-	-	-	-	-	-
7 BLA31AG601SN4D murata electronics	13159	1: $6.392	-	Cut Tape	600 Ohm	25 %	100 mA	350 mOhm	1.8 mm	1 mm	1206	Chip Bead Array	Ferrite	Ferrite Chip Bead Arrays	49 Days	Ferrite Beads	4000	Lead free / RoHS Compliant	Differential Mode - 4 Line Array	100MHz	0.35Ohm	600 Ohm @ 100MHz	1.6mm	Paper Tape and Reel	0.039" (1.00mm)	SMD	3.2 mm	0.126" L x 0.063" W (3.20mm x 1.60mm)	SMD/SMT	- 55 C to + 125 C	EMI Filter Beads, Chips & Arrays	Compliant	BLA3216A601SG4T1	4000	4000	1206	3.2mm	NO	RoHS-conform	100mA	Ferrite	-55°C	-	490-1001-1	No	Not Required	Not Required uH	100 mA	Not Required mm	FEC600R1206	Not Required	12 weeks	EMI Suppression, General Electronics	-	-	-	-	-	-	-	-	-	-	-	-
3 BLA31AG300SN4D murata electronics	10	1: $2.8517	-	Tape & Reel	30 Ohm	25 %	200 mA	100 mOhm	1.8 mm	1 mm	1206	Chip Bead Array	Ferrite	Ferrite Chip Bead Arrays	49 Days	Ferrite Beads	4000	Lead free / RoHS Compliant	Differential Mode - 4 Line Array	100MHz	0.10Ohm	30 Ohm @ 100MHz	1.6mm	Paper Tape and Reel	0.039" (1.00mm)	SMD	3.4	0.126" L x 0.063" W (3.20mm x 1.60mm)	SMD/SMT	- 55 C to + 125 C	EMI Filter Beads, Chips & Arrays	Compliant	BLA3216A300SG4T1	4000	4000	1206	3.2mm	NO	RoHS-conform	200mA	-	-55°C	:BLA31A	-	-	-	-	-	-	FEC30R1206	-	12 weeks	-	-	-	0.018gr	-	:No SVHC (20-Jun-2013)	85045020	:200mA	:0.1ohm	:SMD	-	:0.1ohm	-
BLA31BD102SN4D/BKN murata electronics	10	1: $4.6172	-	Cut Tape	1 KOhm	25 %	50 mA	550 mOhm	1.8 mm	1 mm	1206	Chip Bead Array	Ferrite	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
7 BLA31BD601SN4D murata electronics	41904	1: $6.392	-	Cut Tape, Tape & Reel	600 Ohm	25 %	100 mA	450 mOhm	1.8 mm	1 mm	1206	Chip Bead Array	Ferrite	Ferrite Chip Bead Arrays	49 Days	Ferrite Beads	4000	Lead free / RoHS Compliant	Differential Mode - 4 Line Array	100MHz	0.7Ohm	600 Ohm @ 100MHz	1.6mm	Paper Tape and Reel	0.039" (1.00mm)	SMD	3.2 mm	0.126" L x 0.063" W (3.20mm x 1.60mm)	SMD/SMT	- 55 C to + 125 C	EMI Filter Beads, Chips & Arrays	Compliant	BLA3216B601SD4T1	4000	4000	1206	3.2mm	NO	RoHS-conform	50mA	Ferrite	-55°C	-	490-1004-1	No	Not Required	Not Required uH	100 mA	Not Required mm	FEC600R1206	Not Required	12 weeks	EMI Suppression, General Electronics	-	-	-	Compliant	-	-	-	-	-	-	-	-
8 BLA31AG121SN4D murata electronics	16023	1: $6.392	-	Tape & Reel	120 Ohm	25 %	150 mA	200 mOhm	1.8 mm	1 mm	1206	Chip Bead Array	Ferrite	Ferrite Chip Bead Arrays	49 Days	Ferrite Beads	4000	Lead free / RoHS Compliant	Differential Mode - 4 Line Array	100 MHz	200 mOhm Max	120 Ohm @ 100MHz	1.6 mm	Paper Tape and Reel	0.039" (1.00mm)	Surface Mount	3.4 mm	0.126" L x 0.063" W (3.20mm x 1.60mm)	SMD/SMT	- 55 C to + 125 C	EMI Filter Beads, Chips & Arrays	Compliant	BLA3216A121SG4T1	4000	4000	1206	3.2mm	NO	RoHS-conform	150 mA	Ferrite	125 °C	EMIFIL®, BLA31A	490-1000-1	No	Not Required	Not Required uH	150 mA	Not Required mm	-	Not Required	-	EMI Suppression, General Electronics	电磁干扰抑制，通用电子	-	-	Compliant	-	-	-	-	-	-	-	-
BLA31BD601SN4D/BKN murata electronics	10	1: $4.6172	-	Cut Tape	600 Ohm	25 %	100 mA	450 mOhm	1.8 mm	1 mm	1206	Chip Bead Array	Ferrite	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
3 BLA31BD221SN4D murata electronics	10	1: $2.8936	-	Tape & Reel	220 Ohm	25 %	150 mA	350 mOhm	1.8 mm	1 mm	1206	Chip Bead Array	Ferrite	Ferrite Chip Bead Arrays	49 Days	Ferrite Beads	4000	Lead free / RoHS Compliant	Differential Mode - 4 Line Array	100 MHz	350 mOhm Max	220 Ohm @ 100MHz	1.6 mm	Paper Tape and Reel	0.039" (1.00mm)	Surface Mount	3.2 mm	0.126" L x 0.063" W (3.20mm x 1.60mm)	SMD/SMT	- 55 C to + 125 C	EMI Filter Beads, Chips & Arrays	-	BLA3216B221SD4T1	-	-	1206	-	-	-	-	-	-	:MURATA - BLA31B Series	-	No	Not Required	Not Required uH	150 mA	Not Required mm	-	Not Required	-	-	-	-	0.00001	Compliant	:No SVHC (20-Jun-2013)	85045020	:150mA	:0.35ohm	:SMD	-	-	:MURATA - BLA31B Series
2 BLA31BD102SN4D Murata Electronics	7964	1: $6.392	-	4,000	1000Ohm	25%	50mA	550 mOhms	1.8	0.8mm	1206	Chip Bead Array	-	Ferrite Chip Bead Arrays	49 Days	Ferrite Beads	4000	Lead free / RoHS Compliant	Differential Mode - 4 Line Array	100MHz	0.7Ohm	1 kOhm @ 100MHz	1.6mm	Paper Tape and Reel	0.039" (1.00mm)	SMD	3.4	0.126" L x 0.063" W (3.20mm x 1.60mm)	SMD/SMT	- 55 C to + 125 C	-	Compliant	-	4000	4000	1206	3.2mm	NO	RoHS-conform	50mA	-	-55°C	-	-	-	-	-	-	-	FEC1000R1206	-	12 weeks	-	-	-	0.018gr	-	-	-	-	-	-	-	-	-
3 BLA31BD471SN4D murata electronics	50	1: $1.1325	-	Tape & Reel	470 Ohm	25 %	100 mA	400 mOhm	1.8 mm	1 mm	1206	Chip Bead Array	Ferrite	Ferrite Chip Bead Arrays	49 Days	Ferrite Beads	4000	Lead free / RoHS Compliant	Differential Mode - 4 Line Array	100 MHz	400 mOhm Max	470 Ohm @ 100MHz	1.6 mm	Paper Tape and Reel	0.039" (1.00mm)	Surface Mount	3.4	0.126" L x 0.063" W (3.20mm x 1.60mm)	SMD/SMT	- 55 C to + 125 C	EMI Filter Beads, Chips & Arrays	Compliant	BLA3216B471SD4T1	4000	4000	-	3.2mm	-	-	-	铁氧体	-	BLA31B	-	-	-	-	-	-	-	-	-	-	通用	470Ω	-	-	-	-	-	-	-	Y	-	-
2 BLA31AG221SN4D murata electronics	11999	4000: $2.9512	-	Tape & Reel	220 Ohm	25 %	150 mA	250 mOhm	1.8 mm	1 mm	1206	Chip Bead Array	Ferrite	Ferrite Chip Bead Arrays	49 Days	Ferrite Beads	4000	Lead free / RoHS Compliant	Differential Mode - 4 Line Array	100 MHz	250 mOhm Max	220 Ohm @ 100MHz	1.6 mm	Paper Tape and Reel	0.039" (1.00mm)	Surface Mount	3.4	0.126" L x 0.063" W (3.20mm x 1.60mm)	SMD/SMT	- 55 C to + 125 C	EMI Filter Beads, Chips & Arrays	Compliant	BLA3216A221SG4T1	-	-	1206	3.2mm	NO	RoHS-conform	150 mA	铁氧体	-55 °C	BLA31A	-	-	-	-	-	-	-	-	-	-	通用	220Ω	-	-	-	-	-	-	-	Y	-	-

cigen-BLA31

Series Images (14)

Documents & Media

Frequently Asked Questions

BLA31 inductor surface mount - Part List

DC Resistance (DCR)

Resistance - Initial (Ri) (Min)

Industry Aliases

Impedance

Impedance @ Frequency

Series

Standard Package

Current Rating (Max)

Other Names

Current - Output

Length - Overall

Current - DC Forward (If) (Max)

Matchcode

Temperature - Test

B25/100

Applications

Tolerance

Test Frequency

Depth

Width

Height

Mounting Type

Material

Current Rating - DC

DC Resistance (DCR) (Max)

Weight