SMD Beads
General, Product and Type Specification
4.0 CHIP BEADS FOR
INTERFERENCE SUPPRESSION
Ferroxcube ferrite beads are well
known to suppress unwanted interfe-
rence.They are supplied as:
• Suppression bead for shifting on a
wire
• Bead-on-wire for through-hole
mounting on a PCB
In response to market demands for
smaller lighter and more integrated
electronic devices FERROXCUBE
added a series of SMD-type chip beads
to the bead families. The ferrite chip
bead EMI-suppressor provide a power-
ful means of EMI / RFI attenuation for
electronic equipment. Four compact
sizes are standardized and available in
suppression material grades 3S1, 4S2,
4S3, 3S5 and 4S60 according to impe-
dance/frequency requirements at each
application.
4.2 PRODUCT SPECIFICATION
4.2.1 GENERAL SPECIFICATION
Chip beads are available in four stan-
dard sizes and five suppression material
grades. A chip bead is made of a ferrite
tube with a rectangular cross section
and a fead through flat tinned copper
wire, which is bending around the edges
and forms the terminals of the compo-
nent. This design offers many superior
mechanical and electrical features.
FEATURES:
• Low magnetic leak inductance due to
magnetic closed circuit
• Resistant to mechanical shocks and
pressure
• Excellent solder ability (reflow solde-
ring, flow soldering, iron soldering)
• Terminals are highly resistant to pull
forces
• Low tolerances of mechanical dimen-
sions enable automatic mounting
APPLICATIONS:
APPLICABLE MATERIALS:
•
•
•
•
•
3S5 for frequencies up to 30 MHz
3S1 for frequencies up to 100 MHz
4S60 for frequencies up to 300 MHz
4S2 for frequencies up to 1000 MHz
4S3 for frequencies up to 1200 MHz
TYPE DESCRIPTION:
e.g. BDS3/1.8/5.3-3S1-Z
(1)(2) (3) (4) (5) (6)
(1) Product type
(BDS = Bead for Surface mounting)
(2) Width (in mm)
(3) Height (in mm)
(4) Length (in mm)
(5) Material grade (e.g. 3S1)
(6) -Z lead-free version*
*Note:
Not lead-free old version avai-
lable depending on stock.All new codes
are leadfree (not -Z included on type
description)
ORDERING CODE (12 NC):
4.1 PRODUCT APPLICATION
Chip beads have the sample application
area as beads-on-wire, but in addition
they offer the full advantages of SMD
technology like economical mounting,
high packing density of components,
reliable soldering etc. Applications for
these components can be found in e.g.:
• Office automation equipment
• Electronic data processing equipment
• Telecommunication
• Automotive
• Consumer electronic products
(audio / video)
• Domestic appliances
e.g. 433003036301
• EMI-suppression
• Decoupling
• Damping parasitic oscillations
The first 11 digits of the 12NC are suffi-
cient to order the desired chip bead.The
type description is additional information.
4.2.2 SHAPE AND DIMENSIONS
BDS3/1.8/5.3
BDS3/3/4.6
BDS3/3/8.9
Figure 4. Chip bead dimensions (in millimeters)
BDS4.6/3/8.9
5
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