Laird Steward_CMC flyer-html.html

Background:

Today’s electronics and electrical
equipment features more functionality
and performs in ever-higher switching
frequencies (KHz to MHz). This demands
higher power consumption and higher
power conversion efficiency. Design
trends also include next generation
semiconductor applications (SiC, GaN).
Designs must be more compact and have
layouts accommodating higher density
components. These factors will make
both EMI and operating temperatures
severe issues. Integrating the right
common mode choke into the system
design has proven to be a cost-effective
solution and helps your device comply
with regulations. We project use of
high-current, broadband common mode
chokes will increase at a steady pace.

Global leader Laird Steward addresses
pain points caused by disruptive EMI
over broadband frequencies.

CM Series

common mode chokes are ideal for
higher power density designs because
they carry higher currents with the
lowest possible rise in temperature. They
support noise suppression over a much
wider frequency band. What are other
benefits? CM Series common mode
chokes are significantly

smaller, more

compact, and lighter.

More About the Laird

Steward Difference:

According to published product
portfolios, common mode chokes
are readily available from a variety of
magnetics suppliers. Each offering
purports to tackle conductive noise
problems (i.e., 100KHz to 30MHz) and
supports high currents up to 100amps.
Some are said to resolve radiation noise
problems (i.e., 30MHz to 1GHz) but
support low- to mid-current applications
up to 20amps only. Carefully evaluating
these,

highly-experienced Laird Steward

engineers have concluded there are few
good choices among common mode
choke product offerings

which can

serve the joint needs of both broadband
noise suppression (30MHz to 1GHz)

and

high-current (>20amps) applications,
especially when design trends are
making dual usage imperative.

Laird Steward CM series high-current
common chokes are designed to provide
the highest possible impedance over
broadband frequencies while supporting
application current up to 90amps
(>90amps solutions are underdeveloped
by Laird Steward currently). All are
well suited for present day and future
applications.

Laird Steward

Product Part

Number

Outline

Size

Rated

Current

SRF in

Differential

Mode

Differential

Mode

Impedance Peak

SRF in

Common Mode

Impedance Peak

(mm)

(Amps)

(MHz)

(

)

(MHz)

(

)

CM2545X171R-10

6.3x11x9

600

300

180

CM2021Y330R-10

5x5.6x2.8

1500

180

750

CM3440Z171B-10

8.5x10x11

700

480

250

170

CM5441Z161B-10

13.7x10.5x15

270

550

150

160

CM5441Z101B-10

14x10x10.5

450

420

300

110

CM8663Z161B-10

22x16x16.5

300

580

250

175

CM Series High-Current Common Mode Choke Product Specifications*:

Special Note:

Typical impedance over a broad

range of frequency (10MHz

to 2GHz). For reference only,

non-binding to any specific P/N

above, please contact your local

Sales and FAE for more technical

information on specific P/N.

* All of the data above are typical.

CM Series Features:

• Made with NiZn ferrite materials with

superior impedance over a broad
range frequency from 10MHz to 2GHz.
CM Series is your ideal solution for
radiation noise problems.

• MnZn ferrite version is also available

upon request to tackle KHz to MHz
low-frequency problems known as
conductive noise problems.

• Support application current from

10A up to 90A+.

• Low DCR.
• High surface resistivity >5G OHMs

(NiZn version only).

• Robust construction and high

reliability. Customized designs
available upon request.

• Automotive grade with AECQ200

compliance is available upon request.

•  Support both SMT or THT.
•  Small pin pitch and compact in size.
•  Temperature rise <40°C at rated current.
•  RoHS, HF and Reach compliant.

Advantages:

• Laird Steward’s unique, superior

material composition results in 20%
higher impedance than other products
of a given identical, or a 20% smaller
size (or lighter) of a given same
impedance performance.

• Superior consistency of performance

from lot to lot.

• Smaller pin pitch and smaller in size

to save board layout space by up to
20% due to higher surface resistivity
(G OHMs level) than other general
solutions found in the market.

• Superior high current handling

capabilities with less heat generation
and improved electronic system
power efficiency.

• Semi-automated or highly automated

production is available because
the entire CM Series features a
manufacturing-friendly construction.

• High reliability with AECQ200

compliance.

What is the benefit to our

customers, bottom line?

Laird Steward CM Series common
mode chokes effectively address and
resolve customer pain points involving
radiated noise problems due to higher
switching frequencies and higher
power applications.

You reduce total

EMC trouble-shooting

costs during

your early design cycle. Our common
mode chokes feature consistency of
performance. Their high quality will
result in less annual validation costs
for customers after mass production.

Additionally, our common

mode chokes are:

• Easy to install. You lower the

number of “assembly fails” from a
manufacturing perspective and lower
your total cost ownership.

• Effective in enhancing system level

power efficiency particularly for high
power applications.

• Enable more compact electronic designs

and/or more multi-functional designs
and/or higher performance designs.

• Highly regarded for securing the

supply chain with good agility and
flexibility in production scale up and
competitive lead time.

• Renowned for reliability, reducing

risk of failure/recalls (e.g., automotive
applications).

Compelling Applications:

• Ideal for DCDC common mode noise

suppression for DCDC high power
lines (rated 10A to 90A+), ideal for
device power from hundreds to
thousands of watts.

• DCDC power lines featuring the latest

semiconductor technologies (SiC, GaN),
which operate with hundreds of KHz up
to MHz switching frequency.

• Other DCDC power lines for general

telecom/datacom/industrial/
automotive uses.