FN660-20-10 Schaffner EMC Inc, FN660-20-10 Datasheet - Page 3

• Manufacturer Part Number: FN660-20-10
• Description: FILTER 2-STAGE GENERAL 20A
• Manufacturer: Schaffner EMC Inc
• Series: FN 660r

Specifications of FN660-20-10

• Filter Type: Power Line
• Voltage - Rated: 250V
• Current: 20A
• Inductance: 480µH
• Mounting Type: Chassis Mount
• Termination Style: Stud Lug
• Current Rating: 20A
• Voltage Rating: 250V
• Leakage Current Max: 190µA
• Capacitance: 0.15µF
• Inductance Min: 480µH
• Termination Type: Screw
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 282-352; 817-1225; FN 660 -20 /10

Powerline filters
- a vital element of today’s electronic designs
In today’s world, more electrical energy is
being generated at increasing levels of
power, and more and more low power
energy is being used for the transmission
and processing of data. The result is vastly
increased ‘electronic smog’ or noise. This
noise can disrupt, and even destroy,
electronic devices: an unacceptable
situation, and shortly an illegal one in
certain markets. The electronics
industry must strive to protect
equipment against such ‘noise’.
Noise, or interference, travels two ways.
Switches - such as semiconductors - can
emit interference, and be susceptible to it.
The same is true for data processing
equipment. The most common method of
protection is the use of powerline filters
coupled with screening or gasketting
materials.
The mains, or powerline, filter is the key
element in eliminating mains-borne
interference. This filter not only has to
meet the requirements of electro-magnetic
compatibility (EMC), but safety aspects as
well. For some applications, the filter also
has to prevent the radiation of classified
information from the mains line (‘Tempest’
applications). Other applications require a
filter to protect equipment from
destructive voltages on the power line, like
those caused by lightning or nuclear
explosion (NEMP).
Schaffner’s breadth of product range, the
high attenuation characteristics of our
filters under various load
conditions, our dedication to
quality - and above all our
organization’s unique
experience in filter design
and manufacturing -
spanning more than 25
years - is your guarantee of
excellence.
Total commitment to
quality
Schaffner’s aim is to provide
our customers with fault-
free products. To achieve
this, 100% of our products
undergo rigorous final
2
testing. To ensure high quality we have
instituted a system which meets all the
stringent requirements of the ISO 9001 /
EN 29001. The phrase ‘Quality Assurance’
is not just a slogan for us; it is applied in
practice, and the Schaffner brand truly
stands for reliability and quality.
Schaffner’s single-phase filter range
provides an off-the-shelf solution for the
vast majority of electronic equipment
noise problems. Our standard product
range is particularly wide, embracing both
chassis-mounting and PCB-mounting
types, allowing users to select an optimal
choice in both performance and cost
efficiency terms.
Chassis-mount types
In general, chassis mount filters provide a
higher performance solution, in metal
cases for optimum connection to earth
and good high frequency performance.
With the space available for up to three
circuit stages for attenuation of noise,
users can usually find an option with the
performance to provide an off the shelf
solution for even the most difficult of EMC
problems (to retrofit an EMC solution to an
existing design for instance). Schaffner
offers chassis-mounting versions for a
very wide range of power levels - from less
than 1A to 55A - covering a majority of
higher power office equipment and low to
medium power industrial applications.
At the lower power levels, users have the
additional choice of opting for a PCB-
mounting version (see following section),
or an IEC inlet type which typically handle
currents of up to 6-10A and are ideal for
small office and industrial equipment. The
associated IEC 950 specification is a key
safety requirement for computer and
office/business equipment, developed to
provide a consistent world standard,
which in turn simplifies the certification
process. The standard specifies
requirements intended to ensure safety
against electrical and fire hazards for the
operator and layman who may come into
contact with the equipment, and where
specifically stated, for service personnel.
IEC 950-compliance is required for
products shipped in Europe, and has
either already become - or is in the
process of becoming - a de-facto standard
in all other world markets. It has been
adopted by European countries under
EN60950, and by the USA under UL 1950.
Two filter families in this catalogue are
available with IEC inlets, one of which is
compliant with IEC 950 (request separate
IEC inlet/IEC 950 catalogue for full details
of Schaffner’s range).
PCB-mount types
PCB filters are designed for compactness
and ease of assembly, and avoid the need
for extra mounting components and
installation operations necessary with
chassis styles, but at the expense of finite
available space for filtering circuitry.
Consequently, they typically offer just a
single stage of attenuation, with limitations
on the maximum power handling
capability (up to 6.5A
current ratings). This
typically makes these filters
ideal for those companies
who have planned for EMC
protection throughout the
equipment design process,
and are completing
equipment protection with
these low cost components.
When designing these
components in, care needs
to be taken to provide a low
impedance connection to
earth, and to minimize the
potential for any noise