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Low Pass Filter Selection Guide
MLFT Filters
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Performance through the GHz range
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Standard and custom mechanical
Filter Installation ............................16
Performance Testing...................17-18
Value Added Filter Assemblies .....100
Military Cross Reference .......237-239
packages available
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Transient voltage & surge protection
available in some packages
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Available in multiple line packages
Motor Line Feed-Thru Technology (MLFT) is
an innovative new line of filters designed to be
a flexible, low cost solution to EMI (RF) noise
issues. This product can be used in a variety of
applications requiring high capacitance at lower
voltages with the option of custom designed,
easy to retro fit mechanical packaging.
MLFT Filters . . . . . . . . . . . . 65
Solder-in Filters
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Small size to allow effective use of space
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Voltage ratings to 750 VDC
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Multiple circuit configurations: C & Pi
standard L circuit also available
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High temperature construction to prevent
reflow during installation
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MIL-F-15733 QPL and MIL-C-11015 (CK99)
filters available
Solder-in filters are ideal for use in critical areas
where space does not allow use of mounting tools
or hardware. The solder-in feature also allows
installation in unison with other board mounted
components. Primarily used in filtering signal/data
lines and AC power lines.
Solder-in Filters
C . . . . . . . . . . . . . . . . . . 66-67
Pi . . . . . . . . . . . . . . . . . 68-69
Miniature Solder-in Filters . . . . 70
Resin Sealed Bolt-in Filters
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Wide range of sizes: 4-40 thread through
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5/16-24 thread
Voltage ratings to 500 VDC/220 VAC
MIL-F-15733 QPL filters available
Multiple circuit configurations: C, L and Pi
Metric Threaded filters available
Spec-Spin and Spec-Mini Press filters
These filters are easily mounted in a tapped hole
or thru-hole with supplied nut and lock-washer.
The rugged case with resin seals at both ends
provides excellent environmental protection.
Primarily used in filtering signal/data lines and DC
power lines. The Spec-Mini Press and Spec Spin
Filters are ideal for use where solder is undesirable.
Each offers easy filter substitution and are for use
in microwave applications and other high frequency
applications.
Spec Mini-Press 9900 Series . . . 71
Spec Spin Filters . . . . . . . . . . 72
Resin Sealed Bolt-in Filters
4-40. . . . . . . . . . . . . . . . 73-75
6-32 . . . . . . . . . . . . . . . . . . 76
6-40 . . . . . . . . . . . . . . . . . . 76
8-32. . . . . . . . . . . . . . . . 77-78
10-32 . . . . . . . . . . . . . . . . . 79
12-28/32 . . . . . . . . . . . . 80-82
5/16-24, 5/16-32 . . . . . . . . 83
High Current/High Voltage Resin Sealed Filters
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Current ratings up to 100 Amps
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Continuous voltage ratings up to
2500 VDC/240 VAC
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U.L. 1459 recognized and CSA C22.2
certified versions available
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Rugged bolt-in style for easy installation
High current filters are ideal for use in high
current 5 volt logic buss, but also can be
used for +/-48 VDC telephone rack buss,
high current switch mode power supplies
and DC charging systems. High voltage
filters find use in high voltage power supplies
and applications requiring U.L. Hi-Pot.
High Voltage Filters
25 Amp . . . . . . . . . . . . . 84-85
UL/CSA Filters
50 Amp . . . . . . . . . . . . . 84-85
100 Amp . . . . . . . . . . . . 84-85
Hermetically Sealed Case Filters
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Popular .375/.410" and .690" case diameters
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Voltage ratings from 50 VDC to 400 VDC/
240 VAC
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Filter configurations available: C, L, Pi, T
and double T
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MIL-F-15733 and MIL-F-28861
QPL filters available
This series of filters features hermetic glass
seals and high EMI filtering performance.
They are excellent for critical applications
that demand high reliability in the toughest
environmental conditions and provide
broadband high performance EMI filtering
from 10 KHz to over 10 GHz.
Case
Dia.
.375
.410
Filter
C. . . . . . . . . . . . . . . . 87
L . . . . . . . . . . . . . 88-92
Pi. . . . . . . . . . . . . 93-94
Transient
Suppression
Pi . . . . . . . . . . . . . . . 94
T . . . . . . . . . . . . . . . . 95
TT. . . . . . . . . . . . . . . 96
C. . . . . . . . . . . . . . . . 97
L . . . . . . . . . . . . . 98-99
Pi . . . . . . . . . . . . . . 100
T . . . . . . . . . . . . . . . 101
.690
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SPECTRUM CONTROL INC.
• 8031 Avonia Rd. • Fairview, PA 16415 • Phone: 814-474-2207 • Fax: 814-474-2208 • Web site: www.spectrumcontrol.com
SPECTRUM CONTROL GmbH
• Hansastrasse 6 • 91126 Schwabach, Germany • Phone: (49)-9122-795-0 • Fax: (49)-9122-795-58
MLFT Filters
Motor Line Feed-Thru Technology (MLFT) is an innovative
new line of filters designed to be a flexible, low cost
solution to EMI (RF) noise issues.
The product was originally developed to solve the filtering
needs of DC motors, allowing them to pass the stringent
standards that govern these motors in various industries
they are used. Although this product was developed with
the DC motors in mind, it can be used in almost any
application that requires high capacitiance at lower
voltages with the option of custom designed, easy
to fit mechanical packaging.
By utilizing our vast experience in designing, testing
products at our on-site lab, and manufacturing integrated
filtering products; we can quickly and economically design
an easy to use solution to any EMC issue.
With easy installation in mind, our feed-thru packages
are designed to be placed at the product’s interface
to the outside world at the low impedance ground —
where filtering is optimized. Thus eliminating the need
for complex PC boards that are required when trying
to incorporate surface mount components and boards
into a system.
C Filter
L-B Filter
Features
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Performance through the GHz range
Standard and custom mechanical packages available
Transient voltage & surge protection available in some
packages
Available in multiple line packages
s
SPECTRUM CONTROL INC.
• 8031 Avonia Rd. • Fairview, PA 16415 • Phone: 814-474-2207 • Fax: 814-474-2208 • Web site: www.spectrumcontrol.com
SPECTRUM CONTROL GmbH
• Hansastrasse 6 • 91126 Schwabach, Germany • Phone: (49)-9122-795-0 • Fax: (49)-9122-795-58
65
Low Pass Filters