PolyIron™ Microwave Absorber

S R C H AV E R H I L L
P O LY I R O N ™
M I C R O WAV E A B S O R B E R
winchesterelectronics.com
Applications
for PolyIron™
Microwave Absorber:
S R C H AV E R H I L L
P O LY I R O N ™ M I C R O W A V E A B S O R B E R
EMI RFI Shielding
Optical Transceivers
Integrated Microwave
Assemblies (Covers)
EMC Chambers
Eliminate RFID
Interference
3D PARTS MOLDED OR 2D PARTS DIE
CUT TO YOUR EXACT PRINT
Unlike common Salisbury shields or gaskets, PolyIron™ magram absorber
works to attenuate EMI by absorbing it, not by reflecting it. This is particularly
important in small enclosures, where high frequencies cause cavity resonance—
something shields do not really address. In today’s densely-packed microwave
devices where space is at a premium, PolyIron™ has significant advantages
Absorbing Cavity
Resonance
Waveguide Loads
Vehicle Obstacle
Avoidance Radar
because, typically, .030” to .125” thickness of PolyIron™ is all that is required.
SRC Haverhill’s PolyIron™ consists of a 5 to 1 pure iron oxide powder, mixed
with various catalysts to form a flexible material that is non-conductive. It may
be used effectively even in the most confined of enclosures, such as a handset
or for small spaces surrounding vehicle avoidance radar, or to reduce antenna
side lobe interference.
PolyIron™ was first used for military radar avoidance and stealth applications,
but today PolyIron™ is increasingly used in the RF and Microwave industry
as operating frequencies continue to go up and design options to absorb
Stealth Radar Absorber
and Electronic ‘Silencing’
Antenna Side Lobe
Attenuation
Cell Phone and Handset
RF EMI Suppression
unwanted microwaves and lower surface currents are harder to achieve. The
typical range of frequencies our customers are addressing successfully is
between .5 GHz to 40 GHz.
Common commercial applications are for EMI/Microwave Shielding, eliminating
cavity resonance in handsets, for waveguide loads, or to increase security by
silencing noisy devices. Designs are limited only by your imagination or the
demands of your test, microwave, or military application.
What’s more, the material is easy to work with. In sheet form, PolyIron™ can
be easily cut by hand to fit even the smallest of enclosures. The SRC Haverhill
proprietary binder formulation exhibits low outgassing, is not susceptible to
mold and mildew, and the material can handle demanding temperature and
environmental extremes.
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Winchester Electronics Corporation | SRC Haverhill PolyIron™ Microwave Absorber
S R C H AV E R H I L L C A B L E A S S E M B L I E S
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S ISC, RPOHW
AA
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AABBSLOER B
R I RIGID
POLYIRON™ PART NUMBER
THICKNESS (INCHES)
OVER ALL SHEET DIMENSION (INCHES)
SRC-030
.030
8.8 x 8.5
SRC-040
.040
14 x 6.5
SRC-050
.050
14 x 6.5
SRC-060
.060
14 x 6.5
SRC-075
.075
14 x 6.5
SRC-087
.087
14 x 6.5
SRC-100
.100
14 x 6.5
SRC-125
.125
14 x 6.5
ROHS STATUS
Lead (Pb) Content
Pass
Cadmium (Cd) Content
Pass
Hexavalent Chromium (Cr6) Content
Pass
Mercury (Hg) Content
Pass
Bromine Compounds
Pass
MILITARY SPECIFICATIONS
AND STANDARDS
IEEE-STD-1128
Free Space Method & Broadband Reflectivity (ARCH)
IEEE-STD-1129
Resonant Cavity Test
ASTM D5470
Thermal Conductivity
MIL-STD-285
Attenuation Measurements for Enclosures
VOLUME RESISTIVIT Y
DESC 92017
<1.5 Ohm-cm (0.25 mm thick)
MIL-G-83528
3.45 MPa (500 psi) Load
SHIELDING EFFECTIVENESS
DESC 92017
Free Space Method & Broadband Reflectivity (ARCH)
MIL-G-83528
"E" Field - 100 dB 200 MHz to 18 GHz
PERMITTIVIT Y
Electrical
Magnetic
POLYIRON™ PART NUMBER
E'
e"
Loss Tangent
u'
u"
Loss Tangent
SRC-030
13.69
.337
.025
1.69
.502
.297
SRC-100
16
1.085
.068
1.76
.604
.343
SRC-040
13.56
.391
.029
1.66
.466
.281
SRC-050
14.06
.514
.037
1.66
.461
.278
SRC-087
15.77
.91
.058
1.7
.55
.322
SRC-060
14.18
.553
.039
1.69
.479
.284
SRC-075
17.08
.929
.054
1.75
.58
.332
SRC-125
15.43
1.25
.081
1.71
.577
.337
Inquiries: [email protected] ◆ 707-791-1982
www.winchesterelectronics.com
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S R C H AV E R H I L L C A B L E A S S E M B L I E S
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AABBSLOER B
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1-18 GHz
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BROADBAND REFLECTIVITY
Winchester Electronics Corporation | SRC Haverhill PolyIron™ Microwave Absorber
S R C H AV E R H I L L C A B L E A S S E M B L I E S
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S ISC, RPOHW
AA
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OCLYLI O
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AABBSLOER B
R I RIGID
18-26.5 GHz
Inquiries: [email protected] ◆ 707-791-1982
BROADBAND REFLECTIVITY
www.winchesterelectronics.com
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S R C H AV E R H I L L C A B L E A S S E M B L I E S
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S ISC, RPOHW
AA
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AABBSLOER B
R I RIGID
POLYIRON™ RELATIVE PERMITTIVITY
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Winchester Electronics Corporation | SRC Haverhill PolyIron™ Microwave Absorber
S R C H AV E R H I L L C A B L E A S S E M B L I E S
S
S ISC, RPOHW
AA
SV
E ES T
SEM
PR
OCLYLI O
RW
O NL™OM
AABBSLOER B
R I RIGID
APPLICATIONS
Product complexity, device frequency, and component density are increasing across the range of microwave, satellite,
wireless, test equipment, military, and commercial EMI applications. EMI designers and engineers must find effective,
affordable ways to handle unwanted emissions and impedance mis-match. As components grow smaller and more
dense, designers and engineers are faced with dwindling layout options to resolve cross talk, creeping waves, cavity
resonance, or RF antenna coupling problems.
One of the many problems our PolyIron™ custom-fabricated
microwave absorber has solved is for manufacturers of optical
transceivers. With these devices stacked closely to each other on
high-speed routers used in large cloud farm data centers, meeting
stringent FCC regulations was a problem. The PolyIron™ was
molded and cut to the customer’s complex application shapes.
Cross talk was eliminated and the parts met FCC requirements.
For high frequency RF, microwave, radar, and antenna applications
ranging from 100 MHz to 40 GHz, SRC Haverhill PolyIron™
attenuates near field emissions. Applications include isolating
noisy PC board components, shielding sensitive microwave devices from both magnetic and electric interference,
eliminating cavity resonance from enclosures, waveguide loads, reducing antenna side lobes - the list of applications
is continuously growing.
Inquiries: [email protected] ◆ 707-791-1982
www.winchesterelectronics.com
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CONTACT INFORMATION
NORTH AMERICA - United States
Winchester Electronics Middlebury
Division of Winchester Electronics
199 Park Road Extension - Suite 104
Middlebury, Connecticut 06762
203.741.5400 Phone
203.741.5500 Fax
TRU Corporation
Division of Winchester Electronics
245 Lynnfield Street
Peabody, Massachusetts 01960
978.532.0775 Phone
978.531.6993 Fax
NORTH AMERICA - Mexico
Winchester Electronics Nogales
Carretera Int’l Km. 7.5A
Parque Industrial El Cid
Nogales, Sonora, Mexico
203.741.5570 Phone
203.741.5500 Fax
Winchester Electronics Spartanburg
Division of Winchester Electronics
2525 Chesnee Highway
Spartanburg, South Carolina 29307
864.804.5300 Phone
864.804.5301 Fax
Source Technology
Division of Winchester Electronics
700 Gateway Parkway
Marble Falls, Texas 78654
281.894.6171 Phone
281.807.4546 Fax
ASIA - China
Winchester Electronics (Suzhou) Co., LTD
No. 18 QunXing First Street
SIP, Suzhou, P.R. China, 215006
86.512.6252.9838 Phone
86.512.6762.9638 Fax
Clements National Company
Division of Winchester Electronics
2150 Parkes Drive
Broadview, Illinois 60155
708.594.5890 Phone
708.594.2481 Fax
SRI Hermetics
Division of Winchester Electronics
3950 Dow Road
Melbourne, Florida 32934
321.254.4067 Phone
321.752.9221 Fax
SRC Haverhill
Division of Winchester Electronics
5590 Skylane Boulevard
Santa Rosa, California 95403
707.573.1900 Phone
707.573.1999 Fax
SRI Connector Gage
Division of Winchester Electronics
3950 Dow Road
Melbourne, Florida 32934
800.881.9689 Phone
321.259.9681 Fax
ASIA - Malaysia
Winchester Electronics (M) SDN. BHD
No. 1651, Lorong Perusahaan Maju 8
Prai Industrial Estate Phase IV
13600 Prai, Penang, Malaysia
6.04.5083535 Phone
6.04.5080810 Fax
Please contact Customer Service at 1.203.741.5400 or visit us online at www.winchesterelectronics.com for information
about our full line of product offerings.
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