EMI Shielding Engineering Handbook EMI Shielding - INSCO Group

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Cost-Effective Solutions for Major Applications Wireless Handset Shielding and Grounding 2 Plastic/conductive elastomer spacer gaskets, pg.14 Conductive plastic/ elastomer covers, pg.12 Metal/conductive elastomer covers, pg.12 Conductive gounding tabs, pg.154 US Headquarters TEL +(1) 781-935-4850 FAX +(1) 781-933-4318 • www.chomerics.com Europe TEL +(44) 1628 404000 FAX +(44) 1628 404090 Asia Pacific TEL +(852) 2 428 8008 FAX +(852) 2 423 8253 South America TEL +(55) 11 3917 1099 FAX +(55) 11 3917 0817 Form-in-place conductive elastomers, pg.18 Conductive coatings, pg.140 Outdoor Enclosure Shielding BASE STATIONS Extruded conductive elastomers, pg.35 CATV BOXES EMI shielded vents, pg.158 Co-extruded conductive elastomers, pg.55 Foil tape with peel-off paint mask, pg.144 US Headquarters TEL +(1) 781-935-4850 FAX +(1) 781-933-4318 • www.chomerics.com Europe TEL +(44) 1628 404000 FAX +(44) 1628 404090 Asia Pacific TEL +(852) 2 428 8008 FAX +(852) 2 423 8253 South America TEL +(55) 11 3917 1099 FAX +(55) 11 3917 0817 Extruded conductive elastomers, pg.35 Corrosion-resistant conductive elastomers, pg.32 EMI shielded windows, pg.169 Knitted wire mesh gaskets, pg.105 3
Cost-Effective Solutions for Major Applications continued Indoor Cabinet Shielding 4 Conductive wrap over foam backplane gasket, pg.98 Shielded vents with intumesent coating, pg.159 Foil tape with peel-off paint mask, pg.144 US Headquarters TEL +(1) 781-935-4850 FAX +(1) 781-933-4318 • www.chomerics.com Europe TEL +(44) 1628 404000 FAX +(44) 1628 404090 Asia Pacific TEL +(852) 2 428 8008 FAX +(852) 2 423 8253 South America TEL +(55) 11 3917 1099 FAX +(55) 11 3917 0817 Form-in-place conductive elastomers, pg.18 Conductive plastic/ elastomer covers pg.12 Be-Cu fingerstock, pg.126 Conductive fabric over foam gaskets, pg.93 Contact Chomerics’ Applications Engineering Department for assistance in selecting cost-effective solutions for EMI shielding, grounding and isolation in your application. Avionics Naval and Aerospace Electronics Information Technology Shielding and Grounding EMI shielded vents, pg.157 Foil/film laminates card cage shield, pg.150 Foil over foam connector gaskets, pg.98 Conductive fabric over foam grounding pads, pg.154 Cable shielding ferrites, pg.176 Military Electronics Foil/film laminates, pg.150 Automotive Electronics Conductive coatings, pg.140 US Headquarters TEL +(1) 781-935-4850 FAX +(1) 781-933-4318 • www.chomerics.com Europe TEL +(44) 1628 404000 FAX +(44) 1628 404090 Asia Pacific TEL +(852) 2 428 8008 FAX +(852) 2 423 8253 South America TEL +(55) 11 3917 1099 FAX +(55) 11 3917 0817 Conductive die attach adhesives, pg.135 Foil/film laminate display shields, pg.150 Foil over foam grounding pad pg.98 Medical Electronics Molded-in-place conductive elastomers, pg.77 5
Page 1 and 2: Chomerics is the world’s largest
Page 3: Contents COST-EFFECTIVE SOLUTIONS F
Page 7 and 8: As Lead Supplier, Chomerics... Prov
Page 9 and 10: Shielding Solutions for Wireless Co
Page 11 and 12: SHIELDING SOLUTIONS FOR WIRELESS CO
Page 13 and 14: Table 2 Table 1 *Copies of CHO-TM-T
Page 15 and 16: stable platform for direct, high pr
Page 17 and 18: SHIELDING SOLUTIONS FOR WIRELESS CO
Page 19 and 20: gaskets will typically save 60% or
Page 21 and 22: Table 1 TYPICAL PROPERTIES OF CHO-F
Page 23 and 24: Optimizing the design of Cho-Form S
Page 25 and 26: Optimizing the design of Cho-Form S
Page 27 and 28: Conductive Elastomer Gaskets SECTIO
Page 29 and 30: Material Selection Chomerics’ arr
Page 31 and 32: Table 2 continued ELASTOMERS FOR TY
Page 33 and 34: Table 3 continued survivability bey
Page 35 and 36: Conductive Elastomer Extrusions...
Page 37 and 38: Bonded gaskets — Similar and diss
Page 39 and 40: Table 2 EXTRUSION MANUFACTURING GUI
Page 41 and 42: Standard Extrusion Sizes Table 7 ,,
Page 43 and 44: Table 8 continued HOLLOW O-STRIPS C
Page 45 and 46: Table 11 continued Chomerics P/N* M
Page 47 and 48: Table 15 A Chomerics P/N MIL P/N: M
Page 49 and 50: 19-09-12023-XXXX 19-08-12057-XXXX 1
Page 51 and 52: 19-09-15245-XXXX 19-09-15486-XXXX 1
Page 53 and 54: 19-05-E328-XXXX 19-08-F676-XXXX 19-
Page 55 and 56:
CONDUCTIVE ELASTOMERS Co-Extruded S
Page 57 and 58:
19-18-15351-XXXX 19-18-M391-XXXX 19
Page 59 and 60:
Table 2 STANDARD SHEET STOCK SIZE A
Page 61 and 62:
CONDUCTIVE ELASTOMERS Molded Shapes
Page 63 and 64:
CONDUCTIVE ELASTOMERS Molded D- and
Page 65 and 66:
Table 3 continued Table 3 continued
Page 67 and 68:
CONDUCTIVE ELASTOMERS Waveguide Gas
Page 69 and 70:
Table 2 continued Frequency Range (
Page 71 and 72:
Table 4 Note: Raised portion will b
Page 73 and 74:
temperatures to 125°C, and CHO-SEA
Page 75 and 76:
Jam Nut EMI Seals MIL-C-38999, MIL-
Page 77 and 78:
CONDUCTIVE ELASTOMERS Molded-In-Pla
Page 79 and 80:
Table 1 * Where two values are show
Page 81 and 82:
Load, lb./inch Load, lb./inch 30 20
Page 83 and 84:
Stress Relaxation As important as C
Page 85 and 86:
Heat Aging The primary aging mechan
Page 87 and 88:
CONDUCTIVE ELASTOMERS Part Number I
Page 89 and 90:
19-06-11223-XXXX . . . . . . .Hollo
Page 91 and 92:
SOFT-SHIELD® Low Closure Force, Fo
Page 93 and 94:
LOW CLOSURE FORCE, FOAM CORE EMI GA
Page 95 and 96:
Table 3 ORDERING INFORMATION Referr
Page 97 and 98:
Table 6 74046 APPROX. ACTUAL SIZE R
Page 99 and 100:
Table 1 Material 4000 4002 4004 400
Page 101 and 102:
Page 103 and 104:
Page 105 and 106:
Metal EMI Gaskets, Clip-on Gaskets
Page 107 and 108:
METAL EMI GASKETS MESH STRIP MESH
Page 109 and 110:
METAL EMI GASKETS MESH STRIP MESH
Page 111 and 112:
METAL EMI GASKETS SPRINGMESH ® SPR
Page 113 and 114:
Fabricated COMBO GASKETS: Select th
Page 115 and 116:
METAL EMI GASKETS SHIELDMESH SHIEL
Page 117 and 118:
Table 2 SINGLE EMI/EMP FRAME GASKET
Page 119 and 120:
Table 2 POLASHEET COMPOSITE GASKETI
Page 121 and 122:
METAL EMI GASKETS METALASTIC ® MET
Page 123 and 124:
METAL EMI GASKETS METALKLIP ® META
Page 125 and 126:
SHIELDING EFFECTIVENESS Figures 8-1
Page 127 and 128:
PITCH 0.095 (2.41) PITCH 0.165 (4.1
Page 129 and 130:
PITCH PITCH 0.187 (4.75) PITCH 0.25
Page 131 and 132:
METAL EMI GASKETS SPRING-LINE ® Ta
Page 133 and 134:
Conductive Compounds Adhesives Seal
Page 135 and 136:
CONDUCTIVE COMPOUNDS CHO-BOND ® Co
Page 137 and 138:
Table 1 continued SPECIFICATIONS AN
Page 139 and 140:
Silicones and Flexible Polyisobutyl
Page 141 and 142:
• CHO-SHIELD 4900 silver-filled a
Page 143 and 144:
Engineered Laminates & Grounding Pr
Page 145 and 146:
Ordering Procedure CHO-MASK II tape
Page 147 and 148:
Table 1 Property Test Method Typica
Page 149 and 150:
LAMINATES & GROUNDING PRODUCTS EMI
Page 151 and 152:
Table 1 SPECIFICATIONS Property Tes
Page 153 and 154:
LAMINATES & GROUNDING PRODUCTS CHO-
Page 155 and 156:
SPRING-LINE ® “Pick and Stick”
Page 157 and 158:
EMI Shielded Vents SECTION CONTENTS
Page 159 and 160:
Customization Options • Alternati
Page 161 and 162:
EMI SHIELDED VENTS CHO-CELL Shield
Page 163 and 164:
Round SHIELD CELL and OMNI CELL Pan
Page 165 and 166:
EMI SHIELDED VENTS SLIMVENT Shield
Page 167 and 168:
EMI SHIELDED VENTS Common Parts Tab
Page 169 and 170:
EMI Shielded Windows & Contrast Enh
Page 171 and 172:
Figure 2 Shielding Effectiveness fo
Page 173 and 174:
Insertion Loss (dB) WIN-SHIELD Wind
Page 175 and 176:
Cable Shielding SECTION CONTENTS PA
Page 177 and 178:
BEADS ON LEADS Impedance-Frequency
Page 179 and 180:
Table 5 continued Dimensions - Inch
Page 181 and 182:
FLAT SPLIT CABLE CORE Impedance-Fre
Page 183 and 184:
CABLE SHIELDING CHO-DROP ® EMI Abs
Page 185 and 186:
Table 2 STRAIGHT LENGTHS inch (mm)
Page 187 and 188:
Connector Boots and Cable Transitio
Page 189 and 190:
CABLE SHIELDING CHO-JAC ® Flat Cab
Page 191 and 192:
EMI Shielding Theory & Gasket Desig
Page 193 and 194:
E i Current on front wall due to re
Page 195 and 196:
Figure 6 Absorption Loss Nomograph
Page 197 and 198:
,, ,,, ,, ,,, ,, ,,, ,, ,,, G G G E
Page 199 and 200:
Table II Group Material Groupings*
Page 201 and 202:
Non-Conductive Sealing Gasket Volum
Page 203 and 204:
enclosure, or by using an insert si
Page 205 and 206:
Gasket Mounting Choices Our various
Page 207 and 208:
Actual deflection vs. distance betw
Page 209 and 210:
percentage increase required to sat
Page 211 and 212:
Figure 28d Section B-B from Figure
Page 213 and 214:
Formulas (see definition of terms a
Page 215 and 216:
in the unit price of the gasket. Bo
Page 217 and 218:
Wire Mesh EMI Gasket Selection Guid
Page 219 and 220:
Relative Conductivity: Conductivity
Page 221 and 222:
Global Compliance Testing Page 222
Page 223 and 224:
FCC, CSA, CISPR, VCCI, AUSTEL, EN T
Page 225:
THERM-A-GAP TM Thermally Conductive
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EMI Shielding Engineering Handbook EMI Shielding - INSCO Group

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