TECHNICAL Conductive elastomers Knitted wire mesh BULLETIN Conductive coatings, sealants, adhesives Cable shielding products EMI/ESD shielding laminates Shielded vents and windows FCC/VDE and TEMPEST testing LEADER IN EMI SHIELDING INNOVATION, DESIGN, AND TEST TECHNOLOGY 202 TM CHO-FAB and CHO-FOIL Family of EMI Shielding Tapes with Conductive Adhesive TM CHO-FAB tape is a corrosion resistant nickel-plated cloth coated with Chomerics highly conductive pressure-sensitive adhesive. This adhesive contains a uniform dispersion of conductive particles that create a very low electrical resistance through the tape. This feature results in superior shielding performance in a wide variety of environmental conditions. CHO-FAB tape is extremely strong, lightweight and has excellent conformability/wrapability to enhance shielding performance and appearance. Use of corrosion resistant nickel-plated cloth and Chomerics superior metal- particle-filled conductive adhesive technology produces a tape used in a wide variety of EMI shielding and ground- ing applications. CHO-FOIL tapes are an economical EMI shielding solution for a variety of commercial uses. The tapes are available in copper, aluminum, or tinned copper foil backed with Chomerics highly conductive TYPICAL APPLICATIONS Supplies electrical contact to surfaces pressure-sensitive adhesive. The copper that cant be soldered to, such as Provides a low impedance connection version of CHO-FOIL tape meets the conductive plastic or aluminum. between a braided cable shield and requirements of MIL-T-47012 and the the metal connector backshell in EMI shield for cables by wrapping tinned copper foil tape meets MIL-T-10727 the tape around the cable. An overlap molded cables. An effective EMI for corrosion resistance. shielded assembly can be achieved is recommended. CHO-FOIL and CHO-FAB shielding without soldering the tape to the braid tapes are available in standard 36 yard ESD shielding. or backshell. length rolls, and die cut custom configura- Provides corrosion-resistant ground tions*. For applications requiring surface EMI radiation measurement trouble- contact points. conductivity only, copper tape is available shooting, using CHO-FOIL tape to Fabric tape available where weight with a non-conductive adhesive. shield ventilation slots or seam gaps. and flexibility are important such as Provides electrical continuity in seams for wrapping cables. of EMI shielded rooms and electronic enclosures. *Ane mbossedv ersiono fC HO-FOILc oppert apeis a vailablef ora morea ttractives urfacea ppearance. continuedTM CHO-FAB and CHO-FOIL Family of EMI Shielding Tapes With Conductive Adhesive continued APPLICATION NOTESAPPLICATION NOTESAPPLICATION NOTESAPPLICATION NOTESAPPLICATION NOTES 1. To ensure maximum adhesion, remove all surface oils and dust from the areas to be taped. 2. When applying the tape, note that oils from the hand can affect adhesion. 3. These tapes are compatible with industry standard tape dispensers. Technical Data PROPERTY TEST METHOD TYPICAL VALUES Part Number Prefix CCH CCE CCJ CCK CCD CAD CFT 1 oz. 1 oz. embossed Aluminum 1 oz. Tin- 1 oz. Aluminum Nickel Plated Fabric/Foil Type RA Copper RA Copper Plated Copper RA Copper Cloth Fabric/Foil Thickness, 1.4 (.036) 1.4 (.036) 2 (.051) 1.6 (.041) 1.4 (.036) 2 (.051) 5 (.127) mils (mm) Adhesive Type Particle Filled Acrylic Pressure Sensitive Adhesive Thickness, 2 sides: 1.5 (.038) 1.5 (.038) mils (mm) 1.5 each (.038 each) Total Thickness, 2.9 (.074) 4 (.110) 3.5 (.089) 3.1 (.079) 4.4 (.112) 5 (.127) 6.5 (1.651) mils (mm) Temperature Range, 40 to 400 40 to 180 F (C) (40 to 205) (40 to 82) Electrical Resistance, MIL-STD-202C <.003 (.0004) <.003 (.0004) <.010 (.002) <.003 (.0004) <.010 (.002) <.010 (.002) <.100 (.020) 2 2 ohms/in (ohms/cm ) Flame Resistance UL Subject 510 PASS MEETS PASS PASS MEETS MEETS N/A Adhesion to Aluminum ASTM D1000 >40 2.5 (438) oz./inch ppi (N/m) ORDERING INFORMATION Standard rolls can be ordered through Chomerics authorized distributors using these part numbers: CCH 36 101 ZZZZ Copper foil, conductive adhesive CCE 36 101 ZZZZ Copper foil, conductive adhesive, embossed CCH 36 301 ZZZZ Copper foil, non-conductive adhesive CCJ 36 201 ZZZZ Aluminum foil, conductive adhesive CCK 36 101 ZZZZ Tin plated copper foil, conductive adhesive CCD 36 101 ZZZZ Copper foil, conductive adhesive 2 sides CAD 36 101 ZZZZ Aluminum foil, conductive adhesive 2 sides CFT 36 101 ZZZZ Nickel-plated fabric, conductive adhesive ZZZZ = WIDTH 0050010001500200030004000600080012002400 0.5 in. 1.0 in. 1.5 in. 2.0 in. 3.0 in. 4.0 in. 6.0 in. 8.0 in. 12 in. 24 in. 12.7mm 25.4mm 38.1mm 50.8mm 76.2mm 102mm 152mm 203mm 305mm 610mm (Other widths available up to 24 in. 61 cm ) Please consult Chomerics Applications Engineering Department for assistance with a custom application involving a need for material in other than slit roll form. Tel: Tel: Tel: Tel: Tel: 781-935-4850 Fax: 781-935-4850 Fax: 781-935-4850 Fax: 781-935-4850 Fax: 781-935-4850 Fax: 781-933-4318781-933-4318781-933-4318781-933-4318781-933-4318