23-50200

A. WIRE MESH EMI Shielding Tape THIN STRIP OF WIRE MESH U.S. Customary [SI Metric] GENERAL DESCRIPTION EMC SHIELDING TAPE is a double layered strip of knitted wire mesh providing effective EMI shielding for electrical and electronic cable assemblies. The knitted construction of EMI SHIELDING TAPE maximizes conformability and flexibility while minimizing bulk and weight. Standard EMC SHIELDING TAPE uses Sn/Cu/Fe knitted wire to provide greater physical strength and shielding effectiveness than may be achieved with other tape materials. TIN COATING 3% by weight offering low impedance contact and maximum corrosion resistance. COPPER CLADDING 40% by weight offering maximum conductivity. STEEL CORE 57% by weight offing maximum strength and permeability. Figure 1. Cross section of Sn/Cu/Fe wire. SPECIFICATIONS MATERIAL DESCRIPTION APPLICATION INFORMATION TECKNIT EMC SHIELDING TAPE is recommended for EMI shielding, grounding, and static discharge applications. It is particularly effective as a primary or supplementary shield for electronic cables and cable assemblies. The flexibility of EMC SHIELDING TAPE permits it to conform to irregular surfaces. EMC SHIELDING TAPE is useful in a broad range of temperatures and environments. Wire Mesh*: Sn/Cu/Fe, (tin coated copper clad steel see Figure 1) .0045 ± .0005 in. [0.114 ± 0.012mm] diameter in accordance with ASTM B-520. Width: 1.00 in. [25.4 mm] nominal. Thickness: .02in. [0.45 mm] nominal. Weight: 8.0 oz. per 100 feet [745 grams per 100 meters]. EMI SHIELDING PERFORMANCE PERFORMANCE CHARACTERISTICS TECKNIT EMC SHIELDING TAPE Shielding Effectiveness has been tested in accordance with TECKNIT Test Method TSETS-01 and based upon modified MIL-STD-285. Typical values are given below. Corrosion Resistance: Excellent. MATERIALS Sn/Cu/Fe H-FIELD E-FIELD 100 kHz 10 MHz dB dB 45 60 PLANE WAVE 1 GHz 10 GHz dB dB 40 30 Solderability: Excellent. *Special orders available in different widths and in such materials as Monel, Aluminum, Silver Plated Brass, Tin-Plated Phosphor Bronze. A-5 U.S.A.: 908-272-5500 • U.K.: 44-1476-590600 • Spain: 34-91-4810178 A. WIRE MESH TAPE LENGTH VS. CABLE SIZE TECKNIT PART NUMBERS 23-50225 23-50200 23-50233 23-50231 23-50228 23-50229 LENGTH OF EMC TAPE 25 ft. [7.6 m] per roll 100 ft. [30.5 m] per roll 1000 ft. [305 m] per spool 1500 ft. [457 m] per spool 2000 ft. [610 m] per spool 2500 ft. [762 m] per spool WIRE TYPE / WIRE DIAMETER TECKNIT mesh stockings are available in any of our standard wires: Note: For each termination and/or branch connection add 30 in. [76 cm] of EMC tape to anticipated usage. Figure 2 WIRE TYPE Sn/Cu/Fe Monel Aluminum Sn/Phosphor Bronze Ag/Brass WIRE DIAMETER .0045" .0045" .005" .0045" .005" SHIELDING TAPE TERMINATION TECKNIT Two Part, Silver-filled, Conductive Epoxy (Part No. 72-08116), is recommended for cable shielding tape termination. The epoxy is rigid with a volume resistivity of 0.001 ohm-cm. EMC SHIELDING TAPE may also be terminated by means of soldering or clamping. METHODS OF APPLYING EMC SHIELDING TAPE TECKNIT EMC SHIELDING TAPE should be wrapped around the cable assembly. Wrap the main cable and terminate the tape before beginning to wrap the cable branch. Start and end all helical wrapping with a minimum of two overlapping circumferential wraps. At branch connections, start at least 4 in. [100 mm] before and after branch to assure adequate EMC SHIELDING TAPE coverage at the “V” section. Branch connections should not be designed to occur within 4 in. [100 mm] or each other. Stockings are available in widths from .250" to 10.0" Contact TECKNIT for price and availability. ORDERING INFORMATION For 25 and 100 ft. [7.6 and 30.5 m] lengths, EMC SHIELDING TAPE is supplied in individual packages. Longer continuous lengths are supplied on spools. To order standard parts, specify the TECKNIT Part Number and the quantity or rolls or feet. For non-standard items contact your nearest TECKNIT area representative or factory location. Recommended lead for most applications is 0.50 in. [13 mm], although some additional shielding will be achieved when utilizing a 0.25 in. [6 mm] lead. The length of EMC SHIELDING TAPE required for each cable using these two types of lead wraps can be obtained by referring to Figure 2. A-6 Mexico: 528-18-369-8610 • China: 86-10-67884650 • www.tecknit.com