Interface Transformers • SMD and Through Hole Packaging • Single and Dual Transformers • E1/T1/CEPT/ISDN-PRI Interface Transformers for Telecommunication Products Design and Manufacturing Facilities http://www.talema-nuvotem.com Eastern Europe & Czech Republic NT MAGNETICS s.r.o. Chebská 27 322 00 Plzeñ Tel: Int. + 420 37 - 744 9303 Fax: Int. + 420 37 - 744 3697 Email: [email protected] Germany Ireland India TALEMA ELEKTRONIK GMBH Sembdnerstr. 5, Postfach 2523 82110 Germering Tel: Int. + 49 89 - 841 00 - 0 Fax: Int. + 49 89 - 841 00 25 Email: [email protected] NUVOTEM TEO. Crolly Co. Donegal Tel: Int. + 353 74 - 954 8666 Fax: Int. + 353 74 - 954 8139 Email: [email protected] TALEMA ELECTRONIC PVT. LTD. Opposite the SIDCO Industrial Estate Gins Towers 4/5S.H/1, Omalur Main Road Salem - 636 004, Tamil Nadu Tel: Int. + 91 427 - 244 1325 Fax: Int. + 91 427 - 243 0034 E-mail: [email protected] THE TALEMA GROUP • Magnetic Components for ISDN / xDSL / LAN Data Communications Magnetic Components for E1/T1/CEPT/ISDN-PRI - T3/E3/D3/STS-1 TALEMA PROFILE Founded in 1975, The TALEMA International Group has established itself as a world leader in the manufacture of toroidal transformers and related magnetic components. Our strong technical engineering expertise has contributed to the growth of our current workforce to over 1,000 employees in manufacturing locations in Ireland, the Czech Republic and India. QUALITY The TALEMA Group has a total commitment to quality. All facilities maintain very stringent Quality Control and Quality Assurance procedurees and are certified to and manufacture in accordance with ISO-9001 and meet a broad range of International Standards including UL, VDE, IEC, and EN. Over the years The Talema Group has succeeded in designing, producing and delivering in excess of 35 million transformers to its customers. The recent incorporation of xDSL technology into our extensive range of Telecom and LAN magnetics offerings, such as ISDN, 10Base-T, Ethernet transformers for 100/1000Base-T, has broadened our market offering to an even higher level. Performance has been proven in the many design in’s of our products. The fact that we maintain a ship-to-stock vendor rating with over 200 national and international companies is, to us, the best testimonial of our commitment to quality. CONTENTS Catalog Page Nr. Telecom Products E1 / T1 / PRI / CEPT • IC Selection Guide for Single & Dual Interface Transformers - 3-4 • Miniature SMD Dual Interface Transformers - 16 terminals - 0.05”(1.27mm) pitch - 5 • DIL S2M Interface Transformer - 6 Pulse Engineering - Talema Cross Reference Guide THE TALEMA GROUP • Magnetic Components for ISDN / xDSL / LAN Data Communications 2 - 7 IC - E1 / T1 / PRI / CEPT Transformer Selection Guide Talema manufactures a wide range of transformers for all 1.544 and 2.048Mbbs applications. A full listing of LIU Transceiver IC’s with recommended Talema transformers is listed on the following cross reference chart. Performance has been proven in the many design-ins of our products in these applications. Quality and consistency is guaranteed through 100% testing of the specified parameters for Primary Inductance, Leakage Inductance, Turns Ratio, DC resistance and Interwinding Capacitance. This ensures that the Return Loss and Pulse Waveshape requirements of ITU-T G.703 and ANSI T1.102 can be met. Additionally all parts are 100% tested for 1500V minimum isolation. Temperature Performance Products are offered for both standard temperature (Commercial 0° to 70°C) and extended temperature (Industrial -40° to 85°C) applications. Required minimum inductance levels are maintained at the lower temperature limits. Advanced design means that the MJM series may be used for either temperature classification. Series Types IS2M Series MJM Series Single Transformer in 6 pin through hole package Dual Transformer Modules in SMD package IC - E1 / T1 / PRI / CEPT Interface Transformer Cross Reference Guide Talema Transformer Part Number IC Manufacturer Cirrus (Crystal) Cologne Chip E xar IC Part Number Application Standard Temp C S 61304A T1 C S 61304A E1 C S 61305A T1 C S 61305A E1 C S 61535A T1 C S 61535A E1 CS61574A/75 T1 CS61574A/75 E1 C S 61577 E1/T1 C S 61584A IQ3 C S 61584A IQ5 C S 61582 E1/T1 C S 61583 E1/T1 C S 61310 T1-H/ware Mode C S 61310 T1-Host Mode C S 61318 E1-120R C S 61318 E1-75R C S 61581 E1-H/ware C S 61581 E1-Matched Imp HFC-E1 XRT5683A XRT56L85 XRT5793 XRT5794 XRT5894 XRT5897 XRT7288 16 Pin Dual SMD Single DIL S 2M T1/E1/T2/E2 T1/CEPT E1 E1 E1 E1 C EPT Transmit IS2M-8 IS2M-12 IS2M-8 IS2M-12 IS2M-8 IS2M-12 IS2M-8 IS2M-12 IS2M-7 IS2M-7 IS2M-8 IS2M-8 IS2M-8 IS2M-7 IS2M-16 IS2M-7 IS2M-7 IS2M-16 IS2M-6 IS2M-6 IS2M-12 IS2M-12 IS2M-7 IS2M-7 IS2M-10 Extended Temp Receive IS2M-7 IS2M-7 IS2M-7 IS2M-7 IS2M-7 IS2M-7 IS2M-7 IS2M-7 IS2M-7 IS2M-7 IS2M-8 IS2M-8 IS2M-8 IS2M-15 IS2M-15 IS2M-15 IS2M-15 IS2M-15 IS2M-15 Transmit IS2M-21 IS2M-6 IS2M-6 IS2M-19 IS2M-19 IS2M-19 IS2M-19 IS2M-7 IS2M-7 IS2M-7 IS2M-19 IS2M-19 IS2M-19 IS2M-19 IS2M-19 IS2M-21 IS2M-21 IS2M-21 IS2M-19 IS2M-19 IS2M-21 IS2M-21 IS2M-21 IS2M-19 Receive IS2M-19 IS2M-19 IS2M-19 IS2M-19 IS2M-19 IS2M-19 IS2M-19 IS2M-19 IS2M-19 IS2M-19 IS2M-21 IS2M-21 IS2M-21 IS2M-19 IS2M-19 Standard & Extended Temp Tx/Rx MJM-019 MJM-025 MJM-019 MJM-025 MJM-019 MJM-025 MJM-019 MJM-025 MJM-017 MJM-017 MJM-013 MJM-013 MJM-013 MJM-018 MJM-026 MJM-018 MJM-018 MJM-026 MJM-022 MJM-017 MJM-017 MJM-025 MJM-025 MJM-017 MJM-017 MJM-028 Germany: Int.+49 89 - 841 00-0 • Ireland: Int.+35 374 - 954 8666 • Czech Rep: Int.+420 37 - 744 9303 • India: Int.+91 427 - 244 1325 http://www.talema-nuvotem.com 3 IC - E1/T1/ PRI/CEPT Dual SMD Interface Transformer Cross Reference Guide Talema Transformer Part Number IC Manufacturer Receive 16 Pin Dual SMD Standard & Extended Temp Tx/Rx IS2M-7 IS2M-15 IS2M-19 IS2M-20 MJM-018 IS2M-8 IS2M-10 IS2M-7 IS2M-8 IS2M-10 IS2M-10 IS2M-10 IS2M-7 IS2M-8 IS2M-10 IS2M-8 IS2M-15 IS2M-15 IS2M-15 IS2M-15 IS2M-15 IS2M-7 IS2M-15 IS2M-15 IS2M-15 IS2M-15 IS2M15 IS2M-21 IS2M-21 IS2M-20 IS2M-20 IS2M-20 IS2M-20 IS2M-20 IS2M-19 IS2M-20 IS2M-20 IS2M-20 IS2M-20 IS2M-20 IS2M-23 IS2M-23 IS2M-23 IS2M-23 IS2M-19 IS2M-19 IS2M-19 IS2M-21 IS2M-19 IS2M-19 IS2M-19 IS2M-19 IS2M-19 IS2M-19 MJM-019 MJM-028 MJM-018 MJM-019 MJM-028 MJM-028 MJM-028 MJM-018 MJM-019 MJM-028 MJM-019 MJM-027 MJM-010 MJM-021 MJM-022 MJM-023 MJM-018 MJM-018 MJM-018 MJM-019 MJM-016 MJM-018 Single DIL IC Part Number Application DS21352L(N) T1 Standard Temp Transmit Dallas Infineon (Siemens) Level One L u cen t (AT&T) PMC -Sierra DS21552L(N) T1 - Note 1 DS21552L(N) T1 - Note 1 DS21354L(N) E1 DS21554L(N) E1 - Note 1 DS21554L(N) E1 - Note 1 D S 2187 T1/CEPT DS2148/Q8 T1/E1/JI-5V DS2148/Q8 T1/E1/J1-3.3V DS2151Q, DS2152 T1 - Note 1 DS2151Q, DS2152 T1 - Note 1 DS2153Q, DS2154 E1 P E B 2235 T1/CEPT - Note 2 P E B 2254, P E B 2255 E1/T1 - Note 3 P E B 2254, P E B 2255 E1/T1 - Note 3 P E B 2256 E1/T1 P E B 22320 C E P T 120R LXT300Z E1/T1 LXT301Z E1/T1 LXT304A E1/T1 LXT305A T1 LXT307 T1 LXT307 E1 - Note 4 LXT307 E1 - Note 4 LXT310 T1 LXT312, LXT315 T1 LXT317 D EC T LXT318 E 1 120R LXT318 E 1 75R LXT331 E1/T1 - Note 4 LXT331 E1/T1 - Note 4 LXT331 E1/T1 - Note 4 LXT332 E1/T1 LXT334 E1/T1 120/100R LXT334 T1 100R LXT335 E1 120/75R LXT335 120/75R Line Match LXT335 75R Low Power LXT335 75R LXT336 120/75R LXT350 T1 LXT351 T1/E1 LXT351 E 1 120R LXT359 T1 LXT360 E1 LXT361 T1 100R LXT361 T1 100/120/75R LXT361 E 1 75R LXT380, 381, 382 E1 LXT384, LXT386 T1/E1 T7288 CEPT/E1 T7289A D S1 T7290A T1/CEPT T7690 D S1 T7690 C EPT T7693 D S1 PM4341A DSX-1 PM4351 E1/T1 PM6341 E1 IS2M-7 IS2M-7 IS2M-7 IS2M-8 IS2M-11 IS2M-15 IS2M-7 IS2M-7 IS2M-7 IS2M-7 IS2M-7 IS2M-11 IS2M-8 IS2M-7 IS2M-15 IS2M-16 IS2M-10 IS2M-7 IS2M-12 IS2M-18 IS2M-7 IS2M-8 IS2M-7 IS2M-11 IS2M-7 IS2M-11 IS2M-8 IS2M-7 IS2M-17 IS2M-7 IS2M-7 IS2M-10 IS2M-8 IS2M-10 IS2M-8 IS2M-10 IS2M-7 IS2M-6 IS2M-6 Receive IS2M-7 IS2M-7 IS2M-7 IS2M-7 IS2M-7 IS2M-7 IS2M-15 IS2M-15 IS2M-15 IS2M-15 IS2M-15 IS2M-15 IS2M-15 IS2M-15 IS2M-7 IS2M-15 IS2M-15 IS2M-15 IS2M-15 IS2M-15 IS2M-15 IS2M-15 IS2M-15 IS2M-15 IS2M-15 IS2M-15 IS2M-15 IS2M-15 IS2M-15 IS2M-15 IS2M-7 IS2M-6 IS2M-7 IS2M-6 IS2M-8 IS2M-10 IS2M-7 IS2M-10 IS2M-10 Extended Temp Transmit IS2M-19 IS2M-21 IS2M-19 IS2M-21 IS2M-20 IS2M-19 IS2M-19 IS2M-19 IS2M-19 IS2M-19 IS2M-21 IS2M-19 IS2M-20 IS2M-20 IS2M-19 IS2M-19 IS2M-21 IS2M-19 IS2M-19 IS2M-21 IS2M-19 IS2M-19 IS2M-19 IS2M-21 IS2M-21 IS2M-19 IS2M-19 IS2M-19 IS2M-20 IS2M-20 IS2M-20 IS2M-20 IS2M-20 IS2M-20 IS2M-20 IS2M-20 IS2M-19 IS2M-20 IS2M-20 IS2M-20 IS2M-20 IS2M-20 IS2M-20 IS2M-20 IS2M-20 IS2M-19 IS2M-20 IS2M-20 IS2M-20 IS2M-20 IS2M-20 IS2M-20 IS2M-19 IS2M-19 IS2M-19 IS2M-19 IS2M-21 IS2M-19 MJM-018 MJM-018 MJM-018 MJM-018 MJM-016 MJM-019 MJM-017 MJM-018 MJM-026 MJM-028 MJM-018 MJM-025 MJM-019 MJM-018 MJM-016 MJM-018 MJM-016 MJM-019 MJM-018 MJM-018 MJM-017 MJM-028 MJM-019 MJM-028 MJM-013 MJM-017 MJM-028 MJM-029 MJM-028 Notes: 1. Dallas IC’s use either a 1:1.15 or a 1:1.36 ratio transformer depending on the application. Consult the Dallas application notes or contact Talema. 2. Consult Siemens Application Note 12.90 (‘Just a Single Line Transformer Type for all IPAT (PEB2235) Applications’) for calculation of resistor values. 3. The Dual Transformer types MDM-010 and MDM-021 are electrically identical but have different schematics. Either part may be used with the PEB2254 and PEB2255. 4. See Level One Application Note 118 (‘Transformer Specifications for Level One Transceiver Applications’) for further details on the choice of transformer ratios. Germany: Int.+49 89 - 841 00-0 • Ireland: Int.+35 374 - 954 8666 • Czech Rep: Int.+420 37 - 744 9303 • India: Int.+91 427 - 244 1325 http://www.talema-nuvotem.com 4 E1/T1/ PRI/CEPT Dual Transformer Modules Features • SMD design ideal for pick and place compatability while providing unrivaled coplanarity • controlled parameters ensure full compliance with ITU-T G.703 when matched with recommended IC • 1500 Vrms minimum isolation voltage • ideal for all 1.544 and 2.048 Mbs interface applications • manufactured in ISO-9001 approved Talema facility • extended operating temperature -40° to 85°C for all types Electrical Specifications @ 25°C Turns Ratio: Bold = IC side windings MJM Series - Dual Transformers Transformer - I Part Number Turns Ratio +/-5% LP (mH Min) RCU (Ohms) Pri. Transformer - II Sec. Pins Pri. Pins Sec. Turns Ratio +/-5% RCU (Ohms) LP (mH Min) Pri. Sec. Pri. Pins Schematic Sec. Pins MJM-010 1ct:1.41ct 1.2 0.41 0.58 16-15-14 1-2-3 1ct:1.41ct 1.2 0.41 0.58 11-10-9 6-7-8 A MJM-013 1ct:1.15ct 1.2 0.39 0.44 1-2-3 16-15-14 1ct:1.15ct 1.2 0.39 0.44 6-7-8 11-10-9 A MJM-016 1ct:2ct 1.2 0.39 0.77 6-7-8 11-10-9 1ct:2.3ct 1.2 0.39 0.88 16-15-14 1-2-3 A MJM-017 1ct:2ct 1.2 0.39 0.77 16-15-14 1-2-3 1ct:2ct 1.2 0.39 0.77 6-7-8 11-10-9 A A MJM-018 1ct:1ct 1.2 0.39 0.38 16-15-14 1-2-3 1ct:2ct 1.2 0.39 0.77 6-7-8 11-10-9 MJM-019 1:1.15ct 1.2 0.39 0.44 16--14 1-2-3 1ct:2ct 1.2 0.39 0.77 6-7-8 11-10-9 B MJM-021 1ct:1.41ct 1.2 0.41 0.58 1-2-3 16-15-14 1ct:1.41ct 1.2 0.41 0.58 11-10-9 6-7-8 A MJM-022 1ct:1ct 1.0 0.39 0.39 11-10-9 6-7-8 1ct:2.4ct 1.0 0.41 0.90 1-2-3 16-15-14 A MJM-023 1:1ct 1.2 0.39 0.39 16-14 1-2-3 1:1ct 1.2 0.39 0.39 6-8 11-10-9 C MJM-025 1:1/1.26 1.2 0.39 0.48 16-14 1-2-3 1ct:2ct 1.2 0.39 0.77 6-7-8 11-10-9 B MJM-026 1ct:1ct 1.2 0.39 0.39 16-15-14 1-2-3 1ct:1.5ct 1.2 0.39 0.58 6-7-8 11-10-9 A D MJM-027 1:2ct 1.6 0.41 0.83 16-14 1-2-3 2:1 1.6 0.41 0.21 6-8 11-9 MJM-028 1ct:2ct 1.2 0.39 0.77 16-15-14 1-2-3 1:1.36ct 1.2 0.39 0.52 6-8 11-10-9 E MJM-029 1:2.42ct 1.2 0.39 0.94 16-14 1-2-3 1:2.42ct 1.2 0.39 0.94 6-8 11-10-9 C MJM-030 2:1:1 1.2 0.46 0.26 16-14 1-2, 3-4 2:1:1 1.2 0.46 0.26 11-9 5-6, 7-8 F MJM-032 1:2.42 1.2 0.39 0.94 16-14 1-2-3 1:1ct 1.2 0.39 0.39 6-8 11-10-9 C MJM-033* 1:1.9/2.4 1.0 0.41 0.94 16-15-14 1-2-3 0.79:1.9/1 1.0 0.40 0.75 6-7-8 11-10-9 A * MJM-033 Turns Ratio: Pins 16-14:1-2 = 1:1.9, Pins 16-14:1-3=1:2.4; Pins6-8:9-11=0.79:1.9, Pins 6-8:11-10=0.79:1 Package Schematic 0.050 (1.27) 0.350 (8.89) 0.504 (12.80) 0° - 8° 0.077 (1.96) TALEMA IN WK/YR Part Number 0.394 (10.60) 0.079 (2.00) 0.236 0.189 (6.00) (4.80) 0.028 (0.70) 0.350 (8.89) 1 16 1 2 15 2 3 6 14 11 3 6 14 11 7 10 7 10 8 9 8 9 D 0.020 x 0.12 (0.50 x 0.30) 1 16 16 2 16 2 15 14 11 14 11 3 6 8 9 8 14 11 3 6 10 9 8 F 1 3 6 16 1 E 2 Surface Coplanarity will be 0.004(0.10) maximum Dimensions: Inches (Millimeters) Tolerance: ±0.010 (0.25) unless specified otherwise C B A 0.378 0.346 (9.60) (8.80) 10 9 1 2 3 4 5 6 7 8 16 14 11 9 Sales & Marketing, Design and Manufacturing Facilities http://www.talema-nuvotem.com Eastern Europe & Czech Republic NT MAGNETICS s.r.o. Chebská 27 322 00 Plzeñ Tel: Int. + 420 37 - 744 9303 Fax: Int. + 420 37 - 744 3697 Email: [email protected] Germany Ireland India TALEMA ELEKTRONIK GMBH Sembdnerstr. 5, Postfach 2523 82110 Germering Tel: Int. + 49 89 - 841 00 - 0 Fax: Int. + 49 89 - 841 00 25 Email: [email protected] NUVOTEM TEO. Crolly Co. Donegal Tel: Int. + 353 74 - 954 8666 Fax: Int. + 353 74 - 954 8139 Email: [email protected] TALEMA ELECTRONIC PVT. LTD. Opposite the SIDCO Industrial Estate Gins Towers 4/5S.H/1, Omalur Main Road Salem - 636 004, Tamil Nadu Tel: Int. + 91 427 - 244 1325 Fax: Int. + 91 427 - 243 0034 E-mail: [email protected] THE TALEMA GROUP • Magnetic Components for ISDN / xDSL / LAN Data Communications 5 E1/T1/ PRI/CEPT Single Transformers Features • industry standard through-hole footprints • 1500 Vrms minimum isolation voltage • wide range compatible with all common transceiver IC's • controlled parameters ensure full compliance with ITU.T G.703 when matched with recommended IC • ideal for all 1.544 and 2.048 Mbs interface applications • manufactured in ISO-9001 approved Talema facility • operating temperature 0° to 70°C standard -40° to 85°C for extended temperature types. Electrical Specifications @ 25°C Turns Ratio: Bold = IC side windings IS2M Series Transformers Part Number Turns Ratio ±5% OCL (mH Min.) LL (µH Max.) DCR Pri (Ohms) D C R S ec (Ohms) VP (Vrms) Schematic IS2M-6 IS2M-7 IS2M-8 IS2M-10 1ct:2ct 1:2ct 1:1.15ct 1:1.36ct 1.2 1.2 1.5 1.2 0.5 0.5 0.6 0.8 0.7 0.7 0.7 0.5 . 1.2 0.9 0.8 1500 1500 1500 1500 A B B C IS2M-11 IS2M-12 IS2M-15 IS2M-16 IS2M-17 IS2M-18 1:2.3ct 1: 1/1.26 1ct:1 1:1.5ct 1:1.53 1:1.185 1.2 1.5 1.2 1.2 1.2 1.2 0.8 0.5 0.5 0.6 0.8 0.5 0.7 0.7 0.7 0.7 0.5 0.7 1.4 0.9 0.7 1.0 1.0 0.8 1500 1500 1500 1500 1500 1500 C B D B F F 2.0 1.0 1.0 0.8 1500 1500 1500 1500 E A B C Extended temperature types IS2M-19 IS2M-20 IS2M-21 IS2M-23 1ct:2ct 1ct:1ct 1:1.15ct 1:1.14ct 1.2 1.2 1.5 1.2 1.0 1.0 1.0 1.0 1.0 1.0 1.0 0.7 IS2M Series Schematic .500 (12.70) 3 .250 (6.35) .150 (3.81) 2 5 1 6 B A 4 .350 (8.89) .200 (5.08) 1 Line Line IC 6 2 6 5 3 4 4 C Line IC 1 IC 6 1 2 3 5 3 4 0.400 (10.16) D 1 Line E IC 6 2 Note: Unused pins not provided 3 4 4 Line F IC Line IC 3 1 5 3 2 6 1 4 6 Dimensions: Inches (Millimeters) Tolerance: ±0.010 (0.25) unless specified otherwise Germany: Int.+49 89 - 841 00-0 • Ireland: Int.+35 374 - 954 8666 • Czech Rep: Int.+420 37 - 744 9303 • India: Int.+91 427 - 244 1325 http://www.talema-nuvotem.com 6 E1/T1/ PRI/CEPT Cross Reference Guide Pulse - Talema Pulse Part No. Talema Equivalent Pulse Part No. Talema Equivalent Pulse Part No. Talema Equivalent PE-64936 IS2M-15 T1022 MJM-026 T1122 MJM-016 PE-65351 IS2M-7 T1023 MJM-021 T1137 MJM-029 PE-65379 IS2M-23 T1054 IS2M-16 T1144 MJM-022 PE-65388 IS2M-8 T1076 MJM-019 TX1287 MJM-029 PE-65389 IS2M-12 T1077 MJM-026 PE-65415 IS2M-6 T1090 MJM-017 PE-65558 IS2M-11 T1091 MJM-028 PE-65586 IS2M-10 T1092 MJM-025 PE-65770 IS2M-21 T1093 MJM-013 PE-65771 IS2M-19 T1094 MJM-018 PE-65778 IS2M-20 T1095 MJM-010 PE-65861 MJM-017 T1096 MJM-021 PE-65862 MJM-028 PE-65865 MJM-019 PE-65866 MJM-025 PE-65870 MJM-013 PE-68678 MJM-018 PE-68786 MJM-010 Germany: Int.+49 89 - 841 00-0 • Ireland: Int.+35 374 - 954 8666 • Czech Rep: Int.+420 37 - 744 9303 • India: Int.+91 427 - 244 1325 04-05 http://www.talema-nuvotem.com 7 Summary TOTAL PROGRAM SECTION 1 • Toroidal Transformers for Universal Application SECTION 2 • Toroidal Printed Circuit Transformers SECTION 3 • Eleven Good Reasons To Select TALEMA Toroidal Transformers SECTION 4 • Current sense inductors and transformers • Common mode toroidal chokes • High capacity linear storage chokes • Toroidal filter and storage chokes • Differential mode toroids • Power inductors • High stability storage chokes • Miniature, high current, surface mount inductors • Low power, high stability inductors SECTION 5 • Inductive components for ISDN and data communications • Interface signal transformers and modules - toroidal and linear • Isolation and coupling transformers • Pulse transformers SECTION 6 • SMD and DIL Common modeinterface chokes for EMI Noise Suppression • Data and Signal Line Filters SECTION 7 • 50/60Hz Current Transformers for sensing current overload. Primary current ratings from 1 to 200 Amps. • Current Sense Inductors and Transformers for frequency ranges from 20kHz to 200kHz. Primary current ratings to 80 Amps THE TALEMA GROUP • Magnetic Components for ISDN / XDSL / LAN Data Communications