RF TRANSFORMERS Transformers for Wideband RF Applications Miniature surface mount package Various impedance ratios available Excellent insertion loss Ideal for Balanced-to-Unbalanced applications Products from 0.5 to 1500MHz bandwidth Electrical Specifications 25C Operating Temperature -40C to +85C 1 2, 3 Impedance Ratio Turns Ratio Bandwidth Insertion Loss Primary Part Pri:Sec Pri:Sec (MHz TYP) Midband Schematic Number Pins (2%) (2%) (dB TYP) 3dB 2dB 1dB CX2041 1:1CT 1:1CT 0.05-450 0.75-300 0.10-200 0.60 B 4-6 CX2040L 1:1 1:1 1.5-500 2.5-400 5-350 0.90 A 4-6 CX2043L 1.5:1 1.5:1 1-1000 0.20 D 3-6 CX2044L 1.5:1 1.5:1 1.0-500 5-100 0.20 A 1-3 CX2045L 1:2CT 1:1.414CT 3-300 0.80 B 4-6 CX2047L 1:4CT 1:2CT 0.5-300 1.5-100 0.24 B 4-6 CX2049L 1:8CT 1:2.83CT 0.1-500 0.3-400 0.5-200 1.16 B 4-6 CX2029 36:1CT 6:1CT 0.05-21 0.40 B 4-6 Electrical Specifications 25C Operating Temperature -40C to +85C 1 2, 3 Impedance Ratio Bandwidth Part Primary Pri:Sec (MHz TYP) Schematic Number Pins (2%) 2dB 1dB CX2038L 75:75 Up to 1500 4.5-1000 C 4-6 CX2039L 50:50 Up to 1500 4.5-1000 C 4-6 NOTE: Optional Tape & Reel packaging can be ordered by adding a T suffix to the part number (ex: CX2041T). Mechanical Schematics RACKET-LITE Tape & Reel 1000 /reel Tray .100 /tray Power Rating .30 mA MAX 0.25 W MAX Inches Dimensions: mm .010 Unless otherwise specified, all tolerances are 0,25 USA 858 674 8100 UK 44 1483 401 700 France 33 3 84 35 04 04 Singapore 65 6287 8998 Shanghai 86 21 32181071 China 86 769 5538070 Taiwan 886 2 26980228 www.pulseeng.com C203.B (8/05)RF TRANSFORMERS Transformers for Wideband RF Applications Application Notes D. For additional impedance ratios and frequency ranges, please contact A. Bandwidth specifications for CX2040 and CX2047 are for a 50 system. Pulse Applications Engineering. B. Materials used in the products are UL94-V0 recognized. Products meet requirements of IEC 695-2-2 (Needle Flame Test). E. Pick and place operation: smooth upper surface of device allows automatic pick and place. C. CX2038, CX2039 and CX2043 transformer configurations do not provide DC isolation between primary and secondary windings. F. For availability of Lead-Free version of this product, please contact Pulse. Notes from Tables 1. Impedance & turns ratios are specified primary:secondary. (CT=Center Tap). 3. These transformers are verified to operate from -40C to +85C. Contact Pulse Applications Engineering for performance data. 2. Bandwidth is referenced to midband loss. %& (%)*) (%)* + ,- ./012 + ,- ./012 (%)** (%)*4 + ,- ./012 + ,- ./012 (%)*& (%)*3 + ,- ./012 + ,- ./012 USA 858 674 8100 UK 44 1483 401 700 France 33 3 84 35 04 04 Singapore 65 6287 8998 Shanghai 86 21 32181071 China 86 769 5538070 Taiwan 886 2 26980228 www.pulseeng.com C203.B (8/05) . 2 . 2 . 2