X8388-C COILCRAFT | Alldatasheet
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ADSL Interface Transformers Document 255 Specifications subject to change without notice. Document 255 Revised 11/02/04 These transformers provide coupling and line isolation for ADSL interfaces using the Virata Beryllium chip set. They feature very low leakage inductance, stable pri- mary inductance from -40°C to +85°C and longitudinal balance optimized for the best overall performance at ADSL transmission speeds. In addition to the standard model shown, Coilcraft can provide custom transformers with other turns ratios. For free evaluation samples or to discuss custom de- 2. Operating temperature range -40°C to +85°C. 3. Electrical specifications at 25°C. Line side Leakage Part inductance inductance DCR max (Ohms) number Style Chip set (mH) max (µH) Chip side Line side X8388-C SMT Virata Beryllium 600 ±5% 6 1.27 (7-6), 1.19 (9-8) 1.16 (2-3, 4-5) Dielectric Longitudinal Part strength Turns ratio balance Designed number (V) line : chip min (dB) to meet X8388-C 2300 1 : 1.21 45 (20 kHz – 600 kHz) UL 1950 For Virata Beryllium chipset A max B max C max E F typ G typ 13,46 17,75 12,70 14,99 2,50 1,55 × 1,27 Tape and reel: 175/13″ reel 32 mm tape width For packaging data see Tape and Reel Specifications section. Recommended Land Pattern A Dot above pin1 C B E F G Line side Chip side