November 3, 2005 ROMOLAND, INC. 4257-000X SERIES TRANSFORMER MICROMINIATURE PULSE Features • • • • • • • Dielectric Strength 250Vrms Insulation Resistance 10,000 Megohms Maximum Average Power 25 mW Peak Pulse Voltage 50 Volts MIL-PRF-21038 Seal Construction High Performance to Size Ratio Application Engineering Service: Engineering Data Available on Request Electricial Specification at 25°C • Transformer P/N 4257 -0001 Turns Ratio Pri:Sec:Ter Primary Inductance µH (±20%) ET Constant Volt µSec 30 2.6 1:1:1 4257 -0002 1:1:1 60 307 4257 -0003 1:1:1 250 3.3 4257 -0004 1:1:1 500 4.8 4257 -0005 2:1:1 30 2.6 4257 -0006 2:1:1 60 3.7 4257 -0007 2:1:1 250 3.3 4257 -0008 2:1:1 500 4.8 1 Leakage Inductance µH (Max) .13 .14 .17 .22 .30 .33 .38 .50 Effective Distributed Capacitance 1-2 (1,3,5 GND) pF (Max) 1–2 3–4 5-6 9.0 .38 .38 .38 5 11.5 .45 .45 .45 5 15.5 .57 .57 .57 5 25.0 .81 .81 .81 5 7.5 .38 .38 .38 4 8.5 .50 .50 .50 4 11.5 .60 .60 .60 4 15.5 .81 .81 .81 4 .40 MAX 10.2 3 5 DCR Ω ±20% Interwind Capacitance pF (Max) .30 MAX 7.62 .170 MAX 4.32 2 4 6 2.00 12.7 .015 MIN .38 Ø .019 TYP 0.49 SCHEMATIC .10 2.54 .30 7.62 1 3 5 Datatronics: 2 4 6 .20 5.08 Notes: 1. Dimensions are in inches/mm. 2. Tolerences inches .XXX ± .010 mm .XX ± 25 3. Drawing is not to scale. 28151 Highway 74, Romoland, CA 92585 Tel: 951-928-7700 Toll Free Tel: 888-889-5391 Fax: 951-928-7701 Email: [email protected]