Electrical / Environmental Surface Mount Planar Transformers • Operating Temperature Range • Ambient Temperature, Maximum -25°C to +125°C 85°C Specifications Part Number Power Rating HM90-24240 Flyback 300kHz 60W 48V to 23V 5A Flyback 300kHz 60W 48V to 23V 5A Half Bridge 100kHz 125W 48V to 5V 25A Forward 300kHz 55W 48V to 5V 8A/3.3V 4.5A HM90-29240 HM90-27141 HM90-30181 Notes: Pri Sec Pri, P1 Inductance(1) (µH) Min. 5 1 23.5 5 1 8 10 Turns Ratio Leakage Inductance(2) (µH) Typ. DCR(3) mΩ Max. Pri-Sec Isolation P1 S1 S2 0.47 100.0 10.0 – 1000Vac 23.5 0.47 100.0 10.0 – 1000Vac 1:1 140.0 0.40 35.0 3.5 3.5 1200Vdc 2:3 180.0 0.40 54.0 5.0 9.0 1500Vdc (1) Inductance is measured at 100kHz. 0.1V without DC current. (2) Leakage inductance is measured at P1 with all other windings shorted. (3) DC resistance is measured at 25°C. Outline Dimensions (mm) / Schematics HM90-24240 Top View Side View Recommended PCB Pattern Schematic Recommended PCB Pattern Schematic HM90-29240 Top View 66 Side View MAGNETIC COMPONENTS SELECTOR GUIDE 2006 EDITION We reserve the right to change specifications without prior notice. www.bitechnologies.com Outline Dimensions (mm) / Schematics HM90-27141 Top View Side View Recommended PCB Pattern Schematic Recommended PCB Pattern Schematic HM90-30181 Top View Side View Ordering Information HM90 Model Series Case Size: 24 240 TR Tape & 13” Reel (150 Units/Reel) Inductance Code: First 2 digits are significant. Last digit denotes the number of trailing zeros. For values below 10µH, ‘R’ denotes the decimal point 2006 EDITION MAGNETIC COMPONENTS SELECTOR GUIDE www.bitechnologies.com We reserve the right to change specifications without prior notice 67