HM743R0TB

MODEL HM74 SERIES High Frequency High Current Low Profile Surface Mount Inductors FEATURES AND BENEFITS NEW PRODUCT • • • • • • Closed magnetic circuit for high density board assembly High performance, low loss ferrite core up to 5 MHz Low profile designed for machine placement Low DCR and high current up to 27 amps continuous Class F design is compatible with vapor phase and infrared reflow soldering Custom designs available APPLICATIONS • Laptop and notebook computers • DC/DC converters in distributed power systems or VRM applications • Inductor for general purpose use ELECTRICAL / ENVIRONMENTAL Operating Temperature Range Storage Temperature Range Ambient Temperature, Maximum Insulation System Specifications subject to change without notice. -25°C to +135°C -40°C to +85°C 80°C Class F, 155°C 6 6-121 Model HM74 Series SPECIFICATIONS Part Number HM74-R47 HM74-R85 HM74-1R4 HM74-2R1 HM74-3R0 HM74-4R0 HM74-5R1 HM74-6R3 Inductance (1) Nominal µH ±20% 0.47 0.85 1.40 2.10 3.00 4.00 5.10 6.30 Rated (2) DC Current Amps 26.0 19.0 14.5 12.5 8.0 7.5 7.0 6.5 DC Resistance mΩ Max. 1.1 2.1 3.6 4.4 11.9 13.7 15.5 17.2 DC (3) Resistance mΩ Typ. 0.9 1.8 3.0 3.7 9.9 11.4 12.9 14.3 Notes: (1) Inductance measured at 100kHz, 0.25V without DC current. (2) Rated DC current is the approximate current at which inductance will be decreased by 20% from its initial (zero DC) value or the DC current at which ∆T = 50°C, whichever is lower. (3) DC resistance measured at 20°C. ORDERING INFORMATION HM74 Model Series 1RO TR Packaging Option: TB = Tubes (32 Units /Tube) TR = Tape & 13" Reel (250 Units /Reel) Inductance Code: First two digits are significant. Last digit denotes number of trailing zeros. Values below 10µH "R" denotes decimal point. 6-122 Model HM74 Series OUTLINE DIMENSIONS (Inch/mm) .583 Max. 14.8 Recommended Solder Pad Layout Top View .173 4.40 .622 15.8 Max. .276 7.00 .449 11.40 .173 4.40 .197 Max. 5.0 .472 12.00 6 6-123 Model HM74 Series