UNI-PAC 2.8 Low Cost, Low Profile 2.8mm Power Inductors (Surface Mount) Description RoHS 2002/95/EC Miniature size and rugged construction Low DCR and high efficiency Suited for IR and vapor reflow solder Designed for high shock environments Frequency range 1kHz to 2MHz Ferrite core material Applications DC-DC converters Filter inductors Signal conditioning Energy storage applications Computer, pager and battery powered equipment Environmental Data Packaging Storage temperature range: -40C to +125C Supplied in tape and reel packaging, 1,750 per reel Operating ambient temperature range: -40C to +85C range is application specific. Temperature rise is approximately 40C at rated RMS current. Maximum operating temperature is 125C including ambient. Solder reflow temperature: +260C max. for 10 seconds max. Part Inductance OCL (1) Irms (2) Isat (3) DCR (4) Number H H 20% Amperes Amperes Ohms (Rated) (Max.) UP2.8B-1R0-R 1.0 0.98 3.6 8.0 .0286 UP2.8B-1R5-R 1.5 1.59 3.3 6.4 .0349 UP2.8B-2R2-R 2.2 2.44 3.1 5.2 .0356 UP2.8B-3R3-R 3.3 3.24 2.8 4.5 .0474 UP2.8B-4R7-R 4.7 4.15 2.7 3.9 .0478 UP2.8B-6R8-R 6.8 6.73 2.4 3.2 .067 UP2.8B-100-R 10 10 2.1 2.7 .080 UP2.8B-150-R 15 15 1.7 2.2 .120 UP2.8B-220-R 22 22 1.5 1.7 .190 UP2.8B-330-R 33 33 1.3 1.5 .250 UP2.8B-470-R 47 47 1.0 1.2 .340 UP2.8B-680-R 68 68 .89 1.0 .480 UP2.8B-101-R 100 100 .78 .84 .622 UP2.8B-151-R 150 150 .62 .74 .971 1) Open Circuit Inductance Test Parameters: 100kHz, 0.250 Vrms, 0.0 Adc 3) Peak current for approximately 10% roll-off 20C 2) RMS current, delta temp. of 40 C ambient temperature of 85 C 4) Values 20 C Mechanical Diagrams Recommended PCB Layout 2.92 TOP VIEW FRONT VIEW 2.63 max 9.4 7.37 max 2.8 max 12.9 max 9.4 max 2.79 Dimensions in Millimeters. Component View wwllyy = date code R = (revision level) xxx = Inductance value per family chart PM-132 UNSHIELDED DRUM CORE (UP2.8B) UNI-PAC 2.8B UP2.8B xxx wwllyy RUNSHIELDED DRUM CORE (UP2.8B) UNI-PAC 2.8B UNI-PAC 2.8 Low Cost, Low Profile 2.8mm Power Inductors (Surface Mount) Packaging Information 4.0 1.5 dia 2.0 +0.1/-0.0 1.5 dia A min 1.7 1 11.5 24.0 +/-0.3 Bo 2 Ko A Ao SECTION A-A Ao=9.7mm 12.0 Bo=13.4mm User direction of feed Ko=3.1mm Packaging Information: Parts packaged on a 13 Dia. EIA-481 compliant reel. 1,750 parts per reel. Inductance Characteristics 120 100 80 60 40 20 0 0 40 80 120 160 % of Isat PM-133 % of Initial Inductance