A9845-AL COILCRAFT | Alldatasheet
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© Coilcraft, Inc. 2007 Specifications subject to change without notice. Please check our website for latest information. SMT Planar Transformer– A9845-AL Document 345 Document 345 Revised 06/19/07 Coilcraft’s surface mount planar transformers are ideal for applications that require high efficiency in a low-profile package. They are designed to perform in push-pull topolo- gies operating at 200 – 300 kHz. The auxiliary winding can be used to control input current to PWMs. Planar transformers offer high power densities along with great reliability and repeatability. The A9845-A has a smaller footprint and lower profile than our other planar transformers. The circular windings provide very low DCR and excellent leakage inductance values. To complete your design, Coilcraft offers a wide variety of power inductors for use as input and output chokes. To request free evaluation samples, contact Coilcraft or visit www.coilcraft.com. 1.100 27,94 max 0.860 21,84 0.325 8,26 0.060 1,52 0.100 2,54 max max 0.224 5,69 0.224 5,69 0.180 4,57 0.924 23,47 Recommended Land Pattern 0.814 20,680.080 2,03 0.070 1,78 0.110 2,79 /L50135 /L50135 0.006 /0,15 Primary Secondary Auxiliary 12T 2T12T 1. Inductance measured between pins 2 and 4 at 250 kHz, 0.1 Vrms, 0 Adc. 2. Storage and ambient operating temperature range: –40°C to +85°C. 3. Electrical specifications at 25°C. Input Output Primary Leakage Pri/sec Part Output voltage Output current inductance 1 inductance DCR max (Ohms) isolation number1 power (W) range (V) voltage (V) (A rms) min (mH) max (µH) pri sec aux (Vrms) Weight: 10.6 g Terminations: Matte tin over nickel over brass Tape and reel: 250/13″ reel 56 mm tape width For packaging data see Tape and Reel Specifications section. 1. When ordering, please specify packaging code: A8945-AL D Packaging: D =1 3″ machine ready reel. EIA-481 embossed plastic tape (250 parts per full reel). B = Less than full reel. In tape, but not machine ready. To have a leader and trailer added ($25 charge), use code letter D instead.