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| Document 345 SMT Planar Transformer - A9845-AL 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 topologies 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. Part number1 A9845-AL_ Output power (W) 10 Input voltage range (V) 36 - 75 Output voltage (V) 3.3 Output current (A rms) 2.0 Primary Leakage inductance1 inductance min (mH) max (H) 1.50 1.4 DCR max (Ohms) pri sec aux 0.80 0.0105 0.120 Pri/sec isolation (Vrms) 1200 1. When ordering, please specify packaging code: A8945-ALD Packaging: D = 13 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. 0.924 23,47 0.180 4,57 0.814 20,68 1. Inductance measured between pins 2 and 4 at 250 kHz, 0.1 Vrms, 0 Adc. 2. Storage and ambient operating temperature range: -40C to +85C. 3. Electrical specifications at 25C. 2 1.100 max 27,94 8 1 12T Primary 3 8 6 0.080 2,03 1 12T 7 2T 7 0.860 max 21,84 5 6 7 5 0.224 5,69 0.224 5,69 0.110 2,79 4 1 Secondary 2T 8 0.070 1,78 6 Auxiliary 6T 5 Recommended Land Pattern 0.325 max 8,26 0.006 /0,15 0.060 1,52 0.100 2,54 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. Specifications subject to change without notice. Please check our website for latest information. Document 345 Revised 06/19/07 (c) Coilcraft, Inc. 2007 |
Price & Availability of A9845-AL
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