d312f series surface mount fixed inductor january 2005 1 ?2005 toko america, inc. all rights reserved printed in usa cf-269-d312f r-log0105a resist zone 0.5 3.6 4.2 2.0 1.4 3.6 type d312f inductance range: 1.0 - 47 h frequency range: 0.1 - 1mhz features ? 3.6mm x 3.6mm footprint ( 0.2mm) ? 1.2mm maximum height ? reflow solderable ? packaged on 2000 piece reels ? lead-free terminations dimensions & recommended patterns: unit: mm note: =p5 is added to each part number to indicate tape and reel packaging. description the toko d312f series is an extremely low profile surface mount fixed inductor with a maximum height of 1.2mm. the product is specifically designed for space constrained dc-dc converter applications in portable platforms including wireless handsets, pda's, and consumer electronics. 1.2 max. 3.6 0.2 3.6 0.2 type d312f toko part number 976as-1r0n=p5 976as-1r5m=p5 976as-2r2m=p5 976as-3r3m=p5 976as-4r7m=p5 976as-6r8m=p5 976as-8r2m=p5 976as-100m=p5 976as-120m=p5 976as-150m=p5 976as-220m=p5 976as-270m=p5 976as-330m=p5 976as-470m=p5 inductance (1) ( h) 1.0 1.5 2.2 3.3 4.7 6.8 8.2 10 12 15 22 27 33 47 0.12 0.14 0.17 0.26 0.38 0.48 0.56 0.79 0.90 1.01 1.46 1.98 2.26 3.28 30 20 20 20 20 20 20 20 20 20 20 20 20 20 to lerance ( % ) dc (2) resistance ( ? ) max. t emperature (3) rise current +40 c ? t (a) max. standard parts selection guide (1) inductance is measured by lcr-meter 4284a (agilent) or equivalent. (2) dc resistance is measured by digital multimeter tr6871 (advantest) or equivalent. (3) maximum allowable dc current is that which causes a 30% inductance reduction from the initial value, or coil temperature to rise by 40 c, whichever is smaller. (reference ambient temperature 20 c). rated dc current for a 10% inductance reduction is provided as well. 1.48 1.31 1.08 0.92 0.74 0.63 0.58 0.50 0.46 0.43 0.35 0.32 0.29 0.23 -10% (a) max. 1.76 1.56 1.20 1.00 0.83 0.71 0.67 0.56 0.53 0.49 0.41 0.38 0.33 0.28 inductance (3) decrease current -30% (a) max. 1.12 1.07 0.90 0.68 0.66 0.48 0.44 0.47 0.43 0.36 0.34 0.29 0.28 0.20
d312f series surface mount fixed inductor january 2005 2 ?2005 toko america, inc. all rights reserved printed in usa cf-269-d312f r-log0105a toko america, inc. 1250 feehanville drive, mount prospect, illinois 60056 tel: (847) 297-0070 fax: (847) 699-7864 web: http:// www.tokoam.com the information furnished by toko, inc. is believed to be accurate and reliable. however, toko reserves the right to make chan ges or improvements in the design, specification or manufacture of its products without further notice. toko does not assume any liability arising from the application or use of any product o r circuit described herein, nor for any infringements of patents or other rights of third parties which may result from the use of its products. no license is granted by implication or otherw ise under any patent or patent rights of toko, inc. 976as-2r2m (2.2 0 1 2 3 4 5 0 200 400 600 800 1000 1200 1400 1600 dc current (ma) inductance ( h ) 0 1 2 3 4 5 0 200 400 600 800 1000 1200 dc current (ma) inductance ( h) 0 1 2 3 4 5 0 200 400 600 800 1000 dc current (ma) inductance ( h) 0 1 2 3 4 5 6 7 8 9 10 0 200 400 600 800 1000 dc current (ma) inductance ( h) 0 1 2 3 4 5 6 7 8 9 10 0 200 400 600 800 dc current (ma) inductance ( h) 0 1 2 3 4 5 6 7 8 9 10 11 0 200 400 600 800 dc current (ma) inductance ( h) 0 2 4 6 8 10 12 14 0 100 200 300 400 500 600 700 dc current (ma) inductance ( h) 0 2 4 6 8 10 12 14 16 0 100 200 300 400 500 600 700 dc current (ma) inductance ( h) 0 5 10 15 20 25 0 100 200 300 400 500 600 dc current (ma) inductance ( h) 0 5 10 15 20 25 30 0 100 200 300 400 500 dc current (ma) inductance ( h) 0 5 10 15 20 25 30 35 0 100 200 300 400 dc current (ma) inductance ( h) 0 10 20 30 40 50 0 100 200 300 400 dc current (ma) inductance ( h ) ica chaaciic
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