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| Fixed Inductors for Surface Mounting DB318C Inductance Range: 1.0~22H DIMENSIONS Recommended patterns 4.0 Max. 1.8 Max. 1. 0 1.5 4. 1 2. 6 2.2 Direction indication (Unit: mm) 5.1 (Unit: mm) FEATURES * Low profile (4.0mm Max. square and 1.8mm Max. height). * Magnetically shielded construction and low DC resistance. * Ideal for DC-DC converter choke coil for portable equipments (DVD, DSC, Cellular phone, PDA ). * RoHS compliant. * * * * SELECTION GUIDE FOR STANDARD COILS TYPE DB318C (Quantity/reel; 2,000 PCS) TOKO Part Number A997AS-1R0N A997AS-2R2N A997AS-3R3M A997AS-3R9M A997AS-4R7M A997AS-5R6M A997AS-6R8M A997AS-8R2M A997AS-100M A997AS-120M A997AS-150M A997AS-180M A997AS-220M Inductance (1) (H) 1.0 2.2 3.3 3.9 4.7 5.6 6.8 8.2 10.0 12.0 15.0 18.0 22.0 Tolerance (%) 30 30 20 20 20 20 20 20 20 20 20 20 20 DC Resistance (2) () Max. (Typ.) 0.04 (0.032) 0.06 (0.048) 0.07 (0.06) 0.09 (0.08) 0.10 (0.09) 0.12 (0.10) 0.13 (0.11) 0.16 (0.14) 0.18 (0.15) 0.23 (0.19) 0.26 (0.21) 0.33 (0.27) 0.44 (0.37) Inductance Decrease Current(3) Temperature Rise Current(3) (A) Max. (Typ.) T=40C L L L =10% L =30% (A) Max. (Typ.) 1.80 (2.40) 1.30 (1.70) 0.94 (1.26) 0.86 (1.15) 0.85 (1.14) 0.81 (1.09) 0.69 (0.92) 0.59 (0.78) 0.58 (0.77) 0.55 (0.73) 0.48 (0.64) 0.42 (0.56) 0.39 (0.52) 2.30 (3.10) 1.60 (2.10) 1.20 (1.61) 1.10 (1.46) 1.07 (1.43) 1.02 (1.36) 0.89 (1.19) 0.75 (1.00) 0.74 (0.99) 0.70 (0.94) 0.61 (0.81) 0.53 (0.70) 0.51 (0.67) 2.40 (2.80) 1.90 (2.20) 1.64 (1.93) 1.37 (1.61) 1.29 (1.52) 1.23 (1.45) 1.10 (1.29) 1.05 (1.23) 0.99 (1.16) 0.78 (0.92) 0.74 (0.87) 0.63 (0.74) 0.53 (0.63) (1) Inductance is measured with a LCR meter 4284A * or equivalent. (2) DC resistance is measured with a 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 40C, whichever is smaller. (Reference ambient temperature 20C) * Agilent Technologies * Agilent Technologies |
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