148 COILCRAFT | Alldatasheet
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© Coilcraft, Inc. 2007 Specifications subject to change without notice. Please check our website for latest information. Tunable RF Inductors – 148 Series Document 111 Document 111 Revised 04/27/05 With an overall height of only 0.300 ″, these tunable coils are ideal for applications where low-profile circuit boards are essential. The windings are precision molded in plastic to guaran- tee a constant winding pitch and a consistent relation- ship to the printed circuit board. Tuning is done by means of a threaded Carbonyl J core. Coilcraft Designer’s Kit M304 contains three samples each of the values shown plus 20 values from the 132 Series of low-profile, high Q fixed inductors. To order, contact Coilcraft or visit http://order.coilcraft.com. Part Inductance (nH)2 Q min4 No core SRF number1 Color Turns no core min 3 nom max 3 at L nom min (MHz) 148-01J12L Brown 1 ½ 35 38 39 40 88 @ 50 MHz 3200 148-02J12L Red 2 ½ 44 46 52 58 96 @ 50 MHz 1560 148-03J12L Orange 3 ½ 56 60 73 86 106 @ 50 MHz 1200 148-04J12L Yellow 4 ½ 74 77 101 125 112 @ 50 MHz 980 148-05J12L Green 5 ½ 92 96 130 164 112 @ 50 MHz 820 148-06J12L Blue 6 ½ 114 120 170 220 112 @ 50 MHz 720 148-07J12L Violet 7 ½ 142 154 222 290 110 @ 50 MHz 620 148-08J12L Gray 8 ½ 168 176 262 346 106 @ 25 MHz 570 148-09J12L White 9 ½ 198 208 310 410 104 @ 25 MHz 490 148-10J12L Black 10 ½ 237 250 375 500 90 @ 25 MHz 450 148-11J12L Brown 11 ½ 276 290 435 580 84 @ 25 MHz 410 148-12J12L Red 12 ½ 315 338 500 666 66 @ 25 MHz 350 148-13J12L Orange 13 ½ 344 362 540 710 64 @ 25 MHz 320 1. To order fixed inductance parts without cores, eliminate the “J12”, e.g. 148-13L. 2. Inductance and Q readings taken on Agilent/HP 4342-A Q meter with 16 AWG tinned copper 1/2″ long soldered along leads and bent at 90° 1/4″ down from standoffs. 3. L min measured with core halfway out top of form. L max measured with core centered in the windings. 4. Inductance values at 50 MHz calculated from Cp readings. Inductance values at 25 MHz read at standard Q meter frequency (blue line). 5. Core material: Carbonyl J. Core length: 3/8″. 6. Operating temperature range -40°C to +85°C. 7. Electrical specifications at 25°C. 0.275 6,99 max 0.300 7,62 max
22 AWG
0.310 7,87 typ typ typ 0.190 4,83 0.750 ±0.015 19,05 ±0,38 0.250 ±0.030 6,35 ±0,76 0.360 ±0.010 9,14 ±0,25 0.198 ±0.010 5,03 ±0,25 Weight: 0.7 – 1.2 g Terminations: Tin-silver over copper