Document 111 Tunable RF Inductors – 148 Series 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 guarantee a constant winding pitch and a consistent relationship 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 all values of the 132 Series of low-profile, high Q fixed inductors. To order, contact Coilcraft or visit http://order.coilcraft.com. Part number1 Color Turns 148-01J12LBrown 1½ 148-02J12LRed 2½ 148-03J12LOrange 3½ 148-04J12LYellow 4½ 148-05J12LGreen 5½ 148-06J12LBlue 6½ 148-07J12LViolet 7½ 148-08J12LGray 8½ 148-09J12LWhite 9½ 148-10J12L Black10½ 148-11J12L Brown11½ 148-12J12L Red12½ 148-13J12L Orange13½ Inductance (nH) no core min3 nom max3 2 Q min4 at L nom 35383940 44465258 56607386 74 77 101125 92 96 130164 114120170220 142154222290 168176262346 198208310410 237250375500 276290435580 315338500666 344362540710 1. To order fixed inductance parts without cores, eliminate the “J12”, e.g. 148-13L. 2. Inductance readings taken at test frequency on an Agilent/HP 4342A Q meter with 1/2″ long, 16 AWG tinned copper wire soldered along the leads and bent at 90°, 1/4″ from standoffs. Inductance values at 50 MHz calculated from Cp readings. Inductance values at 25 MHz read at standard Q meter frequency (blue line). 3. L min measured with core halfway out top of form. L max measured with core centered in the windings. 4. Q readings taken on an Agilent/HP 4342A Q meter with 1/2″ long, 16 AWG tinned copper wire soldered along the leads and bent at 90°, 1/4″ from standoffs. 5. Core material: Carbonyl J. Core length: 3/8″. 6. Operating temperature range –40°C to +85°C. 7. Electrical specifications at 25°C. Resistance to soldering heat: Wave solder only. Recommended maximum board surface temperature of 168°C (334°F) for no more than three seconds. Pre-heating is recommended to minimize time over the solder nozzle. Test freq (MHz) 88 96 106 112 112 112 110 106 104 90 84 66 64 0.275 max 6,99 50 50 50 50 50 50 50 25 25 25 25 25 25 3200 1560 1200 980 820 720 620 570 490 450 410 350 320 0.750 ±0.015 19,05 ±0,38 0.300 max 7,62 1 No core SRF min (MHz) 0.190 4,83 0.310 typ 7,87 0.250 ±0.030 6,35 ±0,76 0.360 ±0.010 9,14 ±0,25 22 AWG 0.198 ±0.010 5,03 ±0,25 Weight: 0.7 – 1.2 g Terminations: Tin-silver over copper Packaging: 30 per tube US +1-847-639-6400 [email protected] UK +44-1236-730595 [email protected] Taiwan +886-2-2264 3646 [email protected] China +86-21-6218 8074 [email protected] Singapore + 65-6484 8412 [email protected] 1 Document 111 Revised 03/04/16 © Coilcraft Inc. 2016 This product may not be used in medical or high risk applications without prior Coilcraft approval. Specification subject to change without notice. Please check web site for latest information.