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XAL7050 High-inductance Shielded Power Inductors
XGL4020 Ultra-low DCR Power Inductors

“Unicoil” 10 mm

Tunable RF Inductors

RoHS compliant
  • Windings are precision molded into plastic for mechanical and electrical stability
  • Tuning is done by means of a threaded powdered iron core with a hex socket
  • Optional plated brass shield cans with solderable tabs provide integral shielding
  • Extremely economical, even in small quantities
  • Tune with our handy 3-in-1 "TriTuner" tuning wrench
  • Samples of all 7 mm and 10 mm values are available in Coilcraft Designer's Kit M302
  • RoHS-compliant. Terminations: Series 142 and 143 leads – Tin-silver over copper
    Series 144 leads – Matte tin over copper
    Shield can tabs – Tin-silver over nickel over brass

Buy Now:
Count Unit price
1 $4.44
100 $3.66
250 $2.57
500 $1.90
1000 $1.35
2500 $0.79
5000 $0.52

For high volume or non-stock items, request a quote.

. in stock, ready to ship today.
Request a Sample:

Designer's Kit:
Kit Values Price
M302 98 (2 of each) $60.00

Specifications

Electrical specifications at 25°C.

Unshielded

Part number 1 Color Turns Inductance (µH) 2 Test frequency
(MHz)
Q min
at L nom 3
SRF typ (MHz) DCR (mΩ) 4
No core
nom
min 5 nom max
142-01J08L Brown 0.063 0.063 0.065 0.068 40.0 115 980 7.4
142-02J08L Red 0.092 0.093 0.10 0.11 40.0 118 600 8.4
142-03J08L Orange 0.13 0.13 0.15 0.16 40.0 120 470 9.6
142-04J08L Yellow 0.17 0.17 0.20 0.22 40.0 125 420 10.8
142-05J08L Green 0.21 0.23 0.26 0.29 40.0 122 370 11.9
142-06J08L Blue 0.26 0.28 0.32 0.36 40.0 112 340 13.2
142-07J08L Violet 0.31 0.33 0.38 0.43 40.0 112 310 14.5
142-08J08L Gray 0.36 0.40 0.45 0.50 40.0 106 290 15.7
142-09J08L White 0.41 0.47 0.52 0.57 40.0 110 270 16.9
142-10J08L Black 10½ 0.46 0.55 0.59 0.64 40.0 104 260 18.0
143-09J12L White 0.39 0.40 0.55 0.69 40.0 86 280 16.7
143-10J12L Black 10½ 0.44 0.46 0.62 0.79 40.0 90 270 17.9
143-11J12L Brown 11½ 0.49 0.52 0.71 0.90 40.0 78 260 19.2
143-12J12L Red 12½ 0.55 0.58 0.76 0.95 40.0 84 250 20.5
143-13J12L Orange 13½ 0.60 0.67 0.85 1.0 40.0 84 245 21.7
143-14J12L Yellow 14½ 0.65 0.73 0.91 1.1 40.0 82 240 22.8
143-15J12L Green 15½ 0.69 0.80 0.98 1.2 40.0 90 230 23.9
143-16J12L Blue 16½ 0.77 0.89 1.1 1.3 40.0 74 225 25.2
143-17J12L Violet 17½ 0.83 1.0 1.2 1.3 40.0 74 215 26.4
143-18J12L Gray 18½ 0.90 1.1 1.3 1.4 40.0 92 195 27.6
143-19J12L White 19½ 0.91 1.2 1.3 1.4 40.0 98 190 28.9
143-20J12L Black 20½ 0.96 1.3 1.4 1.5 40.0 92 185 30.0
144-01J12L Brown 0.053 0.056 0.059 0.062 40.0 140 1800 7.4
144-02J12L Red 0.075 0.079 0.088 0.098 40.0 145 1150 8.6
144-03J12L Orange 0.099 0.10 0.12 0.14 40.0 147 900 9.7
144-04J12L Yellow 0.13 0.13 0.16 0.20 40.0 150 765 10.9
144-05J12L Green 0.15 0.16 0.21 0.25 40.0 154 670 12.1
144-06J12L Blue 0.18 0.19 0.25 0.31 40.0 154 610 13.6
144-07J12L Violet 0.21 0.24 0.30 0.36 40.0 158 525 14.7
144-08J12L Gray 0.25 0.28 0.34 0.41 40.0 160 465 15.9
144-09J12L White 0.27 0.33 0.39 0.45 40.0 162 420 17.1
144-10J12L Black 10½ 0.31 0.39 0.44 0.49 40.0 162 390 18.5

Shielded

Part number 1 Color Turns Inductance (nH) 2 Test frequency
(MHz)
Q min
at L nom 3
SRF typ (GHz) DCR (mΩ) 4
No core
nom
min 5 nom max
142-01J08SL Brown 58 58 59.5 61 40.0 82 1.2 7.4
142-02J08SL Red 81 84 86 89 40.0 83 0.65 8.4
142-03J08SL Orange 110 115 120 121 40.0 85 0.55 9.6
142-04J08SL Yellow 140 147 156 160 40.0 88 0.46 10.8
142-05J08SL Green 174 182 197 205 40.0 94 0.41 11.9
142-06J08SL Blue 210 220 240 248 40.0 94 0.37 13.2
142-07J08SL Violet 247 259 280 290 40.0 90 0.33 14.5
142-08J08SL Gray 284 299 322 337 40.0 86 0.32 15.7
142-09J08SL White 319 338 363 377 40.0 88 0.31 16.9
142-10J08SL Black 10½ 357 382 410 422 40.0 82 0.29 18.0
143-09J12SL White 300 315 369 423 40.0 80 0.30 16.7
143-10J12SL Black 10½ 338 355 416 477 40.0 82 0.29 17.9
143-11J12SL Brown 11½ 377 396 468 540 40.0 78 0.27 19.2
143-12J12SL Red 12½ 412 433 509 585 40.0 80 0.27 20.5
143-13J12SL Orange 13½ 452 475 556 637 40.0 80 0.27 21.7
143-14J12SL Yellow 14½ 490 515 604 693 40.0 78 0.26 22.8
143-15J12SL Green 15½ 522 583 660 738 40.0 80 0.25 23.9
143-16J12SL Blue 16½ 575 638 720 801 40.0 76 0.25 25.2
143-17J12SL Violet 17½ 612 693 770 846 40.0 76 0.24 26.4
143-18J12SL Gray 18½ 650 754 814 874 40.0 82 0.22 27.6
143-19J12SL White 19½ 675 792 846 900 40.0 80 0.21 28.9
143-20J12SL Black 20½ 715 847 896 945 40.0 74 0.20 30.0
144-01J12SL Brown 50 52 53 54 40.0 97 2.2 7.4
144-02J12SL Red 67 70 74 78 40.0 98 1.2 8.6
144-03J12SL Orange 88 92 99 106 40.0 98 0.92 9.7
144-04J12SL Yellow 106 111 122 133 40.0 100 0.79 10.9
144-05J12SL Green 126 132 149 165 40.0 101 0.69 12.1
144-06J12SL Blue 147 154 175 196 40.0 106 0.63 13.6
144-07J12SL Violet 168 176 200 223 40.0 104 0.53 14.7
144-08J12SL Gray 190 202 226 250 40.0 108 0.48 15.9
144-09J12SL White 210 239 256 274 40.0 108 0.44 17.1
144-10J12SL Black 10½ 232 270 282 295 40.0 106 0.42 18.5
Notes
  1. To order fixed inductance parts without cores, eliminate the “J08” or “J12”, e.g. 144-01.
  2. Inductance and Q readings taken on Boonton 260-A Q meter with 16 AWG tinned copper 1/2" long soldered along leads and bent at 90° 1/4" down from stand offs.
    All inductance values greater than 0.1 µH read at recommended Q meter frequency.
    All inductance values below 0.1 µH calculated from readings taken at 50 MHz.
  3. Q min measured at L nom at 40 MHz.
  4. DCR measured at 25°C. For other operating temperatures, use this DCR at Temperature calculator.
  5. L min measured with core halfway out top of form.

Termination:

  • Series 142 and 143 leads: Tin-silver over copper
  • Series 144 leads: Matte tin over copper
  • Shield can tabs: Tin-silver over nickel over brass
Environmental
Environmental:
RoHS compliant
Ambient temperature range:
−40°C to +85°C
Storage temperature range:
Component: −40°C to +85°C
Packaging trays or tubes: −40°C to +80°C
Failures in Time (FIT) / Mean Time Between Failures (MTBF):

Physical characteristics

Unshielded Styles

uni10un.gif

 

Shielded Styles

uni10sh.gif

 

General specification

Core Material:
Carbonyl J Core length: 142 Series - 1/4"; 143, 144 Series - 3/8"
Weight:
142 series unshielded: 1.39 – 1.82 g, shielded: 1.64 – 2.16 g; 143 series unshielded: 1.75 – 2.40 g, shielded: 2.85 – 3.54 g; 144 series unshielded: 1.22 – 1.74 g, shielded: 2.35 – 2.91 g
Packaging:
Unshielded: 50 per tube
With shield can: 50 per tube

Soldering/Washing

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.
Refer to Soldering Coilcraft Components before soldering.
PCB Washing:
Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info.

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