Site Settings

Language settings
Currency settings
Video Library
Cx Family Common Mode Chokes
0402CT Low Profile Chip Inductors
XAL7050 High-inductance Shielded Power Inductors
XGL4020 Ultra-low DCR Power Inductors


144-03J12L, 144-03L

RoHS compliant

For more information and specification about the part.

Go to series
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


Electrical specifications at 25°C.


Part number 1 Color Turns Inductance (nH) 2 Test frequency
Q min
at L nom 3
SRF typ (MHz) DCR (mΩ) 4
No core
min 5 nom max
144-03J12L Orange 99 104 123 142 40.0 147 900 9.7
  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.


  • 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
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



Shielded Styles



General specification

Core Material:
Carbonyl J Core length: 142 Series - 1/4"; 143, 144 Series - 3/8"
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
Unshielded: 50 per tube
With shield can: 50 per tube


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.

Related products

Related product series