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

2208NF Series

NFMI Antenna Coils

RoHS compliant halogen free
  • Designed for Near Field Magnetic Induction (NFMI) for syncing earbuds/headphones, hearing aids, and other IoT wearable devices in audio data streaming applications.
  • Optimized for use at 10.579 MHz
  • Small surface mount package, only 5.95 × 2.48 × 2.2 mm (L × W × H)

Buy Now:

The part number you have selected is not available through our online store.

Please click the "Request Quote" button for pricing and more information.

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


Electrical specifications at 25°C.

Part number 1 Inductance (µH) 2
(Tolerance: ±5%)
Q min
at 10.579 MHz 3
DCR max (mΩ) 4 SRF typ (MHz) 5
2208NF-372XJR_ 3.7 80 710 200
2208NF-392XJR_ 3.9 80 740 195
  1. When ordering, please specify packaging code: e.g. 2208NF-392XJRC.
  2. Inductance measured at 10.579 MHz using a Coilcraft CCF1506 test fixture and Coilcraft-provided correlation pieces with an Agilent/HP 4286 impedance analyzer.
  3. Q measured using an Agilent/HP 4991A.
  4. DCR measured on Cambridge Technology micro-ohmmeter and a Coilcraft CCF858 test fixture.
  5. SRF measured using Agilent/HP 8753D network analyzer and Coilcraft CCF1506 test fixture.
Irms: Current that causes a 15°C temperature rise from 25°C ambient. Because of their open construction, these parts will not saturate.


  • R = RoHS compliant matte tin over nickel over silver-platinum-glass frit.


  • C = 7″ machine-ready reel. EIA-481 punched paper tape (1000 parts per full reel). Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ($25 charge).
  • D = 13″ machine-ready reel. EIA-481 punched paper tape. Factory order only, not stocked (3500 parts per full reel).
RoHS compliant , halogen free
Ambient temperature range:
−40°C to +85°C with Irms current
Storage temperature range:
Component: −40°C to +100°C
Tape and reel packaging: −40°C to +80°C
Maximum part temperature:
+100°C (ambient + temp rise)
Failures in Time (FIT) / Mean Time Between Failures (MTBF):

Performance curves

Q vs. Frequency

L vs. Frequency

Physical characteristics

A max B max C max D E F G H  
0.234 0.098 0.087 0.079 0.020 0.026 0.197 0.085 inches
5,95 2,48 2,20 2,00 0,50 0,65 5,00 4,35 2,15

Tape and Reel specification

Parts per reel Reel dimensions (mm) Tape dimensions (mm) Orientation
7" (178 mm) 13" (330 mm) A B C D E W P Po P1 H T part_or_i.gif
1000 3500* 178/330 60/100 13 18,4 12,4 12 8 4 2 2,26 0,23
* Special order

General specification

Core Material:
0.1 g
1000 per 7″ reel; 3500 per 13″ reel. Paper tape: 12 mm wide, 0.23 mm thick, 8 mm pocket spacing, 2.26 mm pocket depth


Moisture Sensitivity Level (MSL):
1 (unlimited floor life at <30°C / 85% relative humidity)
Resistance to soldering heat:
Three reflows at >217°C for 90 seconds (+260°C ±5°C for 20 – 40 seconds), allowing parts to cool to room temperature between.
Refer to Soldering Coilcraft Components before soldering.
PCB Washing:
Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info.