---- July 12th 2024 ----

CAGE Code: 5DME2
ITAR Registration Code: M28889
Call: 1 (800) 377-3244
Monday to Friday 8 A.M. - 5 P.M. (Pacific Time)
E-mail questions and requirements to: sales@coilws.com

Pricing is subject to change depending on product availability and backorders.
*Please Note: Items without price are listed for CWS' capability purposes.

Self Supported Coils: Custom Coil Winding Using Small Gauge Wire

CWS specializes in very complicated and very delicate custom windings of self supported coils. We can wind extremely small diameter wires, down to 0.04mm ( 1.5 mils) in diameter. These self supported coils are usually wound on self bondable wires, but they can also be wound on non self bondable wires such as the class 200 deg C wires and then bonded with epoxy. CWS also wind large self supported coils over 300mm ( 12 ") in lengths and widths. Application includes sensors, RFIDs, industrial, medical and military. Very low cost, million pieces volume windings are done at our Asian facility.

Examples of custom coil windings from CWS for RFID applications are:

1) Smart Card Coils for 125 kHz or 13.56 MHz: Please see image below for more description.

2) Clamshell Coils: These are thicker coils than the Smart Card coils. The thickness is approximately 1 mm ( 40 mils) . The copper wire diameter ranges from 0.064mm ( 2.5 mils) to 1.0 mm ( 40 mils). Oval or round shaped depending on custom requirements. The coil inductance is designed to match the module inductance for 125 kHz or 13.56 MHz resonance frequency.

3) Proximity Cards Coils: For 125 kHz or 13.56 MHz resonance frequency. Coil inductance designed to match the module capacitance. Thickness of 1.6mm ( 63 mils). Modules includes Hitag, Mifare, Temic or any customized module. The read range is approximately 5 cm to 15 cm depending on the types of reader used. Oval shaped coils are used to maximize the reading distance.

4) Other Services: Coil to module attachment. Coils are soldered to modules using thermo compression welding. Ideal for Smart Card lamination process. No solder is involved to eliminate added height due to solder. CWS also provide complete tag assembly using ultra sonic welding for plastic casing.

See below for examples of custom coil windings. Please call CWS for your requirements - high quality work at a reasonable tooling cost and low cost volume production.

7" x 4" self supported coils using AWG #20 wire.

Built to customer's specifications using Butyl or Epoxy bondable wires.

CWS can also wind these using non bondable wires for extremely high temperature applications.

Smart Card Coils:
Very thin and flat coils for smart card lamination process. Thickness ranging from 0.20mm to 0.30mm. Ideal for ISO card standard. Very fine copper wires with diameters of 0.04mm to 0.15mm are used. Oval or round shape. The coil inductance is matched with the module capacitance for 125 kHz or 13.5 kHz resonance frequency

Round Coils :

Self supported round or oval shaped coils with any wire gauge down to AWG #40. Single wire diameter layer or multiple wire diameter layers. CWS built to customer's specifications.


Pan Cake Coils:

Single wire diameter thick coils using AWG #38, 40 and 42 gauges. Fully self supported coils wound with extreme precision

Clam Shell Coils:

Rectangular self supported coils using any wire gauge

Very Fine Windings on miniature ferrite rod:

Rod diameter of 1mm. Length of 5mm. Wire size of 0.04mm. Small antenna receiver applications.

Digitizer Pad Coils Sensor Pad Coils Multi-layer coils forming a copper wire hollow rod

Disclaimer: Coil Winding Specialist, Inc., its affiliates, agents, and employees acting on behalf of Coil Winding Specialist, Inc. (collectively, CWS) disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product. CWS reserves the right at any time and from time to time to make changes to design, technical specification, or construction of any product listed on this website without notice. CWS also reserves the right to discontinue or limit sale of any product or service available throughout this website on temporary or permanently basis without notice. CWS highly recommends customers not to use its products offered on this website for inappropriate use and applications. Products should be tested for its suitability by prospective customers in all possible applications and conditions. Customers using or selling CWS products for use in other than recommended applications do so entirely at their own risk and agree to fully indemnify CWS from any damages arising or resulting from such use or sale.

WARNING: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go towww.P65Warnings.ca.gov.

Any Comments, Suggestions or Questions? Contact us!
Email: sales@coilws.com
CWS 353 West Grove Ave. Orange, California 92865
Call us Toll Free: 1-800-679-3184 or 1 (800) 377-3244

Tel: (714) 279-9010, Fax: (714) 279-9482

Copyright 2008, Coil Winding Specialist, Inc
Updated July, 2013

CAGE Code: 5DME2(Registered with www.ccr.gov)