W3579
Antenna, NFC, 13.56 MHz, Adhesive
- Manufacturer: PULSE ELECTRONICS
- Product type:
- Gain: -
- SVHC: No SVHC (04-Feb-2026)
- VSWR: -
- Input Power: -
- Antenna Type: NFC
- Frequency Max: 13.56MHz
- Frequency Min: -
- Product Range: -
- Input Impedance: 80ohm
- Antenna Mounting: Adhesive
- Antenna Polarisation: -
| Delivery and price | |
|---|---|
| Units per pack | 250 |
| Price | 4.92 € |
| Current stock | 100+ |
| Lead time | 30 days |
## Ferrite-backed Embedded NFC Antenna ## @Pulse **/** © LARSEN _Pulse Part Number W3579_ The W3579 is a flexible Near Field Communication (NFC) antenna ideal for tight-space embedded products such as tablets, laptops, and payment terminal devices. It is intended for secure payment or security access applications where connect distances are constricted to keep sensitive information safe. The W3579 has a semi-flexible sintered ferrite backing designed to optimize magnetic fields, thus increasing the corresponding field strength of the antenna. The W3759 is a thin, flexible antenna that can be fed with customer-supplied spring clips, contacts, direct-solder methods or with the use of Pulse’s own W9908/W9909 C-clips. Mounting the antenna is easily accomplished using the thin but aggressive holding adhesive backing. Recommended for mounting on the inside of battery covers, or locations where the antenna will be on or in close proximity to ground planes or displays. ## **Features** - Excellent performances on metal surfaces - Thin, semi-flexible structure - Easily assembles to device covers or mechanics - Well-known antenna concept, reliable technology - RoHS compliant product ## **Applications** - Mobile devices - Payment terminals - Sharing / pairing ## Electrical Specifications |Frequency [MHz]*<br>Reading Distance [mm]*|13.56<br>40 EMVCo<br>28 Grid Scan (avg)||Environmental Specifications<br>Operating Temperature [°C]<br>-40 to +85<br>||Environmental Specifications<br>Operating Temperature [°C]<br>-40 to +85<br>||Environmental Specifications<br>Operating Temperature [°C]<br>-40 to +85<br>||Environmental Specifications<br>Operating Temperature [°C]<br>-40 to +85<br>|| |---|---|---|---|---|---|---| |Impedance [Ω]*|50 / 80|||||| |Self Resonance Frequency [MHz]**|42|||||| |Inductance [µH]**|1.6||Mechanical Specifications|||| |Resistance [Ω]**|3.60|||Color||Black| |Q-Factor**<br>Matched Q Value***|37.8<br>5-30|||Dimensions [in/mm]||1.38 x 1.97 x 0.012<br>(35 x 50 x 0.30)| **NOTE** : Electrical characteristics depend on distance from metal objects and the location of the antenna on the device. Measured in free space - With matching network ** Bare coil without any matching network *** With matching network (adjustable). Typical network picture refer to page 2. San Diego, CA 858 674 8100 Vancouver, WA 360 944 7551 Europe 49 7032 7806 0 Asia 86 755 33966678 North Asia 886 3 4356768 China 86 512 6807 9998 L150.B (2/14) pulseelectronics.com/products/antennas 1 ## Ferrite-backed Embedded NFC Antenna _Pulse Part Number W3579_ **==> picture [85 x 26] intentionally omitted <==** **----- Start of picture text -----**<br> NOTE:<br>Terminal Dimensions<br>5.75 x 2 mm<br>**----- End of picture text -----**<br> ## ~~**Recommended matching network**~~ **Component Value Note** Lemc 560 nH Filter resonance at 15.4 MHz Cemc 180 pF Filter resonance at 15.4 MHz C1 25 pF Antenna matching component, value depends on the antenna environment Antenna matching Antenna matching component, value depends on the antenna environment Antenna matching C2 180 pF Includes C2a and C2b values) Rq 0 Ohm Rq resistors used to lower Q-value Input EMC Filter Matching Q-factor Output to Antenna **==> picture [335 x 11] intentionally omitted <==** **----- Start of picture text -----**<br> 2 pulseelectronics.com/products/antennas L150.B (2/14)<br>**----- End of picture text -----**<br>
Updated at June 9, 2026
Pulse Electronics, a YAGEO company, is a global leader in the design and manufacturing of passive electronic components. With a legacy of innovation dating back to 1956, the company provides essential technology for the communications, computing, industrial, transportation, and IoT sectors. Pulse is recognized worldwide for delivering high-performance solutions that power advanced applications, ranging from 5G networks and electric vehicles to data centers and smart grids. The company's extensive product portfolio is heavily anchored in power and networking magnetics. This includes a comprehensive range of power inductors engineered for exceptional efficiency and reliability in demanding environments. To address complex electromagnetic compatibility challenges, Pulse also manufactures highly effective EMC and RFI suppression solutions, such as common mode chokes and filters, alongside specialized toroidal and RF inductors designed to ensure clean power delivery and optimal signal integrity. Beyond traditional magnetics, Pulse excels in the development of advanced wireless and power conversion components. Their connectivity solutions feature a wide array of high-performance RF antennas and single-band chip antennas tailored for modern connected devices. Furthermore, to support sophisticated power architectures, Pulse provides a broad spectrum of transformers—encompassing PCB-mounted designs, current sensing transformers, and precise pulse transformers—equipping engineers with robust, industry-proven components for power isolation and measurement.
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