INFO

A Chip on Board (COB) NFC tag is a type of NFC tag where the integrated circuit (IC) or microchip is directly mounted onto the tag substrate or board without an additional package or housing.

This design approach allows for a compact and low-profile NFC tag.
In a COB NFC tag, the microchip is typically attached directly to the tag's antenna traces using a technique known as wire bonding or flip-chip bonding. The bonding process involves connecting the microchip's contact pads to the corresponding pads on the antenna using thin wires or bumps.

By eliminating the need for a separate package or housing, COB NFC tags can be made smaller and more flexible. This makes them suitable for applications where space is limited, such as tracking small items or embedding them into objects discreetly. COB tags can be found in various forms, including adhesive labels, flexible tags, or even embedded within products during manufacturing.

The NTAG213 chip is a NFC chip from NXP Semiconductors NTAG series and it is commonly used for various NFC applications and operates at 13.56 MHz frequency. 
It is based on the ISO/IEC 14443 Type A standard that provides a common data structure and communication protocol. The NTAG213 chip has a unique ID, a memory capacity of 144 bytes and supports various NFC features. 

COB tags with NTAG213 chip tags can be read by NFC-enabled devices, such as smartphones or tablets, allowing for convenient interactions like mobile payments, access control, information retrieval, and smart poster interactions.

They can be incorporated into product packaging or labels to enable product authentication and anti-counterfeiting measures. By scanning the NFC tag on the product, consumers or retailers can verify the product's authenticity and access additional information or services related to the product.

Technical specification for COB tag with NTAG213 chip

Chip: NTAG213 NXP
Memory: 144 Byte
Operating frequency: 13.56 MHz
RF protocol: ISO 14443A (NFC Type 2)
Reading distance: up to 5 cm (depending on the reader)
COB size: 17,5 mm or 40 mm
Thickness: 0.75 mm
Antenna material: Copper


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