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How the compatible Topaz 512 (NFC Forum Type 1) works
The Topaz 512 (NFC Forum Type 1) is a 13.56 MHz high-frequency contactless credential read over the ISO/IEC 14443 air interface. Its data structure is NFC Forum Type 1; 512-byte EEPROM (480 B user R/W); ISO 14443A Type 1 / ISO 18092. When you present a credential, the reader decodes that exact structure and passes it to your access-control panel as a card number it recognises.
We build the compatible Topaz 512 (NFC Forum Type 1) by encoding the matching data structure onto a programmable 13.56 MHz smart card (ISO/IEC 14443-A) chip. Once written, the credential presents the same bits, the same facility code, and the same card number your reader already accepts. That is what "compatible by specification" means: not a generic look-alike, but a credential engineered for the exact format your system expects.
To order, tell us the part number or format printed on your existing Broadcom card, and our specialists confirm the encoding before anything ships. Bulk and reorder quantities are welcome — pricing is a fraction of OEM list, and every credential is verified to read on your existing equipment.
Also known as
Topaz512 · Topaz 512 · Type 1 Topaz · BCM20203 · BCM20203T512
Broadcom and all other brand and product names are trademarks of their respective owners. Security ID Systems is an independent manufacturer and supplier of compatible access-control credentials and is not affiliated with, authorized by, sponsored by, or endorsed by these companies. Brand and format names are used only to identify the systems our products are compatible with.