{"license":"Free for any use with attribution link to rfid-datasheet.com","citation":"RFID-Datasheet.com Chip Database — Roxtron","source":"https://rfid-datasheet.com/chip/fdx-b-iso-11784-5","methodology":"https://rfid-datasheet.com/methodology","data_notes":"Includes automated enrichment. Null means unknown; last_checked is link availability, not technical review. Manufacturer documents govern specifications.","generated_at":"2026-11-01T22:00:29.072Z","chip":{"id":"527747b6-eab5-4fa9-8695-bd6d619f5fd3","slug":"fdx-b-iso-11784-5","name":"FDX-B / ISO 11784/5","manufacturer":"Sokymat","frequency_category":"LF 125 kHz","short_description":"ISO 11784/11785 134.2kHz animal-ID FDX-B transponder","manufacturer_url":"https://www.mikrocontroller.net/attachment/3015/SW017_ISO_tag_DS.pdf","frequency":"134.2 kHz (100-200 kHz operating range)","protocol":"ISO 11784 / ISO 11785 FDX-B","memory":"128 bits read-only (factory programmed: 24 bits electrically coded, remainder mask programmed)","interface":"RF (contactless inductive coupling)","temp_range":"-40°C to +85°C (storage: -55°C to +200°C)","form_factor":"Die: 1.23mm x 1.71-1.96mm (450µm thick), optional on-chip capacitor (0pF, 75pF, or 200pF ±10%), PDIP-14 package available","security":null,"use_cases":["animal-identification","asset-tracking","access-control"],"engineering_brief":"The SW017 is a monolithic CMOS read-only RFID transponder operating at 134.2 kHz with full ISO 11784/11785 FDX-B compliance. It features a custom-configurable 128-bit memory array with mixed factory mask and electrical coding, on-chip full-wave rectifier, and optional integrated resonant capacitor (0-200pF) to simplify tag assembly. The chip uses load modulation with 32 RF periods per bit and includes CRC-CCITT error detection, continuously transmitting its ID while powered.","enriched":true,"url_status":"ok","link_status":"invalid","last_checked":"2026-11-01T03:31:28.371+00:00","last_status_code":403,"last_content_type":"text/html; charset=UTF-8","created_at":"2026-06-14T16:30:56.111445+00:00","manufacturer_id":"6286a69a-887c-4aa3-a82c-80f0eaeb368c","chip_type":"tag_ic","dual_interface":false,"is_family_hub":false,"meta_description":"Sokymat SW017 ISO 11784/11785 FDX-B compliant 134.2kHz RFID transponder IC with 128-bit read-only memory for animal identification applications.","faq":[{"a":"The Sokymat SW017 operates at 134.2 kHz with an operating range of 100-200 kHz, using the low-frequency (LF) RFID band specified in ISO 11784/11785 for animal identification.","q":"What frequency does the Sokymat FDX-B transponder operate at?"},{"a":"Yes, the SW017 is fully compliant with both ISO 11784 and ISO 11785 standards using the FDX-B (Full Duplex-B) protocol, ensuring compatibility with standard animal identification readers worldwide.","q":"Is the Sokymat SW017 compatible with ISO 11784/11785 readers?"},{"a":"The SW017 has 128 bits of read-only memory that is factory programmed. This consists of 24 bits that are electrically coded and the remainder that is mask programmed during chip manufacturing.","q":"How much memory does the Sokymat FDX-B chip have?"},{"a":"No, the SW017 is a read-only transponder with factory-programmed memory that cannot be modified after production. The ID is permanently encoded during manufacturing.","q":"Can the Sokymat SW017 memory be rewritten after manufacturing?"},{"a":"The SW017 includes CRC-CCITT error detection to ensure data integrity during transmission. The chip continuously transmits its ID using load modulation with 32 RF periods per bit while powered.","q":"What error detection does the Sokymat FDX-B transponder use?"},{"a":"The SW017 includes an optional integrated resonant capacitor (0-200pF range) that can simplify tag assembly and eliminate the need for external resonant components in many applications.","q":"Does the Sokymat SW017 require external capacitors for operation?"}],"standards":["iso-11784-11785"],"alternatives":["eb58ce60-c755-4c7b-9d26-0ccef10761d4"],"no_direct_competitor":false,"long_form_html":null,"og_image_url":null,"canonical_url":"https://rfid-datasheet.com/chip/fdx-b-iso-11784-5"}}