FDX-B / ISO 11784/5
The Sokymat FDX-B / ISO 11784/5 is an LF 125 kHz RFID tag IC, with 128 bits read-only (factory programmed: 24 bits electrically coded, remainder mask programmed), operating at 134.2 kHz (100-200 kHz operating range) under ISO 11784 / ISO 11785 FDX-B.
ISO 11784/11785 134.2kHz animal-ID FDX-B transponder
Full Specifications
| Manufacturer | Sokymat |
|---|---|
| Frequency Category | LF 125 kHz |
| 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) |
| Temperature 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 | Refer to datasheet |
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.
Typical Applications
Standards & Compliance
Frequently Asked Questions
What frequency does the Sokymat FDX-B transponder operate at?
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.
Is the Sokymat SW017 compatible with ISO 11784/11785 readers?
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.
How much memory does the Sokymat FDX-B chip have?
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.
Can the Sokymat SW017 memory be rewritten after manufacturing?
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.
What error detection does the Sokymat FDX-B transponder use?
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.
Does the Sokymat SW017 require external capacitors for operation?
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.
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