The Siemens 6GT2800-5BD00 is a SIMATIC RF300 series RF350T read/write transponder operating at 13.56 MHz with 32 KB of FRAM user memory. It's the tag you spec into an RF300-based identification system — think work-in-progress tracking on automotive assembly lines, pallet identification in warehouse conveyor loops, or tooling presence detection in machining cells where the reader head is already an RF300 unit. The 50 x 50 x 20 mm footprint includes the mounting frame, and it fastens with two M4 screws.
The -25 to +85 °C operating range during read/write access covers most factory floor conditions short of a paint oven or freezer tunnel; outside the read/write area it tolerates -40 to +85 °C for storage. The 125 mm maximum read range is reader-dependent — that's the upper bound with an RF300 antenna; real-world range depends on mounting material (derate on metal) and reader power. The 106 kbit/s transfer rate is adequate for reading the 32 KB user memory in under three seconds per tag.
Memory architecture and write protection
Memory is organized as a 4-byte UID (fixed, factory-programmed), 32765 bytes of user memory in FRAM, and 20 bytes of OTP memory. FRAM gives you fast write endurance — no wear-leveling concerns like EEPROM — and the OTP segment lets you lock configuration data permanently. Block-by-block write protection on the OTP memory means you can protect critical parameters without locking the entire user area. No backup battery needed, which simplifies maintenance on mobile or rotating applications.
Siemens lists this transponder as Active with a Mature lifecycle stage. MTBF is 1200 a.
Mechanical integration notes
Mounts via two M4 screws through the integral mounting frame — no DIN rail, no adhesive backing. The 50 mm square footprint with 20 mm height is compact enough for most pallet or workpiece carriers. PA12 (nylon 12) housing provides chemical resistance and mechanical toughness. Shock resistance per DIN EN 60721-3-7 Class 7 M3 with 500 m/s² acceleration; vibration resistance at 200 m/s². Multitag-capable, so multiple transponders in the read field can be addressed sequentially without collision.