UHF On-Metal Miniature RFID PCB Tag IDTS-0803 (8 × 3 × 4.3 mm)

A miniature on-metal UHF RFID tag with an Impinj chip

The IDTS-0803 is a rigid black PCB bar, 8 mm by 3 mm, standing 4.3 mm tall at its raised boss. Where the 6 × 3 mm IDTS-0603 uses a U8 chip, this tag carries an Impinj Monza R6-P. That matters if your readers, middleware or encoding routines are already built around Impinj silicon, and it adds 32 bits of user memory alongside the 128-bit EPC and 96-bit TID.

What the 32-bit user memory is good for

The EPC normally holds the asset number. The small user bank can hold one short extra value on the tag itself, such as a size class or a calibration cycle code, which a handheld can display without a network connection. Anything longer belongs in your software, with the tag acting as the key.

Fitting and reading it

Read distance is approx. 0.5 m on metal, so this is a close-range tag: scan it at a tool counter, an instrument tray or a test bench with a UHF handheld or a desktop reader. At 4.3 mm it is taller than the 2.8 mm micro tags in this range, so check clearance if it sits on a part that moves or stacks. For background on chip families, see our Impinj vs NXP chip guide.