IoT Livestock Ear Tag PCB Design
Reviews
Physiomx Ear Tag Rev B
Properties
Tag-Connect SWD plus labeled test pads for VBAT, 3V3, GND, SWDIO, SWDCLK, RESET, solar input
Top-edge antenna keep-out reserved for LTE and GNSS antennas
Solar-assisted single-cell LiPo with charger/power-path and stable 3.3 V rail
40 mm x 24 mm
40 mm x 24 mm
ESD/TVS on solar input, charging/test pads, and tamper lines with low-capacitance protection where needed
24 mm
Zero ERC/DRC errors, no airwires, stable 3.3V during 350-500mA LTE bursts, accessible grouped debug/test pads, dedicated LTE/GNSS RF keep-outs, EVT-ready outputs for Seeed Fusion.
Rectangular rounded corners
Seeed Studio Fusion EVT proto
Top RF zone with separate LTE and GNSS antennas and full keep-out; RF transition row with pi matching; central nRF9151 with crystals and eSIM; lower-middle sensors and NFC; bottom power path, charger, battery protection, debug and grouped test pads.
100nF at every IC power pin, 1uF local bulk, 4.7uF main rail, 10uF near battery and charger, I2C pull-ups 4.7k, reset pull-up 10k, default GPIO bias 100k where required
Reserved top-edge keep-out zone for LTE and GNSS antennas
Outdoor livestock deployment
5-10 units
4-layer: L1 signals/components, L2 solid GND, L3 power+signals, L4 signals
LTE-M/NB-IoT, GNSS, NFC, I2C, SPI, SWD
45 mm x 30 mm x 12 mm
Rev B
Separate LTE and GNSS antennas, independent RF paths, pi matching, controlled impedance, stitching vias, keep noisy circuits away from RF
Single-cell LiPo with solar-assisted charging and regulated 3.3V system rail
Seeed Studio Fusion EVT, 5-10 units
40 mm x 24 mm rounded rectangle
Rugged outdoor animal-mounted ear tag, sealed service access, EVT 5-10 units
4-layer: L1 signals/components, L2 solid GND, L3 power+signals, L4 signals
40 mm
Top edge antennas, below antennas RF matching and nRF9151, middle sensors/flash/NFC/eSIM, bottom power subsystem and battery clearance
Pricing & Availability
Distributor | Qty 1 |
|---|---|
Arrow | $25.12–$120.45 |
Digi-Key | $6.15–$244.46 |
LCSC | $37.77–$38.00 |
Mouser | $35.68–$41.61 |
TME | $1.13 |
Verical | $6.39–$27.96 |
Controls
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