2 layers34 × 25 mm

Reference board
TU-Darmstadt-APQ/Voltage_reference
LM399/ADR1399 based 10 V/15 V sub-ppm stable reference
21 parts6CERN-OHL-W-2.0
Boards in 1 GitHub repository, designed in KiCad, that use the TMP236EVM by Texas Instruments (- Specialized Sensors ROHS). See how each wires it, with its parts, size, README and files; the TMP236EVM’s symbol, footprint and pinout are on its own page.

TU-Darmstadt-APQ/Voltage_reference
LM399/ADR1399 based 10 V/15 V sub-ppm stable reference