Quantity   Component name
1 × IN21a NIXIE tube
10 × MMBTA42 Discrete Semiconductors / Transistors, MOSFETs, FETs, IGBTsSOT
10 × 51K SMD resistor 0805
1 × 10K SMD resistor 0805
12 × Mill-Max 9354-0-15-15-18-27-10-0 PC receptacle
2 × 8x1 100mil header