Main Board; Diodes - Nixie Clock ITS1A Manual

Q1
Q2
L1
C1
C2-C17,C20-C21
C18
C19
C22
C23
IC1
J3
U1
U2
U2 Socket
S1
Brackets
IC1 Socket
M1
J2
J1
Display Board
Display board: R1, R2, R3,
R4
LED1-4
J1

Main Board

Please note that some of the pictures are from a previous revision of the board. This revision includes
additional resistors in a few places. This is nothing to worry about.
In addition, you may see some pictures with the USB connector on the bottom of the board. In this
revision the USB connector goes on the top of the board.

Diodes

Diodes are polarized. The end with the band should line up with the band on the symbol on the PCB (or
the lead on that end should go through the square hole). Note that all of these diodes (D1-D18) are the
ones that are loose in the bag. They do not have paper tabs attached to them.
ITS1A CLOCK
1 TRANS PNP 300V 0.5A TO-92, MPSA92
1 TRANS NPN 300V 0.5A TO-92, KSP42
1 FIXED IND 220UH 640MA 450 MOHM
1 CAP CER 0.22UF 100V X7R RADIAL
18 CAP ALUM 1UF 20% 100V RADIAL
1 CAP ALUM 220UF 20% 10V RADIAL
1 CAP CER 1000PF 50V C0G RADIAL
1 CAP CER 100PF 50V NP0 RADIAL
1 CAP CER 0.1UF 25V Y5V RADIAL
1 IC I/O EXPANDER I2C 16B 28SDIP, MCP23017
1 MINI USB,RCPT, R/A, DIP, B TYPE,
1 IC REG LINEAR 3.3V 500MA TO220-3, TC1262
1 ESP-01
1 ESP-01 SOCKET 8POS
1 SWITCH TACTILE SPST-NO 0.05A 12V
2 BRACKET UNIVERSAL CLEAR HOLE
1 CONN IC DIP SOCKET 28POS TIN
1 IC REG BCK BST INV ADJ 1.5A 8DIP, MC33063
1 CONN HEADER .100" DUAL R/A 8POS
1 CONN HEADER FMALE 20POS .1" GOLD
6 MACH SCREW PAN HEAD SLOTTED M3
2 HEX NUT 0.217" M3
6 WASHER SPLIT LOCK M3 STEEL
4 HEX STANDOFF M3 BRASS 18MM
4 RES 47K OHM 1/4W 5% CF MINI
4 LED GREEN DIFFUSED ICE CUBE T/H
1 CONN HEADER .100" SNGL R/A 20POS
5