DRA-36M REV2 Parts List


U1 - CM119A (presoldered)
U2 - NE555

D1 - BAT43 (blue - observe polarity!)
D2 - Not installed on M boards.
D3 - 1N4148 (dark orange - observe polarity!)
D4 - Not installed on M boards.
D5 - BAT43 (blue - observe polarity!)
D6 - 1N4148 (dark orange - observe polarity!

J1 - Mini-DIN-6 Female Chassis Connector
J2 - USB-B Chassis Jack

These headers are installed so the shorter section is inserted (soldered) into the board
JU1 - 2 pin header - blue - with shorting bar or "shunt"
JU2 - Not installed on M boards.
JU3 - 3 pin header - blue - with shorting bar or "shunt"
JU4 - 2 pin header - blue - with shorting bar or "shunt"
JU5 - 3 pin header - blue - with shorting bar or "shunt"
PTT - 2 pin header - red - with shorting bar or "shunt"
PTT - 2 pin header - red - with shorting bar or "shunt"

LED1 - 3mm Red LED
LED2 - 3mm Green LED
LED3 - 3mm Blue LED
All LEDs orient with short lead in the square hole.

(1) 8 Pin DIP IC Socket

Y1 - 12 MHz Crystal

Q1 - 2N2222
Q2 - 2N7000
Q3 - 2N2222

All Resistors are 1/8 Watt
R1  - 4.7k
R2  - 330 ohm
R3  - 1k
R4  - 10k
R5  - 10k
R6  - 10k
R7  - 1M
R8  - 22 ohm
R9  - 22 ohm
R10 - 1.5k
R11 - 1M 
R12 - 100k Pot (104)
R13 - 4.7k
R14 - 1k Pot (102)
R15 - 4.7k
R16 - 1k Pot (102)


NOTE:  Components that are supplied on a "carrier" paper should have their leads cut from the 
carrier near the edge of the paper.  Don't try to pull the component away from the carrier 
otherwise you could damage it.

NOTE: Some components have pre-bent leads and they'll need to be reformed to allow 
the part to fully seat on the surface of the circuit board.

NOTE:  Polarized capacitor locations include a "+" (plus sign) silkscreened where the positive 
lead orients.


C1  - 47pF small yellow MLCC (marked 47 or 470)
C2  - 20pF or 22pF yellow or blue MLCC (marked 20, 200 or 22, 220)
C3  - .47uF Tantalum (yellow - pre-installed)
C4  - 20pF or 22pF yellow or blue MLCC (marked 20, 200 or 22, 220)
C5  - .47uF Tantalum (yellow - pre-installed)
C6  - 10uF electrolytic (observe polarity!)
C7  - 10uF electrolytic (observe polarity!)
C8  - 10uF electrolytic (observe polarity!)
C9  - 47pF ceramic (marked 47 or 470)
C10 - 4.7uF small electrolytic (observe polarity!)
C11 - 4.7uF small electrolytic (observe polarity!)
C12 - 4.7uF small electrolytic (observe polarity!)
C13 - 47pF small yellow MLCC (marked 47 or 470)
C14 - Not installed on M boards.
C15 - .1uF .1"LS (Marked 104) (smaller yellow)
C16 - 1uF Tantalum (green or yellow) (observe polarity - printing faces R12)
C17 - .01uF .1"LS  (Marked 103) (yellow)
C18 - 1uF Tantalum (green or yellow) (observe polarity - printing faces R16)
C19 - 100uF  NON-POLAR (larger black electrolytic) (can be installed either way)
C20 - 100uF  NON-POLAR (larger black electrolytic) (can be installed either way)
C21 - 4.7uF small electrolytic (observe polarity!)
C22 - 47pF small yellow MLCC (marked 47 or 470)
C23 - 47pF small yellow MLCC (marked 47 or 470)
C24 - 100uF  NON-POLAR (larger black electrolytic) (can be installed either way)
C25 - 100uF  NON-POLAR (larger black electrolytic) (can be installed either way)

RY1 - 5V Reed Relay 

DRA-36M REV2 printed circuit board.
LS = Component lead spacing - .1 inches = 2.54mm