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SREIO Board issue 1 & 2 Parts List
Important Note
The 1/4” sockets are fitted on the underside of the board. They should be fitted last and soldered
from the top side of the board.
Resistors
All resistors 1% 0.25W metal film resistors.
220R
R2, R3
2K2
R5
3K9
R6
10K
R4
39K
R7
Issue 1: R1 can either be a 0R resistor or simply a wire link made from a resistor lead clipping.
Issue 2: There is no R1 but you need to fit three wire links to positions LK1, LK2 & LK4. The
position LK3 must be left empty.
Capacitors
100nF axial multilayer ceramic
C1
2u2, 63V electrolytic
C2
22uF, 35V electrolytic
C3
Discrete Semiconductors
1N4004 diode
D1
BC550C NPN transistor
Q1, Q2
Interconnects
Switchcraft 114BPCX 1/4” socket IN_A, IN_B, OUT_LEFT, OUT_RIGHT
16 way 2 x 8 IDC box header
IN1
3 way Molex 0.156” header
PSU
16 way 2 x 8 IDC socket
2 off for SREIO to SRE330 interconnect.
16 way 0.05” IDC ribbon cable
Cut to length to fit between SREIO and SRE330 boards
Miscellaneous
Axial leaded ferrite bead
L1, L2, L3, L4, L5, L6, L7, L8
12V or 15V DPDT relay*
RELAY
* This relay is an industry standard type such as TE Connectivity part number 8-1393792-8.