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Sequencer Pot & Switch Board issue 1
Resistors
All single resistors are surface mount, size 0805 (or metric 2012) 1% 125mW metal film.
120R
R19, R36, R20, R35, R7, R16, R13, R3
220R
R34, R40
470R
R21, R15, R17, R11, R1, R39, R29, R5
10K
R37
12K
R31, R42
51K
R9, R10
100K
R6, R8, R4, R32, R41, R2, R38, R26, R23, R24, R25, R33, R22, R30, R12,
R14, R27, R28, R18
100K x 4 5-pin bussed* resistor network
RN1, RN4
220K x 8 9-pin bussed* resistor network
RN2, RN3
* A bussed or commoned resistor network is a single component that contains a number of 2%
resistors connected together. The commoned pin is labelled with a dot and must be put into the
board so that the dot lines up with the square pad on the PCB.
Capacitors
The following capacitors are surface mount, size 0805 (or metric 2012) multilayer ceramic,
dielectric C0G (or NP0), working voltage 50V, tol/-5%.
47pF
C6, C11, C9, C2
The following capacitors are surface mount, size 0805 (or metric 2012) multilayer ceramic,
dielectric X7R, working voltage 50V, tol/-5%.
100nF
C8, C7, C3, C10, C5, C4, C1
Discrete Semiconductors
The following devices are surface mount parts.
1N4148WS signal diode
D1 – D34
BC850 NPN transistor
Q19, Q20, Q10, Q17, Q16, Q15, Q7, Q4, Q6, Q9, Q23, Q14, Q3, Q1,
Q18
BC860 PNP transistor
Q2, Q8, Q13, Q22, Q11, Q12, Q5, Q21
8