DocID024383 Rev 1
51/56
UM1619
Schematic diagrams and bill of material
1
L2
220 uH
10%
0.24 A
Power inductor
SMD
EPCOS
2
Q1,Q2
BC857
PNP small signal
transistor
SMD
SOT23
Any
1
R1
0R-NM
Not mounted
SMD 1206
1
R2
750 R
1%
1/10 W
Metal film
resistor
SMD 0603
any
2
R3,R4
82 R
1%
1/10 W
Metal film
resistor
SMD 0603
any
7
R5,R22,R23,
R24,R25,R2
6,R27
10 k
1%
1/10 W
Metal film
resistor
SMD 0603
Any
3
R6,R7,R19
1 K
1%
1/10 W
Metal film
resistor
SMD 0603
Any
1
R8
2.7 K
1%
1/10 W
Metal film
resistor
SMD 0603
Any
1
R9
68 K
1%
1/10 W
Metal film
resistor
SMD 0603
Any
1
R10
15 K
1%
1/10 W
Metal film
resistor
SMD 0603
Any
1
R11
1K1
1%
1/10 W
Metal film
resistor
SMD 0603
Any
1
R12
390 R
1%
1/10 W
Metal film
resistor
SMD 0603
Any
1
R13
2K7
1%
1/10 W
Metal film
resistor
SMD 0603
Any
1
R14
13 K
1%
1/10 W
Metal film
resistor
SMD 0603
Any
1
R15
82 K
1%
1/10 W
Metal film
resistor
SMD 0603
Any
1
R16
4K7
1%
1/10 W
Metal film
resistor
SMD 0603
Any
5
R17,R30,R3
1,R32
0R
1%
1/10 W
Metal film
resistor
SMD 0603
Any
3
R21,R28,R2
9,R33
N.M.
Not mounted
SMD 0603
1
R18
1K8
1%
1/10 W
Metal film
resistor
SMD 0603
Any
1
R20
2K49
1%
1/10 W
Metal film
resistor
SMD 0603
Any
1
T1
TRAFO 1:1
Transformer 1:1
Through
hole
Wurth Elektr.
Table 1. Bill of material (continued)
Qty
Ref.
Part / value Tol. %
Voltage /
current
Watts
Technology
information
PA
Manufact.