Data Sheet

Page 114
nRF51822 Product Specification v3.1
11.8.3.1 Bill of Materials
Table 101 CFAC WLCSP with DC/DC converter setup
Designator Value Description Footprint
B1
BAL-NRF02D3
ST Microelectronics, 50  balun transformer for
2.45 GHz ISM
BAL-ST-WLCSP
C1, C2, C13, C14
12 pF
Capacitor, NP0, ±2%
0402
C3
2.2 nF
Capacitor, X7R, ±10%
0402
C7
4.7 F
Capacitor, X5R, ±10%
0603
C8, C11
100 nF
Capacitor, X7R, ±10%
0402
C9
1.0 nF
Capacitor, X7R, ±10%
0402
C10
47 nF
Capacitor, X7R, ±10%
0402
C12
1.0 F
Capacitor, X7R, ±10%
0603
L4
10 H
Chip inductor, I
DC,min
= 50 mA, ±20%
0603
L5
15 nH
High frequency chip inductor ±10%
0402
U1
nRF51822-CFAC
RF SoC
BGA62C40P9X9_383X350X55
X1
16 MHz
Crystal SMD 2520, 16 MHz, 8 pF, ±40 ppm
2.5 x 2.0 mm
X2
32.768 kHz
Crystal SMD FC-135, 32.768 kHz, 9 pF, ±20 ppm
FC-135