QRP Labs QDX, Assembly And Operating Manual

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Semiconductors
Qty Description Component numbers
5 SMD: 1N4148 D7, 8, 9
6 1N4007 diode D1, 2, 3, 4, 5, 6
1 SMD: AMS1117-3.3 IC1
1 SMD: AMS1117-5.0 IC2
2 SMD: FST3253 IC3, 4
1 SMD: 74ACT08 IC5
1 SMD: 24C64 IC6
1 SMD: LM4562 IC7
1 STM32F401RBT6 IC8
1 AK5386 IC9
1 SMD: Si5351A U1
1 SMD: BSS84 MOSFET Q1
5 SMD: BSS123 MOSFET Q2, 3, 4, 5, 6
4 BS170: TO92 MOSFET Q8, 9, 10, 11
1 SMD: BC857 PNP T3
1 SMD: BC817 NPN T4
1 SMD: Red LED DIAG
1 3mm Red LED PANEL
Inductors
Qty Description Component numbers
6 SMD: 47uH L11, 13, 15, 16, 17, 18
4 47uH radial inductor L1, 5, 7, 9 (replace SMD inductors, see text)
1 T37-2 toroid (red), 2.40 uH (24t) L2
1 T37-2 toroid (red), 2.88 uH (26t) L6
1 T37-6 toroid (yel), 1.06 uH (18t) L3
1 T37-6 toroid (yel), 393 nH (11t) L4
1 T37-6 toroid (yel), 1.20 uH (20t) L8
1 T37-6 toroid (yel), 525 nH (13t) L10
1 T50-2 toroid – tapped, see text L12
1 FT37-43 10t L14
1 BN43-202 binocular, 3:3 T1
1 FT37-43 10t trifilar T2
QDX assembly Rev 1.00
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