Geiger Sensor 1 Parts List

Reference Part Package
C1 100n 0805
C2 100n 0805
C3 22p 0805
C4 22p 0805
C5 10n 1kV 1206
C6 10n 1kV 1206
C7 330p 0805
C8 100n 0805
D1 US1J SMA
L1 15mH -
P1 ISP pin header
P2 USB usb mini B
P3 PLUS fuse holder clip
P4 MINUS fuse holder clip
Q1 PBHV8540Z SOT223
Q2 MMBT3904 SOT23
R1 10k 0805
R2 1.2k 0805
R3 2.2k 0805
R4 1.2M 0805
R5 1.2M 0805
R6 1.2M 0805
R7 1.2M 0805
R8 9.1k 0805
R9 10k 0805
R10 820 0805
R11 1M 0805
R12 1.5M 0805
R13 1.5M 0805
R14 1.5k 0805
R15 100k 0805
R16 820 0805
R17 1.5M 0805
U1 ATMEGA48SMT TQFP 32pin
U2 PL2303 SSOP
X1 7.3728MHz HC-49S

C5,C6

Capacitor 10nF 1kV, 1206 package, f.ex. this one.

D1

Part VRRM IF Package Source
UF4007 1000V 1A DO-41 -
STTH1R06 600V 1A SMA -
US1J 600V 1A SMA ali
US1K 800V 1A SMA ali
US1M 1000V 1A SMA ali

L1

inductor 15mH (maybe less???)

P2

socket USB mini B, f.ex. this one.

P3,P4

Fuse holder clips for 6*30mm fuses.

Q1

High voltage transistor.

Part VCES VCEO IC Package Source
STX13005 700V 400V 1.5A TO-92 -
STD13003 700V 400V 1.5A DPAK (TO-252) -
BULB39D 850V 450V 4A D2PAK ali
PBHV8540Z 500V 500V 500mA SOT223 rs-components
PMBTA45 500V ? 150mA SOT23 farnell
FMMT459TA 500V 450V 150mA SOT23 ali

Q2

General purpose transistor.

Part VCEO IC hfe Package Source
2N4401 40V 600mA >20 TO-92 -
MMBT3904 40V 200mA >30 SOT23 ali

U1

Atmel AVR ATmega*8 microcontroller.

Part Flash Package Source
ATmega48 4kB TQFP 32pin ali
ATmega88 8kB TQFP 32pin ali
ATmega168 16kB TQFP 32pin ali
ATmega328 32kB TQFP 32pin ali

U2

PL2303 USB serial converter in SSOP 28pin package, f.ex. this one. Maybe better order from known good sources (f.ex. farnell) since some of these parts are chinese clones which may make troubles with WinDoS.

X1

7.3728MHz (64 * 115200) crystal in HC-49S package, f.ex. this one.