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Updated BOM document for the GoodWatch30. #100

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Travis Goodspeed 2018-08-02 15:40:54 -04:00
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hardware/goodwatch30/BOM.txt
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@ -1,7 +1,10 @@
Howdy y'all,
This is a textfile BOM for the GoodWatch30. Some substitutions will
be handy, allowing for supplier availability.
be handy, allowing for supplier availability. In general, we use the
same parts as the GoodWatch20 series, except that the combined balun
and bandpass filter has been replaced with separate components, to
allow for a choice of bands.
Base parts, required for all watches.
@ -15,23 +18,17 @@ C4 GRJ155R60J106ME11D 490-13211-1-ND 0402 1 10uF
C5 GRM033R60J474KE90D 490-10409-1-ND 0201 1 0.47uF
Y1 ABS07-120-32.768KHZ-T 535-11937-1-ND SMDXTAL 1 32.768kHz6pF
Radio parts, only required for the optional SubGHz radio.
Radio parts, only required for the optional SubGHz radio. Choose one
of the two options for U2, but not the other.
R2 RC0201FR-0756KL YAG2732CT-ND 0201 1 56k, 1%
Y2 FA-128.26.0000MF10Z-W5 SER4186CT-ND 1 26MHz SMD Xtal, 12pF
A1 ANT1204F002R0433A 311-1570-1-ND 1 430MHz Chip Antenna, you probably won't populate this.
B1 0433BM15A0001E 712-1540-1-ND 1 430MHz Balun/Filter
C6,C7 GRM0335C1E180JA01D 490-9659-1-ND 0201 2 18pF (19pF are unavailable.)
C8,C9 02016D104KAT2A 478-5266-1-ND 0201 2 0.1uF (Same as C2,C3.)
L1 BLM15HG102SN1D 490-3999-1-ND 0402 1 Ferrite Bead
U2 0500LP15A500 712-1117-1-ND 0805 1 500MHz Low Pass Filter (70cm usage)
U2 0915LP15B02 712-1122-1-ND 0805 1 915MHz Low Pass Filter (33cm usage)
U3 B0310J50100AH 1173-1050-1-ND 0805 1 300MHZ-1GHz Balun
C10 GRM0335C1H221JA01D 490-11316-1-ND 0201 1 220pF DC Bypass Capacitor
For conveniece, there is a readymade BOM on Digikey that includes a
minimum of 10 units of each part with additional quantities on cheaper
parts. It might be slightly out of date.
http://www.digikey.com/short/q87ncn
A similar BOM from Mouser.
https://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=6053f78fb3