Yifeng Li bb10062cb4 bom: update BOM 3 years ago
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README.md bb10062cb4 bom: update BOM 3 years ago

README.md

VL670 Development Board - BOM

Don't trust the price data too much.

PCB

Component Quantity Price Total Low Qty. Price
JLCPCB, 4-layer, JLC2313 stack-up, ENIG 1 4.72 23.58
= 4.72 = 23.58

Assembly

Component Quantity Price Total Low Qty. Price
JLCPCB, stencil, etch-polishing 1 0.000 14.48
= 0.000 = 14.48

Capacitors

Component Quantity Price Total Price Total Low Qty. Price
0603 X7R 220nF 8 0.0115 0.092 0.575
0603 NP0 18pF 2 0.0051 0.0102 0.255
0603 X7R 1uF 10 0.0254 0.3048 0.508
0603 X7R 10uF 2 TBD TBD TBD
0603 X7R 470nF 9 0.0198 0.1782 0.99
0402 X7R 470nF 12 0.0124 0.1488 0.62
= 0.7344 = 3.618

Resistors

Component Quantity Price Total Price Total Low Qty. Price
0603 5% 0.5 2 TBD TBD TBD
0603 5% 10K 7 0.0046 0.0322 0.23
0603 5% 470 1 0.0013 0.0013 0.13
0603 1% 11.3K 1 0.0014 0.0014 0.14
0603 1% 1.8M 2 0.0016 0.0032 0.16
0603 5% 200K 1 0.0459 0.0459 0.46
0603 -% 0 6 0.0015 0.0090 0.15
0402 5% 100K 2 0.0117 0.0234 0.59
= 0.4062 = 1.86

Inductors & Ferrites

Component Value Vendor Quantity Price Total Price Total Low Qty. Price
SPH252012H4R7MT 0603 4.7uF Sunlord 1 0.1178 0.1178 1.18
BLM18KG221SN1D 0606 220R/2.2A Murata 1 TBD TBD TBD
= 0.1178 = 1.18

ESD Suppression Diodes

Component Vendor Quantity Price Total Price Total Low Qty. Price
UDFN ESD7104 OnSemi 5 0.0987 0.4935 1.2326 (shortage!)
SOD-523 ESD5B5.0ST1G-N Born Semiconductor 12 0.0368 0.4416 0.74
= 0.9351 = 1.9726

Connectors

Component Value Vendor Quantity Price Total Price Total Low Qty. Price
USB 3 Type-C U262-241N-4BV60 XKB 1 0.5266 0.5266 0.53
USB 3 Type-A U231-091N-4BLRA00-S-1 XKB 1 0.1722 0.1722 0.1722
2.54mm header 01x02, 01x07 - 1 0.0244 0.0244 0.0244
= 0.7232 = 0.7266

Misc

Component Value Vendor Quantity Price Total Price Total Low Qty. Price
0603 Blue LED Blue - 1 0.0294 0.0294 0.59
3225 25MHZ XTAL 25 MHz, Cl=10pF - 1 0.0098 0.0098 0.49
= 0.0392 = 1.08

ICs

Component Vendor Quantity Price Total Price Total Low Qty. Price
QFN-48 VL67X VIA Labs 1 3.0817 3.0817 4.6225
WQFN-30 HD3SS3220 TI 1 1.7907 1.7907 3.4515 (shortage!)
VSSOP-8 74LVC2G66 Nexperia, TI 2 0.2337 0.4674 0.4674
SOIC-8 GD25D05 GigaDevice 1 0.4097 0.4097 2.00
SOT-23-5 TPS2061C-PXLI TI 1 0.7682 0.7682 0.7682
= 6.5177 = 11.3096

Total:

Component Total Price Total Low Qty. Price
PCB 4.72 23.58
Capacitors 0.7344 3.618
Resistors 0.4062 1.86
Inductors 0.1178 1.18
ESD Suppression Diodes 0.9351 1.9726
Connectors 0.7232 0.7266
Misc 0.0392 1.08
ICs 6.5177 11.3096
= 14.196 = 46.50
+ assembly = 60.99

Note: the "Total Low Qty. Price" is only for my personal reference, the method is not rigorous and seems to overestimates the sample board cost. The "true" cost is probably $20.