

Solo A
Hardware sources for Solo 1
- Size
- 46.3 × 15 mm
- Copper layers
- 4
- Thickness
- 0.8 mm
- Parts
- 48
- Nets
- 83
- Pads
- 252
- Tracks, vias
- 806, 74
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 30 Dec 2018
- Updated
- 23 Jan 2020
Overview
Solo A is an open-source printed circuit board by solokeys, from the solokeys/solo-hw repository on GitHub, published under the CC-BY-SA-4.0 licence. It is a 4-layer board of 46.3 × 15 mm with 48 parts on 83 nets, routed with 806 tracks and 74 vias.
It is built around the LPC55S28JEV98K, GD25Q16CEIGR and ESDZV5-1BF4, with the BAT30F4 and FSUSB42MUX among its other parts. Its parts include 15 capacitors, 11 resistors, 5 diodes, 2 switches and 2 inductors. It belongs with the NXP (LPC, Kinetis, i.MX RT) boards of this library.
Main components
5LPC55S28JEV98K
VFBGA-98-40℃~+105℃ 1.8V~3.6V 150MHz 16bit 256KB 32 Bit 512KB 64 ARM Cortex-M33 Built-in+External FLASH Power-on reset (POR)、Undervoltage detection (BOR/LVD/LVR/LVI)、Built-in general-purpose timer、Hardware CRC、Calendar function、Built-in temperature sensor、True random number generator (TRNG)、Storage encryption、Window watchdog (WWDG) VFBGA-98 Microcontrollers (MCU/MPU/SOC) ROHSNXP SemiconductorsMicrocontrollers (MCU/MPU/SOC)GD25Q16CEIGR
USON-8(2x3)-40℃~+85℃ 100,000 cycles 120MHz 16Mbit 1uA 2.7V~3.6V 20 Years 250ms@(64KB) 600us SPI USON-8(2x3) NOR FLASH ROHSGigaDevice Semicon BeijingNOR FLASHESDZV5-1BF4
DFN0603-20.26pF 125W@8/20us 200nA 25V 5V 9.5V ESD IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 DFN0603-2 ESD and Surge Protection (TVS/ESD) ROHSLeiditechESD And Surge Protection (TVS/ESD)BAT30F4
0201Schottky DiodesTECH PUBLICFSUSB42MUX
MSOP-10-40℃~+85℃ 12ns 13ns 2 250ps 2:1 3.7pF 3.9Ω 3V~4.4V 720MHz MSOP-10 Analog Switches, Multiplexers ROHSonsemiAnalog Switches, Multiplexers
README
README.mdSolo HW
The HW sources for Solo, the open source security token.
Note that master may be "broken" at times, so you should check using one of the releases first.
For schematic, BOM, and gerber information, see the releases.
License
Solo is fully open source. All hardware, unless otherwise noted, is dual licensed under CERN OHL and CC BY-SA.
You may use Solo under the terms of either the CERN OHL 1.2 license or the CC BY-SA 4.0 license.
1.2V Solo hardware
Kickstarter release.


USB-A

USB-C

2.1V Solo Tap hardware
Also the hardware used for all future Solo models.


USB-A

USB-C

Parts
48| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 4.7u | solo:0201_C | C1, C3, C5, C6, C7, C8, C9, C10, C11, C12 |
| 5 | ESDZV5-1BF4 | solo:0201_R | Z1, Z2, Z3, Z4, Z5 |
| 4 | BAT30F4 | solo:0201_Polar | D3, D4, D5, D6 |
| 3 | 10k | solo:0201_R | R4, R6, R8 |
| 3 | 1M | solo:0201_R | R5, R7, R9 |
| 2 | 100nF | solo:0201_C | C14, C15 |
| 2 | 10uF | Capacitor_SMD:C_0402_1005Metric | C13, C17 |
| 2 | 30R | solo:0201_R | R10, R11 |
| 2 | DNP | solo:0201_C | CX1, CY1 |
| 1 | 180R | solo:0201_R | R1 |
| 1 | 47pF | solo:0201_C | C16 |
| 1 | 4u7H | Inductor_SMD:L_0603_1608Metric | L2 |
| 1 | 50k | solo:0201_R | R3 |
| 1 | 5k | solo:0201_R | R2 |
| 1 | ARM_DEBUG | solo:TC2030-IDC-NL | D1 |
| 1 | AS3956-CSP | solo:AS3956_CSP | N1 |
| 1 | FSUSB42 | solo:FSUSB42 | SW1 |
| 1 | GD25Q16CEIGR | solo:FLASH_2x3_USON8 | F1 |
| 1 | LED_RGBA | solo:RGB_LED_606 | L1 |
| 1 | LPC55S28JEV98K | solo:BGA98C50P13X13_700X700X97N | U1 |
| 1 | TLV742p | solo:Texas_X2SON-4_1x1mm_P0.65mm | T1 |
| 1 | TOP_A | solo:top-A | TOP1 |
| 1 | USB | solo:USB-A | S2 |
| 1 | side_buttons | solo:side_buttons | caps1 |
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Questions
How big is the Solo A PCB?
It measures 46.3 × 15 mm and has 4 copper layers, 0.8 mm thick.
What parts does the Solo A use?
48 parts, built around the LPC55S28JEV98K, GD25Q16CEIGR, ESDZV5-1BF4 and BAT30F4. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Solo A KiCad files?
From the solokeys/solo-hw repository on GitHub, at the commit this page was made from: the board is kicad/solo-A.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Solo A design in my own project?
Its repository publishes it under the CC-BY-SA-4.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

