Backup
About the Backup PCB
Backup is an open source PCB design by embeddedalpha, published on GitHub under the MIT license. It is a 2-layer board measuring 34.8 × 30 mm, with 54 components from 31 distinct parts.
Other key parts include the STC3117IJT, LT1129-3.3_SO8, MCP73113_4 and BQ24650RVAR. By type, the board carries 11 capacitors, 11 resistors, 8 connectors, 7 diodes, 4 ICs and 3 transistors.
It belongs with the power & battery and dev boards & breakouts designs in this gallery.
From the project
Repository for PCB Design Projects
Main components on the Backup
Backup bill of materials (BOM)
54 components, 31 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | STC3117IJT | BGA9C40P3X3_146X156X66 | IC1 |
| 1 | LT1129-3.3_SO8 | SOIC-8_3.9x4.9mm_P1.27mm | U1 |
| 1 | MCP73113_4 | MCP73113 | U2 |
| 1 | BQ24650RVAR | QFN50P350X350X100-17N | U3 |
| 3 | DMG3404L | SOT-23 | Q1, Q2, Q3 |
| 8 | Conn_01x01 | Module_Footprint | J1, J2, J3, J4, J5, J6, J7, J8 |
| 1 | 100uF | C_0201_0603Metric | C_VOLT1 |
| 1 | 330uF | C_0201_0603Metric | C_VOLT2 |
| 2 | 22pF | C_0201_0603Metric | Cin1, Cout1 |
| 1 | 5m | R_0201_0603Metric | RS1 |
| 1 | 20m | R_0201_0603Metric | RSR1 |
| 2 | Conn_01x02 | JST_PH_B2B-PH-SM4-TB_1x02-1MP_P2.00mm_Vertical | SLPWR1, SLPWR2 |
| 3 | D | D_0201_0603Metric | D1, D2, D3 |
| 3 | LED | LED_0201_0603Metric | D4, D6, D7 |
| 1 | 1N5822 | D_0201_0603Metric | D5 |
| 1 | 10uH | L_0201_0603Metric | L1 |
| 1 | 330uH | L_0201_0603Metric | L2 |
| 1 | 2.2uF | C_0201_0603Metric | C1 |
| 3 | 1uF | C_0201_0603Metric | C2, C3, C4 |
| 2 | 0.1uF | C_0201_0603Metric | C5, C7 |
Show 11 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 10uF | C_0201_0603Metric | C6, C8 |
| 1 | 4.7uF | C_0201_0603Metric | C9 |
| 1 | 22pF | C_0201_0603Metric | C10 |
| 1 | 220nF | C_0201_0603Metric | C11 |
| 1 | 100K | R_0201_0603Metric | R1 |
| 2 | 499K | R_0201_0603Metric | R2, R3 |
| 1 | 36K | R_0201_0603Metric | R4 |
| 1 | 2 | R_0201_0603Metric | R5 |
| 1 | 10 | R_0201_0603Metric | R6 |
| 2 | R_Small | R_0201_0603Metric | R7, R8 |
| 3 | 1K | R_0201_0603Metric | R9, R10, R11 |
Backup design files
The KiCad project lives in the embeddedalpha/PCB-Design repository on GitHub; these links point at the commit this page was built from.
Backup: common questions
How big is the Backup PCB?
The Backup measures 34.8 × 30 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Backup?
54 components, from 31 distinct parts. The full bill of materials is listed on this page.
Where can I download the Backup design files?
From the embeddedalpha/PCB-Design repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Backup design in my own project?
Yes, under the terms of its MIT license, which embeddedalpha chose for the repository.
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