Vbus switch
About the Vbus switch PCB
Vbus switch is an open source PCB design by greatscottgadgets, published on GitHub under the GPL-2.0 license. It is a 4-layer board measuring 74 × 85 mm, with 109 components from 32 distinct parts.
Other key parts include the PAC1954T-E/J6CX, FUSB302BMPX and AP7361EA-33FGE-7. By type, the board carries 54 resistors, 17 connectors, 16 capacitors, 12 transistors, 7 diodes and 3 ICs.
From the project
miscellaneous Great Scott Gadgets projects
Main components on the Vbus switch
Vbus switch bill of materials (BOM)
109 components, 32 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | PAC1954T-E/J6CX PAC195X-1-WLCSP Microchip | WLCSP-16_2.225x2.170mm_Layout4x4_P0.5mm | U1 |
| 1 | FUSB302BMPX onsemi | WQFN-14-1EP_2.5x2.5mm_P0.5mm_EP1.45x1.45mm | U2 |
| 1 | AP7361EA-33FGE-7 AP7361EA-33 Diodes Inc. | DFN-8-1EP_3x3mm_P0.65mm_EP1.55x2.4mm | U3 |
| 3 | BC847BS 2NPN Yangzhou Yangjie | SOT-363_SC-70-6 | Q1, Q7, Q10 |
| 1 | BCM857BS 2PNP Yangzhou Yangjie | SOT-363_SC-70-6 | Q2 |
| 8 | PJA3441_R1_00001 PMOS Panjit | SOT-23-3 | Q3, Q4, Q5, Q6, Q8, Q9, Q11, Q12 |
| 4 | BANANA | Banana_Jack_2Pin | J1, J2, J3, J13 |
| 3 | U262-161N-4BVC11 USB_C XKB | USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J4, J5, J17 |
| 1 | C42411 USB_A Jing Extension of the Electronic Co. | USB_A_Kycon_KUSBXHT-SB-AS1N-B30-NF_Horizontal | J6 |
| 8 | 01x02 | PinHeader_1x02_P2.54mm_Vertical | J7, J8, J9, J10, J12, J14, J15, J16 |
| 1 | Conn_02x06_Top_Bottom | PinHeader_2x06_P2.54mm_PMOD | J11 |
| 2 | BZX884-B4V7,315 4.7±2% Nexperia | DFN1006-2 | D1, D7 |
| 2 | BZX884-B18,315 18±2% Nexperia | DFN1006-2 | D2, D6 |
| 2 | PMEG10010ELRX D Nexperia | D_SOD-123F | D3, D5 |
| 1 | BZX884-B6V2,315 6.2±2% Nexperia | DFN1006-2 | D4 |
| 8 | C | C_0402_1005Metric | C1, C2, C3, C4, C5, C6, C7, C10 |
| 6 | 390pF | C_0402_1005Metric | C8, C9, C13, C14, C15, C16 |
| 1 | CL10A225KP8NNNC 2.2uF Samsung | C_0603_1608Metric | C11 |
| 1 | GENERIC-CAP-0603-1uF 1uF | C_0603_1608Metric | C12 |
| 3 | 18.7k±1% | R_0402_1005Metric | R1, R29, R51 |
Show 12 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 22k±1% | R_0402_1005Metric | R2, R30 |
| 8 | 33k | R_0402_1005Metric | R3, R15, R17, R22, R33, R35, R44, R45 |
| 9 | 10k | R_0402_1005Metric | R4, R19, R21, R24, R25, R36, R37, R38 +1 |
| 6 | 0 | R_0402_1005Metric | R5, R10, R11, R23, R26, R47 |
| 6 | 5.1k | R_0402_1005Metric | R6, R7, R8, R9, R52, R53 |
| 5 | R | R_0402_1005Metric | R12, R16, R49, R50, R54 |
| 5 | 2.2k | R_0402_1005Metric | R13, R20, R39, R40, R42 |
| 2 | 820k | R_0402_1005Metric | R14, R18 |
| 2 | 1.8k | R_0402_1005Metric | R27, R28 |
| 4 | ERJ-3BWFR020V 0.02±1% Panasonic | R_0603_1608Metric_Current_Sense | R31, R32, R34, R46 |
| 1 | 20k | R_0402_1005Metric | R41 |
| 1 | 58.3k±1% | R_0402_1005Metric | R48 |
Vbus switch design files
The KiCad project lives in the greatscottgadgets/misc repository on GitHub; these links point at the commit this page was built from.
Vbus switch: common questions
How big is the Vbus switch PCB?
The Vbus switch measures 74 × 85 mm, has 4 copper layers and is 4.69 mm thick.
How many components are on the Vbus switch?
109 components, from 32 distinct parts. The full bill of materials is listed on this page.
Where can I download the Vbus switch design files?
From the greatscottgadgets/misc repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Vbus switch design in my own project?
Yes, under the terms of its GPL-2.0 license, which greatscottgadgets chose for the repository.
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