4 layers99 × 63.5 mm
KVM Project
duplow/setup-kvm-3
Chaveador KVM para até 3 PCs/aparelhos diferentes conectados simultaneamente, podendo alternar entre si.
49 partsMIT
4 layers30.2 × 49.4 mm
Bifrost
YashKarthik/bifrost1- Size
- 30.2 × 49.4 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 68
- Nets
- 104
- Pads
- 323
- Tracks, vias
- 756, 88
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 23 May 2025
- Updated
- 3 Jun 2025
Overview
Bifrost is an open-source printed circuit board by YashKarthik, from the YashKarthik/bifrost repository on GitHub. It is a 4-layer board of 30.2 × 49.4 mm with 68 parts on 104 nets, routed with 756 tracks and 88 vias.
It is built around the 74LVC1G125, HD3SS215IRTQR and TPD4E05U06DQAR, with the AP2112K-3.3, MAX77958CEWV+T and DLW21SN121SQ2L among its other parts. Its parts include 32 capacitors, 14 resistors and 8 ICs.
Main components
6
74LVC1G125
SOT-353SOT-353 Buffers, Drivers, Receivers, Transceivers ROHSWuxi I-core ElecBuffers, Drivers, Receivers, Transceivers
HD3SS215IRTQR
QFN-56-EP(8x8)-40℃~+85℃ 3.2mA 3V~3.6V 6Gbps I2C QFN-56-EP(8x8) Interface - Specialized ROHSTexas InstrumentsInterface - Specialized
TPD4E05U06DQAR
USON-10-40℃~+125℃ 0.5pF 10nA 14V 2.5A@8/20us 40W@8/20us 5.5V 6.5V ESD Four channels IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 Unidirectional USON-10(1x2.5) ESD and Surge Protection (TVS/ESD) ROHSTexas InstrumentsESD Protection Devices
AP2112K-3.3
SOT253.3V 600mA CMOS Low Dropout Linear Regulator with EnableDiodes IncorporatedUncategorisedMAX77958CEWV+T
WLP-30(2.7x3.1)-40℃~+85℃ WLP-30(2.7x3.1) USB PD ROHSMaxim Integrated (Analog Devices)USB PD
DLW21SN121SQ2L
SMD-4P,2x1.2mm-40℃~+85℃ 10MΩ 120Ω@100MHz 125V 2 300mΩ 370mA 50V SMD-4P,2x1.2mm Common Mode Filters ROHSMurataCommon Mode Filters
README
README.mdUSB to DisplayPort dongle
thing to confirm:
- if i need a different CC/PD controller for active negatiotion of DP alt mode.
- how HPD signals go back to host.
- caps, esd etc
Parts
68| Qty | Value | Footprint | References |
|---|---|---|---|
| 18 | 0.1 uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C2, C3, C4, C5, C6, C7, C10, C11, C12, C13, C15, C17, C18, C19, C20, C31 +2 |
| 11 | 1 uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C14, C16, C21, C22, C24, C25, C26, C27, C29, C32 |
| 6 | 1M | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2, R6, R7, R8, R9 |
| 4 | DLW21SN121SQ2L | DLW21SN121SQ2L:DLW21SN121SQ2L | FL1, FL2, FL3, FL4 |
| 2 | 100K | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R4, R5 |
| 2 | 2.2k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R11, R12 |
| 2 | 27 pF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C28, C30 |
| 2 | 47R | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R13, R14 |
| 2 | TPD4E05U06DQAR | TPD4E05U06DQAR:DQA0010A | U7, U8 |
| 1 | 2.2 uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C23 |
| 1 | 200k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R10 |
| 1 | 3V3 | TestPoint:TestPoint_Pad_D3.0mm | TP9 |
| 1 | 5M | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3 |
| 1 | 74LVC1G125 | Package_TO_SOT_SMD:SOT-353_SC-70-5_Handsoldering | U5 |
| 1 | AP2112K-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U2 |
| 1 | CC1 | TestPoint:TestPoint_Pad_D3.0mm | TP3 |
| 1 | CC2 | TestPoint:TestPoint_Pad_D3.0mm | TP4 |
| 1 | DIR | TestPoint:TestPoint_Pad_D3.0mm | TP7 |
| 1 | DisplayPort | XDPF-0205-20S:DISPLAYPORT_FEMALE_XDPF-0205-20S | U1 |
| 1 | HD3SS215IRTQR | HD3SS215IRTQR:RTQ0056B | U3 |
| 1 | HPD | TestPoint:TestPoint_Pad_D3.0mm | TP8 |
| 1 | INTB | TestPoint:TestPoint_Pad_D3.0mm | TP6 |
| 1 | MAX77958CEWV+T | MAX77958CEWV-T:21-100339_W302B3&plus_1_ADI | U6 |
| 1 | SCL | TestPoint:TestPoint_Pad_D3.0mm | TP1 |
| 1 | SDA | TestPoint:TestPoint_Pad_D3.0mm | TP2 |
| 1 | TPD8S300ARUKR | TPD8S300ARUKR:WQFN20_RUK_TEX | U4 |
| 1 | VBUS | TestPoint:TestPoint_Pad_D3.0mm | TP5 |
| 1 | ~ | USB-3-C-MALE:USB-C-SMD_U261-241N-4BS2SS | USB1 |
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Questions
How big is the Bifrost PCB?
It measures 30.2 × 49.4 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Bifrost use?
68 parts, built around the 74LVC1G125, HD3SS215IRTQR, TPD4E05U06DQAR and AP2112K-3.3. 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 Bifrost KiCad files?
From the YashKarthik/bifrost repository on GitHub, at the commit this page was made from: the board is bifrost.kicad_pcb and its schematic bifrost.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Bifrost design in my own project?
Its repository states no licence, so its author keeps all rights: ask YashKarthik before reusing the design.