4 layers99.5 × 80 mm
Xt8086 beta
rh1tech/frank-lab
FRANK Board Laboratory (work-in-progress board prototopyes)
258 parts4GPL-3.0
4 layers210 × 120 mm
Frank zx
rh1tech/frank-lab4FRANK Board Laboratory (work-in-progress board prototopyes)
- Size
- 210 × 120 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 273
- Nets
- 224
- Pads
- 1,042
- Tracks, vias
- 1,751, 315
- Pours
- 12
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 22 Apr 2026
- Updated
- 6 Nov 2026
Overview
Frank zx is an open-source printed circuit board by rh1tech, from the rh1tech/frank-lab repository on GitHub, published under the GPL-3.0 licence. It is a 4-layer board of 210 × 120 mm with 273 parts on 224 nets, routed with 1,751 tracks and 315 vias.
It is built around the RP2350B, SY8089AAAC and TPD4S012DRYR-TP, with the CH217K, AO3401A and APS6404L-3SQR-ZR among its other parts. Its parts include 64 capacitors, 49 switches, 47 resistors, 42 diodes and 16 ICs. It belongs with the ESP8266 and RP2350 boards of this library.
Main components
12
RP2350B
QFN-80-EP(10x10)48 Power-on reset (POR)、Watchdog reset、External pin reset (NRST)、Built-in general-purpose timer、Integrated LDO、True random number generator (TRNG)、Hardware ECC check、Independent watchdog (IWDG) QFN-80-EP(10x10) Microcontrollers (MCU/MPU/SOC) ROHSRaspberry PiMicrocontrollers (MCU/MPU/SOC)
SY8089AAAC
SOT-23-5-40℃~+85℃@(TA) 1 1MHz 2.7V~5.5V 2A 55uA Adjustable Buck Buck Built-in Yes SOT-23-5 DC-DC Converters ROHS矽力杰silergyDC-DC Converters
TPD4S012DRYR-TP
DFN1510-60.35pF、11pF 100nA 10V 3A@8/20us 5.5V、15V 80W@8/20us 9V、24V IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 DFN1510-6 ESD and Surge Protection (TVS/ESD) ROHSTECH PUBLICESD And Surge Protection (TVS/ESD)
CH217K
SOT-23-6-40℃~+85℃ 1 2.7A 2.7V~5.5V 70mΩ Active Low Load Switch Undervoltage Protection(UVP)、Overcurrent Protection(OCP)、Over temperature protection(OTP) SOT-23-6 Power Distribution Switches ROHSWCH (Nanjing Qinheng Microelectronics)Power Distribution Switches
AO3401A
SOT-231 P-Channel 14nC@10V 30V 47mΩ@10V、60mΩ@4.5V、85mΩ@2.5V 4A 55pF 645pF 80pF 900mV SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
APS6404L-3SQR-ZR
USON-8LUSON-8L PSRAM ROHSAP MemoryDRAM
CD4069UBM
SOIC-14-55℃~+125℃ 1 1V~2.5V 1uA 3.4mA 3.4mA 3V~18V 4000B Series 4V~12.5V 50ns@15V,50pF 6 SOIC-14 Inverters ROHSTexas InstrumentsInverters
CH334F
QFN-24(4x4)-40℃~+85℃ 0.4mA 3.3V、5V 4 480Mbps 85mA Hub I2C USB 2.0 QFN-24(4x4) USB HUB Controllers ROHSWCH (Nanjing Qinheng Microelectronics)USB HUB Controllers
TS3USB221RSER-TP
QFN-10L(1.5x2)-40℃~+85℃ 13uA 2.5V~5.5V 2/4 200ps@3.3V,0pF Power-off protection、Break-before-make function、Overcurrent Protection Single Supply QFN-10L(1.5x2) Signal Switches, Multiplexers, Decoders ROHSTECH PUBLICSignal Switches, Multiplexers, Decoders
1N4148W
SOD-123150mA 1A 1V@50mA 1uA@75V 400mW 4ns 75V Independent SOD-123 Switching Diodes ROHSSTMicroelectronicsSwitching Diodes
1N5819WS
SOD-3231 Independent 1A 25A 40V 500uA@40V 600mV@1A SOD-323 Schottky Diodes ROHSGuangdong HottechSchottky DiodesSK12D07VG3NS
插件-20℃~+70℃ 30V PC Pin Rectangular Columnar SPDT Through Hole 插件 Slide Switches ROHSC&KSlide Switches
README
README.mdFRANK Lab
Official page: frank.rh1.tech — hub for all FRANK boards and firmware.
Experimental and work-in-progress boards for the FRANK hardware emulation platform.
WARNING: These boards are untested and unreleased. Do NOT order PCBs from this repository. They may contain errors, incomplete routing, or unverified component footprints. Use at your own risk.
For production-ready boards, see the main frank repository.
Boards in this repository
| Board | Status |
|---|---|
frank_air | Work in progress |
frank_core2 | Work in progress — pulled back from the released set |
frank_pga2 | 1.00 ready for fab, untested — dual PGA2350 (Core2 link), 2-layer, hand-solderable |
dino_z80 | Work in progress — pulled back from the released set |
xt8086_beta | Work in progress — pulled back from the released set |
frank_next_proto | Prototype — superseded by FRANK Next, released |
Released from this repository
These boards have graduated to rh1tech/frank and are no longer maintained here:
| Was | Now |
|---|---|
frank_next | hardware/frank_next — the flagship |
frank_core2_proto | hardware/frank_core2_proto — published as a prototype |
frank_core2u | hardware/frank_core2u |
oldskoolfrank | hardware/oldskool |
Each carries its KiCad project, gerbers, fabrication docs, 3D-printable case and an assembly guide in English and Russian. Board pages with full specifications are on frank.rh1.tech.
Author
Mikhail Matveev — xtreme@rh1.tech — rh1.tech
License
© 2026 Mikhail Matveev, xtreme@rh1.tech
GPL v3. See LICENSE.
Parts
273| Qty | Value | Footprint | References |
|---|---|---|---|
| 40 | 1N4148W | FRANK:D_SOD-123 | D00, D01, D02, D03, D04, D05, D06, D07, D08, D09, D10, D11, D12, D13, D14, D15 +24 |
| 40 | MX | FRANK:SW_Cherry_MX_1.00u_PCB | K00, K01, K02, K03, K04, K05, K06, K07, K08, K09, K10, K11, K12, K13, K14, K15 +24 |
| 32 | 100nF | FRANK:C_0603_1608Metric | C1, C2, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C40, C102, C103 +16 |
| 16 | 10uF | FRANK:C_0603_1608Metric | C39, C45, C47, C48, C53, C76, C78, C80, C82, C84, C86, C87, C88, C96, C98, C101 |
| 12 | 10K | FRANK:R_0603_1608Metric | R4, R5, R28, R29, R30, R31, R32, R35, R36, R37, R59, R60 |
| 7 | 100K | FRANK:R_0603_1608Metric | R45, R46, R58, R62, R65, R66, R70 |
| 6 | 100R | FRANK:R_0603_1608Metric | R10, R11, R12, R13, R16, R17 |
| 6 | 4.7K | FRANK:R_0603_1608Metric | R33, R34, R38, R39, R44, R61 |
| 6 | MountingHole | FRANK:MountingHole_2.5mm_Pad_Via | H1, H2, H3, H4, H5, H6 |
| 5 | 33R | FRANK:R_0603_1608Metric | R6, R18, R19, R20, R21 |
| 4 | 1K | FRANK:R_0603_1608Metric | R7, R9, R57, R71 |
| 4 | 4.7uF | FRANK:C_0603_1608Metric | C3, C4, C8, C9 |
| 4 | TPD4S012DRYR | FRANK:TPD4S012DRYR | U14, U21, U23, U25 |
| 3 | 1uF | FRANK:C_0603_1608Metric | C51, C52, C85 |
| 3 | 676430910 | FRANK:USB_A_Short | J12, J13, J14 |
| 3 | CH217K | FRANK:SOT-23-6 | U22, U24, U27 |
| 2 | 100uF | FRANK:C_1206_3216Metric | C43, C44 |
| 2 | 100uF | FRANK:CP_Elec_6.3x6.0 | C72, C73 |
| 2 | 12 MHz | FRANK:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1, Y4 |
| 2 | 12pF | FRANK:C_0603_1608Metric | C89, C90 |
| 2 | 15pF | FRANK:C_0603_1608Metric | C5, C6 |
| 2 | 1N5819WS | FRANK:D_SOD-323 | D1, D40 |
| 2 | 270R | FRANK:R_Array_4x0603 | RN1, RN2 |
| 2 | 27R | FRANK:R_0603_1608Metric | R14, R15 |
| 2 | 330R 2A | FRANK:L_0805_2012Metric | L3, L5 |
| 2 | 5.1K | FRANK:R_0603_1608Metric | R52, R53 |
| 2 | SK12D07VG3NS | FRANK:Switch_Slide_SK12D07VG3NS_PWR | S8, S9 |
| 1 | +1V1 | FRANK:TestPoint_Pad_D1.2mm | TP12 |
| 1 | +1V8 | FRANK:TestPoint_Pad_D1.2mm | TP20 |
| 1 | +3V3 | FRANK:TestPoint_Pad_D1.2mm | TP11 |
| 1 | +5V_BUCK | FRANK:TestPoint_Pad_D1.2mm | TP17 |
| 1 | +5V_SPK | FRANK:TestPoint_Pad_D1.2mm | TP21 |
| 1 | 0R | FRANK:R_0603_1608Metric | R8 |
| 1 | 104031-0811 | FRANK:MicroSD_SMD_Long | J6 |
| 1 | 2.2uH | FRANK:L_Cenker_CKCS3015 | L6 |
| 1 | 22K | FRANK:R_0603_1608Metric | R63 |
| 1 | 22pF | FRANK:C_0603_1608Metric | C91 |
| 1 | 3.3µH | FRANK:L_AOTA-B201610_2.0x1.6mm | L1 |
| 1 | 330R | FRANK:R_0603_1608Metric | R72 |
| 1 | AO3401A | FRANK:SOT-23-3L_AOS | U16 |
| 1 | APS6404L-3SQR-ZR | FRANK:PSON50P200X300X50-9N | U1 |
| 1 | Blue | FRANK:LED_0603_1608Metric | LD2 |
| 1 | CD4069UBM | FRANK:SOIC127P600X175-14N | U28 |
| 1 | CH334F | FRANK:QFN-24-1EP_4x4mm_P0.5mm_EP2.7x2.7mm | U19 |
| 1 | DC3RX19JA2 | FRANK:HDMI_Female | J3 |
| 1 | DF13-2P-1.25DSA | FRANK:Hirose_DF13-02P-1.25DSA | J8 |
| 1 | Debug | FRANK:JST_SH_1x03_P1.00mm_Vertical | J1 |
| 1 | ESP Flash | FRANK:Button_SMD_3x4x2mm | S6 |
| 1 | ESP Reset | FRANK:Button_SMD_3x4x2mm | S5 |
| 1 | ESP Reset | FRANK:Button_SMD_TS1234VW | S7 |
| 1 | ESP-01v090 | FRANK:ESP-01S | U9 |
| 1 | GPIO10/WCLK | FRANK:TestPoint_Pad_D1.2mm | TP9 |
| 1 | GPIO11/DIN | FRANK:TestPoint_Pad_D1.2mm | TP10 |
| 1 | GPIO2/SDA | FRANK:TestPoint_Pad_D1.2mm | TP5 |
| 1 | GPIO3/SCL | FRANK:TestPoint_Pad_D1.2mm | TP6 |
| 1 | GPIO36/TX | FRANK:TestPoint_Pad_D1.2mm | TP1 |
| 1 | GPIO37/RX | FRANK:TestPoint_Pad_D1.2mm | TP2 |
| 1 | GPIO38/ESP_RST | FRANK:TestPoint_Pad_D1.2mm | TP3 |
| 1 | GPIO39/ESP_BOOT | FRANK:TestPoint_Pad_D1.2mm | TP4 |
| 1 | GPIO44 | FRANK:TestPoint_Pad_D1.2mm | TP14 |
| 1 | GPIO8/MCLK | FRANK:TestPoint_Pad_D1.2mm | TP7 |
| 1 | GPIO9/BCLK | FRANK:TestPoint_Pad_D1.2mm | TP8 |
| 1 | Green | FRANK:LED_0603_1608Metric | LD3 |
| 1 | LX | FRANK:TestPoint_Pad_D1.2mm | TP18 |
| 1 | PJ-320D | FRANK:AudioJack_3.5mm_PJ320D_TapeIn | J9 |
| 1 | PJ-320D | FRANK:AudioJack_3.5mm_PJ320D_AudioOut | J7 |
| 1 | PWR | FRANK:PinHeader_1x03_P2.54mm | J16 |
| 1 | PWR Debug | FRANK:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP5 |
| 1 | RP Boot | FRANK:Button_SMD_TS1234VW | S3 |
| 1 | RP Boot | FRANK:Button_SMD_3x4x2mm | S1 |
| 1 | RP Reset | FRANK:Button_SMD_TS1234VW | S4 |
| 1 | RP Reset | FRANK:Button_SMD_3x4x2mm | S2 |
| 1 | RP2350B | FRANK:RP2350-QFN-80_10x10_P0.4mm | U3 |
| 1 | RUN | FRANK:TestPoint_Pad_D1.2mm | TP13 |
| 1 | SY8089AAAC | FRANK:SOT-23-5 | U18 |
| 1 | Speaker | FRANK:PinHeader_1x02_P2.54mm_Vertical | J15 |
| 1 | TLV320DAC3100IRHBR | FRANK:TLV320DAC3100IRHBR | U7 |
| 1 | TS3USB221RSER | FRANK:UQFN-10 | U17 |
| 1 | UART | FRANK:JST_SH_1x03_P1.00mm_Vertical | J2 |
| 1 | USB Debug | FRANK:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP4 |
The 266 most common of 273 parts.
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Questions
How big is the Frank zx PCB?
It measures 210 × 120 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Frank zx use?
273 parts, built around the RP2350B, SY8089AAAC, TPD4S012DRYR-TP and CH217K. 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 Frank zx KiCad files?
From the rh1tech/frank-lab repository on GitHub, at the commit this page was made from: the board is frank_zx/frank_zx.kicad_pcb and its schematic dino_z80/boot.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Frank zx design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).