4 layers210 × 120 mm
Frank zx
rh1tech/frank-lab
FRANK Board Laboratory (work-in-progress board prototopyes)
273 parts4GPL-3.0
4 layers99.5 × 80 mm
Xt8086 beta
rh1tech/frank-lab4FRANK Board Laboratory (work-in-progress board prototopyes)
- Size
- 99.5 × 80 mm
- Copper layers
- 4
- Thickness
- 1 mm
- Parts
- 258
- Nets
- 216
- Pads
- 969
- Tracks, vias
- 2,261, 386
- Pours
- 167
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 22 Apr 2026
- Updated
- 6 Nov 2026
Overview
Xt8086 beta 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 99.5 × 80 mm with 258 parts on 216 nets, routed with 2,261 tracks and 386 vias.
It is built around the LM358, USBLC6-2SC6 and CH217K, with the SN74HCT04DR (LX), AMS1117-1.8 and DS3231MZ/V+ among its other parts. Its parts include 106 capacitors, 73 resistors, 11 ICs, 4 diodes and 4 connectors.
Main components
10
LM358
SOP-8-18V~18V 0℃~+70℃ 1.2MHz 10nA 2 24mA 3V~36V 500uA 50nA 5mV 80dB Built-in compensation SOP-8 Operational Amplifier ROHSMSKSEMIOperational Amplifier
USBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD 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
SN74HCT04DR (LX)
SOP-14Inverterslingxingic
AMS1117-1.8
SOT-223-40℃~+125℃@(Tj) 0.003%Vout 1 1.3V@(1A) 1.8V 15V 1A 72dB@(120Hz) Fixed Positive Short Circuit Protection、Thermal shutdown SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
DS3231MZ/V+
SOIC-8-40℃~+85℃ 2.3V~5.5V Built-in I2C Temperature compensation、Backup power management and battery charging、Alarm function、Locking and tamper-proof、Periodic interrupt output SOIC-8 Real Time Clocks ROHSMaxim Integrated (Analog Devices)Real Time Clocks
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
1N5819WS
SOD-3231 Independent 1A 25A 40V 500uA@40V 600mV@1A SOD-323 Schottky Diodes ROHSGuangdong HottechSchottky Diodes
DC-005-5A-2.0
插件-20℃~+70℃ 24V 2mm 5A 6.2mm DC Power Jack Right Angle 插件 DC Power Connectors ROHSXKB ConnectionDC Power ConnectorsDS05-127-2-03BK-SMT-TR
SMD,P=1.27mm-40℃~+85℃ 1.27mm 2,000 cycles 24V 25mA 3 Gull Wing SPST Slide, Recessed SMD,P=1.27mm DIP Switches ROHSCUIDIP 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
258| Qty | Value | Footprint | References |
|---|---|---|---|
| 47 | 100n 50V | xt8086:C_0603_1608Metric | C2, C10, C11, C13, C15, C18, C19, C20, C21, C22, C23, C24, C25, C26, C27, C104 +31 |
| 19 | 10u 10V | xt8086:C_0603_1608Metric | C34, C35, C40, C41, C50, C72, C73, C77, C80, C81, C82, C83, C86, C90, C100, C105 +3 |
| 13 | 10kΩ | xt8086:R_0603_1608Metric | R5, R13, R14, R24, R63, R64, R65, R66, R67, R68, R69, R73, R75 |
| 10 | 100kΩ | xt8086:R_0603_1608Metric | R20, R21, R22, R26, R27, R28, R49, R51, R52, R53 |
| 9 | 1kΩ | xt8086:R_0603_1608Metric | R1, R2, R3, R4, R6, R7, R10, R46, R54 |
| 8 | 1u 50V | xt8086:C_0603_1608Metric | C6, C43, C68, C69, C78, C79, C102, C103 |
| 8 | 4.7u 16V | xt8086:C_0603_1608Metric | C7, C12, C14, C16, C17, C54, C56, C62 |
| 6 | 100u 25V | xt8086:CP_Radial_D6.3mm_P2.50mm | C1, C4, C36, C89, C92, C106 |
| 5 | 402Ω | xt8086:R_0603_1608Metric | R34, R36, R38, R58, R59 |
| 4 | 4.7kΩ | xt8086:R_0603_1608Metric | R31, R32, R40, R41 |
| 4 | Hole 2.5mm | xt8086:MountingHole_2.5mm_Pad_Via | H1, H2, H3, H4 |
| 3 | 0Ω | xt8086:R_0603_1608Metric | R15, R72, R74 |
| 3 | 220n 25V | xt8086:C_0603_1608Metric | C53, C55, C60 |
| 3 | 220Ω@100MHz | xt8086:L_0805_2012Metric | FB1, FB2, FB3 |
| 3 | 22kΩ | xt8086:R_0603_1608Metric | R50, R60, R61 |
| 3 | 2kΩ | xt8086:R_0603_1608Metric | R47, R48, R62 |
| 3 | 75Ω | xt8086:R_0603_1608Metric | R39, R42, R43 |
| 3 | 806Ω | xt8086:R_0603_1608Metric | R33, R35, R37 |
| 3 | USBLC6-2SC6 | xt8086:SOT-23-6 | U9, U11, U12 |
| 2 | 100u 6.3V | xt8086:C_1206_3216Metric | C38, C85 |
| 2 | 100Ω | xt8086:R_0603_1608Metric | R44, R45 |
| 2 | 10n 50V | xt8086:C_0603_1608Metric | C95, C96 |
| 2 | 15p 50V | xt8086:C_0603_1608Metric | C61, C64 |
| 2 | 1n 50V | xt8086:C_0603_1608Metric | C42, C63 |
| 2 | 2.2kΩ | xt8086:R_0603_1608Metric | R8, R55 |
| 2 | 20kΩ | xt8086:R_0603_1608Metric | R56, R57 |
| 2 | 27Ω | xt8086:R_0603_1608Metric | R11, R12 |
| 2 | 300kΩ | xt8086:R_0603_1608Metric | R19, R25 |
| 2 | 43kΩ | xt8086:R_0603_1608Metric | R23, R30 |
| 2 | 5.1kΩ | xt8086:R_0603_1608Metric | R16, R17 |
| 2 | AO3401A | xt8086:SOT-23-3L_AOS | Q1, Q2 |
| 2 | CH217K | xt8086:SOT-23-6 | U18, U19 |
| 2 | Red | xt8086:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1, D6 |
| 1 | +1V1 | xt8086:TestPoint_Pad_D1.0mm | TP1 |
| 1 | +5V_BUCK | xt8086:TestPoint_Pad_D1.0mm | TP10 |
| 1 | +5V_DC | xt8086:TestPoint_Pad_D1.0mm | TP2 |
| 1 | +5V_SEL | xt8086:TestPoint_Pad_D1.0mm | TP3 |
| 1 | 0.2A 9V | xt8086:Fuse_0603_1608Metric | F2 |
| 1 | 1.5A 24V | xt8086:Fuse_1812_4532Metric | F1 |
| 1 | 10u 25V | xt8086:C_0603_1608Metric | C45 |
| 1 | 12MHz | xt8086:Oscillator_SMD_3225_4Pin | Y2 |
| 1 | 150p 50V | xt8086:C_0603_1608Metric | C47 |
| 1 | 1MΩ | xt8086:R_0603_1608Metric | R18 |
| 1 | 1N5819WS | xt8086:D_SOD-323 | D5 |
| 1 | 2.2µH | xt8086:L_Cenker_CKCS3015 | L3 |
| 1 | 220u 16V | xt8086:CP_Radial_D6.3mm_P2.50mm | C51 |
| 1 | 22p 50V | xt8086:C_0603_1608Metric | C88 |
| 1 | 22u 16V | xt8086:CP_EIA-3528-12_Kemet-T | C76 |
| 1 | 22µH | xt8086:Inductor_CDRH104RNP | L2 |
| 1 | 2308 1W 8Ω | xt8086:CVS-2308 | LS1 |
| 1 | 24.576MHz | xt8086:Crystal_SMD_2520-4Pin | Y1 |
| 1 | 3.3µH | xt8086:L_LQH2MCN100K02L | L1 |
| 1 | 330Ω@100MHz 2A | xt8086:L_0805_2012Metric | FB4 |
| 1 | 33Ω | xt8086:R_0603_1608Metric | R9 |
| 1 | 6.8n 50V | xt8086:C_0603_1608Metric | C101 |
| 1 | 680u 25V | xt8086:CP_Radial_D8.0mm_P3.50mm | C44 |
| 1 | 693072010801 | xt8086:MicroSD_SMD_Long | J3 |
| 1 | 74HCT04 | xt8086:SOIC127P600X175-14N | U1 |
| 1 | 8.2kΩ | xt8086:R_0603_1608Metric | R29 |
| 1 | 8086_Min_Mode | xt8086:DIP-40_W15.24mm_Socket | U5 |
| 1 | AMS1117-1.8 | xt8086:SOT-223-3_TabPin2 | U16 |
| 1 | AMS_1V8 | xt8086:TestPoint_Pad_D1.0mm | TP9 |
| 1 | AMS_3V3 | xt8086:TestPoint_Pad_D1.0mm | TP18 |
| 1 | AMS_3V3A | xt8086:TestPoint_Pad_D1.0mm | TP19 |
| 1 | Audio L | xt8086:SolderJumper-2_P1.0mm_Open_RoundedPad0.7x1.0mm | JP4 |
| 1 | Audio R | xt8086:SolderJumper-2_P1.0mm_Open_RoundedPad0.7x1.0mm | JP5 |
| 1 | B | xt8086:TestPoint_Pad_D1.0mm | TP6 |
| 1 | Battery_CR1220 | xt8086:Battery_CR1220 | BT1 |
| 1 | Boot | xt8086:Button_SMD_3x4x2mm | S3 |
| 1 | DC-005-5A-2.0 | xt8086:BarrelJack_DC-005 | J8 |
| 1 | DC3RX19JA2 | xt8086:HDMI_Female | J9 |
| 1 | DS05-127-2-03BK-SMT-TR | xt8086:SW_DIP_DS05-127-2-03BK-SMT | S2 |
| 1 | DS3231MZ | xt8086:SO-8 | U14 |
| 1 | Debug | xt8086:JST_SH_1x03_P1.00mm_Vertical | J5 |
| 1 | ESP-PSRAM64H | xt8086:SO-8 | U8 |
| 1 | Force On | xt8086:SolderJumper-2_P1.0mm_Open_RoundedPad0.7x1.0mm | JP2 |
| 1 | G | xt8086:TestPoint_Pad_D1.0mm | TP5 |
| 1 | Green | xt8086:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D2 |
| 1 | HS | xt8086:TestPoint_Pad_D1.0mm | TP7 |
| 1 | LM358 | xt8086:SOIC-8_3.9x4.9mm_P1.27mm | U20 |
The 232 most common of 258 parts.
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Questions
How big is the Xt8086 beta PCB?
It measures 99.5 × 80 mm and has 4 copper layers, 1 mm thick.
What parts does the Xt8086 beta use?
258 parts, built around the LM358, USBLC6-2SC6, CH217K and SN74HCT04DR (LX). 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 Xt8086 beta KiCad files?
From the rh1tech/frank-lab repository on GitHub, at the commit this page was made from: the board is xt8086_beta/xt8086_beta.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 Xt8086 beta 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).