2 layers90 × 88.4 mm
6 layers91 × 56 mm
Frost
notaroomba/frostA personal computer in an altoids tin
- Size
- 91 × 56 mm
- Copper layers
- 6
- Thickness
- 1.58 mm
- Parts
- 726
- Nets
- 866
- Pads
- 3,191
- Tracks, vias
- 70, 12
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 3 Dec 2025
- Updated
- 27 Sep 2026
Overview
Frost is an open-source printed circuit board by notaroomba, from the notaroomba/frost repository on GitHub. It is a 6-layer board of 91 × 56 mm with 726 parts on 866 nets, routed with 70 tracks and 12 vias.
It is built around the SY8089AAAC, ESD5311X and ESD5341N, with the FTC252012SR47MBCA, TFM252012ALVA2R2MTAA and ESD5344D among its other parts. Its parts include 362 capacitors, 190 resistors, 45 ICs, 9 diodes and 8 transistors.
Main components
11
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
ESD5311X
DFN1006-2-55℃~+125℃ 0.3pF 1 12V、21V 4A 5V 7.5V 80W 80nA Bidirectional ESD IEC 61000-4-2、IEC 61000-4-5 DFN1006-2 ESD and Surge Protection (TVS/ESD) ROHSTECH PUBLICESD And Surge Protection (TVS/ESD)ESD5341N
DFN1006-2-55℃~+85℃ 0.05pF 1 10nA 40V 5V Bidirectional ESD IEC 61000-4-2 DFN1006-2 ESD and Surge Protection (TVS/ESD) ROHSKUUESD And Surge Protection (TVS/ESD)
FTC252012SR47MBCA
100813mΩ 470nH 6.5A 7.5A ±20% 1008 Molding Power Inductors ROHScjiangPower InductorsTFM252012ALVA2R2MTAA
10082.2uH 2.6A 2.8A 75mΩ Automotive grade ±20% 1008 Power Inductors ROHSTDKInductors (SMD)ESD5344D
DFN2510-8-55℃~+150℃ 0.22pF 100nA 14V 4.5A 5V 63W 6V ESD Four channels IEC 61000-4-2、IEC 61000-4-4 Unidirectional DFN2510-8 ESD and Surge Protection (TVS/ESD) ROHSKUUESD And Surge Protection (TVS/ESD)
BWIPX-1-001E
SMD-40℃~+85℃ 1 1.25mm 2mm 50Ω 6GHz Board Side IPEX Inner pin SMD Coaxial Connectors (RF) ROHSBAT WIRELESSCoaxial Connectors (RF)
LVF404026-2R2M-N
SMD,4x4mm2.2uH 3.15A 3.42A 45mΩ ±20% SMD,4x4mm Power Inductors ROHSChilisin ElectronicsPower Inductors
TS24CA
SMD,4.6x1.8mm-20℃~+70℃ 1.6N 1.9mm 12V 20 thousand cycles 3.5mm 4.7mm 50mA Black No Rectangular Button SMD(SMT) Tab SPST Surface Mount, Right Angle Without Bracket SMD,4.6x1.8mm Tactile Switches ROHSSHOU HANTactile Switches
SS8050
SOT-323-55℃~+150℃ 1 NPN 1.5A 100MHz 100nA 200 25V 300mW 500mV 5V NPN SOT-23 Bipolar (BJT) ROHSJiangsu Changjing Electronics Technology (CJ)Bipolar (BJT)
X322525MOB4SI
SMD3225-4P-40℃~+85℃ 12pF 25MHz 50Ω Crystal Oscillator ±10ppm ±20ppm SMD3225-4P Crystals ROHSYXCCrystals
README
README.mdFrost
A computer that fits into an altoids tin!
Parts
726| Qty | Value | Footprint | References |
|---|---|---|---|
| 102 | 100nF X5R 10V | Capacitor_SMD:C_0402_1005Metric | C10, C113, C121, C124, C125, C126, C127, C128, C131, C132, C133, C136, C141, C142, C145, C146 +86 |
| 36 | 100nF X5R 10V | Capacitor_SMD:C_0201_0603Metric | C262, C265, C270, C274, C279, C282, C283, C284, C286, C288, C289, C292, C295, C337, C338, C340 +20 |
| 34 | 22R 5% | Resistor_SMD:R_0402_1005Metric | R1, R106, R107, R108, R109, R110, R111, R152, R153, R154, R155, R195, R196, R202, R203, R204 +18 |
| 33 | 0R 5% | Resistor_SMD:R_0402_1005Metric | R12, R103, R104, R130, R131, R132, R133, R134, R135, R136, R137, R138, R140, R141, R145, R151 +17 |
| 28 | 10K 5% | Resistor_SMD:R_0402_1005Metric | R17, R20, R24, R26, R29, R166, R167, R169, R171, R172, R174, R177, R179, R190, R198, R199 +12 |
| 26 | 22uF X5R 6.3V | Capacitor_SMD:C_0603_1608Metric | C104, C105, C106, C200, C222, C255, C256, C257, C259, C260, C263, C269, C271, C272, C301, C303 +10 |
| 21 | 1uF X5R 6.3V | Capacitor_SMD:C_0402_1005Metric | C107, C108, C109, C110, C111, C115, C116, C135, C266, C267, C322, C324, C325, C326, C332, C363 +5 |
| 17 | 10uF X5R 10V | Capacitor_SMD:C_0603_1608Metric | C7, C19, C30, C41, C43, C112, C114, C134, C138, C143, C144, C148, C242, C315, C334, C336 +1 |
| 16 | 4.7uF X5R 6.3V | Capacitor_SMD:C_0402_1005Metric | C44, C249, C254, C261, C264, C275, C276, C277, C280, C281, C341, C343, C347, C350, C366, C368 |
| 16 | ESD5451N_C5261080 | lcsc:DFN1006-2L-BI | U38, U39, U40, U41, U42, U43, U44, U45, U47, U48, U49, U58, U59, U60, U61, U62 |
| 13 | 10uF X5R 6.3V | Capacitor_SMD:C_0603_1608Metric | C151, C153, C201, C202, C223, C224, C243, C244, C258, C268, C273, C278, C319 |
| 13 | 1uF X5R 10V | Capacitor_SMD:C_0402_1005Metric | C18, C147, C188, C203, C225, C285, C287, C290, C291, C296, C307, C309, C312 |
| 13 | 2.2R 5% | Resistor_SMD:R_0402_1005Metric | R7, R8, R64, R65, R156, R209, R210, R211, R212, R213, R214, R215, R216 |
| 12 | 100nF X5R 10V | Capacitor_SMD:C_0201_0603Metric | C11, C12, C13, C14, C118, C119, C166, C167, C168, C169, C293, C294 |
| 12 | 1uF X5R 6.3V | Capacitor_SMD:C_0402_1005Metric | C72, C73, C75, C79, C81, C82, C87, C88, C91, C93, C94, C101 |
| 12 | TestPoint | TestPoint:TestPoint_Pad_D1.0mm | TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8, TP9, TP10, TP11, TP12 |
| 11 | ESD5311X | lcsc:DFN1006-2L-BI | U14, U15, U16, U17, U19, U20, U21, U22, U23, U24, U25 |
| 10 | 100K 5% | Resistor_SMD:R_0402_1005Metric | R23, R30, R47, R50, R88, R90, R139, R148, R149, R192 |
| 10 | 4.7K 5% | Resistor_SMD:R_0402_1005Metric | R66, R112, R115, R116, R118, R119, R120, R121, R123, R126 |
| 9 | 100R 5% | Resistor_SMD:R_0402_1005Metric | R14, R49, R101, R147, R180, R181, R183, R184, R185 |
| 8 | ESD5341N | lcsc:DFN1006-2L-RD | U28, U29, U30, U31, U68, U69, U70, U71 |
| 7 | 120@100MHz 0.03R | Inductor_SMD:L_0603_1608Metric | FB1, FB2, FB3, FB7, FB8, FB9, FB10 |
| 7 | 1uF X5R 10V | Capacitor_SMD:C_0402_1005Metric | C50, C57, C74, C83, C84, C85, C120 |
| 7 | 2.2K 5% | Resistor_SMD:R_0402_1005Metric | R146, R193, R194, R200, R201, R218, R219 |
| 7 | 4.7uF X5R 10V | Capacitor_SMD:C_0603_1608Metric | C160, C161, C163, C181, C186, C189, C192 |
| 6 | 10uF X5R 25V | Capacitor_SMD:C_0805_2012Metric | C3, C4, C5, C6, C21, C23 |
| 6 | 4.7uF X5R 6.3V | Capacitor_SMD:C_0603_1608Metric | C117, C129, C130, C139, C140, C154 |
| 6 | DNP | Capacitor_SMD:C_0402_1005Metric | C170, C171, C172, C173, C174, C175 |
| 5 | 0R 5% | Resistor_SMD:R_0201_0603Metric | R10, R11, R58, R59, R144 |
| 5 | 100nF X5R 10V | Capacitor_SMD:C_0402_1005Metric | C54, C80, C97, C98, C328 |
| 5 | 10uF X5R 10V | Capacitor_SMD:C_0805_2012Metric | C26, C27, C28, C29, C37 |
| 5 | 1nF X5R 10V | Capacitor_SMD:C_0402_1005Metric | C353, C354, C355, C356, C357 |
| 5 | FTC252012SR47MBCA | lcsc:IND-SMD_L2.5-W2.0 | U10, U64, U65, U66, U67 |
| 4 | 10K 1% | Resistor_SMD:R_0402_1005Metric | R186, R187, R188, R189 |
| 4 | 10nF X5R 25V | Capacitor_SMD:C_0402_1005Metric | C194, C195, C196, C197 |
| 4 | 10uF X5R 10V | Capacitor_SMD:C_0603_1608Metric | C65, C69, C76, C89 |
| 4 | 20pF C0G 50V | Capacitor_SMD:C_0402_1005Metric | C51, C52, C177, C178 |
| 4 | 220nF X5R 10V | Capacitor_SMD:C_0201_0603Metric | C297, C298, C299, C300 |
| 4 | 22pF C0G 50V | Capacitor_SMD:C_0402_1005Metric | C33, C38, C137, C318 |
| 4 | 22uF X5R 10V | Capacitor_SMD:C_0805_2012Metric | C39, C102, C103, C156 |
| 4 | 33R 5% | Resistor_SMD:R_0201_0603Metric | R157, R158, R161, R162 |
| 4 | 49.9R 1% | Resistor_SMD:R_0201_0603Metric | R159, R160, R163, R164 |
| 4 | ESD5344D | lcsc:DFN2510-10_L2.5-W1.0-P0.50-BL | D6, D7, D12, D13 |
| 3 | 0R 5% | Resistor_SMD:R_0603_1608Metric | R95, R96, R97 |
| 3 | 1.8K 5% | Resistor_SMD:R_0402_1005Metric | R82, R85, R105 |
| 3 | 100R 5% | Resistor_SMD:R_0402_1005Metric | R40, R41, R42 |
| 3 | 220pF C0G 25V | Capacitor_SMD:C_0402_1005Metric | C16, C17, C252 |
| 3 | 2SK3018_C194460 | lcsc:SOT-323-3_L2.0-W1.3-P1.30-LS2.1-BR | Q6, Q7, Q8 |
| 3 | 30K 1% | Resistor_SMD:R_0402_1005Metric | R16, R37, R39 |
| 3 | 51K 5% | Resistor_SMD:R_0402_1005Metric | R25, R48, R52 |
| 3 | BWIPX-1-001E | lcsc:IPEX-SMD_BWIPX-1-001E | RF1, RF2, RF3 |
| 3 | BZT52C5V1_C173407 | lcsc:SOD-123_L2.7-W1.6-LS3.7-RD | D1, D10, D11 |
| 3 | LVF404026-2R2M-N | lcsc:IND-SMD_L4.0-W4.0 | L3, L4, L11 |
| 3 | L_Iron_Coupled_Small | lcsc:FILTER-SMD_4P-L2.0-W1.2-BL_DLW21H | L1, L10, L12 |
| 3 | TFM252012ALVA2R2MTAA | lcsc:L1008 | U5, U35, U37 |
| 3 | TS24CA | lcsc:SW-SMD_2P-TS24CA | SW1, SW2, SW3 |
| 3 | WPM2015-3/TR_C7472861 | lcsc:SOT-23-3_L2.9-W1.3-P1.90-LS2.4-BR | Q3, Q4, Q9 |
| 2 | 100nF X5R 16V | Capacitor_SMD:C_0402_1005Metric | C36, C333 |
| 2 | 100nF X5R 16V | Capacitor_SMD:C_0402_1005Metric | C55, C56 |
| 2 | 100pF X5R 25V | Capacitor_SMD:C_0201_0603Metric | C164, C165 |
| 2 | 10pF C0G 50V | Capacitor_SMD:C_0402_1005Metric | C1, C2 |
| 2 | 120R 5% | Resistor_SMD:R_0402_1005Metric | R100, R182 |
| 2 | 180@100M 1.5A | Inductor_SMD:L_0603_1608Metric | FB5, FB6 |
| 2 | 18pF C0G 50V | Capacitor_SMD:C_0402_1005Metric | C305, C306 |
| 2 | 1K 5% | Resistor_SMD:R_0402_1005Metric | R87, R129 |
| 2 | 2.2uF X5R 10V | Capacitor_SMD:C_0402_1005Metric | C92, C123 |
| 2 | 20pF C0G 50V | Capacitor_SMD:C_0402_1005Metric | C158, C159 |
| 2 | 240R 5% | Resistor_SMD:R_0402_1005Metric | R142, R143 |
| 2 | 27pF C0G 50V | Capacitor_SMD:C_0402_1005Metric | C95, C96 |
| 2 | 4.7F X5R 6.3V | Capacitor_SMD:C_0402_1005Metric | C311, C314 |
| 2 | 470R 1% | Resistor_SMD:R_0402_1005Metric | R165, R173 |
| 2 | 47K 1% | Resistor_SMD:R_0402_1005Metric | R28, R43 |
| 2 | 510R 5% | Resistor_SMD:R_0402_1005Metric | R127, R128 |
| 2 | 680pF C0G 50V | Capacitor_SMD:C_0402_1005Metric | C99, C100 |
| 2 | B5819WS_C916992 | lcsc:SOD-323_L1.7-W1.3-LS2.5-RD | D14, D15 |
| 2 | SS8050 | Package_TO_SOT_SMD:SOT-23 | Q2, Q5 |
| 2 | SY8089AAAC | lcsc:SOT-23-5_L3.0-W1.7-P0.95-LS2.8-BR | U51, U63 |
| 2 | X322525MOB4SI | lcsc:CRYSTAL-SMD_4P-L3.2-W2.5-BL | X4, X6 |
| 1 | 0.01R 1% | Resistor_SMD:R_1206_3216Metric | R18 |
| 1 | 0R | Resistor_SMD:R_1206_3216Metric | R3 |
The 649 most common of 726 parts.
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Questions
How big is the Frost PCB?
It measures 91 × 56 mm and has 6 copper layers, 1.58 mm thick.
What parts does the Frost use?
726 parts, built around the SY8089AAAC, ESD5311X, ESD5341N and FTC252012SR47MBCA. 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 Frost KiCad files?
From the notaroomba/frost repository on GitHub, at the commit this page was made from: the board is hardware/board/frost.kicad_pcb and its schematic hardware/board/camera.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Frost design in my own project?
Its repository states no licence, so its author keeps all rights: ask notaroomba before reusing the design.