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6 layers99.3 × 40.6 mmFpc to m2 m socket, the printed circuit board in 3D

Fpc to m2 m socket

M1cha/sdexpress_pcbs12
Full screenGitHub.kicad_pcb
Size
99.3 × 40.6 mm
Copper layers
6
Thickness
1.6 mm
Parts
31
Nets
69
Pads
172
Tracks, vias
306, 243
Pours
6
Routed
Yes
KiCad
KiCad 9.0 (file 20241229)
Created
25 Apr 2025
Updated
11 Jun 2025

Overview

Fpc to m2 m socket is an open-source printed circuit board by M1cha, from the M1cha/sdexpress_pcbs repository on GitHub. It is a 6-layer board of 99.3 × 40.6 mm with 31 parts on 69 nets, routed with 306 tracks and 243 vias.

It is built around the OK2EL89CJI-111YLC-32.768K. Its parts include 7 resistors, 6 capacitors, 5 connectors, 2 ICs and 1 diode.

Main components

1

README

fpc-to-m2_m_socket/README.md

FPC to M.2-M socket

[!WARNING] This didn't work out due issues with properly soldering the FPC.

Connects an M.2 Key-M SSD to FPC.

JLCPCB order parameters:

  • Gerber file: fpc-to-m2_m_socket_Y4
  • Build Time: 3-4 days (PCBA Only)
  • Base Material: FR-4
  • Layers: 6
  • Dimension: 99.3 mm* 70.58 mm
  • PCB Qty: 5
  • Product Type: Industrial/Consumer electronics
  • Different Design: 1
  • Delivery Format: Single PCB
  • PCB Thickness: 0.8mm
  • Specify Stackup: yes JLC06081H-2116
  • Impedance Control: No requirement
  • PCB Color: Green
  • Silkscreen: White
  • Material Type: FR-4 TG155
  • Via Covering: Epoxy Filled & Capped
  • Surface Finish: ENIG Gold Fingers: 2U"
  • Deburring/Edge rounding: No
  • Outer Copper Weight: 1 oz
  • Inner Copper Weight: 0.5 oz
  • Gold Fingers: No
  • Electrical Test: Flying Probe Fully Test
  • Castellated Holes: no
  • Press-Fit Hole: No
  • Edge Plating: No
  • Mark on PCB: Remove Mark
  • Blind Slot: No
  • Min via hole size/diameter: 0.3mm/(0.4/0.45mm)
  • 4-Wire Kelvin Test: No
  • Paper between PCBs: No
  • Appearance Quality: IPC Class 2* Standard
  • Confirm Production file: Yes
  • Silkscreen Technology: Ink-jet/Screen Printing Silkscreen
  • Package Box: With JLCPCB logo
  • Inspection Report: No
  • Board Outline Tolerance: ±0.2mm(Regular)

Parts

31
QtyValueFootprintReferences
9LOGOLOGOG***, G***, G***, G***, G***, G***, G***, G***, G***
40Resistor_SMD:R_0402_1005MetricR2, R4, R5, R6
40.1uFCapacitor_SMD:C_0402_1005MetricC1, C3, C4, C5
210KResistor_SMD:R_0402_1005MetricR1, R3
115pFCapacitor_SMD:C_0402_1005MetricC6
11uFCapacitor_SMD:C_0402_1005MetricC2
125Resistor_SMD:R_0805_2012MetricR7
1Bus_M.2_Socket_Mm1cha:CONN-SMD_APCI0146-P001AJ2
1Conn_01x02_PinConnector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_VerticalJ5
1LEDLED_SMD:LED_0805_2012MetricD1
1OK2EL89CJI-111YLC-32.768Km1cha:OSC-SMD_4P-L3.2-W2.5-BL_TG-5006CEY1
1~m1cha:TMUXHS221NKGTU1
1~Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_VerticalJ3
1~m1cha:TF-SMD_503398-1892J4
1~m1cha:FPC-SMD_18P-P1.00_JS_AFA07-S18XXXJ1
1~Package_SO:TSSOP-16_4.4x5mm_P0.65mmU2

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4

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Questions

How big is the Fpc to m2 m socket PCB?

It measures 99.3 × 40.6 mm and has 6 copper layers, 1.6 mm thick.

What parts does the Fpc to m2 m socket use?

31 parts, built around the OK2EL89CJI-111YLC-32.768K. 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 Fpc to m2 m socket KiCad files?

From the M1cha/sdexpress_pcbs repository on GitHub, at the commit this page was made from: the board is fpc-to-m2_m_socket/fpc-to-m2_m_socket.kicad_pcb and its schematic fpc-to-m2_m_socket/fpc-to-m2_m_socket.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Fpc to m2 m socket design in my own project?

Its repository states no licence, so its author keeps all rights: ask M1cha before reusing the design.