2 layers38.8 × 17 mm
2 layers48.3 × 66 mm
Interposer486 3v
JayesonLS/AdatpterBoards2Designs for Adapter Boards
- Size
- 48.3 × 66 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 216
- Nets
- 7
- Pads
- 251
- Tracks, vias
- 228, 76
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 28 Jul 2021
- Updated
- 30 Sep 2021
Overview
Interposer486 3v is an open-source printed circuit board by JayesonLS, from the JayesonLS/AdatpterBoards repository on GitHub. It is a 2-layer board of 48.3 × 66 mm with 216 parts on 7 nets, routed with 228 tracks and 76 vias.
Its parts include 20 capacitors, 4 connectors, 3 resistors and 1 IC.
README
README.mdAdatpterBoards
Various designs for adapter boards. Unless otherwise specificed, these designes are all placed into the Public Domain. See LICENSE for more details.
Battery BR-2/3A to CR2032
STATUS: Untested.
Allows use of a CR2032 in place of a Panasonic BR-2/3A, as used in some PS/2's for example.
Interposer 486 3V
STATUS: Untested. Assembling will be complicated - instructions to follow.
Allows a 3V 486 CPU to be used on mainboards with only 5V CPU support. Jumpers allow selection of:
- CLKMUL selection supported by some CPUs.
- Selecting between write-back or write-through cache. Not all CPUs or motherboards support write-back cache.
- CPU voltage of 3.3v or 3.45v.
5V power to the interposer board can be provided externally, or, through the otherwise unused outer ring of pins available on Socket 2 and Socket 3.
Parts
216| Qty | Value | Footprint | References |
|---|---|---|---|
| 162 | ??? | 00Custom:MachinePinHole | HA1, HA2, HA3, HA4, HA5, HA6, HA7, HA8, HA10, HA11, HA12, HA13, HA14, HA15, HA16, HA17 +146 |
| 24 | ??? | 00Custom:MachinePinHoleHighlighted | HB7, HB9, HB11, HC4, HC5, HE2, HE16, HG2, HG16, HH16, HK2, HK16, HL16, HM2, HM16, HP16 +8 |
| 16 | 0.1uF | Capacitor_SMD:C_1206_3216Metric | C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12, C13, C14, C15, C16 |
| 4 | 10uF | Capacitor_Tantalum_SMD:CP_EIA-3216-10_Kemet-I | C17, C18, C19, C20 |
| 1 | +5v External | Connector_Wire:SolderWirePad_1x01_SMD_1x2mm | CN1 |
| 1 | 121R | Resistor_SMD:R_1206_3216Metric | R1 |
| 1 | 12R | Resistor_SMD:R_1206_3216Metric | R3 |
| 1 | 200R | Resistor_SMD:R_1206_3216Metric | R2 |
| 1 | ?? | 00Custom:MachinePinHole | HAA8 |
| 1 | CLKMUL | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical_SMD_Pin1Left | J2 |
| 1 | LT1085-ADJ | Package_TO_SOT_SMD:TO-263-3_TabPin2 | U1 |
| 1 | V Select | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical_SMD_Pin1Left | J3 |
| 1 | WB/~WT | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical_SMD_Pin1Left | J1 |
| 1 | WB/~WT | 00Custom:MachinePinHoleHighlighted | HB13 |
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Questions
How big is the Interposer486 3v PCB?
It measures 48.3 × 66 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Interposer486 3v use?
216 parts. 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 Interposer486 3v KiCad files?
From the JayesonLS/AdatpterBoards repository on GitHub, at the commit this page was made from: the board is Interposer_486_3v/Interposer486_3v.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Interposer486 3v design in my own project?
Its repository states no licence, so its author keeps all rights: ask JayesonLS before reusing the design.