Final
About the Final PCB
Final is an open source PCB design by monicaespinosa, published on GitHub. It is a 2-layer board measuring 28.5 × 45 mm, with 143 components from 19 distinct parts.
By type, the board carries 72 resistors, 47 capacitors, 13 ICs and 11 connectors.
From the project
This is a project done at EST-RUB. Here is the control and interface of a vacuum system using a Pfeiffer turbo pump plus a backing pump
The setup still has to be simulated to find out V_c and to check the accuracy of the voltages selected for the grid and the plate.
Initially were the following voltages set: VS 6.4 V VC: 6.4 V VG= 400 V VP= 1000 V
The result for the obtained trajectory is shown below. The obtained current was around 5 mA.
However, the shape of the electron beams seems to change its shape in a very drastic way. Making the VC smaller (more negative) should help concentring more the electrons to the center of the beam. A second simulation was made sweeping the voltage of the WehneltCylinider between -10 V and…
Final bill of materials (BOM)
143 components, 19 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | ~ | SOIC-14_3.9x8.7mm_P1.27mm | U1, U2, U3 |
| 1 | ~ | SMDIP-8_W9.53mm | U4 |
| 9 | ~ | SOP-8_3.9x4.9mm_P1.27mm | U5, U6, U7, U8, U9, U10, U11, U12 +1 |
| 1 | CONN_01X12 Conn_01x12 | SHF-106-01-L-D-SM | J1 |
| 3 | CONN_01X10 Conn_01x10 | FLE-105-01-X-DV-Y-TR | J2, J3, J5 |
| 1 | CONN_01X10 Conn_01x10 | FTSH-105-01-L-DV-K | J4 |
| 1 | CONN_01X02 Conn_01x02 | OST_OSTTE020104 | J10 |
| 3 | Conn_01x05 | PinHeader_1x05_P1.27mm_Vertical | J11, J12, J13 |
| 1 | Conn_01x14 | SAMTEC_FTS-107-01-L-D | J14 |
| 1 | Conn_01x14 | SAMTEC_FTSH-107-01-L-DV-K | J15 |
| 18 | 100P 100p | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C2, C3, C4, C5, C6, C7, C8 +10 |
| 2 | 100N 100n | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C20, C21 |
| 2 | 10U 10u | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C22, C23 |
| 16 | 0.1UF 0.1uF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C24, C25, C27, C28, C29, C30, C31, C32 +8 |
| 9 | 10N 10n | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C42, C43, C44, C45, C46, C47, C48, C49 +1 |
| 27 | 1k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2, R7, R8, R9, R10, R19, R20 +19 |
| 18 | 100K 100k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3, R4, R11, R12, R13, R14, R25, R26 +10 |
| 18 | 252K 252k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R5, R6, R15, R16, R17, R18, R31, R32 +10 |
| 9 | 12.5 281 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R55, R56, R57, R58, R59, R60, R61, R62 +1 |
Final design files
The KiCad project lives in the monicaespinosa/ConVacuumSystem repository on GitHub; these links point at the commit this page was built from.
Final: common questions
How big is the Final PCB?
The Final measures 28.5 × 45 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Final?
143 components, from 19 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Final design files?
From the monicaespinosa/ConVacuumSystem repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Final design in my own project?
The repository has no license, so all rights stay with monicaespinosa. Use it as a reference, and ask the author before reusing the design.
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