IONPAK V2
m-labs·ionpak·hardware/rev2/kicad/IONPAK2.kicad_pcb
About the IONPAK V2 PCB
IONPAK V2 is an open source PCB design by m-labs, published on GitHub. It is a 4-layer board measuring 201.2 × 84.7 mm, with 259 components from 111 distinct parts.
Other key parts include the LMP7721, TSV324A, LM339ADT, H11L and FAN3100C. By type, the board carries 116 resistors, 59 capacitors, 25 diodes, 17 ICs, 13 transistors and 10 connectors.
From the project
A modern, low-cost universal controller for hot-cathode ionization vacuum gauges. (WIP)
A modern, low-cost universal controller for hot-cathode ionization vacuum gauges.
Many physics experiments require a good vacuum and therefore tools to diagnose vacuum-related problems. Ionization gauges provide a way to measure pressures in the medium to ultra-high vacuum regimes.
While the gauges themselves can be procured quite easily, the controller situation is more problematic. Existing commercial and DIY solutions have one or more of the following issues:

Main components on the IONPAK V2
IONPAK V2 bill of materials (BOM)
259 components, 111 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LMP7721 | SOIC-8-N_ns | U100 |
| 2 | TSV324A | SOIC-14_N | U101, U200 |
| 1 | LM339ADT | SOIC-14_N | U202 |
| 2 | H11L | 6-SMD | U300, U350 |
| 2 | FAN3100C | SOT-23-5 | U301, U351 |
| 1 | SPB05A-05 | SPB05A | U400 |
| 1 | LM2664 | SOT-23-6 | U401 |
| 1 | LM337L | SOIC-8-N | U402 |
| 1 | AMS1117-3.0 | SOT-223 | U403 |
| 1 | AMS1117-3.3 | SOT-223 | U404 |
| 1 | LTV-817S | OPTO-SMD4 | U405 |
| 1 | TM4C1294KCPDT | TQFP-128 | U500 |
| 2 | 74HC00 | SOIC-14_N | U501, U502 |
| 3 | DMG2305UX | SOT-23 | Q100, Q101, Q401 |
| 2 | 2N7002 | SOT-23 | Q102, Q103 |
| 3 | DMN3404L | SOT-23 | Q104, Q202, Q203 |
| 1 | FQD7N10L | DPAK | Q200 |
| 2 | IRFR3411 | DPAK | Q300, Q350 |
| 1 | BC817-40 | SOT-23 | Q301 |
| 1 | BC807-40 | SOT-23 | Q400 |
Show 91 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 25MHz | XTAL3_2X2_5 | Y500 |
| 1 | INT_PWR | PhoenixContact_MCV-G_02x5.08mm_Vertical | J4 |
| 1 | JTAG_ARM_10P | Pin_Header_Straight_2x05_Pitch1.27mm | J5 |
| 1 | TTL-232R-3V3 | Pin_Header_Straight_1x06_Pitch2.54mm | J6 |
| 1 | EXT_LEDS | Pin_Header_Straight_1x05_Pitch2.54mm | J7 |
| 1 | I2C | Pin_Header_Straight_1x04_Pitch2.54mm | J8 |
| 1 | INT_FAN | Molex_KK-6410-02_02x2.54mm_Straight | J9 |
| 1 | BNC | bnc_90_1-1337543-0_ns | P1 |
| 1 | CONN_01X03 | PhoenixContact_1786417_03 | P2 |
| 1 | DNP/EXT_PWR | PhoenixContact_MSTBA-G_02x5.08mm_Angled | P3 |
| 1 | RJ45_NO_SHIELD | FCI_54601-908WPLF | P4 |
| 1 | 2051-09 | BOURNS-GDT-2051_ns | GDT100 |
| 1 | DNP/2051 | BOURNS-GDT-2051 | GDT200 |
| 1 | 2035-09 | BOURNS-GDT-2035TH | GDT201 |
| 1 | 2057-35-BLF | BOURNS-GDT-2035TH | GDT400 |
| 1 | 3mm_Mounting_Hole_EARTH | 3mm_EARTH | H400 |
| 4 | 3.5mm_Mounting_Hole | NPTH_3mm5_ID | H401, H402, H403, H404 |
| 2 | 9001-05-00 | COTO-9001_ns | RL100, RL101 |
| 1 | SW_PBTN_2PIN_V | SW_Tactile_SKHH_Angled_v | S1 |
| 1 | HX1198FNL | H2019FNL | T500 |
| 1 | TDK_B66208X | TDK_B66208X | TR300 |
| 1 | TDK_B66206X | TDK_B66206X | TR350 |
| 10 | BAT54 | SOT-23 | D100, D101, D102, D208, D209, D211, D304, D305 +2 |
| 1 | SMCJ7.5A | DO-214AB | D200 |
| 3 | S1M | DO-214AC | D201, D300, D350 |
| 1 | BAS116 | SOT-23 | D202 |
| 1 | SMAJ5.0A | DO-214AC | D203 |
| 2 | BAT54S | SOT-23 | D206, D210 |
| 1 | UF4007 | Diode_DO-41_SOD81_Horizontal_RM10 | D301 |
| 1 | MBR1645 | TO220AC | D351 |
| 2 | LTL-533-11 | LED_D3.0mm_Horizontal_O3.81mm_Z10.0mm | D400, D501 |
| 1 | SMCJ12A | DO-214AB | D401 |
| 1 | LTL-523-11 | LED_D3.0mm_Horizontal_O3.81mm_Z10.0mm | D502 |
| 1 | SRV05-4 | SOT-23-6 | D504 |
| 2 | FB_10A | 28F0121-0SR-10 | FB400, FB401 |
| 1 | SDR0503-101KL | Choke_SMD_Wuerth-WE-PD2-Typ-MS | L400 |
| 1 | 47pF/1206 | C_1206_ns | C100 |
| 22 | 0.1uF | C_0603 | C101, C102, C103, C104, C201, C205, C304, C353 +14 |
| 1 | 10000pF/1206 | C_1206 | C200 |
| 2 | 1uF | C_0603 | C202, C204 |
| 1 | DNP | C_0603 | C206 |
| 5 | 470uF/16V | C_Radial_D13_L21_P5 | C300, C301, C350, C356, C412 |
| 4 | 10uF/25V/1206 | C_1206 | C302, C303, C351, C352 |
| 2 | 0.1uF/100V/1206 | C_1206 | C305, C354 |
| 1 | 10pF/1206 | C_1206 | C306 |
| 2 | 10uF/450V | C_Radial_D14_L25_P5 | C307, C308 |
| 2 | 2200pF/2kV/1812 | C_1812 | C309, C515 |
| 1 | 100pF | C_0603 | C357 |
| 11 | 10uF | C_0603 | C400, C401, C402, C403, C404, C405, C406, C407 +3 |
| 2 | 1000pF | C_0603 | C500, C501 |
| 2 | 12pF | C_0603 | C512, C513 |
| 2 | 100K/1206 | R_1206_ns | R100, R101 |
| 2 | 100K | R_0603 | R102, R107 |
| 1 | 27K/1%/1206 | R_1206_ns | R103 |
| 1 | 5.1M/1%/1206 | R_1206_ns | R104 |
| 2 | HMC1206JT500M | R_1206_ns | R105, R106 |
| 2 | 33R | R_0603 | R108, R109 |
| 5 | 4.7K/1% | R_0603 | R110, R208, R209, R226, R228 |
| 7 | 1K | R_0603 | R111, R217, R218, R404, R405, R523, R524 |
| 8 | 10K/1% | R_0603 | R112, R117, R215, R221, R223, R230, R317, R318 |
| 7 | 7.5K/1% | R_0603 | R113, R115, R211, R212, R214, R238, R239 |
| 3 | 470R/1% | R_0603 | R114, R220, R227 |
| 4 | 240R/1% | R_0603 | R116, R229, R400, R401 |
| 7 | 33K | R_0603 | R118, R120, R207, R210, R407, R408, R500 |
| 14 | 10K | R_0603 | R119, R121, R301, R320, R351, R355, R356, R501 +6 |
| 3 | 15M/1%/RNV | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R200, R201, R240 |
| 2 | 560K/1% | R_0603 | R202, R203 |
| 1 | 1M/1% | R_0603 | R204 |
| 2 | 2.7M/1% | R_0603 | R205, R206 |
| 9 | 240R | R_0603 | R213, R300, R319, R350, R403, R406, R502, R508 +1 |
| 1 | 180R/1W | R_Axial_DIN0414_L11.9mm_D4.5mm_P15.24mm_Horizontal | R216 |
| 1 | 22K | R_0603 | R219 |
| 2 | 100R | R_0603 | R222, R504 |
| 1 | 36R/1%/1206 | R_1206 | R224 |
| 1 | 180R/1% | R_0603 | R225 |
| 2 | 3.3R | R_0603 | R302, R352 |
| 2 | 4.7K/2512 | R_2512 | R303, R353 |
| 2 | 0R | R_0603 | R304, R354 |
| 1 | 2R/2512 | R_2512 | R305 |
| 1 | 10K/RNV | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R306 |
| 1 | 3.3K/1206 | R_1206 | R307 |
| 4 | 470K/1206 | R_1206 | R308, R309, R310, R311 |
| 1 | 22R/1W | R_Axial_DIN0414_L11.9mm_D4.5mm_P15.24mm_Horizontal | R312 |
| 1 | 2M/1%/RNV | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R313 |
| 1 | 10R | R_0603 | R402 |
| 1 | 4.87K/1% | R_0603 | R505 |
| 1 | 51R | R_0603 | R506 |
| 1 | 2K | R_0603 | R507 |
| 4 | 49.9R | R_0603 | R511, R512, R513, R514 |
| 4 | 75R | R_0603 | R515, R516, R517, R518 |
| 1 | 15M/RNV | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R525 |
IONPAK V2 design files
The KiCad project lives in the m-labs/ionpak repository on GitHub; these links point at the commit this page was built from.
IONPAK V2: common questions
How big is the IONPAK V2 PCB?
The IONPAK V2 measures 201.2 × 84.7 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the IONPAK V2?
259 components, from 111 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 IONPAK V2 design files?
From the m-labs/ionpak repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the IONPAK V2 design in my own project?
The repository has no license, so all rights stay with m-labs. Use it as a reference, and ask the author before reusing the design.