Pwr latcher
About the Pwr latcher PCB
Pwr latcher is an open source PCB design by OE9SAU, published on GitHub. It is a 2-layer board measuring 50 × 25.4 mm, with 20 components from 14 distinct parts.
By type, the board carries 8 resistors, 5 transistors, 5 connectors, 1 diode and 1 capacitor.
It belongs with the rf & radio designs in this gallery.
From the project
SDR TRX from Radioberry
inside running - RadioBerry on a RPI4 with 7" touch - Power Latcher by OE9SAU (single pushbutton to power On and Off the SAUBerry9) - vswr temp bridge by OE9SAU (fork of the nice vswr master by pa3gsb) add the tempsensor to the board - RadioberryConsole by VU2DLE - ATU-100 (in progress) - 50W or 100W PA (in progress) - SDRPreAmpFilter by OE9SAU (https://github.com/OE9SAU/SDRPreAmp_Filter) - LPF filterboard by ?? (in progress) - Radioberry-Filters-Interface by cinosh07 (in progress) - and some other stuff
Pwr latcher bill of materials (BOM)
20 components, 14 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 2N7002 | SOT-23 | Q1, Q2 |
| 2 | MMBT3904 | SOT-23 | Q3, Q5 |
| 1 | AOD403 | TO252 | Q4 |
| 1 | I/O | PinHeader_1x03_P2.54mm_Vertical | J1 |
| 2 | 5V OUT | JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J2, J4 |
| 1 | Conn_01x02_Pin | PinHeader_1x02_P2.54mm_Vertical | J3 |
| 1 | PWR LED | PinHeader_1x02_P2.54mm_Vertical | J5 |
| 1 | BAT54W | SOT-323_SC-70 | D1 |
| 1 | 22uF | C_0805_2012Metric | C1 |
| 1 | 160k | R_0805_2012Metric | R1 |
| 1 | 47k | R_0805_2012Metric | R2 |
| 4 | 10K | R_0805_2012Metric | R3, R4, R5, R6 |
| 1 | 0R | R_0805_2012Metric | R7 |
| 1 | 1M | R_0805_2012Metric | R8 |
Pwr latcher design files
The KiCad project lives in the OE9SAU/SAUBerry9 repository on GitHub; these links point at the commit this page was built from.
Pwr latcher: common questions
How big is the Pwr latcher PCB?
The Pwr latcher measures 50 × 25.4 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Pwr latcher?
20 components, from 14 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 Pwr latcher design files?
From the OE9SAU/SAUBerry9 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 Pwr latcher design in my own project?
The repository has no license, so all rights stay with OE9SAU. Use it as a reference, and ask the author before reusing the design.
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