HardLabs

Psu breakout

techana·psu-breakout·v1/psu_breakout_v1.0B.kicad_pcb

Psu breakout layout, top view — open source board by techana

About the Psu breakout

Psu breakout is an open source PCB design by techana, published on GitHub. It is a 2-layer board measuring 100 × 100 mm, with 38 components from 30 distinct parts.

By type, the board carries 15 connectors, 8 diodes, 7 resistors, 5 fuses and 1 switch.

It belongs with the retro computing and dev boards & breakouts designs in this gallery, and the repository also holds 2 earlier revisions of it.

From the project

ATX/AT PSU breakout boards — passive 2-layer PCB with banana jacks for bench testing of vintage and modern PC power supplies

Repo: https://github.com/techana/psu-breakout

Passive bidirectional breakout for a standard ATX 24-pin PSU. Use it two ways:

- PSU → loads: plug an ATX PSU into J1, draw power from banana jacks, AT P8/P9, or disk Molex outputs. - Bench supply → loads: feed rails into the banana jacks or screw terminals, power a vintage AT/XT computer or drives via the AT and Molex outputs.

Psu breakout bill of materials (BOM)

38 components, 30 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ATX_24
J1
1
0366420001
AT_P8
Molex
J2
1
0366420001
AT_P9
Molex
J3
1
350211-1
Disk_Molex_F
TE Connectivity
J4
1
770997-1
Disk_Molex_M
TE Connectivity
J5
1
+12V red
generic
J6
5
GND blk
generic
J7, J9, J11, J13, J15
1
+5V red
generic
J8
1
+3V3 red
generic
J10
1
-5V red
generic
J12
1
-12V red
generic
J14
1
3568
5A +12V
Keystone Electronics
F1
1
3568
10A +5V
Keystone Electronics
F2
1
3568
5A +3V3
Keystone Electronics
F3
1
3568
2A -5V
Keystone Electronics
F4
1
3568
2A -12V
Keystone Electronics
F5
1
EG1271
PS_ON
E-Switch
SW1
1
TB002-500-04BE
5V/GND/12V/9VAC
Same Sky (CUI)
TB1
1
TB002-500-04BE
PG/-12V/GND/-5V
Same Sky (CUI)
TB2
1
L-934ID
+3V3 red
Kingbright
D1
Show 10 more
QtyPartRefs
1
L-934ID
+5V red
Kingbright
D2
1
L-934ID
+5VSB red
Kingbright
D3
1
L-934ID
+12V red
Kingbright
D4
1
L-934ID
-5V red
Kingbright
D5
1
L-934ID
-12V red
Kingbright
D6
1
L-934ID
PWR_OK red
Kingbright
D7
1
SB540
1N4148
Diotec
D8
2
CFR-25JB-52-1K
1k
Yageo
R1, R7
4
CFR-25JB-52-330R
330
Yageo
R2, R3, R4, R6
1
CFR-25JB-52-2K2
2.2k
Yageo
R5

Psu breakout design files

The KiCad project lives in the techana/psu-breakout repository on GitHub; these links point at the commit this page was built from.

Psu breakout: common questions

How big is the Psu breakout?

The Psu breakout measures 100 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Psu breakout?

38 components, from 30 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 Psu breakout design files?

From the techana/psu-breakout 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 Psu breakout design in my own project?

The repository has no license, so all rights stay with techana. Use it as a reference, and ask the author before reusing the design.

Earlier revisions in the repo: psu_breakout_v1.0A, psu_breakout

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