48power
About the 48power PCB
48power is an open source PCB design by Supermagnum, published on GitHub under the CC0-1.0 license. It is a 2-layer board measuring 70 × 54.5 mm, with 29 components from 27 distinct parts.
Other key parts include the LM5157 and LM386N-4/NOPB. By type, the board carries 12 capacitors, 7 resistors, 2 ICs, 2 diodes, 1 battery holder and 1 switch.
It belongs with the audio designs in this gallery.
From the project
A small PCB that supplies +48 volt phantom power to a balanced audio system. It also has audio out.
Datasheet for the transformer: https://github.com/Supermagnum/48power/blob/main/108F(1).pdf
Datasheet for LM51571QRTERQ1 in WQFN (16) package : https://github.com/Supermagnum/48power/blob/main/lm51571-q1.pdf
Component selection according to Texas Instruments calculator: https://raw.githubusercontent.com/Supermagnum/48power/main/WBSchematicXLM5157QRTERQ1.svg
Now also with a small mono amplifier, with adjustable volume ( potentiometer ).
Main components on the 48power
48power bill of materials (BOM)
29 components, 27 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LM5157 | WQFN-16_EP_3.15x3.15_Pitch0.5mm | U1 |
| 1 | LM386N-4/NOPB | DIP-8_W7.62mm | U2 |
| 1 | ACC-9VCLIP-233M | PinHeader_1x02_P2.54mm_Vertical | BT1 |
| 1 | YPEL6250T | R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal | PTC1 |
| 1 | R_POT_TRIM-10K | PinHeader_1x03_P2.54mm_Vertical | RV1 |
| 1 | TE6-1A-DC-1-PB | PinHeader_2x01_P2.00mm_Vertical | SW1 |
| 1 | 108F | 108F | TR1 |
| 1 | SB130-T | D_DO-35_SOD27_P7.62mm_Horizontal | D1 |
| 1 | 18-032.0055L | LED_D2.0mm_W4.8mm_H2.5mm_FlatTop | D2 |
| 1 | 2.7uH | L_Axial_L9.5mm_D4.0mm_P12.70mm_Horizontal_Fastron_SMCC | L1 |
| 1 | 4.7uF | C_Disc_D3.8mm_W2.6mm_P2.50mm | C1 |
| 2 | 100nF | C_Disc_D3.8mm_W2.6mm_P2.50mm | C2, C10 |
| 2 | 1nF | C_Disc_D3.8mm_W2.6mm_P2.50mm | C3, C9 |
| 1 | 68nF | C_Disc_D3.8mm_W2.6mm_P2.50mm | C4 |
| 1 | 100uF | CP_Radial_D8.0mm_P3.50mm | C5 |
| 1 | 0.1uF | C_Disc_D3.8mm_W2.6mm_P2.50mm | C6 |
| 1 | 300pF | C_Disc_D3.8mm_W2.6mm_P2.50mm | C7 |
| 1 | 10nF | C_Disc_D3.8mm_W2.6mm_P2.50mm | C8 |
| 1 | 220 µF | CP_Radial_D6.3mm_P2.50mm | C11 |
| 1 | 0.05uF | C_Disc_D3.8mm_W2.6mm_P2.50mm | C12 |
Show 7 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 9.53K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
| 1 | 1.18K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2 |
| 1 | 3.3K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R3 |
| 1 | 118K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R5 |
| 1 | 2.49K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R6 |
| 1 | 10 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R7 |
| 1 | 12K | R_Axial_DIN0204_L3.6mm_D1.6mm_P7.62mm_Horizontal | R8 |
48power design files
The KiCad project lives in the Supermagnum/48power repository on GitHub; these links point at the commit this page was built from.
- Layoutsupply.kicad_pcb
48power: common questions
How big is the 48power PCB?
The 48power measures 70 × 54.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the 48power?
29 components, from 27 distinct parts. The full bill of materials is listed on this page.
Where can I download the 48power design files?
From the Supermagnum/48power repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the 48power design in my own project?
Yes, under the terms of its CC0-1.0 license, which Supermagnum chose for the repository.
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