2 layers95 × 75 mm
Q17-Mini
stefaweb/Q17-Amplifier
The Q17 is an error correction HIFI amplifier based on the QUAD405 current dumping principle.
93 parts25GPL-3.0
2 layers190 × 75 mm
Q17-TURBO
stefaweb/Q17-Amplifier25The Q17 is an error correction HIFI amplifier based on the QUAD405 current dumping principle.
- Size
- 190 × 75 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 109
- Nets
- 60
- Pads
- 283
- Tracks, vias
- 489, 2
- Pours
- 7
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 12 Nov 2021
- Updated
- 5 Nov 2026
Overview
Q17-TURBO is an open-source printed circuit board by stefaweb, from the stefaweb/Q17-Amplifier repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 190 × 75 mm with 109 parts on 60 nets, routed with 489 tracks and 2 vias.
It is built around the OPA828ID, NDC7003P and 1N5245B, with the BS250P, 1N5248B and 47UF/25V among its other parts. Its parts include 38 resistors, 22 capacitors, 22 transistors, 10 diodes and 3 ICs. It belongs with the audio and music boards of this library.
Main components
12
OPA828ID
SOIC-8-18V~-4V、4V~18V -40℃~+125℃ 0.45uV/℃ 1 108dB 150V/us 1pA 1pA 45MHz 4nV/√Hz@1kHz 5.5mA 50uV 8V~36V Short-Circuit Protection、Overvoltage protection、ESD protection SOIC-8 FET Input Amplifiers ROHSTexas InstrumentsFET Input Amplifiers
NDC7003P
SOT-23-6MOSFETsTECH PUBLIC1N5245B
DO-35-65℃~+200℃ 1 Independent 100nA@11V 14.25V~15.75V 15V 16Ω 500mW 600Ω DO-35 Zener Diodes ROHSonsemiZener Diodes
BS250P
TO-92L-3-55℃~+150℃ 1 P-Channel 14Ω@10V 230mA 3.5V 45V 60pF 700mW P-Channel TO-92L-3 MOSFETs ROHSDiodes IncorporatedMOSFETs1N5248B
DO-35(DO-204AH)-65℃~+175℃ 1 Independent 100nA@14V 18V 21Ω 500mW 600Ω ±5% DO-35(DO-204AH) Zener Diodes ROHSMicrochip TechnologyZener Diodes
47UF/25V
C1812C1812 SMT ROHSJLCPCB AssemblyUncategorised
IRF610
TO-220AB-55℃~+150℃ 1 N-channel 1.5Ω@10V 135pF 16pF 200V 3.3A 43W 4V 60pF 8.2nC@10V N-Channel TO-220AB MOSFETsTexas InstrumentsMOSFETs
IRF9610PBF
TO-220-55℃~+150℃ 1 P-Channel 1.8A 11nC@10V 15pF 170pF 200V 20W 3Ω@10V 4V 50pF P-Channel TO-220 MOSFETs ROHSVishay IntertechnologyMOSFETs
KSA992FTA
TO-92-3-55℃~+150℃ 1 PNP 100MHz 120V 150 34.8mA 500mW 50nA 5V 90mV PNP TO-92-3 Bipolar (BJT) ROHSonsemiBipolar (BJT)
KSC1845FTA
TO-92-3L-55℃~+150℃ 1 NPN 100MHz 120V 150 300mV 500mW 50mA 50nA 5V NPN TO-92-3L Bipolar (BJT) ROHSonsemiBipolar (BJT)
DN2540N8-G
SOT-891 N-channel 170mA 25Ω@0V 300pF 30pF 400V 5pF N-Channel SOT-89 MOSFETs ROHSMicrochip TechnologyMOSFETs
FQA46N15
TO-3P-55℃~+175℃ 1 N-channel 100pF 150V 250W 4V 50A 85nC@10V TO-3P MOSFETs ROHSonsemiMOSFETs
README
README.mdQ17 : A QUAD405 audiophile MOSFET amplifier
Q17 is an amplifier based on the QUAD405 current dumping principle.
The project for porting the operating principle of the QUAD405 to a MOSFET base was originally created by engineer Tiberiu Vicol.
Use KiCad to open and edit source files. The great KiCad software can be downloaded from CERN.
Q17-Mini project 3.0 (90W @ 8 Ohms)
The first version of the board was released on December 8, 2021.
Version 3.0.4 was published on October 7, 2024.
All files are located in Q17-Mini-3.0 directory. Old version are located in Q17-Mini Archives directory.
Q17-Mini v3.0 (95x75mm, 2 Oz PCB)
Q17-TURBO project (150W @ 8 Ohms)
The natural evolution of the Q17-Mini, this time with two pairs of power transistors, better thermal management, better technical characteristics and the same sound signature with more punch.
An amplifier that will warm up even the coldest speakers.
The first version of the board was released on January, 6 2023.
Version 2.0.1 was released on October 5, 2024.
All files are located in Q17-TURBO-2.0 directory. Old version are located in Q17-TURBO Archives directory.
Q17-TURBO v2.0 (190x75mm, 2 Oz PCB)
You can very simply manufacture your PCB via JLCPCB (https://jlcpcb.com) or PCBWay (https://www.pcbway.com) using the Gerber files available on this repository. You can also contact me, from time to time I have some spare copies of the Q17 PCBs that can be sold to you at cost price.
Parts
109| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 100R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R5, R7, R8, R9, R29, R30, R40, R41 |
| 6 | 100nF | Capacitor_THT:C_Rect_L7.2mm_W2.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C4, C5, C8, C9, C11, C12 |
| 5 | TestPoint_THTPad_D1.5mm_Drill0.7mm | TestPoint:TestPoint_THTPad_D1.5mm_Drill0.7mm | GND, T2, T4, T5, T6 |
| 4 | 0R1/3W | Resistor_THT:R_Axial_DIN0614_L14.3mm_D5.7mm_P20.32mm_Horizontal | R36, R37, R38, R39 |
| 4 | 1N5245B | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D5, D6, D7, D10 |
| 4 | 330R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R14, R19, R20, R34 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3_DIN965_Pad_TopBottom | H1, H1, H1, H1 |
| 3 | BS250P | Package_TO_SOT_THT:TO-92S_Wide | Q9, Q11, Q111 |
| 2 | 10k/1W | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2, R21 |
| 2 | 150R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3, R6 |
| 2 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D8, D9 |
| 2 | 1N5248B | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D2, D3 |
| 2 | 2.2uF | Q17_Library:C_Rect_Q17_PSU_L26.50_H11.00_P20.50 | C18, C19 |
| 2 | 2200uF/63V | Capacitor_THT:CP_Radial_D22.0mm_P10.00mm_SnapIn | C15, C16 |
| 2 | 220uF/63V | Capacitor_THT:CP_Radial_D12.5mm_P5.00mm | C13, C14 |
| 2 | 22R/1W | Resistor_THT:R_Axial_DIN0411_L9.9mm_D3.6mm_P12.70mm_Horizontal | R26, R28 |
| 2 | 270R | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R15, R35 |
| 2 | 47R/2W | Resistor_THT:R_Axial_DIN0411_L9.9mm_D3.6mm_P12.70mm_Horizontal | R11, R12 |
| 2 | 47uF/25v | Capacitor_THT:CP_Radial_D10.0mm_P2.50mm_P5.00mm | C3, C6 |
| 2 | 8R2 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R10, R13 |
| 2 | 8k2 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R23, R25 |
| 2 | IRF610 | Package_TO_SOT_THT:TO-220-3_Vertical | Q1, Q13 |
| 2 | IRF9610 | Package_TO_SOT_THT:TO-220-3_Vertical | Q4, Q14 |
| 2 | KSA992 | Package_TO_SOT_THT:TO-92_Inline_Wide | Q2, Q10 |
| 2 | KSC1845 | Package_TO_SOT_THT:TO-92_Inline_Wide | Q3, Q12 |
| 2 | RED 2V | LED_THT:LED_D5.0mm | D1, D4 |
| 1 | 100nF FKP or MKT | Q17_Library:C_Rect_L18.0mm_W7.0mm_P15.00mm_C17 | C17 |
| 1 | 100uF/10V BP | Capacitor_THT:CP_Radial_D10.0mm_P5.00mm | C2 |
| 1 | 10R/2W | Q17_Library:R_Axial_L12.0mm_D5.0mm_P15.24mm_Horizontal_Dale_1W | R31 |
| 1 | 10k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R24 |
| 1 | 1k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R4 |
| 1 | 1u2 | Q17_Library:L_Axial_L22mm_D10mm_P21mm_vertical_Q17_Mini | L1 |
| 1 | 1uF MKP | Q17_Library:C_Rect_L7.2mm_W11.0mm_P5.00mm_MKP2_Custom | C20 |
| 1 | 22k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R18 |
| 1 | 2k7 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1 |
| 1 | 330p | Q17_Library:C_Mica_v2_L11.4mm_W4.3mm_H9.1_P5.9mm_mix | C22 |
| 1 | 3uF MKP | Q17_Library:C_Rect_C7_Q17_Mini_L31.50_H13.00_P36.20 | C7 |
| 1 | 470p Mica | Q17_Library:C_Mica_v2_L11.4mm_W4.3mm_H9.1_P5.9mm_mix | C1 |
| 1 | 47k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R16 |
| 1 | 47pF Mica | Q17_Library:C_Mica_v2_L11.4mm_W4.3mm_H9.1_P5.9mm_mix | C10 |
| 1 | 4k75 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R17 |
| 1 | 560R/1W | Resistor_THT:R_Axial_DIN0411_L9.9mm_D3.6mm_P12.70mm_Horizontal | R27 |
| 1 | 5n6 FKP | Q17_Library:C_Mica_v2_L11.4mm_W4.3mm_H9.1_P5.9mm_mix | C21 |
| 1 | DC | Q17_Library:TerminalBlock_Phoenix_PT-1,5-3-5.0-H_1x03_P5.00mm_Horizontal_Faston | J3 |
| 1 | DN2540 | Package_TO_SOT_THT:TO-92_Inline_Wide | Q8 |
| 1 | FQA46N15 | Q17_Library:TO-3PB-3_Horizontal_TabDown_6mmHole_v2_LEFT | Q17 |
| 1 | FQA46N15 | Q17_Library:TO-3PB-3_Horizontal_TabDown_6mmHole_v2 | Q15 |
| 1 | FQPF3N80C | Q17_Library:TO-220-3_Horizontal_TabDown_6mmHole_v2 | Q6 |
| 1 | FQPF7P20 | Q17_Library:TO-220-3_Horizontal_TabDown_6mmHole_v2 | Q5 |
| 1 | INPUT | Q17_Library:Input_connector_mix_regular | J1 |
| 1 | IXTH36P15P | Q17_Library:TO-3PB-3_Horizontal_TabDown_6mmHole_v2 | Q18 |
| 1 | IXTH36P15P | Q17_Library:TO-3PB-3_Horizontal_TabDown_6mmHole_v2_LEFT | Q16 |
| 1 | JFE150 | Package_TO_SOT_SMD:SOT-23-5_HandSoldering | Q7' |
| 1 | LSK170B | Package_TO_SOT_THT:TO-92_Inline_Wide | Q7 |
| 1 | NDC7003P | Q17_Library:NDC7003P-TSOT23-6 | U2 |
| 1 | OPA828 | Package_DIP:DIP-8_W7.62mm_Socket | U1' |
| 1 | OPA828 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U1 |
| 1 | PinHeader_1x02_P2.54mm_Vertical | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | HBR |
| 1 | SI2325DS | Package_TO_SOT_SMD:SOT-23_Handsoldering | Q4' |
| 1 | SI2328DS | Package_TO_SOT_SMD:SOT-23_Handsoldering | Q1' |
| 1 | SPK+ | Connector_AMASS:AMASS_XT30U-F_1x02_P5.0mm_Vertical | J2 |
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Questions
How big is the Q17-TURBO PCB?
It measures 190 × 75 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Q17-TURBO use?
109 parts, built around the OPA828ID, NDC7003P, 1N5245B and BS250P. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Q17-TURBO KiCad files?
From the stefaweb/Q17-Amplifier repository on GitHub, at the commit this page was made from: the board is Q17-TURBO-2.0/KiCad source/Q17-TURBO.kicad_pcb and its schematic Q17-Mini-3.0/KiCad source/Q17-Mini.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Q17-TURBO design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).