# Low Noise 3.3V PSU Feedforward LM317 V3 ## Description An evolving template for manufacturing of PCBs on a CNC machines I love [this guide](https://www.instructables.com/Milling-Printed-Circuit-Boards-PCBs-on-a-Cheap-CNC/) for CNC milling PCBs -0.4mm KeepOut -1mm via drill size #template ## Project Details - **Owner:** mantas59 - **Created:** 8/17/2024 - **Last Updated:** 6/8/2025 - **Visibility:** Public - **License:** https://creativecommons.org/licenses/by/4.0/ - **Copies:** 8 ## Key Components ### D1 — MUR120 - Package or Case Code: DO-41 - Manufacturer Part Number: MUR120 - Manufacturer Name: Diodes Incorporated - Part Type: Rectifier Diode **Pins:** - A [pin 2] - C [pin 1] ### D2 — MUR120 - Part Type: Rectifier Diode - Manufacturer Part Number: MUR120 - Package or Case Code: DO-41 - Manufacturer Name: Diodes Incorporated **Pins:** - A [pin 2] - C [pin 1] ### D3 — MUR120 - Part Type: Rectifier Diode - Manufacturer Part Number: MUR120 - Package or Case Code: DO-41 - Manufacturer Name: Diodes Incorporated **Pins:** - A [pin 2] - C [pin 1] ### D4 — MUR120 - Manufacturer Name: Diodes Incorporated - Package or Case Code: DO-41 - Manufacturer Part Number: MUR120 - Part Type: Rectifier Diode **Pins:** - A [pin 2] - C [pin 1] ### D5 — [1N4002](https://www.flux.ai/jecstronic/1n4002~qgx.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Diode - Datasheet URL: https://www.nteinc.com/specs/original/1N4001_07.pdf - Manufacturer Name: NTE Electronics, Inc - Manufacturer Part Number: 1N4002 **Pins:** - anode [pin 2] - cathode [pin 1] ### D6 — [1N4002](https://www.flux.ai/jecstronic/1n4002~qgx.md) - Manufacturer Part Number: 1N4002 - Manufacturer Name: NTE Electronics, Inc - Datasheet URL: https://www.nteinc.com/specs/original/1N4001_07.pdf - Part Type: Diode - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - anode [pin 2] - cathode [pin 1] ### D7 — [1N4002](https://www.flux.ai/jecstronic/1n4002~qgx.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: NTE Electronics, Inc - Part Type: Diode - Datasheet URL: https://www.nteinc.com/specs/original/1N4001_07.pdf - Manufacturer Part Number: 1N4002 **Pins:** - anode [pin 2] - cathode [pin 1] ### F1 — [696105003002](https://www.flux.ai/adrian95/696105003002~mcn.md) - Part Type: Fuse Holder - Manufacturer Name: Würth Elektronik - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.we-online.com/components/products/datasheet/696105003002.pdf - Manufacturer Part Number: 696105003002 **Pins:** - 1 [pin 1] - 2 [pin 2] ### H1 — [Mounting Hole 3.2mm DIN965 Pad](https://www.flux.ai/adrian95/mounting-hole-32mm-din965-pad~aio.md) - Part Type: Connector **Pins:** - Pin_1 ### H2 — [Mounting Hole 3.2mm DIN965 Pad](https://www.flux.ai/adrian95/mounting-hole-32mm-din965-pad~aio.md) - Part Type: Connector **Pins:** - Pin_1 ### H3 — [Mounting Hole 3.2mm DIN965 Pad](https://www.flux.ai/adrian95/mounting-hole-32mm-din965-pad~aio.md) - Part Type: Connector **Pins:** - Pin_1 ### H4 — [Mounting Hole 3.2mm DIN965 Pad](https://www.flux.ai/adrian95/mounting-hole-32mm-din965-pad~aio.md) - Part Type: Connector **Pins:** - Pin_1 ### HS1 — Heat Sink Fisher SK104 38.1 STC - Manufacturer Part Number: SK 104 38.1 STC - Part Type: Thermal Management - Manufacturer Name: Fischer Elektronik GmbH & Co. KG **Pins:** - P1 [pin 1] - P2 [pin 1] ### HS2 — Heat Sink Fisher SK104 38.1 STC - Manufacturer Part Number: SK 104 38.1 STC - Part Type: Thermal Management - Manufacturer Name: Fischer Elektronik GmbH & Co. KG **Pins:** - P1 [pin 1] - P2 [pin 1] ### J1 — [2-Position Screw Terminal](https://www.flux.ai/corynrobinson/2-position-screw-terminal~s4.md) - Manufacturer Part Number: 691137710002 - Part Type: Connector - Datasheet URL: https://www.we-online.com/katalog/datasheet/691137710002.pdf - Manufacturer Name: Würth Elektrik **Pins:** - P1 [pin 1] - P2 [pin 2] ### J2 — [2-Position Screw Terminal](https://www.flux.ai/corynrobinson/2-position-screw-terminal~s4.md) - Datasheet URL: https://www.we-online.com/katalog/datasheet/691137710002.pdf - Manufacturer Name: Würth Elektrik - Manufacturer Part Number: 691137710002 - Part Type: Connector **Pins:** - P1 [pin 1] - P2 [pin 2] ### Q1 — [IRF520NPBF](https://www.flux.ai/openpartlist/irf520npbf~dd.md) - Manufacturer Name: Infineon Technologies - Datasheet URL: https://www.infineon.com/dgdl/irf520npbf.pdf - Part Type: Transistor - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: IRF520NPBF **Pins:** - D [pin 2] - G [pin 1] - S [pin 3] ### U1 — [LM317T-NOPB](https://www.flux.ai/adrian95/lm317t-nopb~40r.md) - Datasheet URL: https://www.ti.com/lit/ds/symlink/lm117.pdf - Manufacturer Part Number: LM317T-NOPB - Manufacturer Name: Texas Instruments - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Integrated Circuit **Pins:** - ADJ [pin 1] - VI [pin 3] - VO [pin 2] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/mantas59/low-noise-3p3v-psu-feedforward-lm317-v3~jv](https://www.flux.ai/mantas59/low-noise-3p3v-psu-feedforward-lm317-v3~jv).* --- *Generated from [https://www.flux.ai/mantas59/low-noise-3p3v-psu-feedforward-lm317-v3~jv](https://www.flux.ai/mantas59/low-noise-3p3v-psu-feedforward-lm317-v3~jv)*