2 layers82.9 × 99.7 mm
MB PCB SHIELD
Miguel-Barcelos/Electronics-Projects
Este repositório contém projetos de eletrônica, incluindo circuitos eletrônicos, simulações e design de PCBs.
55 parts
2 layers100 × 40 mm
PSU linear reg
matterwaves/PSU_linear_reg1- Size
- 100 × 40 mm
- Copper layers
- 2
- Thickness
- 1.61 mm
- Parts
- 26
- Nets
- 13
- Pads
- 103
- Tracks, vias
- 182, 11
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 6 Dec 2024
- Updated
- 3 Sep 2025
Overview
PSU linear reg is an open-source printed circuit board by matterwaves, from the matterwaves/PSU_linear_reg repository on GitHub. It is a 2-layer board of 100 × 40 mm with 26 parts on 13 nets, routed with 182 tracks and 11 vias.
It is built around the L7805, L7812 and L7905, with the L7912, AO3400A and SI4459ADY among its other parts. Its parts include 8 capacitors, 8 connectors, 4 ICs, 3 resistors and 3 transistors. It belongs with the power boards of this library.
Main components
6
L7805
TO-220ST0℃~+125℃@(Tj) 1 1.2A 20V 2V@(1A) 42uV 500uA 5V 73dB@(120Hz) Fixed Positive Short Circuit Protection TO-220ST Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSOSENVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
L7812
TO-220ST0℃~+125℃@(Tj) 1 1.2A 12V 2V@(1A) 30V 71dB@(120Hz) 76uV Fixed Positive Short Circuit Protection TO-220ST Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSOSENVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsL7905
TO-220TO-220 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSKTPUncategorised
L7912
TO-220ST0℃~+125℃@(Tj) 1 1.2A 12V 200uV 2V@(1A) 35V 3mA 60dB@(120Hz) Fixed Negative Over Voltage Protection、Short Circuit Protection TO-220ST Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSOSENVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
AO3400A
SOT-23-55℃~+150℃ 1 N-channel 1.45V 1.4W 30V 48mΩ@2.5V 5.7A 50pF 630pF 75pF 7nC@10V N-Channel SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
SI4459ADY
SO-8-55℃~+150℃ 1 P-Channel 2.5V 29A 30V 45W 6nF 7.75mΩ@4.5V 790pF 860pF 95nC@4.5V P-Channel SO-8 MOSFETs ROHSVishay IntertechnologyMOSFETs
Parts
26| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | Conn_01x10_Pin | Connector_JST:JST_ZH_B10B-ZR_1x10_P1.50mm_Vertical | J3, J4, J5, J6 |
| 3 | 1M | Resistor_SMD:R_0603_1608Metric | R1, R2, R3 |
| 2 | 100n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2, C11 |
| 2 | 1u | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C4, C12 |
| 2 | 2.2u | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C3, C10 |
| 2 | 330n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C9 |
| 2 | AO3400A | Package_TO_SOT_SMD:SOT-23 | Q1, Q2 |
| 2 | Conn_Coaxial_Power | matterwaves:BNC_Molex_0731385033 | J1, J2 |
| 1 | Conn_01x02 | Connector_Wire:SolderWire-1sqmm_1x02_P7.8mm_D1.4mm_OD3.9mm | J8 |
| 1 | Conn_01x05 | Connector_Wire:SolderWire-1sqmm_1x05_P7.8mm_D1.4mm_OD3.9mm | J7 |
| 1 | L7805 | Package_TO_SOT_THT:TO-220-3_Vertical | U1 |
| 1 | L7812 | Package_TO_SOT_THT:TO-220-3_Vertical | U3 |
| 1 | L7905 | Package_TO_SOT_THT:TO-220-3_Vertical | U2 |
| 1 | L7912 | Package_TO_SOT_THT:TO-220-3_Vertical | U4 |
| 1 | SI4459ADY | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | Q5 |
Questions
How big is the PSU linear reg PCB?
It measures 100 × 40 mm and has 2 copper layers, 1.61 mm thick.
What parts does the PSU linear reg use?
26 parts, built around the L7805, L7812, L7905 and L7912. 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 PSU linear reg KiCad files?
From the matterwaves/PSU_linear_reg repository on GitHub, at the commit this page was made from: the board is psu_linear_reg.kicad_pcb and its schematic psu_linear_reg.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the PSU linear reg design in my own project?
Its repository states no licence, so its author keeps all rights: ask matterwaves before reusing the design.
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