4 layers100 × 100 mm LDO pcb, the printed circuit board in 3D

LDO pcb

Size: 100 × 100 mm
Copper layers: 4
Thickness: 1.6 mm
Parts: 79
Nets: 32
Pads: 221
Tracks, vias: 256, 413
Pours: 2
Routed: Yes
KiCad: KiCad 10.0 (file 20260206)
Created: 6 Oct 2026
Updated: 7 Oct 2026

Overview

LDO pcb is an open-source printed circuit board by kthomas18, from the kthomas18/LDO-pcb repository on GitHub. It is a 4-layer board of 100 × 100 mm with 79 parts on 32 nets, routed with 256 tracks and 413 vias.

It is built around the BUF634AIDRB, RC0805FR-0710KL and FDV305N, with the PEC02SAAN, RQ73C2A124RBTD and SMA-J-P-H-ST-TH1 among its other parts. Its parts include 19 resistors, 15 capacitors, 13 connectors, 6 transistors and 3 ICs.

Main components

Parts

Qty	Value	Footprint	References
13	TestPoint	LDO-PCB-parts:KEYSTONE_5016	TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8, TP9, TP10, TP12, TP13, TP14
7	10k	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R7, R8, R9, R10, R11, R12, R13
7	10uF	Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C3, C6, C9, C13, C16, C18, C19
5	FDV305N	Package_TO_SOT_SMD:SOT-23	Q1, Q2, Q3, Q4, Q5
4	100nF	Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C2, C5, C8, C15
4	MountingHole	MountingHole:MountingHole_2.5mm	H1, H2, H3, H4
4	PEC02SAAN	switched_R_Load_footprints_lib:CONN_PxC02S_SUL	J1, J2, J3, J7
2	1K	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R2, R15
2	200	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R3, R4
2	V_S	LDO-PCB-parts:SAMTEC_SMA-J-P-H-ST-TH1	J17, J18
1	0	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R14
1	0.25Ω	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R21
1	0Ω	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R20
1	100KΩ	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R16
1	100uF	Capacitor_SMD:CP_Elec_6.3x5.4	C10
1	10K	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R1
1	10nF	Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder	C11
1	1nF	Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C12
1	1Ω	Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder	R17
1	250nF	Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C17
1	51.1	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R5
1	BUF634AIDR	TPS7A7001_Evaluation_Board_footprint_lib:SOIC127P599X175-8N	U3
1	BW_ADJ	TPS7A7001_Evaluation_Board_footprint_lib:CONN_PxC02S_SUL	JP3
1	DNP	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R6
1	EN_	TPS7A7001_Evaluation_Board_footprint_lib:CONN_PxC02S_SUL	JP6
1	GND	switched_R_Load_footprints_lib:CALTEST_CT3151-2	J6
1	LED	LED_SMD:LED_0805_2012Metric	D1
1	LED_FET	TPS7A7001_Evaluation_Board_footprint_lib:CONN_PxC02S_SUL	JP5
1	LOAD	LDO-PCB-parts:SAMTEC_SMA-J-P-H-ST-TH1	J16
1	NMOS	Package_TO_SOT_SMD:SOT-523	Q6
1	TMP	TPS7A7001_Evaluation_Board_footprint_lib:CONN_PxC02S_SUL	JP2
1	TMP235A2DBZR	TPS7A7001_Evaluation_Board_footprint_lib:DBZ0003A-IPC_A	U2
1	TMP_OUT	LDO-PCB-parts:KEYSTONE_5016	TP11
1	TMP_OUT	TPS7A7001_Evaluation_Board_footprint_lib:CONN_PxC02S_SUL	J11
1	VDD_BUF	LDO-PCB-parts:CALTEST_CT3151-2	J12
1	VIN	switched_R_Load_footprints_lib:CALTEST_CT3151-2	J5
1	VSIG_BUF	LDO-PCB-parts:SAMTEC_SMA-J-P-H-ST-TH1	J15
1	V_SIG	TPS7A7001_Evaluation_Board_footprint_lib:SAMTEC_SMA-J-P-H-ST-TH1	J13
1	~	Mo-QFN:QP-QFN32_7x7_P0.65_EP5.1_EE372	U1

Questions

How big is the LDO pcb PCB?

It measures 100 × 100 mm and has 4 copper layers, 1.6 mm thick.

What parts does the LDO pcb use?

79 parts, built around the BUF634AIDRB, RC0805FR-0710KL, FDV305N and PEC02SAAN. 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 LDO pcb KiCad files?

From the kthomas18/LDO-pcb repository on GitHub, at the commit this page was made from: the board is LDO-PCB.kicad_pcb and its schematic LDO-PCB.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the LDO pcb design in my own project?

Its repository states no licence, so its author keeps all rights: ask kthomas18 before reusing the design.

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/kthomas18-ldo-pcb" title="LDO pcb in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/kthomas18-ldo-pcb.jpg" alt="LDO pcb" width="1200" height="900">

A picture that opens the board, for a README

[![LDO pcb](https://pcbkit.io/embed/boards/kthomas18-ldo-pcb.jpg?size=s)](https://pcbkit.io/boards/kthomas18-ldo-pcb)

Source

Repository: kthomas18/LDO-pcb
Board file: LDO-PCB.kicad_pcb
Commit: 5ef0974
Licence: Not stated

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