

FirstLevel
PowerBoard
- Size
- 103 × 65 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 74
- Nets
- 52
- Pads
- 181
- Tracks, vias
- 592, 32
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 26 Aug 2026
- Updated
- 16 Sep 2026
Overview
FirstLevel is an open-source printed circuit board by EdwardNatasaputra, from the EdwardNatasaputra/powerBoard repository on GitHub. It is a 2-layer board of 103 × 65 mm with 74 parts on 52 nets, routed with 592 tracks and 32 vias.
It is built around the IRM-30-24, CT817C(SL)(T1)-H and HT7133-1, with the V9881D, 10D471K and NTC5D-9 among its other parts. Its parts include 23 resistors, 17 capacitors, 6 diodes, 5 ICs and 5 connectors.
Main components
9IRM-30-24
DIP,69.5x39mm1 1.3A 24V 31W 85VAC~264VAC 88.5% DIP,69.5x39mm Power Module/Power Supply ROHSMWPower Module/Power SupplyCT817C(SL)(T1)-H
SOP-4-2.54mm-55℃~+110℃ 1 1.24V 100mV@20mA,1mA 200% 200mW 35V 400% 50mA 5kV 60mA 6V 8us 9us DC Phototransistor SOP-4-2.54mm Transistor, Photovoltaic Output Optoisolators ROHSCT Micro InternationalTransistor, Photovoltaic Output OptoisolatorsHT7133-1
SOT-89-25℃~+70℃@(Ta) 1 100mA 100mV@(1mA) 3.3V 30V 3uA Fixed Positive SOT-89 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSUMWVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsV9881D
SSOP24SSOP24 New Arrivals ROHSVango TechUncategorised10D471K
插件,P=7.5mm190pF@1kHz 2.5kA 300V 385V 400mW 42.3J 423V~517V 775V 插件,P=7.5mm Varistors ROHSRUILONVaristorsNTC5D-9
插件,P=7.5mmNTC ThermistorsRUILONS8050
SOT-23-55℃~+150℃ 1 NPN 100MHz 100nA 120 25V 300mW 500mA 5V 600mV NPN SOT-23 Bipolar (BJT) ROHShongjiachengBipolar (BJT)SRD-05VDC-SL-C
插件,19.2x15.6mm100mΩ 10ms 10ms 15A 250V@AC 360mW 5 5V 70Ω Non-Polarized - Single Coil One set changeover: 1C (SPDT - changeover) 插件,19.2x15.6mm Power Relays ROHS松乐Power RelaysSS34
SMA(DO-214AC)-55℃~+125℃ 3A 40V 500uA@40V 550mV@3A Independent SMA(DO-214AC) Schottky Diodes ROHSMDDSchottky Diodes
README
README.mdpowerBoard
PowerBoard
Parts
74| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 100nF | Capacitor_SMD:C_0603_1608Metric | C30, C31, C37, C38, C39, C40 |
| 6 | 1KΩ | Resistor_SMD:R_0603_1608Metric | R21, R37, R39, R40, R41, R42 |
| 6 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4, H101, H102 |
| 5 | 33nF | Capacitor_SMD:C_0603_1608Metric | C25, C26, C27, C28, C33 |
| 4 | 10KΩ | Resistor_SMD:R_0603_1608Metric | R22, R33, R34, R36 |
| 3 | 10µF | Capacitor_Tantalum_SMD:CP_EIA-3216-10_Kemet-I | C34, C35, C36 |
| 2 | 100Ω | Resistor_SMD:R_0603_1608Metric | R26, R27 |
| 2 | 10D471K | Custom_Footprints:RES-TH_L12.5-W6.7-P7.50-D1.2 | RV2, RV3 |
| 2 | CT817C | Custom_Footprints:SOP-4_L6.4-W4.6-P2.54-LS10.2-TL | U7, U8 |
| 2 | LED_Red | LED_SMD:LED_0805_2012Metric | D11, D14 |
| 2 | Screw_Terminal_01x02 | TerminalBlock_MetzConnect:TerminalBlock_MetzConnect_Type101_RT01602HBWC_1x02_P5.08mm_Horizontal | J1, J6 |
| 1 | 0.001Ω/2W | Resistor_SMD:R_2512_6332Metric | R25 |
| 1 | 0.47µF/275VAC | Capacitor_THT:C_Rect_L18.0mm_W11.0mm_P15.00mm_FKS3_FKP3 | C29 |
| 1 | 100nF X2 (B32922C3104K189) | Capacitor_THT:C_Rect_L18.0mm_W6.0mm_P15.00mm_FKS3_FKP3 | C24 |
| 1 | 100Ω/2W | Resistor_THT:R_Axial_DIN0516_L15.5mm_D5.0mm_P25.40mm_Horizontal | R35 |
| 1 | 120Ω 2W | Resistor_THT:R_Axial_DIN0414_L11.9mm_D4.5mm_P15.24mm_Horizontal | R24 |
| 1 | 12V Zener | Diode_SMD:D_MELF | Z1 |
| 1 | 1MΩ | Resistor_SMD:R_0603_1608Metric | R28 |
| 1 | 210Ω | Resistor_SMD:R_0603_1608Metric | R38 |
| 1 | 220Ω | Resistor_SMD:R_0603_1608Metric | R20 |
| 1 | 24VTP | TestPoint:TestPoint_Pad_D1.5mm | TP2 |
| 1 | 4.7KΩ | Resistor_SMD:R_0603_1608Metric | R31 |
| 1 | 4.7KΩ | Resistor_SMD:R_1206_3216Metric | R43 |
| 1 | 470KΩ | Resistor_SMD:R_0603_1608Metric | R30 |
| 1 | 470µF/16v | Capacitor_SMD:CP_Elec_8x10.5 | C32 |
| 1 | 68KΩ | Resistor_SMD:R_0603_1608Metric | R32 |
| 1 | 750Ω | Resistor_SMD:R_0603_1608Metric | R29 |
| 1 | Conn_01x02_Pin | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J8 |
| 1 | Conn_01x03_Socket | Connector_PinSocket_2.54mm:PinSocket_1x03_P2.54mm_Vertical | J9 |
| 1 | Conn_01x04_Pin | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J10 |
| 1 | Fuse | Fuse:Fuseholder_Cylinder-5x20mm_Schurter_0031_8201_Horizontal_Open | F3 |
| 1 | GNDTP | TestPoint:TestPoint_Pad_D1.5mm | TP1 |
| 1 | HT7133-1_C15060 | Custom_Footprints:SOT-89-3_L4.5-W2.5-P1.50-LS4.2-BR | U5 |
| 1 | IRM-30-24 | Custom_Footprints:CONV_IRM-30-24 | PS1 |
| 1 | LED | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D12 |
| 1 | LED | LED_SMD:LED_0805_2012Metric | D13 |
| 1 | M7 | Diode_SMD:D_SMA | D10 |
| 1 | NTC5D-9 | Capacitor_THT:C_Disc_D9.0mm_W2.5mm_P5.00mm | TH2 |
| 1 | PC817 | Custom_Footprints:SOP-4_L6.4-W4.6-P2.54-LS10.2-TL | U1 |
| 1 | S8050 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | SRD-05VDC-SL-C | Custom_Footprints:RELAY_SRD-05VDC-SL-C | K1 |
| 1 | SS34 | Diode_SMD:D_SMA | D9 |
| 1 | T1A250V | Fuse:Fuse_Littelfuse_395Series | F4 |
| 1 | V9881D | Custom_Footprints:SSOP-24_L8.2-W5.3-P0.65-LS7.8-BL | U6 |
| 1 | ~ | Crystal:Crystal_SMD_5032-4Pin_5.0x3.2mm | Y1 |
Questions
How big is the FirstLevel PCB?
It measures 103 × 65 mm and has 2 copper layers, 1.6 mm thick.
What parts does the FirstLevel use?
74 parts, built around the IRM-30-24, CT817C(SL)(T1)-H, HT7133-1 and V9881D. 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 FirstLevel KiCad files?
From the EdwardNatasaputra/powerBoard repository on GitHub, at the commit this page was made from: the board is ACW_First/firstLevel.kicad_pcb and its schematic ACW_First/24_to_12.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the FirstLevel design in my own project?
Its repository states no licence, so its author keeps all rights: ask EdwardNatasaputra before reusing the design.
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