4 layers53.3 × 68.6 mm
2 layers85 × 55 mm
Business card philipp
OE9NAT/BusinessCardpersonal representation as a PCB
- Size
- 85 × 55 mm
- Copper layers
- 2
- Thickness
- 0.6 mm
- Parts
- 56
- Nets
- 33
- Pads
- 159
- Tracks, vias
- 707, 199
- Pours
- 7
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 21 Dec 2025
- Updated
- 16 Jan 2026
Overview
Business card philipp is an open-source printed circuit board by OE9NAT, from the OE9NAT/BusinessCard repository on GitHub. It is a 2-layer board of 85 × 55 mm with 56 parts on 33 nets, routed with 707 tracks and 199 vias.
It is built around the ATTINY85-20SU, AP2125N-3.3TRG1 and LL4448, with the TLE4476DXT and TP1 among its other parts. Its parts include 12 resistors, 11 diodes, 4 capacitors, 1 IC and 1 connector. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
5
ATTINY85-20SU
SOIC-8-208mil-40℃~+85℃ 10bit 2.7V~5.5V 20MHz 512Byte 512Byte 6 8 Bit 8KB AVR Built-in FLASH SOIC-8-208mil Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
AP2125N-3.3TRG1
SOT-23-40℃~+85℃@(Ta) 1 3.3V 300mA 50uVrms 60uA 65dB@(1kHz) 65mV@(100mA) 6V Fixed Over Current Protection、Over Temperature Protection Positive SOT-23 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSDiodes IncorporatedVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
LL4448
MiniMELFMiniMELF Switching Diodes ROHSLGESwitching DiodesTLE4476DXT
TO-252-5TO-252-5 New Arrivals ROHSInfineon TechnologiesUncategorisedTP1
-- Test leads ROHSFLUKEUncategorised
Parts
56| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 1k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R3, R9, R10 |
| 4 | LED | LED_SMD:LED_1206_3216Metric_Pad1.42x1.75mm_HandSolder | D2, D3, D4, D5 |
| 2 | 100 | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R11, R12 |
| 2 | 3V3 | Diode_SMD:D_MiniMELF | D6, D7 |
| 2 | 5k1 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R7, R8 |
| 2 | 68 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4, R5 |
| 2 | C | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C3, C4 |
| 2 | Conn_Coaxial_Small | Connector_Coaxial:SMA_Molex_73251-1153_EdgeMount_Horizontal | Coax_IN1, Coax_OUT1 |
| 2 | LOGO | LOGO | , G*** |
| 2 | TestPoint | TestPoint:TestPoint_Pad_1.5x1.5mm | TP_CC1, TP_CC2 |
| 1 | 100n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2 |
| 1 | 1k5 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R6 |
| 1 | 1µ | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1 |
| 1 | AP2125N-3.3TRG1 | Package_TO_SOT_SMD:SOT-23_Handsoldering | U2 |
| 1 | ATtiny85-20S | Package_SO:SOIC-8W_5.3x5.3mm_P1.27mm | UATtiny85 |
| 1 | Bridge_jumper 5V to 3V3 | Jumper:SolderJumper-3_P1.3mm_Bridged123_RoundedPad1.0x1.5mm_NumberLabels | 5V_or_3V3 |
| 1 | Conn_01x02_Pin | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | RF_coupled_forward1 |
| 1 | Conn_02x03 | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | ICSP |
| 1 | INPUT_<42V | Connector_Pin:Pin_D1.3mm_L11.3mm_W2.8mm_Flat | INPUT_6V-42V1 |
| 1 | JP5 | Jumper:SolderJumper-3_P1.3mm_Bridged12_Pad1.0x1.5mm_NumberLabels | differentialADC |
| 1 | LED 3V3 | LED_SMD:LED_1206_3216Metric_Pad1.42x1.75mm_HandSolder | D8 |
| 1 | LED 5V | LED_SMD:LED_1206_3216Metric_Pad1.42x1.75mm_HandSolder | D9 |
| 1 | LED green ~550nm | LED_SMD:LED_1206_3216Metric_Pad1.42x1.75mm_HandSolder | D1 |
| 1 | LED red ~660nm | LED_SMD:LED_1206_3216Metric_Pad1.42x1.75mm_HandSolder | D0 |
| 1 | LL4448 | Diode_SMD:D_MiniMELF_Handsoldering | D11 |
| 1 | Pin_PB0 | Jumper:SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm | JP1 |
| 1 | Pin_PB1 | Jumper:SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm | JP2 |
| 1 | Pin_PB3 | Jumper:SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm | JP3 |
| 1 | Q2_enable_5V | Jumper:SolderJumper-2_P1.3mm_Bridged2Bar_RoundedPad1.0x1.5mm | JP6 |
| 1 | SW_MEC_5E | Button_Switch_SMD:SW_Push_1P1T_NO_E-Switch_TL3301NxxxxxG | RESET |
| 1 | TLE4476DXT | footprints:TO114P998X235-5 | TLE4475D1 |
| 1 | TP0 | TestPoint:TestPoint_Pad_3.0x3.0mm | GND1 |
| 1 | TP1 | TestPoint:TestPoint_Pad_D1.5mm | usbD+ |
| 1 | TP10 | TestPoint:TestPoint_Pad_D1.5mm | TP_TX- |
| 1 | TP12 | TestPoint:TestPoint_Pad_D1.5mm | TP_SBU |
| 1 | TP2 | TestPoint:TestPoint_Pad_D1.5mm | usbD- |
| 1 | TP4 | TestPoint:TestPoint_Pad_D1.5mm | TP_RX+ |
| 1 | TP5 | TestPoint:TestPoint_Pad_D1.5mm | TP_RX- |
| 1 | TP_TX+ | TestPoint:TestPoint_Pad_D1.5mm | TP_TX+ |
| 1 | USB_A | Connector_USB:USB_A_Connfly_DS1095 | J2 |
| 1 | ÚSB-C edge_connector | PCM_PCB_USBC:PCBTypeC_24P | USB_C1 |
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Questions
How big is the Business card philipp PCB?
It measures 85 × 55 mm and has 2 copper layers, 0.6 mm thick.
What parts does the Business card philipp use?
56 parts, built around the ATTINY85-20SU, AP2125N-3.3TRG1, LL4448 and TLE4476DXT. 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 Business card philipp KiCad files?
From the OE9NAT/BusinessCard repository on GitHub, at the commit this page was made from: the board is business_card_philipp/business_card_philipp.kicad_pcb and its schematic business_card_philipp/USB_connection.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Business card philipp design in my own project?
Its repository states no licence, so its author keeps all rights: ask OE9NAT before reusing the design.