4 layers58 × 38 mm
2 layers77 × 102.7 mm
S16R4
Zannden/numpadThis repository contains PCB and 3D model files for a wireless programmable numpad design by me.
- Size
- 77 × 102.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 102
- Nets
- 101
- Pads
- 447
- Tracks, vias
- 25, 5
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 15 May 2026
- Updated
- 15 May 2026
Overview
S16R4 is an open-source printed circuit board by Zannden, from the Zannden/numpad repository on GitHub, published under the MIT licence. It is a 2-layer board of 77 × 102.7 mm with 102 parts on 101 nets, routed with 25 tracks and 5 vias.
It is built around the DLF162500LT-5028A1, SN74LVC1G125DCK and AZ1117IH-3.3TRG1, with the AZ1117IH-5.0TRG1, BQ21040DBV and USBLC6-2SC6 among its other parts. Its parts include 33 diodes, 24 capacitors, 20 switches, 11 resistors and 8 ICs. It belongs with the STM32 boards of this library.
Main components
10
DLF162500LT-5028A1
SMD-4P,1.6x0.8mm-40℃~+85℃ 0.33dB 2.4GHz~2.5GHz 49.2dB 50Ω Low Pass SMD-4P,1.6x0.8mm RF Filters ROHSTDKRF Filters
SN74LVC1G125DCK
SC-70-5-40℃~+125℃ 0.6ns@3.3V,15pF 1 1 1.65V~5.5V 10uA 32mA 32mA 74LVC Tri-State Unidirectional SC-70-5 Buffers, Drivers, Receivers, Transceivers ROHSTexas InstrumentsBuffers, Drivers, Receivers, Transceivers
AZ1117IH-3.3TRG1
SOT-223-40℃~+125℃@(Tj) 1 1.3V@(0.8A) 15V 3.3V 4mA 70dB@(120Hz) Fixed Over Current Protection、Over Temperature Protection Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSDiodes IncorporatedUncategorisedAZ1117IH-5.0TRG1
SOT-223-40℃~+125℃@(Tj) 0.003%Vout 1 1.2V@(0.8A) 1.35A 15V 4mA 5V 70dB@(120Hz) Fixed Over Current Protection、Over Temperature Protection Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSDiodes IncorporatedVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
BQ21040DBV
SOT-23-60℃~+125℃ 1 125uA 3.5V~28V 4.2V 800mA Charging IC Support SOT-23-6 Battery Management ROHSTexas InstrumentsBattery ManagementUSBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
WS2812B
5mm X 5mm Surface Mount RGB LED with Intelligent ControlWorldsemiUncategorised
EG2208
插件-20℃~+70℃ 10mm 200mA 30V DPDT PC Pin Rectangular Columnar 插件 Slide Switches ROHSE-SwitchSlide Switches
GRM1555C1HR80BA01D
04020.8pF 50V C0G 0402 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSMurataMultilayer Ceramic Capacitors MLCC - SMD/SMT
LQG15HS2N7S02D
0402150mΩ 2.7nH 6GHz 800mA 8@100MHz Multilayer inductor 0402 Inductors (SMD) ROHSMurataInductors (SMD)
README
README.mdnumpad
This repository contains PCB and 3D model files for a wireless programmable numpad design by me.
Parts
102| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | WS2812B | Fabians:LED_WS2812B-2020_PLCC4_2.0x2.0mm | D17, D18, D19, D20, D21, D22, D23, D24, D25, D26, D27, D28, D29, D30, D31, D32 |
| 16 | ~ | Switch_Keyboard_Hotswap_Kailh:SW_Hotswap_Kailh_MX_1.00u | S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S13, S14, S15, S16 |
| 15 | ~ | Diode_SMD:D_SOD-323 | D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, D14, D15, D16 |
| 9 | 100 nF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C2, C3, C4, C5, C6, C7, C11, C24 |
| 6 | 10K | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2, R3, R4, R5, R6 |
| 2 | 1 uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C10, C18 |
| 2 | 10 uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C14, C17 |
| 2 | 22 uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C15, C16 |
| 2 | 5k1 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R8, R9 |
| 2 | PEC12R-4222F-S0024 | PEC12R_4222F_S0024:XDCR_PEC12R-4222F-S0024 | S17, S18 |
| 1 | 0.1 uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C21 |
| 1 | 10 nF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C9 |
| 1 | 100 pF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C12 |
| 1 | 1000 uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C13 |
| 1 | 1825910-6 | 1825910_6:SW_1825910-6-4 | S20 |
| 1 | 1N4148 | Diode_SMD:D_SOD-323 | D1 |
| 1 | 1k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R10 |
| 1 | 1k5 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R11 |
| 1 | 1uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C22 |
| 1 | 2171790001 | 2171790001:MOLEX_2171790001 | J1 |
| 1 | 330 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R7 |
| 1 | 4.7 uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C8 |
| 1 | 47 uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C23 |
| 1 | AZ1117IH-3.3TRG1 | AZ1117IH_3_3TRG1:SOT230P700X185-4N | U4 |
| 1 | AZ1117IH-5.0TRG1 | footprints:SOT223-5_DIO | U7 |
| 1 | Antenna_Shield | RF_Antenna:Texas_SWRA117D_2.4GHz_Right | AE1 |
| 1 | BQ21040DBV | Package_TO_SOT_SMD:SOT-23-6 | U5 |
| 1 | Conn_01x05_Pin | Connector_PinSocket_2.54mm:PinSocket_1x05_P2.54mm_Vertical | J3 |
| 1 | DLF162500LT-5028A1 | footprints2:DLF-4_1P6X0P8 | U8 |
| 1 | EG2208 | EG2208:SW_EG2208 | S19 |
| 1 | GRM1555C1HR30WA01D | GRM1555C1HR30WA01D:CAPC1005X55N | C20 |
| 1 | GRM1555C1HR80BA01D | GRM1555C1HR80BA01D:CAPC1005X55N | C19 |
| 1 | LED 2.3V RED 0603 | Diode_SMD:D_0201_0603Metric_Pad0.64x0.40mm_HandSolder | D33 |
| 1 | LQG15HS2N7S02D | LQG15HS2N7S02D:INDC1005X55N | L1 |
| 1 | MCP2221AxSL | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U3 |
| 1 | S2B-PH-K-SLFSN | footprints1:CONN_S2B-PH-K-S_JST | J2 |
| 1 | SG-5032CAN | Oscillator:Oscillator_SMD_SeikoEpson_SG8002LB-4Pin_5.0x3.2mm | Y1 |
| 1 | SN74LVC1G125DCK | Package_TO_SOT_SMD:Texas_R-PDSO-G5_DCK-5 | U1 |
| 1 | STM32WB50CGUx | Package_DFN_QFN:QFN-48-1EP_7x7mm_P0.5mm_EP5.6x5.6mm | U2 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U6 |
Questions
How big is the S16R4 PCB?
It measures 77 × 102.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the S16R4 use?
102 parts, built around the DLF162500LT-5028A1, SN74LVC1G125DCK, AZ1117IH-3.3TRG1 and AZ1117IH-5.0TRG1. 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 S16R4 KiCad files?
From the Zannden/numpad repository on GitHub, at the commit this page was made from: the board is S16R4.kicad_pcb and its schematic Antenna.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the S16R4 design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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