2 layers121.9 × 88.9 mm
2 layers73.7 × 103 mm
MM Plus RE
NeilKhera/Random-PCBsA backup of random PCB projects. In various states of completion
- Size
- 73.7 × 103 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 246
- Nets
- 219
- Pads
- 830
- Tracks, vias
- 2,130, 962
- Pours
- 17
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 8 Jan 2025
- Updated
- 19 Apr 2026
Overview
MM Plus RE is an open-source printed circuit board by NeilKhera, from the NeilKhera/Random-PCBs repository on GitHub. It is a 2-layer board of 73.7 × 103 mm with 246 parts on 219 nets, routed with 2,130 tracks and 962 vias.
It is built around the LM4890, W25Q128JVSIQ and UDT26A05L05UL, with the AXP223, PT4103E23F and 1N5819W among its other parts. Its parts include 98 resistors, 84 capacitors, 8 ICs, 6 diodes and 6 inductors.
Main components
12
LM4890
SOP-8-40℃~+85℃ 1% 1Wx1@8Ω 2.6mA 2V~5.5V 85dB Automatic mute/no-noise switch、Enable/shutdown function Class AB SOP-8 Audio Amplifiers ROHSIDCHIPAudio Amplifiers
W25Q128JVSIQ
SOIC-8-208mil-40℃~+85℃ 100,000 cycles 120ms@(32KB) 128Mbit 133MHz 1uA 2.7V~3.6V 20 Years 3ms Power-on reset、Hardware write protection、Software write protection、Write enable latch、Absolute write protection SPI SOIC-8-208mil NOR FLASH ROHSWinbondNOR FLASH
UDT26A05L05UL
SOT-23-6-55℃~+125℃ 0.3pF、0.8pF 20V 3A@8/20us 500nA 5V 60W@8/20us 6V Four channels IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSTECH PUBLICESD And Surge Protection (TVS/ESD)AXP223
QFN-68-EP(8x8)-20℃~+80℃ 2.9V~5V 2.9V~6.3V Dynamic voltage scaling、Overcurrent Protection、Operating status indication、Adjustable current limiting、Power-on timing control QFN-68-EP(8x8) Power Management - Specialized ROHSX-Powers TechPower Management - SpecializedPT4103E23F
SOT23-6SOT23-6 New Arrivals ROHSPowTechUncategorised
1N5819W
SOD-12313A 350mA 40V 5uA@30V 600mV@200mA Standalone SOD-123 Schottky Diodes ROHSJSMSEMISchottky Diodes
SKRTLAE010
SMD,4.5x3.4mm-40℃~+90℃ 1.63N 100,000 cycles 12V 3.3mm 3.4mm 4.5mm 50mA Round Button SMD(SMT) Tab SPST-NO Surface Mount, Right Angle SMD,4.5x3.4mm Tactile Switches ROHSALPSALPINETactile Switches
MMBT3904
SOT-23-55℃~+150℃ 1 NPN 100 100nA 200mA 200mW 300MHz 300mV 40V 6V NPN SOT-23 Bipolar (BJT) ROHSJiangsu Changjing Electronics Technology (CJ)Bipolar (BJT)AO3401A
SOT-231 P-Channel 14nC@10V 30V 47mΩ@10V、60mΩ@4.5V、85mΩ@2.5V 4A 55pF 645pF 80pF 900mV SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETsBL-M8188FU3(VC)
SMD,12.3x13mmSMD,12.3x13mm SMT ROHSB-LINKUncategorised
PJ-327F-J
SMD-30℃~+70℃ 3.5mm Headphone Jack 30V 500mA Copper Tin SMD Audio Connectors ROHSSHOU HANAudio ConnectorsTSOT-23-6
UncategorisedTexas Instruments
Parts
246| Qty | Value | Footprint | References |
|---|---|---|---|
| 39 | 0.1uF | Capacitor_SMD:C_0402_1005Metric | C1, C10, C11, C13, C14, C20, C21, C22, C24, C25, C28, C30, C32, C33, C35, C37 +23 |
| 27 | 10K | Resistor_SMD:R_0402_1005Metric | R14, R23, R24, R27, R29, R30, R34, R38, R41, R45, R52, R55, R56, R57, R60, R62 +11 |
| 27 | 10uF | Capacitor_SMD:C_0603_1608Metric | C2, C3, C4, C12, C15, C26, C29, C36, C41, C42, C43, C44, C45, C46, C48, C49 +11 |
| 24 | 47R | Resistor_SMD:R_0402_1005Metric | R15, R22, R25, R26, R28, R31, R42, R59, R61, R63, R65, R67, R70, R72, R74, R75 +8 |
| 11 | 0R | Resistor_SMD:R_0402_1005Metric | R6, R9, R10, R13, R16, R33, R35, R36, R51, R85, R92 |
| 10 | R | Resistor_SMD:R_0402_1005Metric | DNF2, DNF3, DNF4, DNF5, DNF6, DNF7, DNF8, DNF9, DNF10, DNF11 |
| 7 | 4.7K | Resistor_SMD:R_0402_1005Metric | R20, R21, R46, R47, R48, R49, R96 |
| 5 | 1.5uH | MM-Plus-RE:TYA2016108R2M10 | L1, L2, L3, L4, L5 |
| 5 | 1K | Resistor_SMD:R_0402_1005Metric | R4, R7, R19, R37, R84 |
| 5 | 4.7uF | Capacitor_SMD:C_0603_1608Metric | C39, C40, C77, C78, C82 |
| 4 | 100R | Resistor_SMD:R_0402_1005Metric | R43, R44, R50, R53 |
| 4 | 1uF | Capacitor_SMD:C_0603_1608Metric | C5, C8, C9, C47 |
| 4 | 2K | Resistor_SMD:R_0402_1005Metric | R1, R2, R3, R91 |
| 4 | ?uF | Capacitor_SMD:C_0402_1005Metric | C16, C17, C18, C19 |
| 4 | SW2? | Button_Switch_SMD:SW_Push_1P1T_NO_6x6mm_H9.5mm | SW-L1, SW-L2, SW-R1, SW-R2 |
| 4 | SW3? | MM-Plus-RE:ABXY-Button | A1, B1, X1, Y1 |
| 3 | 0R | Resistor_SMD:R_0603_1608Metric | R17, R32, R86 |
| 3 | 100K | Resistor_SMD:R_0402_1005Metric | R5, R18, R54 |
| 3 | 10R | Resistor_SMD:R_0402_1005Metric | R39, R40, R81 |
| 3 | 1N5819W | Diode_SMD:D_SOD-123F | D4, D5, D6 |
| 3 | SKRTLAE010 | Button_Switch_SMD:SW_Push_1P1T-MP_NO_Horizontal_Alps_SKRTLAE010 | PWRON1, VOL-1, VOL+1 |
| 3 | SW1? | Button_Switch_SMD:SW_Push_1P1T_XKB_TS-1187A | MODE1, SELECT1, START1 |
| 2 | 10m | Resistor_SMD:R_0805_2012Metric | R11, R12 |
| 2 | 22uF | Capacitor_SMD:C_0603_1608Metric | C27, C71 |
| 2 | 5.1K | Resistor_SMD:R_0402_1005Metric | R97, R98 |
| 2 | MMBT3904 | Package_TO_SOT_SMD:TSOT-23 | Q1, Q2 |
| 2 | SW4? | MM-Plus-RE:DPAD-Button2 | LEFT1, RIGHT1 |
| 2 | SW4? | MM-Plus-RE:DPAD-Button1 | DOWN1, UP1 |
| 2 | UDT26A05L05UL | Package_TO_SOT_SMD:SOT-23-6 | U1, U2 |
| 1 | 0.47uF | Capacitor_SMD:C_0402_1005Metric | C23 |
| 1 | 10nF | Capacitor_SMD:C_0402_1005Metric | C34 |
| 1 | 1uF | Capacitor_SMD:C_0402_1005Metric | C31 |
| 1 | 2.4GHz | RF_Antenna:Texas_SWRA117D_2.4GHz_Right | ANT1 |
| 1 | 22K | Resistor_SMD:R_0402_1005Metric | R58 |
| 1 | 24MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | XTAL1 |
| 1 | 3.3K | Resistor_SMD:R_0402_1005Metric | R82 |
| 1 | 32.768KHz | Crystal:Crystal_SMD_3215-2Pin_3.2x1.5mm | XTAL2 |
| 1 | 47K | Resistor_SMD:R_0402_1005Metric | R87 |
| 1 | ALPU-FA | Package_TO_SOT_SMD:SOT-23-6 | U4 |
| 1 | AO3401A | Package_TO_SOT_SMD:TSOT-23 | Q3 |
| 1 | AXP223 | Package_DFN_QFN:QFN-68-1EP_8x8mm_P0.4mm_EP5.2x5.2mm | U8 |
| 1 | BL-M8188FU3 | MM-Plus-RE:BL-M8188FU3 | WIFI1 |
| 1 | Blue | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | GCT_MEM2075-00-140-01-A | MM-Plus-RE:GCT_MEM2075-00-140-01-A | TF1 |
| 1 | Green | LED_SMD:LED_0603_1608Metric | D3 |
| 1 | Hirose_FH12-20S-0.5SH_1x20-1MP_P0.50mm_Horizontal | Connector_FFC-FPC:Hirose_FH12-20S-0.5SH_1x20-1MP_P0.50mm_Horizontal | LCD1 |
| 1 | LM4890 | Package_SO:VSSOP-8_3.0x3.0mm_P0.65mm | U3 |
| 1 | Molex_PicoBlade_53261-0271 | Connector_Molex:Molex_PicoBlade_53261-0271_1x02-1MP_P1.25mm_Horizontal | BAT2 |
| 1 | Motor | MM-Plus-RE:Motor | MOTOR1 |
| 1 | PJ327F | MM-Plus-RE:PJ327F | J301 |
| 1 | PT4103E | Package_TO_SOT_SMD:SOT-23-6 | U5 |
| 1 | PinHeader_1x04_P2.54mm | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | CON1 |
| 1 | Red | LED_SMD:LED_0603_1608Metric | D2 |
| 1 | SSD202D | MM-Plus-RE:SSD202D | U7 |
| 1 | Speaker | MM-Plus-RE:Speaker | SPK1 |
| 1 | TSOT-23 | Package_TO_SOT_SMD:TSOT-23 | DNF1 |
| 1 | TYA2016108R2M10 | MM-Plus-RE:TYA2016108R2M10 | L6 |
| 1 | USB-C Receptacle | Connector_USB:USB_C_Receptacle_GCT_USB4110 | USB1 |
| 1 | W25Q128JVS | Package_SO:SOIC-8_5.275x5.275mm_P1.27mm | U6 |
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Questions
How big is the MM Plus RE PCB?
It measures 73.7 × 103 mm and has 2 copper layers, 1.6 mm thick.
What parts does the MM Plus RE use?
246 parts, built around the LM4890, W25Q128JVSIQ, UDT26A05L05UL and AXP223. 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 MM Plus RE KiCad files?
From the NeilKhera/Random-PCBs repository on GitHub, at the commit this page was made from: the board is MM-Plus-RE/MM-Plus-RE.kicad_pcb and its schematic G305-Mod/G305 Mod.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the MM Plus RE design in my own project?
Its repository states no licence, so its author keeps all rights: ask NeilKhera before reusing the design.