MSBE V3 BGA
About the MSBE V3 BGA PCB
MSBE V3 BGA is an open source Nordic nRF PCB design by Monty103, published on GitHub. It is a 4-layer board measuring 55.9 × 8.7 mm, with 85 components from 68 distinct parts.
Its main chip is the MPR121QR2, from the Nordic nRF family. Other key parts include the BMA400, NRF5340-QKAA-R, NPM1100-CAAA-R7 and MAX98357AEWL_T. By type, the board carries 39 capacitors, 20 resistors, 7 connectors, 5 ICs, 5 inductors and 3 speakers.
It belongs with the audio, iot & wireless and power & battery designs in this gallery.
From the project
An ultra-compact, low-power wearable audio device featuring bone-conduction technology, digital PDM voice capture, and multi-gesture touch controls.
Main components on the MSBE V3 BGA
MSBE V3 BGA bill of materials (BOM)
85 components, 68 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | BMA400 NPM1100-CAAA-R7 | NPM1100-CAAA-BGA25C40P5X5_207X207X52N | U1 |
| 1 | MPR121QR2 NRF5340-CLAA-R | NRF5340_CLAA_R | U2 |
| 1 | NRF5340-QKAA-R MPR121QR2 | MPR121 | U3 |
| 1 | NPM1100-CAAA-R7 BMA400 | QFN_BMA400_BOS | U4 |
| 1 | MAX98357AEWL_T | MAX98357A_BGA9N40P3X3_134X143X69N | U6 |
| 1 | 32MHZ 32MHz | ECS-160-10-37-JTN-TR_ECS | Y1 |
| 1 | 32.768KHZ 32.768kHz | Pad_2Pin_1.5x0.8mm | Y2 |
| 1 | USB_C_RECEPTACLE_USB2.0_16P High-V | Pad_4Pin_1.5x0.8mm | J1 |
| 1 | Low-V | Pad_4Pin_1.5x0.8mm | J2 |
| 1 | Low-V-TH | PinHeader_1x05_P2.54mm_Vertical | J3 |
| 1 | Touch Pads | Pad_3Pin_1.5x0.8mm | J4 |
| 1 | UART | Pad_3Pin_1.5x0.8mm | J5 |
| 1 | USB | Pad_4Pin_1.5x0.8mm | J6 |
| 1 | Prog | Pad_prog_4Pad | J7 |
| 1 | Antenna_Shield | Texas_SWRA117D_2.4GHz_Left | AE1 |
| 1 | Battery_Cell | Pad_3Pin_1.5x0.8mm | BT1 |
| 1 | SPH18R1LM4H-1-8 | MIC_SPH18R1LM4H_KNO | LS1 |
| 2 | Boneconduction | Pad_2Pin_1.5x0.8mm | LS2, LS3 |
| 2 | LED | LED_0402_1005Metric | D1, D2 |
| 1 | 2.2uH | L_0402_1005Metric | L1 |
Show 48 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 2.2NH 10uH | L_0402_1005Metric | L2 |
| 1 | 10UH 10uH | L_0402_1005Metric | L3 |
| 1 | 10UH N.M. | L_0402_1005Metric | L4 |
| 1 | 2.2UH 2.2nH | L_0402_1005Metric | L5 |
| 3 | 100NF 30pF | C_0402_1005Metric | C1, C10, C11 |
| 1 | 0.1UF 30pF | C_0402_1005Metric | C2 |
| 1 | 4.7uF | C_0402_1005Metric | C3 |
| 2 | 10uF | C_0402_1005Metric | C4, C5 |
| 1 | 0.7PF 30pF | C_0402_1005Metric | C6 |
| 1 | 12PF 10uF | C_0402_1005Metric | C7 |
| 1 | 12PF 12pF | C_0402_1005Metric | C8 |
| 1 | 0.1UF 12pF | C_0402_1005Metric | C9 |
| 3 | 1UF 1uF | C_0402_1005Metric | C12, C15, C20 |
| 2 | 1UF 100nF | C_0402_1005Metric | C13, C17 |
| 1 | 4.7UF 100nF | C_0402_1005Metric | C14 |
| 1 | 4.7UF 2.2nF | C_0402_1005Metric | C16 |
| 5 | 100NF 100nF | C_0402_1005Metric | C18, C31, C34, C35, C36 |
| 1 | 2.2NF 100nF | C_0402_1005Metric | C19 |
| 1 | 4.7UF 1uF | C_0402_1005Metric | C21 |
| 1 | 0.1uF | C_0402_1005Metric | C22 |
| 1 | 0.1UF N.M. | C_0402_1005Metric | C23 |
| 1 | N.M. | C_0402_1005Metric | C24 |
| 2 | 10UF 4.7uF | C_0402_1005Metric | C25, C27 |
| 1 | 10UF 100nF | C_0402_1005Metric | C26 |
| 1 | 10UF N.M. | C_0402_1005Metric | C28 |
| 1 | 0.7pF | C_0402_1005Metric | C29 |
| 1 | 100NF 1uF | C_0402_1005Metric | C30 |
| 1 | 47UF 0.1uF | C_0402_1005Metric | C32 |
| 2 | 100NF 0.1uF | C_0402_1005Metric | C33, C37 |
| 1 | 100NF 10uF | C_0603_1608Metric | C38 |
| 1 | 47uF | C_0603_1608Metric | C39 |
| 1 | 75K 1K5 | R_0402_1005Metric | R1 |
| 2 | 5K1R 1K5 | R_0402_1005Metric | R2, R5 |
| 1 | 5K1R 1K8 | R_0402_1005Metric | R3 |
| 1 | 2R2 1K8 | R_0402_1005Metric | R4 |
| 1 | 10K 1K8 | R_0402_1005Metric | R6 |
| 2 | 1K5R | R_0402_1005Metric | R7, R8 |
| 2 | 4K7 1K5 | R_0402_1005Metric | R9, R10 |
| 1 | 1K5R 5K1R | R_0402_1005Metric | R11 |
| 1 | 1K5R 10K | R_0402_1005Metric | R12 |
| 1 | 1K8 | R_0402_1005Metric | R13 |
| 1 | 1K5 1K8 | R_0402_1005Metric | R14 |
| 1 | 1K5 4.7k | R_0402_1005Metric | R15 |
| 1 | 1K8 4.7k | R_0402_1005Metric | R16 |
| 1 | 1K8 75k | R_0402_1005Metric | R17 |
| 1 | 1K5 2R2 | R_0402_1005Metric | R18 |
| 1 | 1K8 N.C. | R_0402_1005Metric | R19 |
| 1 | 680k | R_0402_1005Metric | R20 |
MSBE V3 BGA design files
The KiCad project lives in the Monty103/MSBE_v3 repository on GitHub; these links point at the commit this page was built from.
MSBE V3 BGA: common questions
What microcontroller does the MSBE V3 BGA use?
The MSBE V3 BGA is built around the MPR121QR2, from the Nordic nRF family.
How big is the MSBE V3 BGA PCB?
The MSBE V3 BGA measures 55.9 × 8.7 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the MSBE V3 BGA?
85 components, from 68 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the MSBE V3 BGA design files?
From the Monty103/MSBE_v3 repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the MSBE V3 BGA design in my own project?
The repository has no license, so all rights stay with Monty103. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the MSBE V3 BGA without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug Nordic nRF firmware against it before you order a PCB.
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