NB3 Charger
About the NB3 Charger PCB
NB3 Charger is an open source PCB design by NoBlackBoxes, published on GitHub under the CC-BY-NC-4.0 license. It is a 2-layer board measuring 65 × 150 mm, with 55 components from 29 distinct parts.
Other key parts include the Voltage_Regulator_AP64501 and BQ25172DSGR. By type, the board carries 20 capacitors, 11 resistors, 6 connectors, 6 battery holders, 3 diodes and 2 ICs.
It belongs with the power & battery designs in this gallery.
From the project
A course for brains interested in brains (not tools interested in tools)
PCB design and fabrication for NB3 charger, a 5V/3A DC to DC power supply and NiMH battery charger
Main components on the NB3 Charger
NB3 Charger bill of materials (BOM)
55 components, 29 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | Voltage_Regulator_AP64501 | Voltage_Regulator_AP64501 | U1 |
| 1 | BQ25172DSGR | NiMH_Charger_BQ25172DSGR | U2 |
| 1 | PMOS_FDC658AP | PMOS_SMD_FDC658AP | Q1 |
| 1 | DC-005-A200 Barrel_Jack-DC-5.5-2.1 | Barrel_Jack_TH_XUNPU_DC-005-A200 | J1 |
| 1 | B4B-PH-K-S | Connector_B4B-PH-K-S(LF)(SN) | J2 |
| 4 | Conn_01x02_Pin | PinHeader_1x02_P2.54mm_Vertical | J3, J4, J5, J6 |
| 6 | 1028 | AA_Battery_Holder_BH-AA-A5BJ012 | BT1, BT2, BT3, BT4, BT5, BT6 |
| 2 | Schottky_PMEG3050EP,115 | Schottky_PMEG3050EP,115 | CR1, CR2 |
| 2 | SW_SPDT | Switch_SPDT_SMD_Slide_JS102011JCQN | SW1, SW2 |
| 1 | NTCG163JF103FT1 | Thermistor_NTC_NTCG163JF103FT1 | T1 |
| 1 | LED (Green) | LED_0603_1608Metric | D1 |
| 1 | LED (Red) | LED_0603_1608Metric | D2 |
| 1 | LED (Yellow) | LED_0603_1608Metric | D3 |
| 1 | SRN6045TA-2R2Y | L_Bourns_SRN6045TA | L1 |
| 10 | 10uF 35v | C_0805_2012Metric | C1, C2, C3, C4, C5, C6, C17, C18 +2 |
| 2 | 100nF | C_0402_1005Metric | C7, C8 |
| 2 | 1nF | C_0402_1005Metric | C9, C11 |
| 1 | 1.2nF | C_0402_1005Metric | C10 |
| 4 | 10uF | C_0805_2012Metric | C12, C13, C14, C15 |
| 1 | 100uF | CP_EIA-7343-31_Kemet-D | C16 |
Show 9 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 5.6k | R_0402_1005Metric | R1, R7 |
| 1 | 10R | R_0402_1005Metric | R2 |
| 1 | 20K 1% | R_0402_1005Metric | R3 |
| 1 | 12K 1% | R_0402_1005Metric | R4 |
| 1 | 2.2K 1% | R_0402_1005Metric | R5 |
| 1 | 1.6k | R_0402_1005Metric | R6 |
| 1 | 3.6K 1% | R_0402_1005Metric | R8 |
| 1 | 1.5K 1% | R_0402_1005Metric | R9 |
| 2 | 15K 1% | R_0402_1005Metric | R10, R11 |
NB3 Charger design files
The KiCad project lives in the NoBlackBoxes/LastBlackBox repository on GitHub; these links point at the commit this page was built from.
NB3 Charger: common questions
How big is the NB3 Charger PCB?
The NB3 Charger measures 65 × 150 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the NB3 Charger?
55 components, from 29 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 NB3 Charger design files?
From the NoBlackBoxes/LastBlackBox 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 NB3 Charger design in my own project?
It is published under CC-BY-NC-4.0, which limits how it may be reused; read the license before building on it.
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