4 layers27 × 27 mm
O32controller
qwertpas/O32controller
Miniature closed-loop controller for brushless DC motors
88 parts37MIT
4 layers67 × 51 mm
BC Heater
rasusmilch/BC_Heater- Size
- 67 × 51 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 132
- Nets
- 84
- Pads
- 436
- Tracks, vias
- 1,350, 312
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 19 Jun 2025
- Updated
- 19 Jun 2025
Overview
BC Heater is an open-source printed circuit board by rasusmilch, from the rasusmilch/BC_Heater repository on GitHub. It is a 4-layer board of 67 × 51 mm with 132 parts on 84 nets, routed with 1,350 tracks and 312 vias.
It is built around the AP7370-33FDC, FM24CL16B-GTR and ESD5Z3V3, with the BSS806NEH6327XTSA1, ERA-3ARB4751V and ESDA17P20-1F2 among its other parts. Its parts include 41 resistors, 33 diodes, 26 capacitors, 11 transistors and 5 connectors. It belongs with the STM32 boards of this library.
Main components
12
AP7370-33FDC
UDFN2020-6-40℃~+125℃@(Tj) 1 1.5uA 18V 3.3V 350mA 500mV@(100mA) Fixed Over Temperature Protection、Reverse connection protection、Short Circuit Protection Positive UDFN2020-6 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSDiodes IncorporatedVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
FM24CL16B-GTR
SOIC-8-40℃~+85℃ 100,000,000,000,000 Cycles 151 Years 16Kbit 1MHz 2.7V~3.65V 300uA 3uA I2C SOIC-8 FRAM ROHSInfineon TechnologiesFRAM
ESD5Z3V3
SOD-523-55℃~+150℃ 1 105W 105pF 14V 3.3V 5V 7.5A 900nA ESD IEC 61000-4-2 Unidirectional SOD-523 ESD and Surge Protection (TVS/ESD) ROHSMDDESD And Surge Protection (TVS/ESD)
BSS806NEH6327XTSA1
SOT-23-55℃~+150℃@(Tj) 1 N-channel 1.7nC@2.5V 2.3A 20V 500mW 529pF@10V 57mΩ@2.3A,2.5V 750mV@11uA SOT-23 MOSFETs ROHSInfineon TechnologiesMOSFETs
ERA-3ARB4751V
0603-55℃~+155℃ 100mW 4.75kΩ 75V Thin Film Resistor ±0.1% ±10ppm/℃ 0603 Chip Resistor - Surface Mount ROHSPanasonicChip Resistor - Surface Mount
ESDA17P20-1F2
SOD-882T-55℃~+150℃ 1 15V 16.7V 190pF 23V 25A@8/20us 600W@8/20us 80nA ESD IEC 61000-4-2 Unidirectional SOD-882T ESD and Surge Protection (TVS/ESD) ROHSSTMicroelectronicsESD And Surge Protection (TVS/ESD)
B3S-1100P
-- Tactile Switches ROHSOmronTactile Switches
SS2040LL_R1_00001
SOD-123FL-50℃~+125℃ 1 Independent 2A 40V 450mV@2A 500uA@40V 50A SOD-123FL Schottky Diodes ROHSPANJIT InternationalSchottky Diodes
GG060305100N2P
060312V 5V 7.5V TVS Unidirectional 0603 ESD and Surge Protection (TVS/ESD) ROHSKyocera AVXESD And Surge Protection (TVS/ESD)
SI4435FDY-T1-GE3(ES)
SOP-8SOP-8 MOSFETs ROHSElecSuperMOSFETs
SMD0805B100TFT
0805-40℃~+85℃ 1.5mm 1.5mm 1.95A 1A 2.2mm 230mΩ 300ms 40A 40mΩ 600mW 6V 0805 Resettable Fuses ROHSBrightkingResettable Fuses
SRF2012-900YA
SMD-4P,2x1.2mm-40℃~+125℃ 100V 10MΩ 2 250V 300mΩ 400mA 90Ω@100MHz SMD-4P,2x1.2mm Common Mode Filters ROHSBournsCommon Mode Filters
Parts
132| Qty | Value | Footprint | References |
|---|---|---|---|
| 22 | 100nF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C2, C14, C15, C16, C17, C18, C19, C20, C21, C22, C23, C24, C25, C26, C27 +6 |
| 18 | ESD5Z3V3 | Diode_SMD:D_SOD-523 | D4, D5, D6, D7, D10, D11, D12, D13, D14, D15, D16, D17, D32, D33, D34, D35 +2 |
| 12 | 100K | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2, R9, R26, R28, R30, R32, R34, R38, R39, R40, R50 |
| 10 | 1K | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R11, R25, R27, R29, R31, R33, R35, R36, R37, R51 |
| 10 | BSS806NEH6327XTSA1 | Package_TO_SOT_SMD:SOT-23-3 | Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9, Q14 |
| 9 | ERA-3ARB4751V | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R15, R16, R17, R18, R20, R21, R22, R23, R24 |
| 9 | ESDA17P20-1F2 | Diode_SMD:D_SOD-882 | D19, D20, D21, D22, D23, D24, D26, D27, D30 |
| 5 | B3S-1100P | Button_Switch_SMD:SW_SPST_B3S-1100 | SW1, SW2, SW3, SW4, SW6 |
| 4 | SS2040LL_R1_00001 | Diode_SMD:D_SOD-123F | D1, D2, D3, D18 |
| 2 | 1uF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C10, C11 |
| 2 | 30pF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C6, C7 |
| 2 | 4K7 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R4, R5 |
| 2 | 5K1 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R86, R87 |
| 2 | GG060305100N2P | Diode_SMD:D_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D28, D29 |
| 2 | Jumper_3_Open | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | JP1, JP2 |
| 1 | 10K | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3 |
| 1 | 1K5 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R12 |
| 1 | 1M | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R7 |
| 1 | 200K | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R6 |
| 1 | 330R | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R8 |
| 1 | 47K | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R19 |
| 1 | AP7370-33FDC | Package_DFN_QFN:DFN-6-1EP_2x2mm_P0.65mm_EP1.01x1.7mm | U7 |
| 1 | Battery | Personal:TerminalBlock_Onshore-2_P2.54mm | BT2 |
| 1 | FM24CL16B-GTR | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U12 |
| 1 | Heaters | Connector_PinHeader_2.54mm:PinHeader_2x06_P2.54mm_Vertical | J3 |
| 1 | INA260 | Package_SO:TSSOP-16_4.4x5mm_P0.65mm | U5 |
| 1 | Jumper_2_Open | TestPoint:TestPoint_2Pads_Pitch2.54mm_Drill0.8mm | JP3 |
| 1 | OLED | Personal:OLED_SSD1306_I2C_128x64_0.96in | J2 |
| 1 | SI4435FDY-T1-GE3 | Personal:SI4435 | Q10 |
| 1 | SMD0805B100TFT | Fuse:Fuse_0805_2012Metric_Pad1.15x1.40mm_HandSolder | F2 |
| 1 | SRF2012-900YA | Personal:IND_BOURNS_SRF2012A | L1 |
| 1 | STM32F103C8Tx | Package_QFP:LQFP-48_7x7mm_P0.5mm | U1 |
| 1 | SWD | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J1 |
| 1 | Thermistors | Connector_PinHeader_2.54mm:PinHeader_2x06_P2.54mm_Vertical | J5 |
| 1 | USB_C_Receptacle_USB2.0_16P | Personal:GCT_USB4105-GF-A | J12 |
| 1 | XL2ED8K5SI-111YXC-8M | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm_HandSoldering | Y2 |
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Questions
How big is the BC Heater PCB?
It measures 67 × 51 mm and has 4 copper layers, 1.6 mm thick.
What parts does the BC Heater use?
132 parts, built around the AP7370-33FDC, FM24CL16B-GTR, ESD5Z3V3 and BSS806NEH6327XTSA1. 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 BC Heater KiCad files?
From the rasusmilch/BC_Heater repository on GitHub, at the commit this page was made from: the board is Kicad/BC_Heater/BC_Heater.kicad_pcb and its schematic Kicad/BC_Heater/BC_Heater.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the BC Heater design in my own project?
Its repository states no licence, so its author keeps all rights: ask rasusmilch before reusing the design.