2 layers101.6 × 50.8 mm
Light switch
NguyenThanhHuy-debug/PCB_Real-Time-Power-Monitoring-System-Development-Light-Switch
PCBReal-Time-Power-Monitoring-System-Development-Light-Switch — a software project built with modern tooling.
142 parts2
BL0942
BL
-40℃~+85℃ 0.2% 1.218V 10mW 2 3V~3.6V 3mA 4000:1 4MHz Pulse output、Fault detection、Programmable gain、Built-in reference source、Energy accumulation engine、Built-in digital filter SPI、UART Single-Phase Energy Metering IC SSOP-10-150mil Energy Metering ROHS
Extended
- Category
- Energy Metering
- Package
- SSOP-10-150mil
- Pins
- 14
Overview
The BL0942 is an energy Metering made by BL in a SSOP-10-150mil package with 14 pins. -40℃~+85℃ 0.2% 1.218V 10mW 2 3V~3.6V 3mA 4000:1 4MHz Pulse output、Fault detection、Programmable gain、Built-in reference source、Energy accumulation engine、Built-in digital filter SPI、UART Single-Phase Energy Metering IC SSOP-10-150mil Energy Metering ROHS.
PCBKit's library has its KiCad symbol (EasyEDA_Cloud:BL0942_C2909509, from EasyEDA) and its footprint (EasyEDA_Cloud:TSSOP-14_L5.0-W4.4-P0.65-LS6.4-BL, from EasyEDA), ready for a KiCad board. JLCPCB lists it (part C2837510). 9 open-source boards in 9 repositories on GitHub use it.
Symbol
Footprint
From the datasheet
6- Supply, least
- 3 V · VDD, recommended operating min · p. 11
- Supply, most
- 3.6 V · VDD, recommended operating max · p. 11
- Takes working
- 3 mA · VDD, operating current typical at 3.3 V · p. 11
- Supply, absolute maximum
- 4 V · VDD, absolute max at 25 °C · p. 12
- Works from
- -40 °C · Operating temperature min · p. 12
- Works up to
- 85 °C · Operating temperature max · p. 12
Specifications
30| Parameter | Conditions | As printed | Page |
|---|---|---|---|
| 电源 VDD VDD | min 3 · max 3.6 V | 11 | |
| 功耗 Iop | VDD=3.3V | typ 3 mA | 11 |
| 有功电能测量精度（大信号） | 30A~100mA 输入@ 1mohm 采样电阻 | typ 0.2 % | 11 |
| 有功电能测量精度（小信号） | 100mA~50mA 输入@ 1mohm 采样电阻 | typ 0.4 % | 11 |
| 有功电能测量精度（微小信号） | 50mA~10mA 输入@ 1mohm 采样电阻 | typ 0.6 % | 11 |
| 有效值测量精度（大信号） | 30A~100mA 输入@ 1mohm 采样电阻 | typ 0.2 % | 11 |
| 有效值测量精度（小信号） | 100mA~50mA 输入@ 1mohm 采样电阻 | typ 2 % | 11 |
| 有效值测量精度（微小信号） | 50mA~10mA 输入@ 1mohm 采样电阻 | typ 6 % | 11 |
| 快速有效值响应时间 | 50Hz，可设置为周波/半周波 | min 10 · max 160 mS | 11 |
| 快速有效值响应时间 | 60Hz，可设置为周波/半周波 | min 8.3 · max 133 mS | 11 |
| 过零信号输出延时 | typ 570 uS | 11 | |
| 通道间相角引起测量误差（容性） PF08err | 相位超前 37（PF=0.8） | max 0.5 % | 11 |
| 通道间相角引起测量误差（感性） PF05err | 相位滞后 60（PF=0.5） | max 0.5 % | 11 |
| AC 电源抑制 （输出频率幅度变化） ACPSRR | IP/N=100mV | max 0.1 % | 11 |
| DC 电源抑制 （输出频率幅度变化） DCPSRR | VP/N=100mV | max 0.1 % | 11 |
| 模拟输入电平（电流） | 电流差分输入（峰值） | max 42 mV | 12 |
| 模拟输入电平（电压） | 电压差分输入（峰值） | max 100 mV | 12 |
| 模拟输入阻抗 | typ 370 kΩ | 12 | |
| SEL 下拉电阻 | SEL（下拉） | typ 56.9 kΩ | 12 |
| 模拟输入带宽 | （-3dB） | typ 3.5 kHz | 12 |
| 内部电压基准 Vref | typ 1.218 V | 12 | |
| 逻辑输入高电平 | VDD=3.3V±5% | min 2.6 V | 12 |
| 逻辑输入低电平 | VDD=3.3V±5% | max 0.8 V | 12 |
| 逻辑输出低电平 | VDD=3.3V±5%; IOL=5mA | max 0.5 V | 12 |
| 电源电压 VDD VDD | T = 25 ℃ | min -0.3 · max 4 V | 12 |
| 模拟输入电压（相对于 GND） IP,VP | T = 25 ℃ | min -4 · max 4 V | 12 |
| 数字输入电压（相对于 GND） A1,A2_NCS,SEL,SCLK_BPS,RX/SDI | T = 25 ℃; maximum VDD+0.3 V | min -0.3 V | 12 |
| 数字输出电压（相对于 GND） CF1,CF2,ZX,TX/SDO | T = 25 ℃; maximum VDD+0.3 V | min -0.3 V | 12 |
| 工作温度 Topr | min -40 · max 85 ℃ | 12 | |
| 贮藏温度 Tstr | min -55 · max 150 ℃ | 12 |
Parameters
14- -3db Bandwidth
- 3.5kHz
- Clock Frequency
- 4MHz
- Current - Supply
- 3mA
- Dynamic Range
- 4000:1
- Features
- Programmable gain；Built-in digital filter；Built-in reference source；Fault detection；Pulse output；Energy accumulation engine
- Interface
- SPI；UART
- Meter Type
- Single-Phase Energy Metering IC
- Number of Channels
- 2
- Operating Temperature
- -40℃~+85℃
- Pd - Power Dissipation
- 10mW
- Tolerance
- 0.2%
- Voltage - Supply
- 3V~3.6V
- Voltage - Supply(Absolute Max)
- 4V
- Voltage Reference Value
- 1.218V
Order codes
3- BL0942LCSC C2837510
- BL0942LCSC C2909509
- BL0942LCSC C56267182
Pinout
14| Pin | Name | Type |
|---|---|---|
| 1 | VDD | Unspecified |
| 2 | IP | Unspecified |
| 3 | IN | Unspecified |
| 4 | VP | Unspecified |
| 5 | GND | Unspecified |
| 6 | A1 | Unspecified |
| 7 | A2_NCS | Unspecified |
| 8 | CF2 | Unspecified |
| 9 | ZX | Unspecified |
| 10 | CF1 | Unspecified |
| 11 | SEL | Unspecified |
| 12 | SCLK_BPS | Unspecified |
| 13 | RX/SDI | Unspecified |
| 14 | TX/SDO | Unspecified |
Open-source boards using it
All 9- 4 layers102.4 × 83.1 mm
- 2 layers
- 2 layers102.1 × 82.7 mm
PLC Electiva
JosueHerrera05/Josue_Herrera_Electiva_2026_C2
Repositorio Electíva Diseño Mecatrónico 2026-C2
198 partsMIT - 4 layers34.5 × 34.5 mm
- 4 layers102 × 104.8 mm
- 4 layers102.4 × 83.1 mm
PLC4UNI GC1
paulmartinezcuenta/PLC4UNI
Development of programmable logic controller, product for mechatronic design.
179 partsMIT - 2 layers60 × 40 mm
Relaymini c3
AskAlice/home-automation-pcbs
Daily Kimi-generated home automation PCB designs with KiCad sources, 3D models, and rendered documentation
39 parts1MIT
Show this part on your page
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Is there a KiCad symbol and footprint for the BL0942?
Yes. The symbol is EasyEDA_Cloud:BL0942_C2909509 and the footprint EasyEDA_Cloud:TSSOP-14_L5.0-W4.4-P0.65-LS6.4-BL, both drawn on this page. PCBKit places them on a board for you when you design with it.
What package is the BL0942?
SSOP-10-150mil, with 14 pins. Its footprint is drawn on this page.
Where is the BL0942 datasheet?
BL publishes it: the Datasheet link on this page opens it.
Where can I order the BL0942?
JLCPCB lists it as part C2837510, with 0 in stock; the sellers' links on this page open their listings.
What can replace the BL0942?
Parts like it in the library: the BL0940 by BL, the BL0930F by BL, the SSP1840 by Shanghai Siproin Microelectronics and the SSP1842 by Shanghai Siproin Microelectronics. Check their datasheets: a part that fits the footprint may still differ in its ratings.
Which open-source boards use the BL0942?
9 boards in 9 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
Parts like it
8
BL0940
TSSOP-14-40℃~+85℃ 0.2% 1.218V 10mW 2 3.5kHz 3V~3.6V 3mA 4000:1 4MHz Pulse output、Fault detection、Digital calibration and compensation、Built-in temperature sensor、Programmable gain、Built-in reference source、Energy accumulation engine、Built-in digital filter SPI、UART Single-Phase Energy Metering IC TSSOP-14 Energy Metering ROHSBLEnergy Metering
BL0930F
SOP-16-40℃~+85℃ 10mW 2 2.5mA 3.3V 3000:1 Pulse output、Digital calibration and compensation、Programmable gain、Built-in reference source、Energy accumulation engine SPI、UART SOP-16 Energy Metering ROHSBLEnergy MeteringSSP1840
TSSOP-14-40℃~+85℃ 0.2% 1.218V 10mW 2 3.5kHz 3V~3.6V 3mA 4000:1 4MHz Pulse output、Fault detection、Digital calibration and compensation、Built-in temperature sensor、Programmable gain、Built-in reference source、Energy accumulation engine、Built-in digital filter SPI、UART Single-Phase Energy Metering IC TSSOP-14 Energy Metering ROHSShanghai Siproin MicroelectronicsEnergy Metering
SSP1842
SSOP-10-150mil-40℃~+85℃ 0.0035MHz 0.2% 1.218V 10mW 2 3V~3.6V 3mA 4000:1 4MHz Pulse output、Fault detection、Programmable gain、Built-in reference source SPI、UART Single-Phase Energy Metering IC SSOP-10-150mil Energy Metering ROHSShanghai Siproin MicroelectronicsEnergy Metering
BL0939
SOP-16-40℃~+105℃ 0.2% 1.218V 10mW 3 3.5kHz 3V~3.6V 3mA 4000:1 4MHz Pulse output、Fault detection、Digital calibration and compensation、Built-in temperature sensor、Programmable gain、Built-in reference source、Energy accumulation engine、Built-in digital filter SPI、UART Single-Phase Energy Metering IC SSOP-20-150mil Energy Metering ROHSBLEnergy MeteringSSP1839
SOP-16-40℃~+85℃ 0.2% 1.218V 3 3.5kHz 3V~3.6V 3mA 4000:1 4MHz SPI、UART Single-Phase Energy Metering IC SOP-16 Energy Metering ROHSShanghai Siproin MicroelectronicsEnergy Metering
MCP39F521T-E/MQ
QFN-28-EP(5x5)-40℃~+125℃ 13mA 2 2.7V~3.6V 4000:1 Digital calibration and compensation、Programmable gain、Built-in reference source、Energy accumulation engine I2C Single-Phase Energy Metering IC QFN-28-EP(5x5) Energy Metering ROHSMicrochip TechnologyEnergy Metering
MCP39F511A-E/MQ
QFN-28(5x5)-40℃~+125℃ 0.1% 1.2V 13mA 2 2.7V~3.6V 4000:1 4MHz 7ppm/℃ Pulse output、Interrupt control、Digital calibration and compensation、Programmable gain、Built-in reference source、Energy accumulation engine Single-Phase Energy Metering IC UART QFN-28(5x5) Supervisor and Reset ICs ROHSMicrochip TechnologyEnergy Metering