Reference: RBD-1354
Jumper Wire Single 20cm
Length: 8 inches/20 CM (Long) Material: Copper Plated Pin Spacing: 2.54mm.
Reference: RBD-1354
Length: 8 inches/20 CM (Long) Material: Copper Plated Pin Spacing: 2.54mm.
Reference: RBD-0351
Contactless transmission of data and supply energy (no battery needed) Operating distance: Up to 100mm (depending on antenna geometry) RoboticsBD Operating frequency: 13.56MHz Data transfer: 106 kbit/s Data integrity: 16 Bit CRC, parity, bit coding bit counting Anticollision Typical ticketing transaction: <100 ms ( including backup management)...
Reference: 0245
Choose your desire Resistor value from below:
Reference: 0031
3 Types Available (Please select from option) 1. Male to Male 2. Male to Female 3. Female-Female
Reference: RBD-0768
Size: 5mm Color: RED Head Shape: Round Lens Appearance: Transparent
Reference: RBD-0761
Breadboard friendly Mounting Style: Through Hole Mounting Direction: Vertical
Reference: 1353
Length: 12.5 inches/30 CM (Long) Material: Copper Plated Pin Spacing: 2.54mm.
This MOSFET module with optoisolation uses the LR7843 N-Channel logic compatible MOSFET with ultra low Rds(on) for moderate to higher current low-side switching applications of up to 15A continuous.
N-Channel logic compatible MOSFET with optoisolation and ultra low 3.3mΩ Rds(on)
This MOSFET module with optoisolation uses the LR7843 N-Channel logic compatible MOSFET with ultra low Rds(on) for moderate to higher current low-side switching applications of up to 15A continuous.
The modules utilizes the LR7843 N-channel MOSFET that has an ultra low Rds(on) resistance of 3.3mΩ typical.
These modules support about 15A of continuous current with a load voltage of 12V. If driven with PWM, the maximum peak current can be greater up to 30A or more.
The design of these modules includes an optoisolator on the input so the input is biased from the output load voltage and is independent of logic levels used for the drive signal. A 3.3V input will drive as much current as a 5V input for instance.
Note that the module does not have a fly-back diode on the board. If using the module with inductive loads, an external fly-back diode should be used to avoid possible damage.
The module includes a PC817 optoisolator which provides electrical isolation between the high powered MOSFET side and the logic signals used to control the module. If something goes wrong and you burn up the MOSFET, it should not damage the MCU being used to control it.
The MCU PWM input to the module drives the internal LED side of the optoisolator. This input includes a 1K ohm series current limiting resistor to keep the current through the LED at safe levels which allows the input to be driven by up to a 20V input or even higher if you are not using an MCU.
When the PWM input signal is low or disconnected, the internal LED in the optoisolator is off which in turn keeps the phototransistor output turned off. With the phototransistor off, the gate of the MOSFET is pulled to ground by a 4.7K resistor. This keeps the MOSFET turned off and the load is disconnected from ground and disbled.
A logic high on the PWM input turns on the internal optoisolator LED which turns on the phototransistor. This creates a voltage divider composed primarily of two 4.7K resistors. This biases the gate at 50% of the power supply voltage which turns on the MOSFET. If a 12V power supply is used, the gate will be at 6V.
Since the maximum gate voltage available to turn on the MOSFET is 50% of the power supply voltage, that limits the power supply to a minimum of about 6V. Power dissipation in the MOSFET will be higher with lower power supply voltages and a minimum power supply of 9V is recommended if trying to draw more than a few amps through the module.
When the MOSFET conducts, the load is connected to ground to complete the circuit and the load is powered up. This also provides a ground for the on-board LED which lights to indicate that the MOSFET is turned on. A 4.7K resistor limits current through the on-board LED to safe levels over the 6-36V operating range.
The module requires 3 connections. A logic signal to turn the MOSFET on/off; a DC power supply to power the device (load) being controlled and finally the load itself. Connectors are provided that can be soldered to be the board, but these connections can also be made by direct wiring if desired.
Logic Signal Connections: The 2-pin connector on the right side is for making connections to the MCU. It has two holes on 4mm centers which support a 2 position screw terminal as well as two holes on 0.1″ centers that can alternatively support a standard male header which may be handy in a breadboard setup. The pins are labeled PWM for the signal and GND for the signal ground.
DC Load Power Supply: is connected to the 3-pin screw terminals marked + / LOAD / – on the back of the module. The positive lead of the power supply connects to + and the ground connection is hooked up to –. The module supports a load power supply of 6-28VDC
Load: The load which is being driven is connected to the screw terminals marked + and Load on the back of the module. The positive lead of the load connects to the + terminal and the negative lead of the load connects to the center load ground terminal.
The signal ground and the load ground connections are not connected together on the module due to the optoisolator being used to provide isolation between the MOSFET power circuit and the MCU.
1 x 2 Screw Terminal / Header (Logic Signal Input)
1 x 3 Screw Terminal (Load Power Supply Connections)
1 x 3 Screw Terminal (Load Connections)
Physical Mounting: There are two 2mm diameter holes at the signal end of the board spaced 12mm apart if it is desired to physically mount it.
These modules work well for basic ON/OFF operation such as for driving a solenoid or PWM control such as for dimming an array of LEDs and can handle a surprising amount of power given the small size. It is also possible to parallel these modules to further increase the power handling capability. Though the maximum current spec for the MOSFET is 161A, do not expect to run 161A through this small module as it will quickly overheat due to minimal heatsink capability of the small PCB.
One important point to take note of is that if an inductive load is being controlled, an external fly-back diode should be used to prevent possible damage when the load is switched off.
The chart below shows some example temperature measurements of the MOSFET with a load varying from 2.5A to 20A @ 12V. The logic drive signal varies from 100% duty cycle (always on) to 50% duty cycle or 25% duty cycle. The measurements are being taken with no airflow over the module and an ambient temperature of 22C. Since a 12V power supply is being used, the gate voltage is around 6V which gives pretty good performance.
In general, you should keep the MOSFET under about 100°C to keep it happy. For long-term use, 80°C or lower would be a better target.
Load Amps | 12V Input @ 100% duty cycle | 12V Input @ 50% duty cycle | 12V Input @ 25% duty cycle |
5A | 34°C | 30°C | |
10A | 56°C | 39°C | 34°C |
15A | 97°C | 59°C | 40°C |
20A | 88°C | 60°C |
Maximum Ratings | ||
VDS | Drain-Source Voltage | 30V max (28V recommended) |
ID | Drain Current Max (Continuous) | 15A @ 12V |
RDS(on) | Drain-Source On-Resistance | 3.3mΩ |
Dimensions | (L x W x H) | 35 x 16 x 14mm (1.38 x 0.63 x 0.55″) |
Country of Origin | China | |
Datasheet | International Rectifier | IRLR7843 |
The latest price of LR7843 MOSFET Switch Control Module in Bangladesh is BDT 130 You can buy the LR7843 MOSFET Switch Control Module at best price from our RoboticsBD or visit RoboticsBD Office.
Please note that the product information provided on our website may not be entirely accurate as it is collected from various sources on the web. While we strive to provide the most up-to-date information possible, we cannot guarantee its accuracy. We recommend that you always read the product labels, warnings, and directions before using any product. |
Product Images are shown for illustrative purposes only and may differ from the actual product. |
Reference: RBD-2296
Features:This product is a booster coil production suite, the circuit is simple and reliable, with professional line drawings, electronic research convenience enthusiastsUses: high school science experiment, electronic equipment, negative ion generator, scientific small production. This circuit is generated when the stable high-frequency arc, elevated...
Reference: RBD-2223
Input Voltage: 3 V ~ 20 V Input Current: 5mA Output Voltage: 5 V ~ 35 V Output Current: 5A Item Dimensions: 46 * 25 * 18mm
Reference: RBD-0987
Compatible with Arduino NANO All digital and analog pins breakout Compact size; External power supply current support Leads all pins out, convenient for wiring and doing experiments.
Reference: RBD-2213
Operating voltage (v):DC 8 – 24V Chipset:TPA3118 Power output:60W Material:FR4
Reference: RBD-2331
This is a rotary potentiometer module consisting of 8 adjustable potentiometers and the communication method is IIC interface. The module mainly uses 10K adjustable resistors. By rotating the potentiometer to change the size of the resistance value, then build a circuit to convert the change of resistance value to voltage change, read the output value...
Reference: RBD-2084
Power supply: 3 – 5V Good sensitivity The output format: Digital switching output (0 and 1) The comparator output signal is clean, good waveform, driving ability, more than 15mA. A fixed bolt holes for easy installation. Using a wide voltage LM393 comparator.
Reference: RBD-2249
Made From High-Quality Materials. Electronic High-Frequency Oscillations (2.4MHz). Material: Ceramic, Wire Diameter: Atomizer: 2cm/0.79in; Sealing ring: 2.5cm/0.98in
Reference: RBD-0439
Bluetooth Protocol: Bluetooth Specification V4.0 BLE USB Protocol: USB V2.0 Operating Frequency: 2.4GHz ISM band Modulation Mode: GFSK (Gaussian Frequency Shift Keying) Transmitting Power: ≤4dBm Sensitivity: ≤-84dBm at 0.1% BER It’s easy to use and completely encapsulated. You can set it as slave or master. You can use AT command set the baud rate....
Reference: RBD-2207
2 sine wave and 2 square wave output. AD9850: 0-40MHz. After the 20-30MHz frequency harmonics increases, the waveform will be less and less clean. Low-pass filter with 70MHz, so the waveform better than SN. Parallel and serial data input can be selected via a jumper.
Reference: RBD-2134
433Mhz Wireless Receiver Learning Code EV1527 Decoding Module 4-channel output with a learning button Compatible with Arduino/ARM/MCU Ideal for wireless power switch sockets, remote controls, LED lighting, and electric doors Wide range of applications in home automation, security systems, and remote control devices
Reference: RBD-2455
2.42" Inch OLED Display SSD1309 12864 SPI Serial Port For Arduino C51 WhiteBrand: No BrandMetal Bracket to protect Display
Reference: RBD-0273
Brand: Waveshare
A1rduino WIFI Shield EMW3162 (module is not included)
Reference: RBD-2461
XL7015 5V-80V DC-DC 0.8A Dc converter Step-down Module Wide Voltage Input LM2596
Reference: RBD-2077
Operating Voltage:2.0v ~ 2.5v Current:10mA Diameter:3mm Wavelength:571nm + 644nm Beam Angle:150
Reference: RBD-0393
Dimensions: 40 x 27 x 15 (LxWxH) mm. RoboticsBD Weight: 10gm (without Hat). 2.54mm pin interface leads. Operating Voltage: 5V. Long service life and stable performance. Standard interface and electronic building blocks. Widely use in Arduino DIY projects. RoboticsBD
Reference: RBD-2554
Type: Operational Amplifier Test Board Material: PCB Size: Approx. 92 x 57 x 17mm / 3.62 x 2.24 x 0.67in Working Voltage: DC 12V Working Current: >100mACompatible Op-Amp Models: Single Op-Amp: LM741, LF356, NE5534, TL071, TL081, OP07, and other standard package single op-amps. Dual Operational: LM358, NE5532, TL072, TL082, MC1458, RC4558, OP275, AD827,...
Reference: RBD-1138
Board Based On AI-Thinker A9 GPRS Module Supports Firmware Upgrade Via Serial Port Operating Voltage: 5v
Reference: RBD-2559
This Rich Shield has various sensors, buttons, LEDs, a potentiometer, segment display and buzzer. Specifications: Suitable for Uno, Mega, Leonardo and other 5V Arduino's that use the Uno R3 pin layout Works on 5V Has various parts to learn the basics with Arduino IR Remote Control is included Handy I2C and UART (RX/TX) pins available
Reference: RBD-0159
Provides a user-friendly interface that allows users to go through the menu, make selections etc. It consists of a 1602 white character blue backlight LCD. The keypad consists of 6 keys select, up, right, down, left and reset. To save the digital IO pins, the keypad interface only uses one ADC channel. The key value is read out through a 5 stage voltage...
Reference: RBD-1331
High-quality BTA16-600B TRIAC AC Voltage: 220V/110V; 50/60Hz Rated current: 5A Logic: 3.3V/5V Peak Operating Current: 8A
Reference: RBD-1417
SMD-MAX7219-MODULE A single module can drive an 8 * 8 common cathode lattice Module Operating voltage: 5V. Module with input and output interfaces Supports multiple modules cascade Led color: Red
Reference: RBD-1336
Onboard Module: ESP8266 wifi module; in AP mode it can connect with 5 Clients at the same time Operating Way: cellphone carried on wifi module; cellphone and wifi module carried on the same router, and use the APP to control relay Transmission Distance : 400m (max) Relay : 5V,10A/250V AC 10A/30V DC Baud Rate: 9600. Diode effusion protection; Short...
Reference: RBD-0576
Chipboard STM32F103C8T6 On board, SWIM interface and reset button Micro USB line or the 2.54 pin to link to the power with the input voltage 4.5V-15V. Power light and the Demo indicator light Leads all the pins and has detailed label for the Pins. Support SWIM debug mode. RoboticsBD
Reference: RBD-1408
Type: CJMCU MINI USB AMS1117 MINI USB interface input 5V MINI USB outputs 5V and 3.3V DC power socket interface input 5V – 12V. DC power outlet output (5V label) 5V and 3.3V Weight: 2 gm.
Reference: RBD-2065
Play standard mono or stereo MP3 files Control with buttons Serial communications protocol (JQ6500 Arduino Library available). Power supply 4.2V Speaker power 4 ohms / 3 watts
Reference: RBD-2327
Brand: DFRobot
In life, remote controllers can be seen everywhere, and most of them are inseparable from the battery. However, we often encounter problems when using the battery, for instance, it is troublesome to replace the battery, batteries are easy to corrode in a humid environment, or the waste batteries may cause serious environmental pollution. Do you know that...
Reference: RBD-2459
Converts 5 – 30V down to a 0.8 – 29V output with adjustable current limit
Reference: RBD-2465
Uses ILI9341 display and XPT2046 touch SPI controllers
Reference: RBD-2415
Dual PS2 Game Joystick Button Module Joystick Compatible With Arduino is a module use to connect and interface PlayStation 2 (PS2) game joysticks with an Arduino microcontroller board. It provides a simple and convenient way to control various projects and applications using PS2-style joysticks. The module consists of two PS2 joysticks, each with two-axis...
Reference: RBD-0345
802.11 b/g/n Standards Wi-Fi Direct (P2P), soft-AP 1MB Flash Memory Integrated low power 32-bit CPU could be used as an application processor A-MPDU & A-MSDU aggregation & 0.4ms guard interval Wake up and transmit packets in < 2ms Standby power consumption of < 1.0mW (DTIM3) RoboticsBD
Reference: RBD-2466
This XL4015-based voltage converter is a 180 KHz fixed frequency PWM buck (step-down) DC/DC module with Constant Voltage and Constant Current control, capable of driving a 5A load with high efficiency, low ripple and excellent line and load regulation.