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ULN2803ADWR
- Part Number: ULN2803ADWR
- Categories:
- Manufacturer: Texas Instruments
- MOQ: 1PCS
- In Stock: 3327
- Datasheet:
- Description: TRANS 8NPN DARL 50V 0.5A 18SO
- Payment method: Paypal/Wire transfer/Visa
- Delivery Method: UPS/DHL/FEDEX/EMS
Reference Price (In US Dollars)
- 1 Pcs$1.212
- 10 Pcs$1.162
- 100 Pcs$1.061
- 1000 Pcs$1.01
- 10000 Pcs$1.01
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ULN2803ADWR details
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ULN2803ADWR Specifications
| Manufacturer | Texas Instruments |
| Power - Max | - |
| Mounting Type | Surface Mount |
| Package / Case | 18-SOIC (0.295", 7.50mm Width) |
| Product Status | Active |
| Transistor Type | 8 NPN Darlington |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Frequency - Transition | - |
| Supplier Device Package | 18-SOIC |
| Vce Saturation (Max) @ Ib, Ic | 1.6V @ 500µA, 350mA |
| Current - Collector (Ic) (Max) | 500mA |
| Current - Collector Cutoff (Max) | - |
| DC Current Gain (hFE) (Min) @ Ic, Vce | - |
| Voltage - Collector Emitter Breakdown (Max) | 50V |
ULN2803ADWR Overview
ULN2803ADWR is an 8-channel Darlington transistor array device that is available in a 20-pin SOIC package. This device pinout follows the same pin layout of 18-pin solutions except with the addition of two no connects at the bottom of the package. Below is a pinout comparison between an 18-pin, 8-CH Darlington transistor array and 20-pin, ULN2803CDWR device.
ULN2803ADWR Features
- 500-mA-Rated Collector Current
- High-Voltage Outputs: 50 V
- Output Clamp Diodes
- Relay-Driver Applications
- Compatible with ULN2800A Series
ULN2803ADWR Applications
- Relay Drivers
- Hammer Drivers
- Lamp Drivers
- Display Drivers (LED and Gas Discharge)
- Line Drivers
- Logic Buffers
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ULN2803ADWR Packaging
step1: Inspect Products
step2: Vacuum Packaging
step3: Anti-Static Bag
step4: Individual Packing
step5: Packing Box
step6：Shipping Tag
- Before shipping, we will inspect the parts to ensure it in good condition and check that the parts are brand-new and original with the datasheet. And then, all the products will be packed in an anti-static bag.
- After ensuring that there are no issues with any of the goods after packing, we will wrap them carefully and send them by international express. It demonstrates exceptional seal integrity, outstanding tear and puncture resistance, and both.
Manufacturer Overview
Texas Instruments (TI) establishes itself as a known global semiconductor producer with operations in 35 nations. It has expanded quickly. The first operational integrated circuit was released by TI in 1958. And as of right now, more than 30,000 TI employees globally are dedicated to designing, producing, and marketing chips for embedded and analog processing. They want to use technology to solve problems and transform the world.
Some of TI's notable product lines include the MSP430 and Tiva C Series microcontrollers, which are widely used in embedded systems and Internet of Things (IoT) applications. The company's analog products, such as operational amplifiers and voltage regulators, are highly regarded for their performance and reliability.
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Its sensitive components are not in contact with the measured object, also known as a non-contact temperature measuring instrument. This instrument can be used to measure the surface temperature of moving objects, small targets, and objects with small heat capacity or rapid temperature changes (transient), and can also be used to measure the temperature distribution of the temperature field. The most commonly used non-contact thermometers are based on the fundamental law of black body radiation and are called radiation thermometers. Radiation thermometry methods include the brightness method (see optical pyrometer), radiation method (see radiation pyrometer), and colorimetric method (see colorimetric thermometer). All kinds of radiation temperature measurement methods can only measure the corresponding photometric temperature, radiation temperature, or colorimetric temperature. 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There are two types of changes in resistance positive temperature coefficient Increased temperature = increased resistance A decrease in temperature = a decrease in resistance negative temperature coefficient Increased temperature = decreased resistance Decrease in temperature = increase in resistance Thermocouple Sensing A thermocouple consists of two metal wires of different materials welded together at the ends. Then measure the ambient temperature of the non-heating part, and the temperature of the heating point can be accurately known. Since it must have two conductors of different materials, it is called a thermocouple. Thermocouples made of different materials are used in different temperature ranges, and their sensitivities also vary. The sensitivity of the thermocouple refers to the change in the output potential difference when the temperature of the heating point changes by 1 °C. For most thermocouples supported by metallic materials, this value is between 5 and 40 microvolts/°C. Since the sensitivity of the thermocouple temperature sensor has nothing to do with the thickness of the material, it can also be made into a temperature sensor with very thin materials. Also due to the good ductility of the metal material used to make thermocouples, this tiny temperature-measuring element has a very high response speed and can measure rapidly changing processes. Selection method If you want to make reliable temperature measurements, you first need to choose the correct temperature instrument, that is, the temperature sensor. Among them, thermocouples, thermistors, platinum resistance thermometers (RTDs), and temperature ICs are the most commonly used temperature sensors in testing. The following is an introduction to the characteristics of the thermocouple and thermistor temperature instruments. thermocouple Thermocouples are the most commonly used temperature sensors in temperature measurement. Its main advantages are a wide temperature range and adaptability to various atmospheric environments, and it is strong, low in price, does not require a power supply, and is the cheapest. A thermocouple consists of two wires of dissimilar metals (metal A and metal B) connected at one end. When one end of the thermocouple is heated, there is a potential difference in the thermocouple circuit. The temperature can be calculated from the measured potential difference. However, there is a nonlinear relationship between voltage and temperature. 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