April 19,2022

ULN2003A Transistor: Datasheet, Pinout, Equivalent

ULN2003A Transistor Introduction

ULN2003A is a high-voltage, high-current Darlington transistor array. It has the characteristics of high current gain, high working voltage, wide temperature range, and strong load capacity. It is suitable for all kinds of systems requiring high-speed and high-power driving. Therefore, it is used as a high-current driver. Load chip use. Each one is composed of seven independent Darlington pairs, with high voltage output and shared cathode clamping diodes, used to switch inductive loads. The collector current rating of a single Darlington pair is 500 mA, and the Darlington pair can be connected in parallel to obtain a higher current capacity.

ULN2003A Transistor

Today, easybom will introduce the details about it. This article will be divided into below parts: ULN2003A Datasheet, ULN2003A Pinout, ULN2003A Equivalent, and so on.

ULN2003A Features

There is a freewheeling diode inside the circuit, which can be used to drive inductive loads such as relays and stepping motors

Each Darlington tube is connected in series with a 2.7K base resistor, which can be directly connected to a TTL/CMOS circuit at a working voltage of 5V, and the input is compatible with TTL/CMOS logic signals

They are resistant to high voltage

ULN2003A Pinout

Below is the ULN2003A Pinout:

ULN2003A Pinout

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Technical
- Collector-Emitter Breakdown Voltage50V
- Number of Elements7
- PackagingPackaging refers to the bulk specification of products when they are distributed, stored, or used.Tube
- SeriesThe complete series of electronic components generally consist of the main body model, prefix, suffix, etc.Automotive, AEC-Q100
- Operating TemperatureAn operating temperature is a specified temperature range which ensures the efficient operation of an electric or mechanical device. It varies according to different devices.-20°C~70°C TA
- JESD-609 CodeJESD-609 requires that the surface or terminal finish or material must be marked under space permission, otherwise, alternating marking should be provided. The marking way can be the forma of barcode or 2D.e3
- Part StatusPart status indicates the different status of different products for use. Active
- Moisture Sensitivity Level (MSL)Moisture sensitivity level (MSL) was proposed to provide a classification standard for the packaging of human-sensitive SMD component.1 (Unlimited)
- Number of TerminationsIn electronics, termination refers to the action to end a transmission line, thus preventing the signals from being reflected from the end of the line.16
- ECCN CodeECCN code is used to show the level of export control based on the type and performance of high-tech products and technologies (especially integrated circuits).EAR99
- Terminal FinishWhen selecting component terminal finishes, avoid choosing lead-containing finishes to ensure that the component molding plastic can withstand the higher temperatures associated with lead-free soldering.Matte Tin (Sn)
- Additional FeatureFeature refers to the distinctive attributes and aspects of electronic components. Additional feature means other features belonging to them.LOGIC LEVEL COMPATIBLE
- HTS CodeCustoms requires all products to be classified to determine the tariffs applicable to the products. Each export product has a corresponding verifiable classification number, which is the so-called HTS code. 8541.29.00.95
- Terminal PositionA terminal is the point where a conductor of an electronic component comes to an end. It can also be connected to the external circuits.DUAL
- Current RatingCurrent rating is the maximum current that a fuse will carry for an indefinite period without too much deterioration of the fuse element.500mA
- Base Part NumberBase part number is an identifier of a particular part design or material used in a particular applications.ULN2003
- Output VoltageOutput voltage is the maximum voltage output by the electronic component. In other words, the so-called output voltage refers to the voltage value in the direction of the output current of the electronic device.50V
- PolarityPolarity in electrical terms refers to the positive or negative conductors in a DC circuit or the line and neutral conductor in an AC circuit. NPN
- ConfigurationConfiguration of electronic components refers to the composition or arrangement of them.COMPLEX
- Transistor ApplicationThe term transistor refers to a semiconductor device. It can refer specifically to devices that are bipolar. It includes the ability to detect, rectify, amplify, and changing, voltage regulator signal modulation, and many other functions. As an adjustable current switch, it can regulate the output current in accordance with what voltage is input.SWITCHING
- Forward VoltagePositive voltage refers to the voltage that is applied between the cathode and anode connections of the valve, or bridge arm when the anode is positive in relation to the cathode. Positive poles on the supply are linked to positive poles in the diode. Its negative side is linked with the diode's negative pole. 1.7V
- Transistor TypeTransistor Type refers to the types of Transistor.7 NPN Darlington
- Collector Emitter Voltage (VCEO)Vceo refers to the reverse breakdown voltage formed between the collector and the reflector under the action of the collector power supply Vcc when the base is open. It is also called the safety voltage between the collector and the emitter.50V
- Max Collector CurrentTransistor Maximum Current Collector Maximum Current (ICM) refers to the maximum current allowed by the collector of the transistor.500mA
- Current - Collector Cutoff (Max)The maximum collector current is normally rated to be the current at which the DC current gain (hFE) falls to 50% of its maximum value.50μA
- JEDEC-95 CodeThe JEDEC memory standards are the specifications for semiconductor memory circuits and similar storage devices promulgated by the Joint Electron Device Engineering Council (JEDEC) Solid State Technology Association, a semiconductor trade and engineering standardization organization.MS-001BB
- Vce Saturation (Max) @ Ib, IcVce saturation means Ic is at its maximum value(saturated). Ideally we consider Vce to be zero but in actual it is 0.2 to 0.3 volts for upto 50 mA Ic. Note that saturation of Ic is determined by Rc.1.6V @ 500μA, 350mA
- Input Capacitancewith either input grounded, the capacitance between the input terminals of an op amp15pF
- Emitter Base Voltage (VEBO)While the base-emitter diode is in reverse and not conducting, the highest voltage that may be supplied50V
- Input CurrentWhen the rated voltage is applied, the current flows.930μA
- Collector-Emitter Saturation Voltage1.1V
- Voltage Rated (DC)50V
- VCEsat(Max)1.6 V

Physical
- MountMount explains the different ways that different electronic components are mounted, including surface mount, through-hole mount, panel mount, and more.Through Hole
- Mounting TypeMounting types explain the different ways that different electronic components are mounted, including surface mount, through-hole mount, panel mount, and more.Through Hole
- Package / CasePackage/Case refers to the bulk specification of products when they are distributed, stored, or used.16-DIP (0.300, 7.62mm)
- Contact PlatingContact plating is a process conducted to reduce electrical resistance of the contact itself, which allows the current to floe through the contact more easily.Gold
- Number of PinsPins are the connections between the internal circuits of the integrated circuit (chip) and the peripheral circuits, and all the pins constitute the interface of this chip.16
- WeightWeight is a measure of the size of an object under gravity. Weight and mass are different, and the unit is Newton. It is a basic attribute of an object.951.693491mg
- Transistor Element MaterialThe term transistor refers to a semiconductor device. It can refer specifically to devices that are bipolar. It includes the ability to detect, rectify, amplify, and changing, voltage regulator signal modulation, and many other functions. As an adjustable current switch, it can regulate the output current in accordance with what voltage is input.SILICON

Dimensions
- LengthLength refers to the extent of the electronic components from end to end.19.3mm
- HeightHeight refers to the extent of the electronic components from base to top.5.08mm
- WidthWidth refers to the extent of the electronic components from side to side.6.35mm
- ThicknessThickness is defined as the distance between the opposite sides of electronic components.3.9mm

Supply Chain
- Lifecycle StatusLifecycle status indicates the different status of different products for use, including obsolete, next generation, and more.ACTIVE (Last Updated: 6 days ago)
- Factory Lead TimeFactory lead time is a period needed by the factory to process a product from the moment when customer places the order till the delivery time.6 Weeks

Compliance
- Radiation HardeningRadiation hardening is a kind of capability of electronic components to avoid damage or malfunction which is the result of a high degree of ionizing radiation.No
- REACH SVHCSubstances that meet the requirements of Article 57 of REACH are generally considered to be a substance of very high concern (SVHC).No SVHC
- RoHS StatusRoHS is a mandatory standards used to limit the use of harmful components in electrical and electronic equipment, making them conducive to human health and environmental protection.ROHS3 Compliant
- Lead FreeLead-free is a standard that the lead content must be reduced to a level below 1000ppm (<0.1%), which environment-friendly electronic manufacturing complies with.Lead Free

Where to Use ULN2003A?

ULN2003A transistor is widely used for relay drivers, hammer drivers, lamp drivers, display drivers (LED and gas discharge), line drivers, as well as logic buffers.

ULN2003A Equivalent

You could use TPIC2701, ULN2001, ULN2002, ULN2004, and L293D as ULN2003A equivalents. You could find them on easybom.

Everything You Need to Know About ULN2003A in Electronics

What is ULN2003A used for?

The ULN2003A is generally used in the driver circuit for relays, lamps, and LED displays as well as stepper motors, logic buffers, and line drivers.

What is ULN2004A?

These three arrays, ULN2002A, ULN2003A, and ULN2004A are high-voltage, high-current Darlington arrays, each with seven common emitters that are open collectors pairs. Each pair is with a rating of 500mA. The suppression diodes are also included for the inductive load drive. The outputs and inputs are connected opposite to facilitate the design of the board.

What is the difference between ULN2003 and ULN2004?

The primary difference between ULN2003 in comparison to the ULN2004 is the size of the resistor that is placed between the input and base of the Darlington transistor.

ULN2003A Applications

Used to drive high current loads using Digital Circuits

Can be used to drive Stepper motors

High current LED’s can be driven

Relay Driver module

Logic Buffers in digital electronics

Used as a Touch sensor for Arduino

Package Dimensions

Below is the picture of the 2D Model and Dimensions from the ULN2003A Datasheet will be useful to know the package type and dimensions.

Package Dimensions

ULN2003A Datasheet

Download the ULN2003A datasheet below:

https://components101.com/sites/default/files/component_datasheet/IC%20ULN2003%20Datasheet_0.pdf

Manufacturer

Texas Instruments

Texas Instruments (TI) emerges as a globally recognized semiconductor manufacturer expanded into 35 countries. It has seen rapid growth. In 1958, they first introduced the working integrated circuit. And today more than 30,000 countries worldwide are committed to designing, manufacturing, and selling analog and embedded processing chips. They aspire to solve challenges as well as change the world through their technologies.

Conclusion

ULN2003A is a high-voltage, high-current Darlington transistor array. It has the characteristics of high current gain, high working voltage, wide temperature range, and strong load capacity. It is suitable for all kinds of systems requiring high-speed and high-power driving. It is widely used for relay drivers, hammer drivers, lamp drivers, display drivers (LED and gas discharge), line drivers, as well as logic buffers. Hope the above information could help you!

labelsULN2003ATexas Instruments

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Anita

Anita is a skilled electronics engineer with expertise in analog and digital circuit design. She is constantly seeking new challenges and opportunities to learn and grow in her career and is committed to delivering high-quality and reliable solutions to her clients.

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