ULN2069B STMicroelectronics Integrated Circuit (Dual-In-Line Packages) In Stock
STMicroelectronics ULN2069B is a 4-channel high-current NPN Darlington transistor array sinking up to 1.5 A per channel at 50 V, logic-level compatible, housed in a 16-pin DIP package with integrated transient suppression. Available from authorized distributors with worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- ULN2069B Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $2.6900(MOQ 5)
- Temp Range
- -20.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of ULN2069B?
- 4-channel NPN Darlington array with 1.5 A per-channel sink current at up to 50 V, three times the drive capacity of standard 500 mA arrays for high-power relay and solenoid control
- Logic-level compatible inputs allow direct drive from 3.3 V or 5 V microcontroller GPIO without additional buffer stages
- Integrated transient suppression clamp diodes on all 4 output channels protect against inductive back-EMF spikes exceeding 50 V
- 16-pin DIP package enables tool-free prototype assembly on breadboards and low-cost PCBs for industrial and automation designs
What is ULN2069B used for?
The ULN2069B is suited for industrial relay driver boards and PLC output modules that require 4 independent high-current channels each capable of sinking 1.5 A from 24 V or 48 V solenoid and contactor coils driven directly by microcontroller logic. Its logic-level compatible inputs and integrated flyback diodes simplify PCB design for stepper motor winding drivers, lamp and heater control circuits, and high-side load switching via external P-channel MOSFETs. The DIP-16 package also makes it a popular choice for educational robotics and benchtop prototyping where breadboard compatibility is required.
What are the specifications of ULN2069B?
| YTEOL | 0 |
| Additional Feature | LOGIC LEVEL COMPATIBLE |
| Built-in Protections | TRANSIENT |
| Driver Number of Bits | 4 |
| Interface IC Type | BUFFER OR INVERTER BASED PERIPHERAL DRIVER |
| JESD-30 Code | R-PDIP-T16 |
| JESD-609 Code | e3 |
| Number of Functions | 4 |
| Output Current Flow Direction | SINK |
| Output Current-Max | 1.5A |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Qualification Status | Not Qualified |
| Supply Voltage-Nom | 5V |
| Surface Mount | NO |
| Technology | BIPOLAR |
| Temperature Grade | OTHER |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Turn-off Time | 1.5 µs |
| Turn-on Time | 1 µs |
| ## ULN2069B Alternates Showing results | Image |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Malaysia |
Where can I find the ULN2069B datasheet?
ULN2069B Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for ULN2069B?
Compatible alternatives and drop-in replacements for ULN2069B:
suggested
suggested
Frequently Asked Questions
What output current can each channel of the ULN2069B sink, and how does this compare to the ULN2003A?
Each of the ULN2069B's 4 channels sinks up to 1.5 A continuous collector current at up to 50 V, which is three times the 500 mA per-channel rating of the 7-channel ULN2003A. The ULN2069B trades two fewer channels for significantly higher per-channel drive, making it the preferred choice when fewer but heavier inductive loads such as 1 A relay coils or stepper motor half-windings must be controlled.
Which input voltage levels are compatible with the ULN2069B, and can 3.3 V microcontrollers drive it reliably?
The ULN2069B is characterized as logic-level compatible with an input high threshold of approximately 1.5 V to 2.0 V, so both 3.3 V and 5 V CMOS or TTL outputs reliably turn on the Darlington pairs. Input current at 3.3 V is typically under 1 mA per channel, which stays within the GPIO sourcing limits of most ARM Cortex-M and AVR microcontrollers without additional buffering.
For a 24 V pneumatic valve bank requiring 4 solenoids at 1 A each, is the ULN2069B a suitable single-package solution?
Yes. The ULN2069B provides exactly 4 open-collector output channels each rated for 1.5 A sink and 50 V, comfortably covering 4 × 1 A at 24 V solenoid loads in a single DIP-16 package. The integrated 50 V clamp diodes handle the inductive kick from each valve coil at turn-off, eliminating 4 external freewheeling diodes and saving both cost and PCB area.
Does the ULN2069B support paralleling of channels to drive a single load above 1.5 A?
Yes, two channels of the ULN2069B can be connected in parallel — inputs tied together and outputs tied together — to share current and increase the effective sink capability to approximately 3 A at 50 V for a single load. This technique is common for driving 24 V DC motor windings or large solenoids that exceed the single-channel 1.5 A rating, using the remaining 2 channels for independent loads.
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Why Buy from FindMyChip
About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 5+ | $6.0200 | $30.10 |
| 25+ | $5.0900 | $127.25 |
| 100+ | $4.3800 | $438.00 |
| 261+ | $3.0030 | $783.78 |
| 1000+ | $2.8600 | $2860.00 |
| 10000+ | $2.6900 | $26900.00 |
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