ULQ2004A STMicroelectronics Integrated Circuit (Dual-In-Line Packages) In Stock
STMicroelectronics ULQ2004A is a 7-channel NPN Darlington transistor array rated at 50V and 500mA per channel with open-collector outputs and built-in transient protection in a PDIP-16 package. Available from stock with worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- ULQ2004A Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2390(MOQ 10)
- Temp Range
- -40.0°C to 105.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of ULQ2004A?
- 7-channel NPN Darlington array with 500mA per channel current sink capability for driving relays, motors, and solenoids
- 50V open-collector outputs with integrated suppression diodes protecting against inductive load transients
- Standard logic-compatible inputs interfacing directly with CMOS and TTL outputs without external base resistors
What is ULQ2004A used for?
The ULQ2004A is used in relay driver boards, stepper motor control, and industrial output modules where logic signals must switch loads up to 50V at 500mA per channel. Seven independent Darlington pairs allow a single 16-pin package to drive entire relay banks or LED arrays in PLC output stages and industrial automation panels. Built-in transient suppression diodes eliminate the need for external flyback diodes on inductive loads.
What are the specifications of ULQ2004A?
| Factory Lead Time | 10Weeks |
| YTEOL | 5.62 |
| Built-in Protections | TRANSIENT |
| Driver Number of Bits | 7 |
| Input Characteristics | STANDARD |
| Interface IC Type | BUFFER OR INVERTER BASED PERIPHERAL DRIVER |
| JESD-30 Code | R-PDIP-T16 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Characteristics | OPEN-COLLECTOR |
| Output Current Flow Direction | SINK |
| Output Peak Current Limit-Nom | 0.5A |
| Output Polarity | INVERTED |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Supply Voltage-Max | 8V |
| Surface Mount | YES |
| Technology | BIPOLAR |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Turn-off Time | 1 µs |
| Turn-on Time | 1 µs |
| 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 | Mainland China |
Where can I find the ULQ2004A datasheet?
ULQ2004A Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for ULQ2004A?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many output channels does the ULQ2004A provide, and what is the maximum load current per channel?
The ULQ2004A contains 7 independent NPN Darlington output channels, each capable of sinking up to 500mA at up to 50V. This allows a single 16-pin PDIP package to drive 7 relay coils or solenoids simultaneously from a 5V logic signal, with built-in transient protection diodes on every channel.
In a PLC digital output module, how do the integrated suppression diodes of ULQ2004A prevent damage from relay coil switching?
Each of the 7 Darlington output stages in the ULQ2004A includes an internal clamp diode connected from collector to a common suppression bus. When a relay coil is de-energized, the back-EMF spike up to 50V is clamped immediately without requiring external flyback diodes, simplifying PCB layout and reducing component count in 24V relay driver circuits.
When is ULQ2004A preferred over a discrete transistor stage for driving 7 stepper motor phases from a microcontroller?
The ULQ2004A integrates 7 Darlington pairs with standard CMOS-compatible input thresholds in a single 16-pin PDIP, eliminating 7 separate transistors, 7 base resistors, and 7 flyback diodes. This reduces assembly time and board area in stepper motor unipolar driver circuits while delivering 500mA per channel at 50V with factory-specified matched input characteristics across all 7 channels.
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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 |
|---|---|---|
| 10+ | $0.5400 | $5.40 |
| 18+ | $0.3235 | $5.82 |
| 1000+ | $0.2837 | $283.70 |
| 2500+ | $0.2620 | $655.00 |
| 10000+ | $0.2390 | $2390.00 |
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