STMicroelectronics ULN2001D1013TR

Overview

ULN2001D1013TR from STMicroelectronics is a seven-channel high-voltage, high-current Darlington array IC in SO-16 narrow package, rated for 500 mA continuous output per channel (600 mA peak), 50 V output voltage, and integrated clamp diodes for inductive load driving. It interfaces with DTL, TTL, PMOS, and CMOS logic families and is used in relay drivers, solenoid controls, and LED display drivers.

For engineers reviewing the ULN2001D1013TR datasheet, ULN2001D1013TR pinout, ULN2001D1013TR application, or ULN2001D1013TR equivalent, key selection factors include per-channel current capability, input compatibility across logic families, thermal resistance (R_thJA = 64.7 °C/W), clamp diode integration, and SO-16 tape-and-reel packaging for automated assembly.

Technical Context

The ULN2001D1013TR implements seven independent open-collector Darlington pairs with common emitters and on-chip flyback diodes connected from each collector to V_CC. Each Darlington stage provides high DC current gain (h_FE ≥ 1000 at I_C = 350 mA) and low saturation voltage (V_CE(SAT) ≤ 1.6 V at I_C = 350 mA).

Input pins are arranged opposite output pins in the SO-16 package to minimize PCB trace crossovers. The device supports parallel connection of outputs for higher current drive and operates across –40 °C to +85 °C ambient temperature with junction temperature up to +150 °C.

Key Specifications

Pinout & Package

ULN2001D1013TR is housed in a 16-pin SOIC (Small Outline Integrated Circuit) narrow-body package (SO-16), RoHS-compliant, tape-and-reel format (TR), with 1.27 mm pitch and 5.8–6.2 mm body width.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Darlington array applications.

Compared with ULN2003D1013TR, ULN2001D1013TR offers broader logic-family compatibility (including DTL/PMOS) but slightly higher input threshold; versus TD62003FG, it delivers superior system-level reliability through monolithic clamp diode integration and lower thermal resistance.

Availability

ULN2001D1013TR is available at Aetrix Electronics and suitable for industrial automation, embedded display systems, and electromechanical actuation requiring stable component supply, long-term manufacturability, and RoHS-compliant packaging.

Supply support for ULN2001D1013TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, digital, and mixed-signal ICs for automotive, industrial, and consumer markets.

The ULN200x series belongs to ST's high-voltage interface portfolio, engineered specifically for robust, cost-effective replacement of discrete transistor+diode driver stages in industrial control and electro-mechanical systems.

FAQ

Can ULN2001D1013TR drive a 24 V relay coil directly?

Yes. With its 50 V output voltage rating and integrated clamp diodes, ULN2001D1013TR safely switches 24 V DC relays. Connect the relay coil between V_CC (tied to 24 V) and an output pin; the internal diode clamps inductive kickback to 24 V. Ensure total power dissipation stays within 0.78 W (at 85 °C ambient) by limiting simultaneous active channels.

What is the minimum input voltage required to fully saturate an output channel?

For guaranteed saturation at I_C = 500 mA, the input voltage must exceed V_I(ON) = 2.7 V (typical) per the ULN2001 datasheet. At 25 °C, VI ≥ 3.0 V ensures sufficient base drive; at 85 °C, VI ≥ 3.3 V is recommended to maintain h_FE margin and avoid partial turn-on.

Is ULN2001D1013TR pin-compatible with ULN2003D1013TR?

Yes - both use identical SO-16 narrow packages with identical pinout (IN1–IN7, GND, V_CC, OUT1–OUT7). However, ULN2001D1013TR has higher input threshold voltage and wider logic-family support (DTL/PMOS), whereas ULN2003D1013TR is optimized for 5 V TTL/CMOS and turns on at lower input voltage.

Does ULN2001D1013TR require external heat sinking in standard SO-16 layout?

No - with R_thJA = 64.7 °C/W and max power dissipation of ~0.78 W at 85 °C ambient, junction temperature remains below 150 °C using standard 2-layer PCB with 1-in² copper pour under the package. For >3 continuously active channels at full 500 mA, add thermal vias to inner ground plane.