A3982SLB-T Equivalent & Substitute Parts

Part Overview

The A3982SLB-T is a bipolar motor driver IC manufactured by Allegro MicroSystems, designed for stepper motor control applications. It integrates a fully functional driver with control and power stages in a 24-SOIC surface mount package. The device operates across a supply voltage range of 3V to 5.5V with load voltage capability from 8V to 35V, delivering 2A output current per channel.

The A3982SLB-T is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production or maintenance requirements for systems utilizing this motor driver architecture.

Substiute Parts

A3982SLB-T

Allegro MicroSystemsIn Stock: 1058A3982SLB-T Datasheet

Current PartRFQ

A3982SLBTR-T

Allegro MicroSystemsIn Stock: 22771A3982SLBTR-T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the A3982SLB-T is determined by strict equivalence across the following critical parameters:

• Motor driver function and architecture (fully integrated control and power stage)
• Motor type classification (bipolar stepper motor)
• Output configuration (half bridge with 4 channels)
• Electrical specifications (2A output current, 3V–5.5V supply, 8V–35V load voltage)
• Package form factor (24-SOIC with identical 0.295" width)
• Operating temperature range (-20°C to 150°C junction temperature)
• Compliance certifications (ROHS3, MSL 3)

The A3982SLBTR-T qualifies as a direct substitute based on identical electrical performance, package specifications, and compliance requirements. The primary distinction is product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

The A3982SLBTR-T is the direct functional equivalent of the A3982SLB-T. Both devices share identical electrical specifications, package geometry, and compliance certifications. The A3982SLBTR-T maintains active product status with Allegro MicroSystems, ensuring ongoing availability and support.

Selection of the A3982SLBTR-T is appropriate for new designs, production continuity, and replacement applications. The substitute part is supplied in Cut Tape and Digi-Reel packaging formats, supporting both automated assembly and manual component handling workflows. ROHS3 compliance and MSL 3 rating are maintained across both variants, ensuring compatibility with standard manufacturing and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can the A3982SLBTR-T be used as a direct replacement for the A3982SLB-T?

A: Yes. The A3982SLBTR-T is electrically and mechanically identical to the A3982SLB-T. Both devices feature the same 24-SOIC package, identical pin configuration, and equivalent electrical performance across all specified parameters.

Q: What is the primary difference between these two part numbers?

A: The A3982SLB-T is classified as obsolete, while the A3982SLBTR-T maintains active product status. The A3982SLBTR-T is supplied in Cut Tape and Digi-Reel packaging, whereas the A3982SLB-T uses standard packaging. Electrical and functional specifications are identical.

Q: Are there any compliance or certification differences?

A: No. Both parts are ROHS3 compliant and carry MSL 3 (168 Hours) moisture sensitivity ratings. Compliance certifications are equivalent across both variants.

Q: What packaging options are available for the substitute part?

A: The A3982SLBTR-T is available in Cut Tape (CT) and Digi-Reel® formats, supporting both automated pick-and-place assembly and manual component distribution.

Q: Is the 24-SOIC package footprint identical between both parts?

A: Yes. Both the A3982SLB-T and A3982SLBTR-T use the 24-SOIC package with 0.295" width (7.50mm). PCB footprints and land patterns are identical.

Q: What is the inventory status of each part?

A: The A3982SLB-T has 955 pieces in stock as new original inventory. The A3982SLBTR-T has 22,717 pieces in stock as new original inventory, reflecting its active product status.