A3906SES-T Equivalent & Substitute Parts

Part Overview

The A3906SES-T is a bipolar motor driver IC manufactured by Allegro MicroSystems, designed for fully integrated control and power stage applications in battery-powered systems. This device operates across a 2.5V to 9V supply range and delivers 1A output current through four half-bridge configurations, supporting both stepper and brushed DC motor control with parallel interface architecture.

The A3906SES-T is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications currently utilizing this component.

Substiute Parts

A3906SES-T

Allegro MicroSystemsIn Stock: 1193A3906SES-T Datasheet

Current PartRFQ

A3906SESTR-T

Allegro MicroSystemsIn Stock: 19081A3906SESTR-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the A3906SES-T is determined by strict equivalence across the following critical parameters:

Motor control architecture (bipolar stepper and brushed DC support), fully integrated driver function with control and power stage integration, four half-bridge output configuration, parallel interface protocol, DMOS technology platform, 1A output current rating, 2.5V to 9V supply and load voltage range, -20°C to 150°C operating temperature specification, 20-QFN-EP (4x4) package geometry, and regulatory compliance status (ROHS3, REACH Unaffected).

The A3906SESTR-T qualifies as a direct substitute based on identical electrical specifications, mechanical packaging, and functional architecture. The primary distinction is product status: A3906SESTR-T is active production, whereas A3906SES-T is obsolete.

Parameter Comparison

Engineering Selection Recommendations

The A3906SESTR-T is the direct substitute for the obsolete A3906SES-T. Both components maintain identical electrical performance, mechanical compatibility, and regulatory compliance profiles. The A3906SESTR-T carries active product status with significantly higher inventory availability (19,020 units versus 1,182 units), supporting sustained production and supply chain continuity.

Selection of A3906SESTR-T eliminates obsolescence risk while preserving full functional and physical compatibility with existing designs. Both components satisfy ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment across manufacturing and distribution channels.

Frequently Asked Questions (FAQ)

Q: Can A3906SESTR-T directly replace A3906SES-T in existing designs?

A: Yes. Both components are electrically and mechanically identical across all specified parameters: motor control function, output configuration, interface protocol, voltage and current ratings, operating temperature range, package geometry, and regulatory compliance. No design modifications are required.

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

A: Product status and supply availability. A3906SES-T is obsolete with limited inventory. A3906SESTR-T is active production with substantially higher stock levels, ensuring long-term supply chain reliability.

Q: Are the packaging specifications identical?

A: Yes. Both components use 20-WFQFN Exposed Pad (20-QFN-EP 4x4) surface mount packaging with identical mechanical and thermal characteristics. PCB layout and assembly processes require no modification.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both A3906SES-T and A3906SESTR-T are ROHS3 compliant and REACH unaffected, satisfying equivalent regulatory and environmental standards.

Q: What motor types are supported by these components?

A: Both components support bipolar stepper motors and brushed DC motors through fully integrated control and power stage architecture with four half-bridge output configuration and parallel interface.