A3967SLBTR Equivalent & Substitute Parts

Part Overview

The A3967SLBTR is a bipolar stepper motor driver IC manufactured by Allegro MicroSystems, designed for fully integrated motor control and power stage applications. This device operates across a supply voltage range of 3V to 5.5V and supports multiple step resolutions (1, 1/2, 1/4, 1/8), making it suitable for general-purpose stepper motor applications requiring precise control logic.

The A3967SLBTR is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support long-term product availability for applications currently utilizing this component.

Substiute Parts

A3967SLBTR

Allegro MicroSystemsIn Stock: 6505A3967SLBTR Datasheet

Current PartRFQ

A3967SLBTR-T

Allegro MicroSystemsIn Stock: 42849A3967SLBTR-T Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the A3967SLBTR is determined by strict equivalence across the following critical parameters:

• Motor Type - Stepper: Bipolar
• Output Configuration: Half Bridge (4)
• Step Resolution: 1, 1/2, 1/4, 1/8
• Current - Output: 750mA
• Voltage - Supply: 3V ~ 5.5V
• Voltage - Load: 4.75V ~ 30V
• Operating Temperature: -20°C ~ 150°C (TJ)
• Package / Case: 24-SOIC (0.295", 7.50mm Width)
• Mounting Type: Surface Mount

The A3967SLBTR-T meets all these criteria and is therefore classified as a parametric equivalent. Both parts share identical electrical specifications, mechanical packaging, and functional capabilities. The primary distinction lies in product status and packaging format.

Parameter Comparison

Engineering Selection Recommendations

The A3967SLBTR-T is the direct substitute for the obsolete A3967SLBTR. Both parts are electrically and mechanically identical across all functional parameters. Selection between these parts should be based on the following considerations:

The A3967SLBTR-T is recommended for new designs and ongoing production due to its active product status and ROHS3 compliance. This part ensures regulatory alignment with current environmental standards and guarantees long-term supply chain availability.

The A3967SLBTR remains suitable for legacy applications where existing inventory is available and RoHS compliance is not a requirement. However, transition to the A3967SLBTR-T is advised for applications requiring regulatory compliance or extended product lifecycle support.

Packaging format differs between the two parts: the A3967SLBTR is supplied in standard packaging, while the A3967SLBTR-T is available in Cut Tape (CT) and Digi-Reel® formats. This distinction affects handling, storage, and integration into automated assembly processes but does not impact electrical or mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Are the A3967SLBTR and A3967SLBTR-T electrically interchangeable?

A: Yes. Both parts share identical electrical specifications, including supply voltage range (3V ~ 5.5V), output current (750mA), load voltage range (4.75V ~ 30V), and operating temperature range (-20°C ~ 150°C). They support the same step resolutions and output configurations.

Q: What is the difference between these two parts?

A: The primary differences are product status, RoHS compliance, and packaging format. The A3967SLBTR is obsolete and RoHS non-compliant, while the A3967SLBTR-T is active and ROHS3 compliant. The A3967SLBTR-T is supplied in Cut Tape and Digi-Reel formats, whereas the A3967SLBTR uses standard packaging.

Q: Can I use the A3967SLBTR-T as a direct replacement in existing designs?

A: Yes. The A3967SLBTR-T is a direct substitute with no design modifications required. Pin configuration, package dimensions (24-SOIC, 0.295" width), and all electrical parameters are identical.

Q: Does the moisture sensitivity level difference affect compatibility?

A: No. The difference in MSL (1 versus 3) reflects storage and handling requirements but does not affect electrical performance or functional compatibility. The A3967SLBTR-T requires storage conditions consistent with MSL 3 (168 hours at 60% relative humidity maximum).

Q: Which part should I specify for new production?

A: Specify the A3967SLBTR-T for new designs and ongoing production. This part is active, ROHS3 compliant, and ensures regulatory alignment and supply chain continuity.