Part A
A3967SLBTR-T
Allegro MicroSystems
- Lifecycle
- Active
- Stock
- 2159 PCS
- Package
- SOIC-24
- Series
- PMIC - Motor Drivers, Controllers
Replacement verdict
Compatible functional replacement candidate
The A3967SLBTR-T is a tape-and-reel packaged variant of the A3967SLB, sharing the same die, electrical characteristics, and functional behavior. Both devices are drop-in compatible when the reel packaging format is acceptable for the assembly process, making the A3967SLBTR-T a valid functional replacement candidate for the A3967SLB.
Function and Topology
High match
Electrical Ratings
High match
Package and Pinout
High match
Packaging Format
Validation required
Parts at a glance
Part B
A3967SLB
Allegro MicroSystems
- Lifecycle
- Active
- Stock
- 9415 PCS
- Package
- SOIC-24
- Series
- PMIC - Motor Drivers, Controllers
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | A3967SLBTR-T | A3967SLB | Why it matters |
|---|---|---|---|
| Manufacturer | Allegro MicroSystems | Allegro MicroSystems | Identical manufacturer ensures the same design, process, and quality standards. |
| Product Category | Motor / Motion / Ignition Controllers & Drivers | Motor / Motion / Ignition Controllers & Drivers | Same functional category confirms both are stepper motor driver ICs. |
| Motor Type | Bipolar Stepper | Bipolar Stepper | Both drive the same motor type, so they are functionally interchangeable in the target application. |
| Output Current per Channel | 750 mA | 750 mA | Matching current rating ensures equivalent torque capability and thermal behavior. |
| Supply Voltage Range | 4.75 V to 5.25 V (logic), 4.75 V to 30 V (motor) | 4.75 V to 5.25 V (logic), 4.75 V to 30 V (motor) | Identical voltage ranges mean the same power supply design can be reused. |
| Mounting Type | Surface Mount | Surface Mount | Same mounting style allows use on the same PCB footprint. |
| Package / Case | 24-SOIC (0.295", 7.50mm Width) | 24-SOIC (0.295", 7.50mm Width) | Package determines PCB footprint and thermal performance; identical packages support drop-in replacement. |
| Packaging | Tape & Reel (TR) | Tube | Packaging differs for automated assembly versus manual handling, but the die and performance are the same. |
| Operating Temperature Range | -20°C to +85°C | -20°C to +85°C | Same temperature range ensures equivalent reliability across environmental conditions. |
| RoHS Status | RoHS Compliant | RoHS Compliant | Both meet the same environmental compliance requirements for global markets. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | A3967SLBTR-T | A3967SLB |
|---|---|---|
| Part Status | Active | Obsolete |
| Motor Type - Stepper | Bipolar | Bipolar |
| Function | Driver - Fully Integrated, Control and Power Stage | Driver - Fully Integrated, Control and Power Stage |
| Output Configuration | Half Bridge (4) | Half Bridge (4) |
| Interface | Logic | Logic |
| Technology | Bipolar | Bipolar |
| Step Resolution | 1, 1/2, 1/4, 1/8 | 1, 1/2, 1/4, 1/8 |
| Applications | General Purpose | General Purpose |
| Current - Output | 750mA | 750mA |
| Voltage - Supply | 3V ~ 5.5V | 3V ~ 5.5V |
| Voltage - Load | 4.75V ~ 30V | 4.75V ~ 30V |
| Operating Temperature | -20°C ~ 150°C (TJ) | -20°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What is the difference between the A3967SLBTR-T and the A3967SLB?
The A3967SLBTR-T is the tape and reel packaged version of the A3967SLB. Both devices are functionally identical microstepping motor driver ICs; the suffix "TR" indicates tape and reel packaging for automated assembly, while the base part number A3967SLB is typically supplied in tubes or trays.
Are the A3967SLBTR-T and A3967SLB electrically and functionally interchangeable?
Yes. Both devices share the same die, electrical specifications, pinout, and functional characteristics. The only difference is the packaging format, so they are interchangeable in circuit design provided the physical package and PCB land pattern are compatible.
What package type do the A3967SLBTR-T and A3967SLB use?
Both devices are offered in a 24-pin SOIC (DIP-24 narrow body) package with a 0.300-inch (7.62 mm) body width. The A3967SLBTR-T is supplied in tape and reel, while the A3967SLB is supplied in tubes.
What are the key operating parameters of the A3967SLB and A3967SLBTR-T?
Both devices operate with a motor supply voltage (VM) from 4.75 V to 30 V and a logic supply voltage (VDD) from 3.0 V to 5.5 V. They provide up to 750 mA continuous output current per phase (1.5 A peak) and feature built-in translator, PWM current control, and microstepping up to 1/8 step.
Can the A3967SLBTR-T be used as a drop-in replacement for the A3967SLB in an existing design?
Yes, provided the PCB footprint matches the 24-pin SOIC package and the assembly process supports tape and reel components. The electrical performance and pin functions are identical, so no circuit redesign is required.
Do the A3967SLBTR-T and A3967SLB have the same thermal characteristics?
Yes. Both devices share the same package and die, so the thermal resistance (RθJA) and power dissipation ratings are identical. The tape and reel packaging does not alter the thermal performance of the device itself.
Which applications are suitable for the A3967SLBTR-T and A3967SLB?
Both devices are designed for bipolar stepper motor control in applications such as printers, scanners, copiers, and industrial automation equipment. They are suitable for any design requiring microstepping up to 1/8 step with supply voltages up to 30 V and phase currents up to 750 mA.
Are the A3967SLBTR-T and A3967SLB RoHS compliant?
Yes. Both the A3967SLBTR-T and A3967SLB are RoHS compliant and lead (Pb) free, as confirmed by Allegro MicroSystems datasheets and distributor product pages. The "-T" suffix in the tape and reel version also indicates lead-free construction.