A3950SLP-T Equivalent & Substitute Parts

Part Overview

The A3950SLP-T is a brushed DC motor driver IC manufactured by Allegro MicroSystems, designed for general-purpose motor control applications. This integrated circuit combines control and power stage functionality in a 16-pin TSSOP package with exposed pad, supporting supply voltages from 8V to 36V with 2.8A output current capability. The A3950SLP-T is classified as obsolete, making identification of active equivalent parts essential for new designs and ongoing production support.

Substiute Parts

A3950SLP-T

Allegro MicroSystemsIn Stock: 5538A3950SLP-T Datasheet

Current PartRFQ

A3950SLPTR-T

Allegro MicroSystemsIn Stock: 13550A3950SLPTR-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The A3950SLPTR-T qualifies as a direct substitute for the A3950SLP-T based on the following critical parameters that determine functional and mechanical compatibility:

Motor driver type and control architecture remain identical: both are brushed DC motor drivers with fully integrated control and power stages using DMOS technology.

Electrical specifications are equivalent: output configuration (half bridge with 2 channels), output current (2.8A), supply voltage range (8V ~ 36V), and load voltage range (8V ~ 36V) are identical across both parts.

Package and pinout are identical: both use 16-pin TSSOP with exposed pad (16-eTSSOP-EP), ensuring direct PCB compatibility without layout modifications.

Interface type remains unchanged: parallel interface is maintained in the substitute part.

Operating temperature range is identical: -20°C ~ 150°C (TJ) supports the same thermal operating envelope.

Compliance certifications match: both parts are ROHS3 compliant, REACH unaffected, and carry the same ECCN and HTSUS classifications.

The primary distinction is product status: the A3950SLPTR-T is active and available in higher inventory quantities, whereas the A3950SLP-T is obsolete.

Parameter Comparison

Engineering Selection Recommendations

The A3950SLPTR-T is the appropriate selection for applications currently using or specifying the A3950SLP-T. The substitute part maintains full electrical and mechanical compatibility while offering the advantage of active product status and higher inventory availability. Both parts carry identical RoHS3 compliance and regulatory certifications (REACH unaffected, EAR99 ECCN classification).

The MSL rating difference (MSL 1 versus MSL 2) reflects standard industry variation in moisture sensitivity classification and does not impact functional performance or reliability in typical operating environments. The A3950SLPTR-T is supplied in Cut Tape and Digi-Reel packaging options, providing flexibility for both prototype and production volume requirements.

Frequently Asked Questions (FAQ)

Q: Can the A3950SLPTR-T be used as a direct replacement for the A3950SLP-T?

A: Yes. The A3950SLPTR-T is a direct substitute. Both parts share identical electrical specifications (2.8A output current, 8V-36V supply and load voltage), control architecture (fully integrated DMOS driver with parallel interface), and package configuration (16-pin TSSOP with exposed pad). No circuit modifications or PCB layout changes are required.

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

A: The primary difference is product lifecycle status. The A3950SLP-T is obsolete, while the A3950SLPTR-T is active and maintains higher inventory levels. The MSL rating differs (MSL 1 versus MSL 2), which reflects moisture sensitivity classification but does not affect performance in standard operating conditions.

Q: Are the pinouts identical between A3950SLP-T and A3950SLPTR-T?

A: Yes. Both parts use the 16-eTSSOP-EP package with identical pinout. Direct PCB substitution is possible without layout modifications.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both the A3950SLP-T and A3950SLPTR-T are ROHS3 compliant, REACH unaffected, and carry the same ECCN (EAR99) and HTSUS (8542.39.0001) classifications.

Q: What packaging options are available for the A3950SLPTR-T?

A: The A3950SLPTR-T is available in Cut Tape (CT) and Digi-Reel packaging, supporting both prototype and production volume requirements.

Q: Are there any thermal or operating temperature differences?

A: No. Both parts operate across the identical temperature range of -20°C to 150°C (junction temperature), ensuring equivalent thermal performance in the same applications.