A4955KLPTR-T Equivalent & Substitute Parts

Part Overview

The A4955KLPTR-T is a brushed DC motor driver IC manufactured by Allegro MicroSystems, designed for general-purpose motor control applications. This device operates across a wide supply voltage range of 5.5V to 50V and features NMOS parallel pre-driver architecture with half-bridge output configuration. The part carries automotive-grade qualification (AEC-Q100) and is RoHS3 compliant. However, the A4955KLPTR-T is classified as "Not For New Designs," making identification of equivalent alternatives essential for ongoing production and new project planning.

Substiute Parts

A4955KLPTR-T

Allegro MicroSystemsIn Stock: 17762A4955KLPTR-T Datasheet

Current PartRFQ

A4956KLPTR-T

Allegro MicroSystemsIn Stock: 9057A4956KLPTR-T Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The A4956KLPTR-T qualifies as a parametric equivalent to the A4955KLPTR-T based on the following critical parameters:

• Identical motor driver function (brushed DC commutation and direction management)
• Matching output configuration (pre-driver half-bridge topology with 2 channels)
• Identical interface type (parallel control)
• Identical technology platform (NMOS)
• Matching supply voltage range (5.5V ~ 50V)
• Identical operating temperature range (-40°C ~ 125°C)
• Identical package and pinout (20-TSSOP with exposed pad)
• Matching automotive grade and AEC-Q100 qualification
• Identical RoHS3 compliance and MSL rating

The primary difference between these parts is packaging format: the A4955KLPTR-T is supplied in Cut Tape (CT) & Digi-Reel® format, while the A4956KLPTR-T is supplied in Tape & Reel (TR) format. Both parts share the same base product number series (A495x) and are functionally interchangeable at the circuit level.

Parameter Comparison

Engineering Selection Recommendations

Both the A4955KLPTR-T and A4956KLPTR-T are classified as "Not For New Designs" by Allegro MicroSystems. For new design initiatives, evaluation of current-generation motor driver alternatives from Allegro MicroSystems or other qualified manufacturers is recommended.

For existing production lines or legacy system support, the A4956KLPTR-T serves as a direct functional substitute for the A4955KLPTR-T. The substitution is valid across all electrical and thermal specifications. The packaging format difference (Cut Tape versus Tape & Reel) affects procurement and assembly logistics but does not impact electrical performance or circuit compatibility.

Both parts maintain identical automotive-grade qualification (AEC-Q100) and RoHS3 compliance, ensuring regulatory and quality standards are preserved during substitution.

Frequently Asked Questions (FAQ)

Q: Are the A4955KLPTR-T and A4956KLPTR-T pin-compatible?

A: Yes. Both parts use the identical 20-TSSOP package with exposed pad. Pinout and electrical characteristics are identical, enabling direct substitution at the circuit board level.

Q: What is the difference between Cut Tape (CT) & Digi-Reel® and Tape & Reel (TR) packaging?

A: Cut Tape format supplies components in individual tape segments, suitable for lower-volume or manual assembly operations. Tape & Reel format supplies components on continuous reels, optimized for high-volume automated pick-and-place assembly. Both formats contain the same component; the difference is in packaging and handling for production environments.

Q: Can I use the A4956KLPTR-T as a drop-in replacement for the A4955KLPTR-T in existing designs?

A: Yes, provided your assembly process can accommodate the Tape & Reel packaging format. No circuit modifications or design changes are required. All electrical specifications, thermal performance, and compliance certifications remain identical.

Q: Are both parts suitable for automotive applications?

A: Yes. Both the A4955KLPTR-T and A4956KLPTR-T carry automotive-grade qualification (AEC-Q100) and are approved for automotive motor control applications within the specified operating temperature range of -40°C to 125°C.

Q: What should I consider when transitioning from A4955KLPTR-T to A4956KLPTR-T?

A: Verify that your assembly equipment and supply chain processes support Tape & Reel format. Confirm component availability and lead times with your distributor. No electrical or thermal re-qualification is necessary due to identical specifications.

Q: Are there any compliance or regulatory differences between these parts?

A: No. Both parts are RoHS3 compliant, REACH unaffected, and carry identical moisture sensitivity levels (MSL 2, 1 Year). Regulatory and environmental compliance status is identical.