MCP1631-E/ST Equivalent & Substitute Parts

Part Overview

The MCP1631-E/ST is a Sepic Regulator Positive Output Step-Up/Step-Down DC-DC Controller IC manufactured by Microchip Technology. This power management integrated circuit operates as a transistor driver for applications requiring flexible voltage conversion across a 3V to 5.5V supply range. The device is classified as Active status and is RoHS3 compliant with unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when packaging format differs or when alternative sourcing is required while maintaining identical electrical and mechanical specifications.

Substiute Parts

MCP1631-E/ST

Microchip TechnologyIn Stock: 4142MCP1631-E/ST Datasheet

Current PartRFQ

MCP1631T-E/ST

Microchip TechnologyIn Stock: 12942MCP1631T-E/ST Datasheet

DirectRFQ

MCP1631V-E/ST

Microchip TechnologyIn Stock: 1359MCP1631V-E/ST Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MCP1631-E/ST are identified based on strict equivalence across all electrical and mechanical parameters. The substitution logic is determined by the following criteria:

Electrical Equivalence Requirements:

• Identical topology (Sepic)
• Identical output type (Transistor Driver)
• Identical output configuration (Positive)
• Identical supply voltage range (3V ~ 5.5V)
• Identical control features (Enable, Frequency Control, Ramp)
• Identical operating temperature range (-40°C ~ 125°C)
• Identical number of outputs (1)
• Identical output phases (1)

Mechanical Equivalence Requirements:

• Identical package type (20-TSSOP)
• Identical package dimensions (0.173", 4.40mm Width)
• Identical mounting type (Surface Mount)

Compliance Equivalence Requirements:

• Identical RoHS status (ROHS3 Compliant)
• Identical MSL rating (1 - Unlimited)
• Identical REACH status (REACH Unaffected)

Substitute parts differ only in packaging format (Tube versus Tape & Reel) or in temperature grade designation within the same base product number (MCP1631). All identified substitutes maintain full electrical and mechanical compatibility with the primary part number.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain Active product status with full RoHS3 compliance and REACH unaffected certification. Selection between MCP1631-E/ST, MCP1631T-E/ST, and MCP1631V-E/ST is determined by packaging and supply chain requirements rather than electrical performance.

MCP1631-E/ST (Tube Packaging): Primary specification with tube packaging format. Suitable for applications where component handling and storage in tube format is preferred.

MCP1631T-E/ST (Tape & Reel Packaging): Direct electrical equivalent with Tape & Reel packaging format. Recommended for high-volume automated assembly processes requiring reel-based component feeding. Highest inventory availability at 12900 pieces.

MCP1631V-E/ST (Tube Packaging): Parametric equivalent with tube packaging format. Maintains identical electrical specifications and compliance certifications as the primary part.

All three parts are manufactured by Microchip Technology and share the same base product number (MCP1631), ensuring design compatibility and interchangeability within the specified electrical and mechanical parameters.

Frequently Asked Questions (FAQ)

Q: Can MCP1631T-E/ST be used as a direct replacement for MCP1631-E/ST?

A: Yes. MCP1631T-E/ST is electrically and mechanically equivalent to MCP1631-E/ST. The only difference is the packaging format: MCP1631T-E/ST uses Tape & Reel packaging while MCP1631-E/ST uses Tube packaging. Both parts are identical in electrical performance, pin configuration, and compliance certifications.

Q: What is the difference between Tube and Tape & Reel packaging?

A: Tube packaging is used for manual component handling and lower-volume applications. Tape & Reel packaging is designed for automated pick-and-place assembly equipment and high-volume production. The electrical and mechanical specifications of the component remain identical regardless of packaging format.

Q: Are all three substitute parts suitable for the same circuit design?

A: Yes. MCP1631-E/ST, MCP1631T-E/ST, and MCP1631V-E/ST are all electrically and mechanically equivalent. They share identical supply voltage ranges (3V ~ 5.5V), operating temperature ranges (-40°C ~ 125°C), control features, and 20-TSSOP package dimensions. Selection is based on packaging preference and inventory availability.

Q: Do these parts require different PCB layouts or footprints?

A: No. All three parts use the identical 20-TSSOP package with 0.173" width and 4.40mm dimensions. PCB footprints and layouts are interchangeable across all substitute parts.

Q: Are there any compliance or certification differences between the substitute parts?

A: No. All three parts maintain identical RoHS3 compliance, REACH unaffected status, MSL 1 (Unlimited) moisture sensitivity rating, and Active product status. Compliance certifications are equivalent across all substitute parts.

Q: Which substitute part should be selected for high-volume production?

A: MCP1631T-E/ST with Tape & Reel packaging is recommended for high-volume automated assembly. This format is optimized for pick-and-place equipment and offers the highest inventory availability at 12900 pieces.

Q: Can MCP1631V-E/ST be substituted for MCP1631-E/ST in existing designs?

A: Yes. MCP1631V-E/ST is a parametric equivalent with identical electrical specifications, control features, and operating parameters. Both use Tube packaging format. The parts are fully interchangeable in circuit design and application.