MCP1631VT-E/ST Equivalent & Substitute Parts

Part Overview

The MCP1631VT-E/ST is a Sepic Regulator Positive Output Step-Up/Step-Down DC-DC Controller IC manufactured by Microchip Technology. This 20-TSSOP surface mount device operates across a 3V to 5.5V supply voltage range and provides transistor driver output for single-phase positive output topologies. The part is currently in active production status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when packaging format differs while maintaining identical electrical and mechanical specifications, or when parametric equivalents share the same functional characteristics and pin configuration.

Substiute Parts

MCP1631VT-E/ST

Microchip TechnologyIn Stock: 793MCP1631VT-E/ST Datasheet

Current PartRFQ

MCP1631V-E/ST

Microchip TechnologyIn Stock: 1359MCP1631V-E/ST Datasheet

DirectRFQ

MCP1631T-E/ST

Microchip TechnologyIn Stock: 12942MCP1631T-E/ST Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MCP1631VT-E/ST is determined by strict adherence to the following criteria:

Primary Substitution Criteria:

• Identical base product number (MCP1631)
• Matching topology (Sepic)
• Identical output type (Transistor Driver)
• Identical function (Step-Up/Step-Down)
• Identical output configuration (Positive)
• Identical package type (20-TSSOP)
• Identical supply voltage range (3V ~ 5.5V)
• Identical operating temperature range (-40°C ~ 125°C)
• Identical control features (Enable, Frequency Control, Ramp)
• Active product status
• RoHS3 compliance

Allowable Variation:

• Packaging format (Tape & Reel vs. Tube) does not affect electrical or mechanical compatibility

The MCP1631VT-E/ST differs from substitute parts only in packaging format (Tape & Reel). All electrical characteristics, pin configurations, thermal specifications, and functional parameters remain identical across all qualified substitutes.

Parameter Comparison

Engineering Selection Recommendations

All three parts—MCP1631VT-E/ST, MCP1631V-E/ST, and MCP1631T-E/ST—are functionally and electrically identical. Selection between these parts is determined solely by packaging and supply chain requirements:

MCP1631VT-E/ST (Tape & Reel): Primary specification. Suitable for automated assembly processes requiring tape and reel packaging. Current inventory: 760 units.

MCP1631V-E/ST (Tube): Direct substitute with identical electrical and mechanical specifications. Packaging format differs only in presentation. Current inventory: 1305 units.

MCP1631T-E/ST (Tape & Reel): Parametric equivalent with identical specifications and packaging format to the main part. Highest inventory availability at 12900 units. Suitable for high-volume production requirements.

All parts maintain active product status, full RoHS3 compliance, and unlimited moisture sensitivity rating. Selection should be based on assembly equipment compatibility and inventory availability rather than technical performance differences.

Frequently Asked Questions (FAQ)

Q: Can MCP1631V-E/ST replace MCP1631VT-E/ST in production?

A: Yes. Both parts are electrically and mechanically identical. The only difference is packaging format (Tube vs. Tape & Reel). Compatibility depends on whether your assembly equipment can process tube packaging.

Q: What is the difference between MCP1631VT-E/ST and MCP1631T-E/ST?

A: Both use identical Tape & Reel packaging and share all electrical specifications. They are parametric equivalents with no functional differences. Selection may be based on inventory availability or supplier preference.

Q: Are all three parts pin-compatible?

A: Yes. All three parts use the 20-TSSOP package with identical pin configuration and electrical characteristics.

Q: Do packaging differences affect circuit performance?

A: No. Packaging format (Tape & Reel or Tube) does not affect electrical performance, thermal characteristics, or functional operation. The difference is purely in how the parts are supplied and handled during assembly.

Q: Are these parts suitable for high-temperature applications?

A: Yes. All three parts operate across the -40°C to 125°C junction temperature range, supporting industrial and automotive temperature requirements.

Q: What compliance certifications apply to all substitute parts?

A: All parts are RoHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited) moisture sensitivity rating. ECCN classification is EAR99 for all variants.