MCP4661T-103E/ST Equivalent & Substitute Parts

Part Overview

The MCP4661T-103E/ST is a digital potentiometer manufactured by Microchip Technology, classified as a Data Acquisition component. This integrated circuit provides a 10kΩ resistance with 257 taps across 2 circuits, controlled via I2C interface with non-volatile memory. The device is currently in active production status. Substitute parts are identified when packaging or supplier configurations differ while maintaining identical electrical and mechanical specifications, ensuring functional interchangeability in circuit applications.

Substiute Parts

MCP4661T-103E/ST

Microchip TechnologyIn Stock: 1199MCP4661T-103E/ST Datasheet

Current PartRFQ

MCP4661-103E/ST

Microchip TechnologyIn Stock: 1351MCP4661-103E/ST Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MCP4661T-103E/ST is determined by strict equivalence across core electrical and mechanical parameters. The following parameters must remain identical for functional interchangeability:

• Resistance value: 10kΩ
• Number of circuits: 2
• Number of taps: 257
• Interface protocol: I2C
• Memory type: Non-Volatile
• Supply voltage range: 1.8V ~ 5.5V
• Operating temperature range: -40°C ~ 125°C
• Package designation: 14-TSSOP
• Mounting type: Surface Mount
• Taper characteristic: Linear

Variations in packaging format (Tape & Reel versus Tube) and supplier inventory do not affect electrical or mechanical compatibility. The identified substitute maintains all specified parameters while differing only in supplier packaging configuration.

Parameter Comparison

Engineering Selection Recommendations

Both the MCP4661T-103E/ST and MCP4661-103E/ST are active production components from Microchip Technology with identical electrical specifications and compliance certifications. Selection between these parts is determined by packaging and supply chain requirements rather than technical performance.

The MCP4661T-103E/ST in Tape & Reel format is suitable for high-volume automated assembly operations. The MCP4661-103E/ST in Tube packaging is appropriate for lower-volume applications, manual assembly, or when tape-and-reel handling equipment is unavailable.

Both variants maintain ROHS3 compliance, REACH unaffected status, and MSL Level 1 rating. No functional or reliability differences exist between the two packaging configurations.

Frequently Asked Questions (FAQ)

Q: Can MCP4661-103E/ST replace MCP4661T-103E/ST in production?

A: Yes. Both parts are electrically and mechanically identical. The difference is packaging format only. Tape & Reel (TR) designation in MCP4661T-103E/ST indicates reel packaging for automated pick-and-place assembly. Tube packaging in MCP4661-103E/ST is suitable for manual handling or lower-volume production. Circuit performance and specifications are identical.

Q: Are there any compliance or certification differences?

A: No. Both parts carry identical RoHS3 compliance, REACH unaffected status, and MSL Level 1 rating. No environmental or regulatory differences exist.

Q: What is the significance of the "T" in MCP4661T-103E/ST?

A: The "T" designates Tape & Reel packaging format. The absence of "T" in MCP4661-103E/ST indicates Tube packaging. This is a supplier packaging distinction only and does not affect electrical performance or pin configuration.

Q: Can these parts be used interchangeably in the same PCB assembly process?

A: Interchangeability depends on assembly equipment. Automated assembly lines using tape-and-reel feeders require the MCP4661T-103E/ST variant. Manual assembly or equipment designed for tube packaging requires MCP4661-103E/ST. The 14-TSSOP package dimensions are identical for both variants.

Q: Are there inventory or lead time considerations?

A: Current inventory differs between variants. MCP4661T-103E/ST has 1137 pieces in stock; MCP4661-103E/ST has 1302 pieces in stock. Lead time and availability may vary by supplier and region.