MCP4441T-503E/ST Digital Potentiometer Equivalent & Substitute Parts

Part Overview

The MCP4441T-503E/ST is a 4-circuit digital potentiometer with 50kΩ resistance and 129 taps, featuring I2C interface and non-volatile memory. This component is classified as active product status and is suitable for precision analog signal control applications requiring programmable resistance adjustment. Alternative part sourcing becomes necessary due to inventory availability, packaging format requirements, or supply chain considerations while maintaining identical electrical and mechanical specifications.

Substiute Parts

MCP4441T-503E/ST

Microchip TechnologyIn Stock: 772MCP4441T-503E/ST Datasheet

Current PartRFQ

MCP4441-503E/ST

Microchip TechnologyIn Stock: 3495MCP4441-503E/ST Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MCP4441T-503E/ST is determined by strict equivalence across the following critical parameters:

• Resistance value: 50kΩ
• Circuit count: 4 circuits
• Tap resolution: 129 taps
• Interface protocol: I2C
• Memory configuration: Non-Volatile
• Supply voltage range: 1.8V ~ 5.5V
• Package type: 20-TSSOP
• Taper characteristic: Linear
• Operating temperature range: -40°C ~ 125°C

The identified substitute part maintains identical electrical specifications and mechanical form factor. Substitution is valid when all parameters listed above match exactly. Packaging format (Tape & Reel versus Tube) does not affect electrical or mechanical compatibility and represents a logistics consideration only.

Parameter Comparison

Engineering Selection Recommendations

Both MCP4441T-503E/ST and MCP4441-503E/ST are active products manufactured by Microchip Technology with identical electrical and mechanical specifications. Selection between these parts should be based on the following factors:

Packaging Format Consideration: The main part is supplied in Tape & Reel format, while the substitute is supplied in Tube format. This distinction affects handling, storage, and automated assembly processes but does not impact electrical performance or PCB integration.

Moisture Sensitivity Level (MSL): The main part carries MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. The substitute carries MSL 3 (168 Hours), requiring controlled storage conditions and limiting shelf life to 168 hours after bag opening under specified humidity conditions. This parameter becomes critical in manufacturing environments with extended component storage or high-humidity conditions.

Compliance Status: Both parts maintain ROHS3 compliance and REACH Unaffected status, ensuring regulatory compatibility across EU and international markets.

Product Status: Both parts are classified as Active, confirming ongoing manufacturer support and availability.

Selection of the substitute part is appropriate when packaging format (Tube) aligns with assembly requirements and moisture sensitivity management (MSL 3) is compatible with manufacturing processes and storage infrastructure.

Frequently Asked Questions (FAQ)

Q: Can MCP4441-503E/ST replace MCP4441T-503E/ST in existing designs?

A: Yes. Both parts are electrically and mechanically identical across all functional parameters including resistance value, circuit count, tap resolution, I2C interface, supply voltage range, operating temperature, and package form factor. The difference in packaging format (Tube versus Tape & Reel) and moisture sensitivity level does not affect circuit performance or PCB compatibility.

Q: What is the significance of the different Moisture Sensitivity Levels?

A: MSL 1 (Unlimited) indicates the main part has no moisture absorption restrictions and can be stored indefinitely in standard conditions. MSL 3 (168 Hours) for the substitute requires that the component be used within 168 hours of bag opening under specified humidity conditions. This affects component handling procedures and storage infrastructure but not electrical function.

Q: Are both parts suitable for the same operating temperature range?

A: Yes. Both MCP4441T-503E/ST and MCP4441-503E/ST operate across -40°C to 125°C, with identical temperature coefficient specifications of 150ppm/°C.

Q: Does packaging format affect circuit design or PCB layout?

A: No. Tape & Reel and Tube packaging formats contain identical components with identical 20-TSSOP package dimensions (0.173", 4.40mm Width). Packaging format affects only component handling, storage, and automated assembly processes, not electrical specifications or PCB integration.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both MCP4441T-503E/ST and MCP4441-503E/ST are ROHS3 Compliant and REACH Unaffected, meeting regulatory requirements for EU and international markets.

Q: What is the I2C interface configuration for these parts?

A: Both parts feature I2C interface with selectable address capability, enabling multiple devices on a single I2C bus. The 4-circuit configuration with 129 taps per circuit provides 50kΩ resistance adjustment with non-volatile memory storage of wiper positions.