MCP4461T-104E/ST Equivalent & Substitute Parts

Part Overview

The MCP4461T-104E/ST is a digital potentiometer from Microchip Technology's WiperLock™ series, designed for data acquisition applications requiring programmable resistance control. This 100kΩ, 4-circuit device features an I2C interface with 257 taps and non-volatile memory, operating across a 1.8V to 5.5V supply range. The part is actively produced and ROHS3 compliant. Substitute parts are identified when equivalent electrical specifications, mechanical compatibility, and functional characteristics align with the original design requirements.

Substiute Parts

MCP4461T-104E/ST

Microchip TechnologyIn Stock: 787MCP4461T-104E/ST Datasheet

Current PartRFQ

MCP4461-104E/ST

Microchip TechnologyIn Stock: 3446MCP4461-104E/ST Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MCP4461T-104E/ST is determined by strict equivalence across the following critical parameters:

• Resistance value: 100kΩ
• Circuit count: 4 circuits
• Tap resolution: 257 taps
• Interface protocol: I2C
• Memory configuration: Non-volatile
• Supply voltage range: 1.8V ~ 5.5V
• Package type: 20-TSSOP
• Operating temperature range: -40°C ~ 125°C
• Taper characteristic: Linear
• Integrated features: Mute and selectable address functionality

Parts meeting all these specifications are classified as direct substitutes. Packaging format (Tape & Reel versus Tube) does not affect electrical or functional compatibility and represents a logistics distinction only.

Parameter Comparison

Engineering Selection Recommendations

Both the MCP4461T-104E/ST and MCP4461-104E/ST are active products from Microchip Technology with identical electrical and functional specifications. Both achieve ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements.

The primary distinction between these parts is packaging format and moisture sensitivity classification. The MCP4461T-104E/ST is supplied in Tape & Reel format with MSL 1 (unlimited moisture exposure tolerance), while the MCP4461-104E/ST is supplied in Tube format with MSL 3 (168-hour moisture exposure limit). Selection between these variants depends on procurement logistics, storage conditions, and assembly process requirements rather than electrical performance.

Frequently Asked Questions (FAQ)

Q: Are MCP4461T-104E/ST and MCP4461-104E/ST electrically identical?

A: Yes. Both parts share identical electrical specifications, including 100kΩ resistance, 4-circuit configuration, 257-tap resolution, I2C interface, non-volatile memory, and operating parameters across the full -40°C to 125°C temperature range.

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

A: Tape & Reel (TR) and Tube are logistics and assembly formats. Tape & Reel packaging is optimized for automated pick-and-place assembly, while Tube packaging is used for manual handling or lower-volume applications. The actual component is identical.

Q: Does the MSL rating difference affect circuit performance?

A: No. Moisture Sensitivity Level (MSL) ratings specify storage and handling requirements prior to soldering, not operational performance. MSL 1 allows unlimited moisture exposure, while MSL 3 requires storage in controlled humidity conditions (168-hour limit at 85% RH/85°C). Both parts perform identically once soldered into the circuit.

Q: Can I substitute MCP4461-104E/ST for MCP4461T-104E/ST in my design?

A: Yes, provided your assembly process and storage conditions accommodate the MSL 3 moisture sensitivity requirement of the Tube-packaged variant. If your facility maintains controlled humidity storage, both parts are functionally interchangeable.

Q: Are there any pin configuration differences between these parts?

A: No. Both parts use the identical 20-TSSOP package with the same pinout, footprint, and electrical connections.