MCP4641T-502E/ST Equivalent & Substitute Parts

Part Overview

The MCP4641T-502E/ST is a digital potentiometer manufactured by Microchip Technology, classified as a Data Acquisition component. This integrated circuit provides a 5kΩ resistance network with 129 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 designs.

Key Parameters

Parameter	Value
Resistance (Ohms)	5k
Number of Circuits	2
Number of Taps	129
Interface	I2C
Memory Type	Non-Volatile
Voltage Supply Range	1.8V ~ 5.5V
Taper	Linear
Package / Case	14-TSSOP (0.173", 4.40mm Width)
Operating Temperature	-40°C ~ 125°C
Tolerance	±20%
Temperature Coefficient (Typ)	150ppm/°C
Resistance - Wiper (Ohms) (Typ)	75
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MCP4641T-502E/ST is determined by strict equivalence across all electrical and mechanical parameters. The primary differentiator between the main part and identified substitutes is the supplier packaging configuration. Both the main part (Tape & Reel packaging) and the substitute part (Tube packaging) maintain identical specifications across all critical parameters:

Resistance value and tap configuration
I2C interface protocol and non-volatile memory architecture
Supply voltage range and operating temperature limits
Physical package dimensions and mounting characteristics
Compliance certifications and regulatory status

The MCP4641-502E/ST in Tube packaging represents a direct functional equivalent, differing only in the delivery format rather than component performance or application suitability.

Parameter Comparison

Parameter	MCP4641T-502E/ST (Tape & Reel)	MCP4641-502E/ST (Tube)	Match
Manufacturer	Microchip Technology	Microchip Technology	✓
Resistance (Ohms)	5k	5k	✓
Number of Circuits	2	2	✓
Number of Taps	129	129	✓
Interface	I2C	I2C	✓
Memory Type	Non-Volatile	Non-Volatile	✓
Voltage - Supply	1.8V ~ 5.5V	1.8V ~ 5.5V	✓
Taper	Linear	Linear	✓
Package / Case	14-TSSOP (0.173", 4.40mm Width)	14-TSSOP (0.173", 4.40mm Width)	✓
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	✓
Tolerance	±20%	±20%	✓
Temperature Coefficient (Typ)	150ppm/°C	150ppm/°C	✓
Resistance - Wiper (Ohms) (Typ)	75	75	✓
Mounting Type	Surface Mount	Surface Mount	✓
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	✓
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	✓
Packaging Format	Tape & Reel (TR)	Tube	Different

Engineering Selection Recommendations

Both the MCP4641T-502E/ST and MCP4641-502E/ST are active production components from Microchip Technology with identical electrical and mechanical specifications. Selection between these parts should be based on procurement and assembly requirements:

The Tape & Reel format (MCP4641T-502E/ST) is optimized for high-volume automated assembly operations, providing components in continuous tape configuration suitable for pick-and-place equipment.

The Tube packaging format (MCP4641-502E/ST) accommodates lower-volume production runs, manual assembly processes, or applications where component handling and storage differ from automated manufacturing environments.

Both variants maintain ROHS3 compliance and identical performance characteristics across the specified operating temperature range of -40°C to 125°C. The selection between packaging formats does not affect circuit performance, reliability, or functional compatibility.

Frequently Asked Questions (FAQ)

Q: Are MCP4641T-502E/ST and MCP4641-502E/ST electrically identical?

A: Yes. Both parts are manufactured by Microchip Technology with identical electrical specifications, including 5kΩ resistance, 129 taps, 2 circuits, I2C interface, and non-volatile memory. The only difference is the packaging format: Tape & Reel versus Tube.

Q: Can I substitute MCP4641-502E/ST (Tube) for MCP4641T-502E/ST (Tape & Reel) in my design?

A: Yes, from a functional and electrical standpoint. The component specifications are identical. However, the packaging format affects procurement logistics and assembly processes. Verify that your assembly equipment and supply chain can accommodate the Tube packaging format.

Q: What is the significance of the packaging difference?

A: Tape & Reel packaging is designed for automated pick-and-place assembly at high volumes. Tube packaging is suitable for manual handling, lower-volume production, or applications where components are assembled individually. The physical component itself is identical.

Q: Do both parts meet the same compliance standards?

A: Yes. Both MCP4641T-502E/ST and MCP4641-502E/ST are ROHS3 compliant, REACH unaffected, and carry identical regulatory classifications (ECCN: EAR99, HTSUS: 8542.39.0001).

Q: What is the operating temperature range for both parts?

A: Both parts operate across -40°C to 125°C. The temperature coefficient is 150ppm/°C typical for both variants.

Q: Are there any differences in moisture sensitivity or storage requirements?

A: Both parts have Moisture Sensitivity Level (MSL) of 1 (Unlimited), indicating no special moisture control requirements during storage or handling.

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