MCP4351T-503E/ST Equivalent & Substitute Parts

Part Overview

The MCP4351T-503E/ST is a digital potentiometer manufactured by Microchip Technology, classified as a Data Acquisition component. This integrated circuit provides 50kΩ resistance with 4 independent circuits and 257 taps, controlled via SPI interface. The device operates across a supply voltage range of 1.8V to 5.5V and maintains linear taper characteristics suitable for precision analog signal adjustment applications.

The MCP4351T-503E/ST is currently in active product status. Identifying equivalent substitute parts becomes necessary when the Tape & Reel packaging variant is unavailable or when alternative packaging formats better suit procurement requirements or inventory management strategies.

Substiute Parts

MCP4351T-503E/ST

Microchip TechnologyIn Stock: 806MCP4351T-503E/ST Datasheet

Current PartRFQ

MCP4351-503E/ST

Microchip TechnologyIn Stock: 1325MCP4351-503E/ST Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MCP4351T-503E/ST are identified based on strict equivalence across the following critical parameters:

• Resistance value: 50kΩ
• Number of independent circuits: 4
• Number of taps: 257
• Control interface: SPI
• Taper characteristic: Linear
• Supply voltage compatibility: 1.8V ~ 5.5V
• Operating temperature range: -40°C ~ 125°C
• Package footprint: 20-TSSOP
• Surface mount configuration

The MCP4351-503E/ST qualifies as a direct substitute, differing only in packaging format (Tube versus Tape & Reel). Both variants share identical electrical specifications, pin configuration, and functional performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both the MCP4351T-503E/ST and MCP4351-503E/ST maintain active product status with Microchip Technology. Selection between these variants depends solely on packaging and procurement requirements:

The MCP4351T-503E/ST in Tape & Reel format is optimized for high-volume automated assembly operations. The MCP4351-503E/ST in Tube packaging accommodates lower-volume applications or manual assembly workflows.

Both parts carry identical ROHS3 compliance, REACH unaffected status, and MSL rating of 1 (Unlimited), confirming equivalent environmental and regulatory standing. Electrical performance, thermal characteristics, and functional specifications are identical across both variants.

Frequently Asked Questions (FAQ)

Q: Can MCP4351-503E/ST replace MCP4351T-503E/ST in production?

A: Yes. Both parts are electrically and functionally identical. The difference is packaging format only. Tape & Reel suits automated pick-and-place assembly, while Tube packaging is suitable for manual handling or lower-volume production.

Q: Are the pin configurations identical?

A: Yes. Both variants use the 20-TSSOP package with identical pinout and electrical characteristics.

Q: Do both parts meet the same compliance standards?

A: Yes. Both are ROHS3 compliant, REACH unaffected, and carry MSL rating 1 (Unlimited).

Q: What is the functional difference between these parts?

A: There is no functional difference. Both provide 50kΩ resistance, 4 circuits, 257 taps, SPI interface, and identical operating specifications.

Q: Which packaging format should I select?

A: Select Tape & Reel (MCP4351T-503E/ST) for automated assembly lines. Select Tube (MCP4351-503E/ST) for manual assembly, prototyping, or lower-volume applications.

Q: Are supply voltage and temperature ranges identical?

A: Yes. Both operate across 1.8V to 5.5V supply voltage and -40°C to 125°C temperature range.