MCP4251T-503E/ST Equivalent & Substitute Parts

Part Overview

The MCP4251T-503E/ST is a digital potentiometer manufactured by Microchip Technology, classified as a Data Acquisition component. This device features a 50kΩ resistance with 257 taps across 2 circuits, utilizing SPI interface for control. The part is currently in Active product status with 2400 units in stock as new original inventory. Alternative models are necessary to address supply chain flexibility, packaging preferences, or inventory availability across different distribution channels.

Substiute Parts

MCP4251T-503E/ST

Microchip TechnologyIn Stock: 2452MCP4251T-503E/ST Datasheet

Current PartRFQ

MCP4251-503E/ST

Microchip TechnologyIn Stock: 3971MCP4251-503E/ST Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MCP4251T-503E/ST is determined by strict equivalence across the following critical parameters:

• Resistance value: 50kΩ
• Number of circuits: 2
• Number of taps: 257
• Interface protocol: SPI
• Supply voltage range: 1.8V ~ 5.5V
• Tolerance: ±20%
• Temperature coefficient: 150ppm/°C
• Operating temperature range: -40°C ~ 125°C
• Package type: 14-TSSOP
• Mounting type: Surface Mount
• Memory type: Volatile
• Wiper resistance: 75Ω (Typ)

The substitute part MCP4251-503E/ST maintains identical electrical and mechanical specifications. The primary distinction is packaging format: the substitute is supplied in Tube packaging versus the main part's unspecified packaging, with higher inventory availability (3890 units versus 2400 units).

Parameter Comparison

Engineering Selection Recommendations

Both the MCP4251T-503E/ST and MCP4251-503E/ST are Active status products from Microchip Technology with identical electrical specifications and compliance certifications. Selection between these parts should be based on packaging requirements and inventory availability. The substitute part offers higher stock levels and Tube packaging format. Both parts maintain ROHS3 compliance and REACH Unaffected status, suitable for applications requiring regulatory adherence. The MSL rating of 1 (Unlimited) indicates minimal moisture sensitivity, reducing handling constraints during assembly and storage.

Frequently Asked Questions (FAQ)

Q: Are MCP4251T-503E/ST and MCP4251-503E/ST electrically interchangeable?

A: Yes. Both parts share identical electrical specifications including 50kΩ resistance, 257 taps, 2 circuits, SPI interface, supply voltage range of 1.8V to 5.5V, and operating temperature range of -40°C to 125°C.

Q: What is the difference between these two part numbers?

A: The primary difference is packaging format. MCP4251-503E/ST is supplied in Tube packaging, while MCP4251T-503E/ST packaging format is not specified in the provided data. The substitute also has higher inventory availability.

Q: Can I use MCP4251-503E/ST as a direct replacement in existing designs?

A: Yes, provided your design accommodates Tube packaging format. The electrical and mechanical specifications are identical, including the 14-TSSOP package dimensions and surface mount mounting type.

Q: Are there any compliance differences between these parts?

A: No. Both parts maintain identical RoHS3 compliance, REACH Unaffected status, and MSL rating of 1 (Unlimited).

Q: What does the "257 Taps" specification mean for substitution purposes?

A: The 257 taps define the resolution of the digital potentiometer. Both parts have identical tap counts, ensuring equivalent performance in resistance adjustment granularity.

Q: Is the SPI interface identical between both parts?

A: Yes. Both parts utilize SPI interface protocol for control and communication, ensuring software and hardware compatibility.