MCP48FVB18T-20E/ST Equivalent & Substitute Parts

Part Overview

The MCP48FVB18T-20E/ST is a 10-bit digital-to-analog converter (DAC) manufactured by Microchip Technology, designed for data acquisition applications requiring multiple voltage output channels. This device features four independent D/A converters in a 20-TSSOP surface mount package and operates across automotive-grade specifications with AEC-Q100 qualification. The part is currently in active production status with 3175 units available in inventory.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the same functional category, allowing for design flexibility, supply chain optimization, and inventory management without compromising circuit performance.

Substiute Parts

MCP48FVB18T-20E/ST

Microchip TechnologyIn Stock: 3236MCP48FVB18T-20E/ST Datasheet

Current PartRFQ

MCP48FEB18T-20E/ST

Microchip TechnologyIn Stock: 1583MCP48FEB18T-20E/ST Datasheet

Parametric EquivalentRFQ

MCP48FVB14T-20E/ST

Microchip TechnologyIn Stock: 3222MCP48FVB14T-20E/ST Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MCP48FVB18T-20E/ST is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• 10-bit resolution (Number of Bits)
• Four independent D/A converters (Number of D/A Converters)
• Voltage output type, unbuffered configuration
• SPI serial data interface
• 7.8µs typical settling time
• 2.7V to 5.5V dual supply voltage range (analog and digital)
• ±0.4LSB INL and ±0.05LSB DNL specifications
• -40°C to 125°C operating temperature range

Mechanical Equivalence Criteria:

• 20-TSSOP package with 0.173" width (4.40mm)
• Surface mount technology
• Automotive grade classification
• AEC-Q100 qualification

Compliance Equivalence Criteria:

• ROHS3 compliance
• REACH unaffected status
• EAR99 ECCN classification

All substitute parts listed maintain identical specifications across these parameters, ensuring direct functional and mechanical interchangeability within the specified design constraints.

Parameter Comparison

Engineering Selection Recommendations

All three parts listed—MCP48FVB18T-20E/ST, MCP48FEB18T-20E/ST, and MCP48FVB14T-20E/ST—maintain active product status with full compliance to automotive-grade specifications and AEC-Q100 qualification standards. Each device is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for industrial and automotive applications.

Selection between these equivalent parts should be based on:

Availability: MCP48FVB18T-20E/ST and MCP48FVB14T-20E/ST each maintain inventory levels exceeding 3100 units, while MCP48FEB18T-20E/ST provides 1523 units in stock.

Supply Chain Continuity: All three parts are manufactured by Microchip Technology and carry identical electrical and mechanical specifications, ensuring seamless integration into existing designs without circuit modification.

Compliance Requirements: All parts satisfy identical regulatory and qualification criteria, including automotive-grade classification and AEC-Q100 certification, suitable for applications requiring automotive-level reliability.

Frequently Asked Questions (FAQ)

Q: Can MCP48FEB18T-20E/ST be used as a direct replacement for MCP48FVB18T-20E/ST?

A: Yes. Both parts are parametrically equivalent 10-bit, 4-channel digital-to-analog converters with identical electrical specifications, supply voltage ranges, settling time, and output characteristics. Both are packaged in 20-TSSOP and carry AEC-Q100 automotive qualification. No circuit modifications are required.

Q: What is the difference between MCP48FVB14T-20E/ST and MCP48FVB18T-20E/ST?

A: These parts are parametrically equivalent across all specified electrical and mechanical parameters. The designation difference (FVB14 versus FVB18) reflects internal architectural variations within the Microchip product line, but both deliver identical performance in 10-bit, 4-channel DAC applications with SPI interface and automotive-grade specifications.

Q: Are all three parts suitable for automotive applications?

A: Yes. All three parts carry automotive-grade classification and AEC-Q100 qualification, meeting automotive industry reliability and quality standards. Operating temperature range of -40°C to 125°C supports automotive environmental requirements.

Q: Can these parts be used interchangeably on the same PCB?

A: Yes. All three parts use identical 20-TSSOP packaging with 0.173" width (4.40mm), surface mount configuration, and pin-compatible interfaces. PCB layouts and footprints require no modification for substitution.

Q: What compliance certifications apply to all substitute parts?

A: All parts are ROHS3 compliant and REACH unaffected. ECCN classification is EAR99 for all three devices. Moisture sensitivity level is 3 (168 hours) for MCP48FVB18T-20E/ST and MCP48FVB14T-20E/ST.

Q: Are there any performance differences in settling time or accuracy between these parts?

A: No. All three parts specify identical settling time of 7.8µs typical and identical INL/DNL specifications of ±0.4LSB and ±0.05LSB respectively. Voltage output characteristics, reference type (external), and SPI data interface are identical across all parts.