MCP47FVB18T-20E/ST Equivalent & Substitute Parts

Part Overview

The MCP47FVB18T-20E/ST is a 10-bit Digital to Analog Converter (DAC) manufactured by Microchip Technology, designed for data acquisition applications. This integrated circuit features 8 independent D/A converters with voltage output capability in a 20-pin TSSOP surface mount package. The device is currently in active production status with 2625 units available in stock.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across all critical parameters. The MCP47FVB18T-20E/ST has one parametric equivalent available that meets all functional and packaging requirements.

Key Parameters

Parameter	Value
Number of Bits	10
Number of D/A Converters	8
Settling Time	6µs
Output Type	Voltage - Buffered, Voltage - Unbuffered
Data Interface	I2C
Reference Type	External, Supply
INL/DNL (LSB)	±0.5 (Max)
Operating Temperature Range	-40°C ~ 125°C
Package / Case	20-TSSOP (0.173", 4.40mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution eligibility for the MCP47FVB18T-20E/ST is determined by strict equivalence across the following critical parameters:

Resolution: 10-bit conversion capability
Channel Count: 8 independent D/A converters
Settling Time: 6µs maximum
Output Configuration: Voltage output with buffered and unbuffered options
Communication Protocol: I2C interface
Reference Input: External and supply reference support
Linearity: ±0.5 LSB maximum INL/DNL specification
Temperature Range: -40°C to 125°C operating window
Package Format: 20-TSSOP surface mount package with 0.173" width (4.40mm)
Compliance: ROHS3 compliance and MSL 3 rating

The substitute part MCP47FEB18T-20E/ST maintains identical electrical specifications and mechanical compatibility across all parameters listed above. Both parts are manufactured by Microchip Technology and share the same base product architecture with equivalent performance characteristics.

Parameter Comparison

Parameter	MCP47FVB18T-20E/ST	MCP47FEB18T-20E/ST	Match
Manufacturer	Microchip Technology	Microchip Technology	✓
Category	Data Acquisition	Data Acquisition	✓
Number of Bits	10	10	✓
Number of D/A Converters	8	8	✓
Settling Time	6µs	6µs	✓
Output Type	Voltage - Buffered, Voltage - Unbuffered	Voltage - Buffered, Voltage - Unbuffered	✓
Differential Output	No	No	✓
Data Interface	I2C	I2C	✓
Reference Type	External, Supply	External, Supply	✓
INL/DNL (LSB)	±0.5 (Max)	±0.5 (Max)	✓
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	✓
Package / Case	20-TSSOP (0.173", 4.40mm Width)	20-TSSOP (0.173", 4.40mm Width)	✓
Mounting Type	Surface Mount	Surface Mount	✓
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	✓
Moisture Sensitivity Level (MSL)	3 (168 Hours)	3 (168 Hours)	✓
REACH Status	REACH Unaffected	REACH Unaffected	✓
Product Status	Active	Active	✓

Engineering Selection Recommendations

Both the MCP47FVB18T-20E/ST and MCP47FEB18T-20E/ST are active production devices from Microchip Technology with full ROHS3 compliance and REACH unaffected status. Selection between these parts is based on availability and supply chain considerations rather than technical differentiation.

The MCP47FEB18T-20E/ST currently has higher inventory availability at 3843 units compared to 2625 units for the MCP47FVB18T-20E/ST. Both parts carry identical electrical specifications, package dimensions, and environmental compliance certifications. The 20-TSSOP surface mount package is suitable for automated assembly processes with standard pick-and-place equipment.

Moisture sensitivity level 3 (168 hours) requires standard handling procedures for surface mount components. Both parts maintain equivalent performance across the full -40°C to 125°C operating temperature range, supporting industrial and extended temperature applications.

Frequently Asked Questions (FAQ)

Q: Are the MCP47FVB18T-20E/ST and MCP47FEB18T-20E/ST pin-compatible?

A: Yes. Both devices use the identical 20-TSSOP package with 0.173" width (4.40mm). Pin assignments, spacing, and mechanical dimensions are equivalent, allowing direct substitution on printed circuit boards without layout modifications.

Q: What is the difference between the VB and EB variants in the part numbers?

A: The parameter comparison table shows no electrical or functional differences between these variants. Both maintain 10-bit resolution, 8 D/A converters, 6µs settling time, and identical I2C interface specifications. Differences are internal to Microchip's product line management and do not affect system performance.

Q: Can these parts be used interchangeably in existing designs?

A: Yes. The MCP47FEB18T-20E/ST is a direct parametric equivalent to the MCP47FVB18T-20E/ST. All electrical characteristics, output specifications, reference input options, and operating parameters are identical. No circuit modifications or firmware changes are required for substitution.

Q: What are the moisture handling requirements for these components?

A: Both parts carry MSL 3 rating with a 168-hour floor life. Standard moisture control procedures for surface mount components apply, including storage in dry environments and use of desiccant packaging. Reflow soldering must be completed within the specified floor life window after package opening.

Q: Are both parts suitable for industrial temperature applications?

A: Yes. Both the MCP47FVB18T-20E/ST and MCP47FEB18T-20E/ST operate across the -40°C to 125°C temperature range, supporting industrial and extended temperature environments. Performance specifications remain constant across this entire operating window.

Q: What compliance certifications apply to both parts?

A: Both parts are ROHS3 compliant and REACH unaffected. These certifications confirm compliance with European environmental and hazardous substance restrictions. ECCN classification is EAR99 for both parts, and HTSUS code 8542.39.0001 applies to both devices.

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