MCP3302-BI/ST Equivalent & Substitute Parts

Part Overview

The MCP3302-BI/ST is a 13-bit Analog to Digital Converter (ADC) manufactured by Microchip Technology, designed for data acquisition applications requiring precision analog signal conversion. This SAR (Successive Approximation Register) architecture device supports 2 or 4 input channels with both differential and single-ended input configurations, interfacing via SPI protocol. The part is currently in active production status with 5418 units in stock. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the same product family, enabling component sourcing flexibility while preserving circuit functionality.

Substiute Parts

MCP3302-BI/ST

Microchip TechnologyIn Stock: 5505MCP3302-BI/ST Datasheet

Current PartRFQ

MCP3302-CI/ST

Microchip TechnologyIn Stock: 905MCP3302-CI/ST Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The MCP3302-BI/ST and MCP3302-CI/ST are parametric equivalents within the MCP3302 base product family. Substitution eligibility is determined by matching the following critical parameters:

• 13-bit resolution and 100 kSPS sampling rate
• 2 or 4 configurable input channels
• Differential and single-ended input support
• SPI serial interface protocol
• SAR architecture with external reference
• 5V analog and digital supply voltages
• -40°C to 85°C operating temperature range
• 14-TSSOP surface mount package
• ROHS3 compliance and MSL Level 1 rating

Both parts share identical electrical specifications and mechanical packaging, differing only in temperature grade designation (BI vs. CI suffix). This distinction reflects manufacturing test conditions and quality assurance protocols rather than functional capability differences within the specified operating range.

Parameter Comparison

Engineering Selection Recommendations

Both MCP3302-BI/ST and MCP3302-CI/ST are active production parts with full ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for industrial and commercial applications. Selection between these equivalents should be based on inventory availability and supply chain requirements rather than functional performance, as both parts deliver identical electrical and mechanical specifications within the -40°C to 85°C operating range.

The MCP3302-BI/ST currently maintains higher inventory levels (5418 units) compared to the MCP3302-CI/ST (838 units), making it the preferred choice for immediate procurement needs. Both parts are suitable for direct substitution in existing designs without circuit modification or re-qualification.

Frequently Asked Questions (FAQ)

Q: Can MCP3302-CI/ST replace MCP3302-BI/ST in production designs?

A: Yes. Both parts are parametric equivalents with identical electrical specifications, resolution, sampling rate, input configurations, and package type. The suffix designation reflects manufacturing test protocols and does not affect functional performance within the specified operating temperature range.

Q: Are there any package or pinout differences between these substitutes?

A: No. Both parts use the 14-TSSOP surface mount package with identical pinout and mechanical dimensions (0.173" width, 4.40mm). PCB layouts and footprints are directly interchangeable.

Q: What determines substitution eligibility for MCP3302 variants?

A: Substitution is valid when the following parameters match: 13-bit resolution, 100 kSPS sampling rate, 2 or 4 input channels, SPI interface, SAR architecture, external reference type, 5V supply voltages, and 14-TSSOP package. Temperature grade suffix variations (BI vs. CI) do not affect substitution eligibility.

Q: Are both parts compliant with current regulatory standards?

A: Yes. Both MCP3302-BI/ST and MCP3302-CI/ST are ROHS3 compliant, REACH unaffected, and carry MSL Level 1 (Unlimited) moisture sensitivity ratings, meeting current industrial and commercial component standards.

Q: Which part should be selected for new designs?

A: Either part is suitable for new designs. Selection should be based on inventory availability and supply chain lead times. The MCP3302-BI/ST currently has higher stock levels and may offer faster procurement.