AT97SC3205T-H3M4B00B Equivalent & Substitute Parts

Part Overview

The AT97SC3205T-H3M4B00B is an embedded Trusted Platform Module (TPM) integrated circuit manufactured by Microchip Technology. This component functions as a secure cryptographic processor with I2C interface connectivity, designed for applications requiring hardware-based security and trusted computing capabilities. The part is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives that maintain electrical and mechanical compatibility for ongoing system support and new designs.

Substiute Parts

AT97SC3205T-H3M4B00B

Microchip TechnologyIn Stock: 823AT97SC3205T-H3M4B00B Datasheet

Current PartRFQ

AT97SC3205T-H3M4C00B

Microchip TechnologyIn Stock: 1394AT97SC3205T-H3M4C00B Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AT97SC3205T-H3M4B00B is determined by strict equivalence across the following critical parameters:

• Manufacturer and Base Product Number: Both the main part and substitute must originate from Microchip Technology and share the AT97SC3205T base product designation
• Core Architecture: AVR processor core must be maintained
• Interface Protocol: I2C interface is mandatory for system compatibility
• I/O Configuration: 4 I/O pins required
• Supply Voltage: 3.3V operation is non-negotiable
• Operating Temperature Range: -40°C to 85°C specification must be met or exceeded
• Package Specification: 32-VQFN (4x4) with exposed pad is the mechanical requirement
• Memory Type: EEPROM program memory type must be preserved
• Compliance Standards: RoHS3 compliance and MSL 1 rating must be maintained

The AT97SC3205T-H3M4C00B meets all these criteria and qualifies as a direct substitute. The primary distinction between these parts is packaging format (Tray vs. standard packaging) and product status (Active vs. Discontinued).

Parameter Comparison

Engineering Selection Recommendations

The AT97SC3205T-H3M4C00B is the qualified substitute for the AT97SC3205T-H3M4B00B based on the following engineering criteria:

Electrical Compatibility: Both parts maintain identical electrical specifications across all critical parameters including processor architecture, interface protocol, I/O configuration, supply voltage, and operating temperature range. No circuit redesign or firmware modification is required.

Mechanical Compatibility: Both parts utilize the same 32-VQFN (4x4) package with exposed pad configuration. PCB footprints, solder reflow profiles, and assembly processes remain unchanged.

Compliance and Certification: Both parts maintain ROHS3 compliance and MSL 1 rating, ensuring equivalent environmental and reliability standards.

Product Status Advantage: The substitute part maintains Active product status with higher inventory availability (1347 units vs. 745 units), providing superior supply chain continuity and reduced procurement risk.

Packaging Consideration: The substitute is supplied in Tray packaging format, which may require adjustment to receiving and storage procedures depending on existing logistics infrastructure.

Frequently Asked Questions (FAQ)

Q: Can AT97SC3205T-H3M4C00B be used as a direct replacement for AT97SC3205T-H3M4B00B in existing designs?

A: Yes. Both parts are electrically and mechanically identical across all functional parameters. No circuit modifications, PCB redesign, or firmware changes are necessary. The substitute can be soldered using identical assembly processes and reflow profiles.

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

A: The primary differences are packaging format (Tray vs. standard) and product lifecycle status (Active vs. Discontinued). The electrical and mechanical specifications are identical.

Q: Are there any compatibility concerns with the I2C interface?

A: No. Both parts implement identical I2C interface specifications with 4 I/O pins. Bus voltage, timing, and protocol requirements are equivalent.

Q: Does the substitute part meet the same compliance requirements?

A: Yes. Both parts are ROHS3 compliant with MSL 1 rating. Environmental and regulatory compliance is maintained.

Q: What is the impact of Tray packaging on procurement?

A: Tray packaging affects receiving, storage, and handling procedures. Verify that your receiving and inventory management systems accommodate Tray format. Component functionality and performance are unaffected.

Q: Is firmware or software modification required when switching to the substitute part?

A: No. Both parts use identical AVR processor cores with EEPROM memory. Existing firmware and software require no modification.