ATSHA204-SH-DA-B Equivalent & Substitute Parts

Part Overview

The ATSHA204-SH-DA-B is an authentication chip manufactured by Microchip Technology, designed for networking and communications applications. This surface-mount device operates as a CryptoAuthentication™ component in an 8-SOIC package format. The part is currently classified as obsolete, which necessitates identification of active equivalent alternatives to maintain supply chain continuity and support ongoing system requirements.

Substiute Parts

ATSHA204-SH-DA-B

Microchip TechnologyIn Stock: 2144ATSHA204-SH-DA-B Datasheet

Current PartRFQ

ATSHA204A-SSHDA-B

Microchip TechnologyIn Stock: 100328ATSHA204A-SSHDA-B Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ATSHA204-SH-DA-B is determined by the following critical parameters:

Mandatory Matching Criteria:

• Base product number (ATSHA204 series)
• Package type (8-SOIC with 0.154" / 3.90mm width)
• Mounting technology (Surface Mount)
• Functional classification (Authentication Chip)
• Application domain (Networking and Communications)
• Regulatory compliance (ROHS3 Compliant, REACH Unaffected)

The ATSHA204A-SSHDA-B qualifies as a direct substitute based on identical alignment across all mandatory parameters. Both parts share the same base product architecture, identical physical package specifications, and equivalent regulatory certifications required for deployment in equivalent system designs.

Parameter Comparison

Engineering Selection Recommendations

The ATSHA204A-SSHDA-B is the appropriate substitute for the obsolete ATSHA204-SH-DA-B. Selection rationale is based on the following factors:

Product Status: The ATSHA204-SH-DA-B is classified as obsolete, while the ATSHA204A-SSHDA-B maintains active product status with Microchip Technology, ensuring continued availability and manufacturing support.

Regulatory Compliance: Both parts maintain identical ROHS3 compliance and REACH unaffected status, satisfying equivalent environmental and regulatory requirements for deployment in regulated applications.

Physical and Functional Compatibility: Identical package specifications (8-SOIC, 0.154" width), mounting technology (surface mount), and functional classification (authentication chip) ensure direct compatibility with existing PCB designs and assembly processes.

Supply Chain Continuity: The ATSHA204A-SSHDA-B demonstrates significantly higher inventory availability (100,300 pieces) compared to the obsolete part, supporting sustained production and procurement requirements.

Frequently Asked Questions (FAQ)

Q: Can the ATSHA204A-SSHDA-B be used as a direct replacement for the ATSHA204-SH-DA-B in existing designs?

A: Yes. Both parts share identical package specifications, mounting technology, and functional classification within the CryptoAuthentication™ series. No PCB redesign or assembly process modification is required.

Q: What is the primary difference between these two parts?

A: The ATSHA204-SH-DA-B is obsolete, while the ATSHA204A-SSHDA-B is an active product. The substitute part includes a different moisture sensitivity level specification (MSL 3 versus MSL 1) and is supplied in tube packaging rather than standard packaging.

Q: Are there any regulatory or compliance differences between the parts?

A: No. Both parts maintain identical ROHS3 compliance and REACH unaffected status. Regulatory requirements for deployment in equivalent applications are satisfied by either part.

Q: What packaging formats are available for the substitute part?

A: The ATSHA204A-SSHDA-B is supplied in tube packaging, which is standard for active production components from Microchip Technology.

Q: Is the ATSHA204A-SSHDA-B suitable for networking and communications applications?

A: Yes. The substitute part is specified for identical applications as the original part, including networking and communications system requirements.