ATSHA204-SH-DA-T Authentication Chip Equivalent & Substitute Parts

Part Overview

The ATSHA204-SH-DA-T is an authentication chip manufactured by Microchip Technology, classified within the CryptoAuthentication™ series. This component functions as a secure authentication integrated circuit in 8-SOIC surface mount packaging. The part is currently listed as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and procurement continuity. The ATSHA204-SH-DA-T remains available in inventory (5074 pcs), but obsolete status indicates limited future availability and potential supply discontinuation.

Substiute Parts

ATSHA204-SH-DA-T

Microchip TechnologyIn Stock: 5176ATSHA204-SH-DA-T Datasheet

Current PartRFQ

ATSHA204A-SSHDA-T

Microchip TechnologyIn Stock: 50386ATSHA204A-SSHDA-T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ATSHA204-SH-DA-T is determined by strict alignment of the following critical parameters:

Electrical Compatibility Parameters:

• Series: CryptoAuthentication™ (same authentication protocol family)
• Type: Authentication Chip (identical functional classification)
• Applications: Networking and Communications (same application domain)

Mechanical Compatibility Parameters:

• Package / Case: 8-SOIC (0.154", 3.90mm Width) (identical footprint and pinout)
• Mounting Type: Surface Mount (identical assembly method)

Regulatory & Environmental Parameters:

• RoHS Status: ROHS3 Compliant (equivalent environmental compliance)
• Moisture Sensitivity Level: 1 (Unlimited) (identical handling requirements)
• REACH Status: REACH Unaffected (equivalent regulatory status)

The ATSHA204A-SSHDA-T meets all substitution criteria through identical parameter alignment across electrical, mechanical, and regulatory dimensions.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: ATSHA204A-SSHDA-T

The ATSHA204A-SSHDA-T is the direct equivalent substitute for the ATSHA204-SH-DA-T. Selection of this substitute is based on the following engineering factors:

1. Product Status Alignment: The ATSHA204A-SSHDA-T maintains active product status, ensuring continued manufacturer support, availability, and supply chain stability. The main part's obsolete status creates procurement risk and limits long-term viability.

2. Regulatory Compliance: Both parts maintain identical ROHS3 compliance and REACH unaffected status, confirming equivalent environmental and regulatory standing.

3. Mechanical Interchangeability: Identical 8-SOIC packaging and surface mount configuration ensure direct PCB footprint compatibility without design modification.

4. Functional Equivalence: Both components belong to the CryptoAuthentication™ series and serve identical authentication chip functions within networking and communications applications.

5. Supply Continuity: The substitute part demonstrates significantly higher inventory availability (50300 pcs vs. 5074 pcs), supporting sustained procurement and production schedules.

Frequently Asked Questions (FAQ)

Q: Can the ATSHA204A-SSHDA-T be used as a direct replacement for the ATSHA204-SH-DA-T without PCB redesign?

A: Yes. Both parts share identical 8-SOIC packaging dimensions (0.154", 3.90mm width) and surface mount configuration. No PCB layout modification is required for mechanical or electrical substitution.

Q: What is the primary reason for substituting the ATSHA204-SH-DA-T?

A: The main part carries obsolete product status, indicating discontinued manufacturer support and limited future availability. The ATSHA204A-SSHDA-T maintains active status with substantially higher inventory levels, ensuring supply chain continuity.

Q: Are there regulatory compliance differences between these parts?

A: No. Both parts maintain identical ROHS3 compliance, REACH unaffected status, and moisture sensitivity level (MSL 1 - Unlimited). Regulatory and environmental requirements are equivalent.

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

A: The ATSHA204A-SSHDA-T is available in Cut Tape (CT) and Digi-Reel® packaging formats, providing flexibility for different procurement and assembly workflows.

Q: Are both parts suitable for networking and communications applications?

A: Yes. Both the ATSHA204-SH-DA-T and ATSHA204A-SSHDA-T are specified for identical networking and communications applications within the CryptoAuthentication™ series.

Q: What is the moisture sensitivity handling requirement for these parts?

A: Both parts carry MSL 1 (Unlimited) classification, indicating no moisture sensitivity restrictions. Standard handling procedures apply without special moisture control requirements.