TPSMA6.8HE3_A/I Equivalent & Substitute Parts

Part Overview

The TPSMA6.8HE3_A/I is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component is designed for surface mount applications in the DO-214AC (SMA) package and provides transient voltage protection with a 5.5V reverse standoff voltage and 10.8V maximum clamping voltage at peak pulse current.

The TPSMA6.8HE3_A/I is classified as Obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this component.

Substiute Parts

TPSMA6.8HE3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 687TPSMA6.8HE3_A/I Datasheet

Current PartRFQ

TPSMA6.8AHE3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1201TPSMA6.8AHE3_B/I Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TPSMA6.8HE3_A/I is determined by the following critical parameters:

• Package Compatibility: Both parts must use DO-214AC (SMA) surface mount package
• Electrical Classification: Both must be unidirectional Zener-type TVS diodes with single channel configuration
• Voltage Parameters: Reverse standoff voltage, breakdown voltage, and clamping voltage must fall within acceptable operating ranges for the target application
• Current Rating: Peak pulse current capability must meet or exceed application requirements
• Thermal Performance: Operating temperature range must support the intended environment
• Compliance & Certification: Automotive grade with AEC-Q101 qualification ensures reliability in automotive applications
• Environmental Standards: RoHS3 compliance and REACH status must be maintained

The TPSMA6.8AHE3_B/I qualifies as a direct substitute based on matching package type, electrical classification, thermal range, and compliance certifications while maintaining compatible voltage and current parameters within acceptable tolerance.

Parameter Comparison

Engineering Selection Recommendations

The TPSMA6.8AHE3_B/I is qualified as a direct substitute for the TPSMA6.8HE3_A/I based on the following factors:

Compliance & Certification Alignment: Both components maintain Automotive grade classification with AEC-Q101 qualification, ensuring equivalent reliability standards for automotive applications. Both are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Product Status Consideration: The TPSMA6.8HE3_A/I is classified as Obsolete, while the TPSMA6.8AHE3_B/I maintains Active status. This transition from obsolete to active inventory status supports long-term supply chain continuity and reduces procurement risk.

Electrical Parameter Compatibility: The substitute part demonstrates compatible electrical characteristics within the same product family (PAR® series, base product TPSMA6.8). Voltage parameters show minor variations (reverse standoff 5.8V vs. 5.5V, clamping voltage 10.5V vs. 10.8V) that remain within acceptable operating margins for TVS diode applications. Peak pulse current capability is equivalent or superior (38.1A vs. 37A).

Package & Thermal Equivalence: Identical DO-214AC (SMA) surface mount package and matching -65°C to 185°C operating temperature range ensure mechanical and thermal compatibility without design modification.

Frequently Asked Questions (FAQ)

Q: Can the TPSMA6.8AHE3_B/I be used as a direct replacement for the TPSMA6.8HE3_A/I without circuit modification?

A: Yes. Both components share identical package type (DO-214AC/SMA), thermal operating range, and compliance certifications. Electrical parameters are compatible within acceptable TVS diode operating margins. No circuit modification is required.

Q: What are the key differences between these two parts?

A: The primary differences are product status (Obsolete vs. Active) and minor voltage parameter variations. The TPSMA6.8AHE3_B/I has a slightly higher reverse standoff voltage (5.8V vs. 5.5V) and marginally lower clamping voltage (10.5V vs. 10.8V), with equivalent peak pulse current capability. These variations are within normal TVS diode tolerance ranges.

Q: Why is the reverse standoff voltage different between the two parts?

A: Both parts belong to the same PAR® series with base product number TPSMA6.8, but represent different manufacturing revisions or binning specifications. The voltage variations reflect normal component tolerance and manufacturing process evolution while maintaining functional equivalence for transient voltage suppression applications.

Q: Are both parts suitable for automotive applications?

A: Yes. Both components carry Automotive grade classification and AEC-Q101 qualification, confirming suitability for automotive transient voltage suppression applications.

Q: What is the significance of the packaging difference (Tape & Reel for the substitute)?

A: The TPSMA6.8AHE3_B/I is supplied in Tape & Reel (TR) packaging, which is standard for high-volume surface mount assembly. This does not affect electrical or mechanical compatibility; it reflects modern manufacturing and assembly practices. The component itself remains identical in the DO-214AC (SMA) package format.

Q: Is the TPSMA6.8AHE3_B/I available in sufficient inventory?

A: The TPSMA6.8AHE3_B/I is listed as Active with 1101 pieces in new original stock, providing reliable supply availability compared to the Obsolete status of the original part.