TPSMC47HE3_A/I Equivalent & Substitute Parts

Part Overview

The TPSMC47HE3_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-214AB (SMC) package and provides transient overvoltage protection with a 38.1V reverse standoff voltage and 67.8V maximum clamping voltage. The part is classified as Obsolete, making identification of active equivalent components essential for ongoing production and design continuity. Automotive-grade qualification (AEC-Q101) and ROHS3 compliance ensure suitability for regulated applications.

Substiute Parts

TPSMC47HE3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 795TPSMC47HE3_A/I Datasheet

Current PartRFQ

TPSMC47AHE3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1252TPSMC47AHE3_B/I Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TPSMC47HE3_A/I is determined by the following critical parameters:

Electrical Compatibility Criteria:

• Reverse Standoff Voltage (Typ): Must remain within the 38.1V to 40.2V range to maintain circuit protection thresholds
• Breakdown Voltage (Min): Must support minimum 42.3V threshold
• Clamping Voltage (Max) @ Ipp: Must not exceed 67.8V to prevent overstress on protected circuitry
• Peak Pulse Current (10/1000µs): Must meet or exceed 22.1A rating
• Peak Pulse Power: Must support 1500W dissipation capability

Mechanical & Environmental Compatibility:

• Package / Case: DO-214AB (SMC) surface mount only
• Operating Temperature Range: -65°C ~ 185°C (TJ)
• Grade: Automotive-grade components only
• Qualification: AEC-Q101 certified

Regulatory Compliance:

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: MSL 1 (Unlimited)

The substitute part TPSMC47AHE3_B/I meets all electrical, mechanical, and regulatory requirements while offering Active product status and improved inventory availability.

Parameter Comparison

Engineering Selection Recommendations

The TPSMC47AHE3_B/I is the qualified substitute for the obsolete TPSMC47HE3_A/I based on the following engineering criteria:

Product Status & Availability: The main part is classified as Obsolete, while the substitute maintains Active status with confirmed inventory of 1170 pieces. This ensures long-term supply chain continuity and reduces procurement risk.

Electrical Performance: The substitute demonstrates equivalent or superior electrical characteristics. The clamping voltage is reduced from 67.8V to 64.8V, providing enhanced protection margins. Peak pulse current increases from 22.1A to 23.1A, and breakdown voltage rises from 42.3V to 44.7V. These variations remain within acceptable substitution tolerances for TVS diode applications.

Compliance & Certification: Both components carry identical automotive-grade qualification (AEC-Q101) and ROHS3 compliance status, ensuring regulatory equivalence for automotive and industrial applications.

Package & Thermal Compatibility: Identical DO-214AB (SMC) surface mount packaging and -65°C to 185°C operating temperature range ensure direct mechanical and thermal interchangeability without PCB redesign.

Packaging Format: The substitute is supplied in Tape & Reel (TR) format, standard for high-volume production environments.

Frequently Asked Questions (FAQ)

Q: Can TPSMC47AHE3_B/I be used as a direct replacement for TPSMC47HE3_A/I?

A: Yes. Both components share identical package geometry (DO-214AB/SMC), thermal operating range (-65°C to 185°C), and automotive-grade certification (AEC-Q101). Electrical parameters fall within acceptable substitution tolerances for TVS diode applications.

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

A: The substitute exhibits a 2.1V higher reverse standoff voltage (40.2V vs. 38.1V), 2.4V higher breakdown voltage (44.7V vs. 42.3V), and 3V lower clamping voltage (64.8V vs. 67.8V). Peak pulse current increases by 1A (23.1A vs. 22.1A). These differences represent normal manufacturing variation within the PAR® series and do not affect functional compatibility.

Q: Are there any PCB layout or assembly changes required?

A: No. The identical DO-214AB (SMC) package eliminates the need for PCB redesign, footprint modification, or assembly process changes. Direct component substitution is possible without engineering revision.

Q: What is the significance of the product status change from Obsolete to Active?

A: Active status indicates ongoing manufacturer support, continued production, and assured long-term availability. This eliminates supply chain discontinuity risk associated with obsolete components and ensures access to current manufacturing batches with consistent quality.

Q: Are both parts suitable for automotive applications?

A: Yes. Both components carry Automotive grade classification and AEC-Q101 qualification, meeting automotive industry reliability and quality standards.

Q: What is the difference between the packaging formats (-A/I vs. -B/I)?

A: The -A/I variant uses standard packaging, while the -B/I variant is supplied in Tape & Reel (TR) format optimized for automated assembly and high-volume production. Electrical and mechanical specifications remain identical.