P6SMB43AHE3_A/I Equivalent & Substitute Parts

Part Overview

The P6SMB43AHE3_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-214AA (SMB) package and provides transient overvoltage protection with a 36.8V reverse standoff voltage and 59.3V maximum clamping voltage. The part is currently classified as obsolete, making identification of suitable substitutes essential for ongoing design support and production continuity.

Substiute Parts

P6SMB43AHE3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 799P6SMB43AHE3_A/I Datasheet

Current PartRFQ

P6SMB43AHE3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 890P6SMB43AHE3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the P6SMB43AHE3_A/I is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 36.8V
• Voltage - Breakdown (Min): 40.9V
• Voltage - Clamping (Max) @ Ipp: 59.3V
• Current - Peak Pulse (10/1000µs): 10.1A
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA, SMB
• Unidirectional Channels: 1
• Operating Temperature Range: -65°C ~ 150°C (TJ)
• Grade: Automotive
• Qualification: AEC-Q101

The P6SMB43AHE3_B/I qualifies as a direct substitute based on identical electrical specifications and mechanical compatibility. The primary distinction is product status and packaging configuration.

Parameter Comparison

Engineering Selection Recommendations

The P6SMB43AHE3_B/I is the direct substitute for the obsolete P6SMB43AHE3_A/I. Both parts maintain identical electrical and thermal specifications, automotive-grade qualification, and AEC-Q101 certification. The P6SMB43AHE3_B/I is currently in active production status, ensuring long-term availability and supply chain continuity.

The transition from the A/I variant to the B/I variant involves only packaging configuration differences. The B/I variant is supplied in Tape & Reel format, which is standard for high-volume manufacturing and automated assembly processes. No circuit-level modifications or design changes are required for this substitution.

Frequently Asked Questions (FAQ)

Q: Can the P6SMB43AHE3_B/I be used as a direct replacement for the P6SMB43AHE3_A/I?

A: Yes. Both parts are electrically and mechanically identical. The P6SMB43AHE3_B/I is the active production equivalent and is fully compatible with designs originally specified for the A/I variant.

Q: What is the difference between the A/I and B/I packaging variants?

A: The primary difference is the packaging configuration. The A/I variant is supplied in bulk packaging, while the B/I variant is supplied in Tape & Reel (TR) format. Both use the same DO-214AA (SMB) component package. Tape & Reel packaging is optimized for automated pick-and-place assembly.

Q: Are there any thermal or electrical performance differences between these parts?

A: No. Both variants operate across the same temperature range (-65°C ~ 150°C), maintain identical voltage specifications (36.8V standoff, 59.3V clamping), and deliver the same peak pulse current (10.1A) and power dissipation (600W).

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both the P6SMB43AHE3_A/I and P6SMB43AHE3_B/I are automotive-grade components with AEC-Q101 qualification and ROHS3 compliance.

Q: Why is the A/I variant listed as obsolete?

A: The A/I variant has been superseded by the B/I variant in the manufacturer's product line. The B/I variant is the current production part and is recommended for all new designs and ongoing production requirements.