P6SMB43CAHM3_A/I Equivalent & Substitute Parts

Part Overview

The P6SMB43CAHM3_A/I is a bidirectional transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component is designed for telecom applications requiring transient overvoltage protection in surface mount configurations. The part operates with a 36.8V reverse standoff voltage and provides 59.3V clamping at peak pulse current, delivering 600W peak pulse power dissipation in a compact DO-214AA (SMB) package.

The P6SMB43CAHM3_A/I carries an Obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications currently utilizing this component.

Substiute Parts

P6SMB43CAHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1007P6SMB43CAHM3_A/I Datasheet

Current PartRFQ

P6SMB43CAHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 839P6SMB43CAHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the P6SMB43CAHM3_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
• Bidirectional Channels: 1
• Type: Zener
• Operating Temperature Range: -65°C ~ 150°C (TJ)
• Grade: Automotive
• Qualification: AEC-Q101

The P6SMB43CAHM3_B/I is identified as the manufacturer-recommended substitute. This part maintains identical electrical specifications and mechanical compatibility while differing only in packaging format (Tape & Reel versus bulk) and product status (Active versus Obsolete).

Parameter Comparison

Engineering Selection Recommendations

The P6SMB43CAHM3_B/I is the direct substitute for the obsolete P6SMB43CAHM3_A/I. Both parts are manufactured by Vishay and maintain identical electrical and thermal specifications. The substitute part carries Active product status, ensuring continued availability and manufacturer support.

Both parts satisfy automotive-grade requirements with AEC-Q101 qualification and ROHS3 compliance. The primary distinction is packaging format: the substitute is supplied in Tape & Reel configuration, which is standard for high-volume production environments. The electrical performance, thermal operating range, and mechanical compatibility remain unchanged.

Selection of the P6SMB43CAHM3_B/I eliminates obsolescence risk while preserving full design compatibility with existing circuit implementations.

Frequently Asked Questions (FAQ)

Q: Can the P6SMB43CAHM3_B/I be used as a direct replacement for the P6SMB43CAHM3_A/I?

A: Yes. Both parts are electrically and mechanically identical. The substitute maintains the same voltage ratings (36.8V standoff, 59.3V clamping), peak pulse current (10.1A), power dissipation (600W), operating temperature range (-65°C to 150°C), and DO-214AA package configuration. The only difference is packaging format and product status.

Q: What is the significance of the packaging difference between these parts?

A: The P6SMB43CAHM3_A/I is supplied in bulk packaging, while the P6SMB43CAHM3_B/I is supplied in Tape & Reel (TR) format. Tape & Reel packaging is optimized for automated assembly processes and high-volume production. Both formats contain identical components with identical performance characteristics.

Q: Are both parts suitable for automotive applications?

A: Yes. Both the P6SMB43CAHM3_A/I and P6SMB43CAHM3_B/I carry Automotive grade classification and AEC-Q101 qualification, confirming suitability for automotive-grade circuit protection applications.

Q: Why is the original part marked as Obsolete?

A: The P6SMB43CAHM3_A/I has reached end-of-life status. The P6SMB43CAHM3_B/I remains in active production and is the recommended path forward for new designs and ongoing production support.

Q: Do these parts require any design modifications when substituting?

A: No design modifications are required. The substitute part maintains identical pinout, package dimensions, electrical specifications, and thermal characteristics. PCB layout and circuit design remain unchanged.