P6SMB22AHM3_A/I Equivalent & Substitute Parts

Part Overview

The P6SMB22AHM3_A/I is a unidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, designed for telecom applications requiring transient protection. This component features a 18.8V reverse standoff voltage with 30.6V maximum clamping voltage and 19.6A peak pulse current capability in a surface mount DO-214AA (SMB) package. The part is classified as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure supply chain availability.

Substiute Parts

P6SMB22AHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1137P6SMB22AHM3_A/I Datasheet

Current PartRFQ

P6SMB22AHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1231P6SMB22AHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P6SMB22AHM3_A/I is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 18.8V
• Voltage - Breakdown (Min): 20.9V
• Voltage - Clamping (Max) @ Ipp: 30.6V
• Current - Peak Pulse (10/1000µs): 19.6A
• Power - Peak Pulse: 600W
• Unidirectional Channels: 1
• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount
• Operating Temperature Range: -65°C ~ 150°C (TJ)
• Grade: Automotive
• Qualification: AEC-Q101

The substitute part P6SMB22AHM3_B/I maintains identical electrical and mechanical specifications while offering active product status and improved supply availability. Both parts belong to the same P6SMB TransZorb® series and are manufactured by Vishay General Semiconductor - Diodes Division.

Parameter Comparison

Engineering Selection Recommendations

The P6SMB22AHM3_B/I is the direct equivalent substitute for the obsolete P6SMB22AHM3_A/I. Both components are manufactured by Vishay General Semiconductor - Diodes Division and maintain identical electrical performance specifications across all critical parameters including voltage ratings, current handling, and power dissipation.

The primary distinction is product status: P6SMB22AHM3_A/I is obsolete, while P6SMB22AHM3_B/I maintains active status with confirmed inventory availability. Both parts carry automotive-grade qualification (AEC-Q101) and ROHS3 compliance, ensuring suitability for regulated applications.

The packaging difference (bulk versus Tape & Reel) does not affect electrical or mechanical compatibility and represents a supply chain variation only.

Frequently Asked Questions (FAQ)

Q: Are P6SMB22AHM3_A/I and P6SMB22AHM3_B/I electrically identical?

A: Yes. Both components share identical electrical specifications: 18.8V reverse standoff voltage, 20.9V minimum breakdown voltage, 30.6V maximum clamping voltage, 19.6A peak pulse current, and 600W peak pulse power rating.

Q: Can P6SMB22AHM3_B/I be used as a direct replacement on existing PCBs?

A: Yes. Both parts use the same DO-214AA (SMB) surface mount package and have identical pinout and footprint requirements. No PCB modifications are necessary.

Q: What is the difference between the packaging options?

A: P6SMB22AHM3_A/I is supplied in bulk packaging, while P6SMB22AHM3_B/I is supplied in Tape & Reel (TR) format. This affects handling and assembly processes but does not impact component performance or compatibility.

Q: Are both parts suitable for automotive applications?

A: Yes. Both P6SMB22AHM3_A/I and P6SMB22AHM3_B/I carry automotive-grade classification and AEC-Q101 qualification, meeting automotive industry reliability and quality standards.

Q: Why is P6SMB22AHM3_A/I listed as obsolete?

A: Product obsolescence reflects manufacturer discontinuation decisions. P6SMB22AHM3_B/I remains in active production and is the recommended source for new designs and replenishment orders.