P6SMB47CAHM3_A/I Equivalent & Substitute Parts

Part Overview

The P6SMB47CAHM3_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 40.2V reverse standoff voltage and provides 64.8V clamping at peak pulse current, delivering 600W peak pulse power dissipation in a compact DO-214AA (SMB) package.

The P6SMB47CAHM3_A/I carries an Obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for systems utilizing this TVS diode specification.

Substiute Parts

P6SMB47CAHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1024P6SMB47CAHM3_A/I Datasheet

Current PartRFQ

P6SMB47CAHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 990P6SMB47CAHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P6SMB47CAHM3_A/I is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 40.2V
• Voltage - Breakdown (Min): 44.7V
• Voltage - Clamping (Max) @ Ipp: 64.8V
• Current - Peak Pulse (10/1000µs): 9.3A
• Power - Peak Pulse: 600W
• Bidirectional 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 P6SMB47CAHM3_B/I qualifies as a direct manufacturer-recommended substitute. Both parts share identical electrical specifications, thermal operating range, automotive qualification, and package configuration. The primary distinction is product status: the substitute part is Active, whereas the original part is Obsolete.

Parameter Comparison

Engineering Selection Recommendations

The P6SMB47CAHM3_B/I is the manufacturer-recommended substitute for the obsolete P6SMB47CAHM3_A/I. Both parts maintain identical electrical performance specifications, thermal operating range, and automotive-grade qualification (AEC-Q101). The substitute part carries Active product status, ensuring ongoing availability and manufacturing support.

Selection of the P6SMB47CAHM3_B/I provides design continuity without modification to circuit protection requirements or PCB layout. Both parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement.

The packaging difference—Tape & Reel (TR) for the substitute versus bulk for the original—reflects standard manufacturing practices for active products and does not affect electrical or mechanical compatibility in surface mount applications.

Frequently Asked Questions (FAQ)

Q: Can the P6SMB47CAHM3_B/I be used as a direct replacement for the P6SMB47CAHM3_A/I?

A: Yes. Both parts are electrically and mechanically identical across all critical parameters: reverse standoff voltage, breakdown voltage, clamping voltage, peak pulse current, power dissipation, package type, and operating temperature range. The substitute part is manufacturer-recommended and carries Active product status.

Q: What is the difference between the two part numbers?

A: The primary difference is product status. The P6SMB47CAHM3_A/I is Obsolete, while the P6SMB47CAHM3_B/I is Active. The substitute part is supplied in Tape & Reel packaging, which is standard for active production items. Electrical specifications and performance are identical.

Q: Are there any compatibility concerns with PCB assembly?

A: No. Both parts use the identical DO-214AA (SMB) surface mount package. PCB footprints, reflow profiles, and assembly processes remain unchanged. The Tape & Reel packaging of the substitute part is compatible with standard pick-and-place assembly equipment.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both the P6SMB47CAHM3_A/I and P6SMB47CAHM3_B/I carry Automotive grade classification and AEC-Q101 qualification. Both are ROHS3 compliant and REACH unaffected.

Q: Why should I transition from the obsolete part to the active substitute?

A: The obsolete status of the P6SMB47CAHM3_A/I indicates that Vishay has discontinued manufacturing. Transitioning to the P6SMB47CAHM3_B/I ensures long-term supply chain reliability, access to current manufacturing batches, and continued support from the manufacturer.