P6SMB220AHM3_A/I Equivalent & Substitute Parts

Part Overview

The P6SMB220AHM3_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 185V reverse standoff voltage with 328V maximum clamping voltage and 1.8A peak pulse current capability in a surface mount DO-214AA (SMB) package. The part is currently listed as obsolete, making identification of compatible substitutes essential for ongoing system support and procurement.

Substiute Parts

P6SMB220AHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 817P6SMB220AHM3_A/I Datasheet

Current PartRFQ

P6SMB220AHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 978P6SMB220AHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P6SMB220AHM3_A/I is determined by strict equivalence across the following critical parameters:

• Voltage Rating: Reverse standoff voltage of 185V, breakdown minimum of 209V, and clamping maximum of 328V must remain identical
• Current Handling: Peak pulse current of 1.8A (10/1000µs pulse) must be maintained
• Power Dissipation: Peak pulse power rating of 600W must be preserved
• Package Configuration: Surface mount DO-214AA (SMB) package is mandatory for PCB compatibility
• Electrical Type: Unidirectional zener TVS diode with single channel configuration
• Compliance: AEC-Q101 automotive qualification and ROHS3 compliance required
• Temperature Range: Operating range of -65°C to 150°C (TJ) must be supported

The P6SMB220AHM3_B/I meets all these criteria as a direct substitute, with the primary distinction being product status (active versus obsolete) and packaging format (Tape & Reel versus bulk).

Parameter Comparison

Engineering Selection Recommendations

The P6SMB220AHM3_B/I is the direct functional equivalent of the P6SMB220AHM3_A/I. Both components share identical electrical specifications, thermal characteristics, and compliance certifications (AEC-Q101, ROHS3). The primary distinction is product lifecycle status: the P6SMB220AHM3_A/I is obsolete, while the P6SMB220AHM3_B/I maintains active production status.

For new designs or system refreshes, the P6SMB220AHM3_B/I is the appropriate selection due to its active availability and standard Tape & Reel packaging format, which aligns with modern manufacturing processes. For legacy system maintenance where the original packaging format (bulk) is required, the P6SMB220AHM3_A/I remains available in limited inventory (797 pcs), though long-term procurement should transition to the active substitute.

Both parts maintain automotive-grade qualification and are suitable for telecom transient protection applications without modification to circuit design or PCB layout.

Frequently Asked Questions (FAQ)

Q: Can the P6SMB220AHM3_B/I be used as a direct replacement for the P6SMB220AHM3_A/I?

A: Yes. Both parts are electrically and mechanically identical across all critical parameters: voltage ratings (185V standoff, 328V clamping), current handling (1.8A peak pulse), power dissipation (600W), package type (DO-214AA SMB), and compliance certifications (AEC-Q101, ROHS3). The only differences are product status and packaging format.

Q: What is the difference between the packaging formats?

A: The P6SMB220AHM3_A/I is supplied in bulk packaging, while the P6SMB220AHM3_B/I is supplied in Tape & Reel (TR) format. Tape & Reel is the standard for automated assembly processes. Bulk packaging may be available through special order but is not the standard production format for active parts.

Q: Why is the P6SMB220AHM3_A/I listed as obsolete?

A: Product obsolescence reflects Vishay's lifecycle management. The P6SMB220AHM3_B/I serves as the active production equivalent and is the recommended choice for ongoing procurement and new designs.

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

A: No. Both parts operate across the identical temperature range (-65°C to 150°C TJ) and deliver the same electrical performance. They are functionally interchangeable.

Q: Can these parts be used interchangeably on the same PCB?

A: Yes. Both parts use the DO-214AA (SMB) surface mount package with identical pinout and footprint. No PCB layout modifications are required when substituting between these parts.