P6SMB18AHM3_A/I Equivalent & Substitute Parts

Part Overview

The P6SMB18AHM3_A/I is a unidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, designed for telecom applications. This component features a 15.3V reverse standoff voltage with 25.2V maximum clamping voltage and 23.8A peak pulse current capability in a surface mount DO-214AA (SMB) package. The part is classified as obsolete, making identification of active equivalent substitutes essential for ongoing design support and procurement.

Substiute Parts

P6SMB18AHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1073P6SMB18AHM3_A/I Datasheet

Current PartRFQ

P6SMB18AHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1174P6SMB18AHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P6SMB18AHM3_A/I is determined by strict equivalence across the following electrical and mechanical parameters:

• Voltage Rating: Reverse standoff voltage of 15.3V (Typ), breakdown voltage minimum of 17.1V, and clamping voltage maximum of 25.2V @ Ipp
• Current Handling: Peak pulse current of 23.8A at 10/1000µs pulse width
• Power Dissipation: 600W peak pulse power rating
• Package: DO-214AA (SMB) surface mount package
• Unidirectional Configuration: Single channel zener TVS diode
• Compliance: AEC-Q101 automotive qualification, ROHS3 compliance, and operating temperature range of -65°C to 150°C (TJ)

The substitute part P6SMB18AHM3_B/I maintains identical electrical specifications and package configuration while differing only in product status (Active vs. Obsolete) and packaging format (Tape & Reel vs. standard packaging).

Parameter Comparison

Engineering Selection Recommendations

The P6SMB18AHM3_B/I is the direct functional equivalent of the P6SMB18AHM3_A/I. Both parts share identical electrical specifications, package configuration, and automotive-grade certifications. The primary distinction is product lifecycle status: the A/I variant is obsolete while the B/I variant maintains active production status.

For new designs or ongoing procurement, the P6SMB18AHM3_B/I is the appropriate selection. This part maintains full AEC-Q101 automotive qualification and ROHS3 compliance, ensuring continuity of performance and regulatory requirements. The Tape & Reel packaging format of the B/I variant is standard for high-volume manufacturing and automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can P6SMB18AHM3_B/I be used as a direct replacement for P6SMB18AHM3_A/I?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters. The B/I variant is the active production equivalent of the obsolete A/I variant.

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

A: No. Both parts maintain identical voltage ratings (15.3V reverse standoff, 25.2V clamping), current handling (23.8A peak pulse), and power dissipation (600W).

Q: What is the significance of the packaging format difference?

A: The P6SMB18AHM3_A/I uses standard packaging while the P6SMB18AHM3_B/I is supplied in Tape & Reel format. Tape & Reel is the standard format for automated surface mount assembly and high-volume production. Both formats contain the same component in the DO-214AA (SMB) package.

Q: Are both parts qualified for automotive applications?

A: Yes. Both parts carry AEC-Q101 automotive qualification and are suitable for automotive telecom applications requiring transient voltage suppression.

Q: What compliance certifications apply to these parts?

A: Both parts are ROHS3 compliant and REACH unaffected. Both maintain automotive-grade classification with AEC-Q101 qualification.