SMBJ9.0AHE3_A/I Equivalent & Substitute Parts

Part Overview

The SMBJ9.0AHE3_A/I is a unidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, designed for surface mount applications in the DO-214AA (SMB) package. This component provides transient overvoltage protection with a 9V reverse standoff voltage and 15.4V maximum clamping voltage at peak pulse current. The part is currently classified as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure supply chain availability for new production and field replacements.

Substiute Parts

SMBJ9.0AHE3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 847SMBJ9.0AHE3_A/I Datasheet

Current PartRFQ

SMBJ9.0AHE3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 775SMBJ9.0AHE3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBJ9.0AHE3_A/I is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff: 9V (±tolerance)
• Voltage - Breakdown (Min): 10V
• Voltage - Clamping (Max) @ Ipp: 15.4V
• Current - Peak Pulse (10/1000µs): 39A
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA, SMB
• Unidirectional Channels: 1
• Type: Zener
• Operating Temperature Range: -55°C ~ 150°C (TJ)
• Grade: Automotive
• Qualification: AEC-Q101

The SMBJ9.0AHE3_B/I meets all these criteria and is classified as an active product, making it a direct functional equivalent suitable for replacement in applications currently using the obsolete SMBJ9.0AHE3_A/I.

Parameter Comparison

Engineering Selection Recommendations

The SMBJ9.0AHE3_B/I is the direct equivalent for the obsolete SMBJ9.0AHE3_A/I. Both parts are manufactured by Vishay General Semiconductor - Diodes Division and share identical electrical specifications, thermal operating range, and automotive-grade qualification (AEC-Q101). The primary distinction is product status: the SMBJ9.0AHE3_A/I is obsolete, while the SMBJ9.0AHE3_B/I maintains active production status.

The SMBJ9.0AHE3_B/I is supplied in Tape & Reel (TR) packaging, which is standard for high-volume manufacturing and automated assembly. Both parts maintain ROHS3 compliance and are suitable for automotive applications requiring transient voltage suppression at 9V standoff voltage with 600W peak pulse power handling.

Frequently Asked Questions (FAQ)

Q: Can the SMBJ9.0AHE3_B/I be used as a direct replacement for the SMBJ9.0AHE3_A/I?

A: Yes. Both parts are electrically and mechanically identical across all critical parameters: 9V reverse standoff voltage, 15.4V clamping voltage, 39A peak pulse current, 600W power dissipation, DO-214AA (SMB) package, and AEC-Q101 automotive qualification. The SMBJ9.0AHE3_B/I is the active production equivalent.

Q: What is the difference between the SMBJ9.0AHE3_A/I and SMBJ9.0AHE3_B/I?

A: The primary difference is product status. The SMBJ9.0AHE3_A/I is classified as obsolete, while the SMBJ9.0AHE3_B/I is active. Additionally, the SMBJ9.0AHE3_B/I is supplied in Tape & Reel packaging, whereas the SMBJ9.0AHE3_A/I was supplied in bulk packaging.

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

A: No. Both parts have identical electrical specifications: 9V reverse standoff voltage, 10V minimum breakdown voltage, 15.4V maximum clamping voltage at peak pulse current, 39A peak pulse current (10/1000µs), and 600W peak pulse power rating.

Q: Is the SMBJ9.0AHE3_B/I suitable for automotive applications?

A: Yes. The SMBJ9.0AHE3_B/I carries automotive-grade classification and AEC-Q101 qualification, making it suitable for automotive transient voltage suppression applications.

Q: What is the operating temperature range for the SMBJ9.0AHE3_B/I?

A: The operating temperature range is -55°C to 150°C (junction temperature), identical to the SMBJ9.0AHE3_A/I.

Q: Does the packaging change affect PCB assembly?

A: The SMBJ9.0AHE3_B/I is supplied in Tape & Reel (TR) format, which is standard for automated pick-and-place assembly. The physical package remains DO-214AA (SMB), so PCB footprints and land patterns are unchanged.