SMBJ17AHE3_A/I Equivalent & Substitute Parts

Part Overview

The SMBJ17AHE3_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 17V reverse standoff voltage and 27.6V maximum clamping voltage at peak pulse current of 21.7A. The part is classified as obsolete, making identification of active equivalent alternatives essential for ongoing design support and procurement.

Substiute Parts

SMBJ17AHE3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1055SMBJ17AHE3_A/I Datasheet

Current PartRFQ

SMBJ17AHE3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 838SMBJ17AHE3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBJ17AHE3_A/I is determined by strict equivalence across the following electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): 17V
• Voltage - Breakdown (Min): 18.9V
• Voltage - Clamping (Max) @ Ipp: 27.6V
• Current - Peak Pulse (10/1000µs): 21.7A
• Power - Peak Pulse: 600W
• Unidirectional Channels: 1
• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount
• Operating Temperature Range: -55°C ~ 150°C (TJ)
• Grade: Automotive
• Qualification: AEC-Q101

The SMBJ17AHE3_B/I is the manufacturer-recommended substitute, maintaining identical electrical specifications and automotive-grade qualification while offering active product status and standard tape & reel packaging.

Parameter Comparison

Engineering Selection Recommendations

The SMBJ17AHE3_B/I is the direct equivalent for the obsolete SMBJ17AHE3_A/I. Both components share identical electrical characteristics, automotive-grade qualification (AEC-Q101), and surface mount DO-214AA package specifications. The primary distinction is product status: the SMBJ17AHE3_B/I maintains active production status with standard tape & reel packaging, ensuring long-term availability and supply chain continuity. Both parts maintain ROHS3 compliance and are suitable for automotive applications requiring transient voltage suppression at 17V standoff voltage with 600W peak pulse power handling.

Frequently Asked Questions (FAQ)

Q: Can SMBJ17AHE3_B/I be used as a direct replacement for SMBJ17AHE3_A/I?

A: Yes. Both parts are electrically identical with matching voltage ratings (17V standoff, 27.6V clamping), current handling (21.7A peak pulse), power dissipation (600W), and automotive qualification (AEC-Q101). The DO-214AA (SMB) package and surface mount configuration are identical.

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

A: The SMBJ17AHE3_A/I is classified as obsolete, while SMBJ17AHE3_B/I is active production. The packaging format differs: SMBJ17AHE3_A/I is supplied in bulk, while SMBJ17AHE3_B/I is supplied in tape & reel format. Electrical specifications and performance are equivalent.

Q: Are there any compatibility concerns when substituting these parts?

A: No compatibility concerns exist. Both parts use the identical DO-214AA (SMB) surface mount package with the same pinout and footprint. PCB layout and assembly processes require no modification.

Q: Does the tape & reel packaging of SMBJ17AHE3_B/I affect performance?

A: No. Tape & reel packaging is a supply and handling format only. It does not affect electrical performance, reliability, or functional characteristics of the component.

Q: Are both parts suitable for automotive applications?

A: Yes. Both SMBJ17AHE3_A/I and SMBJ17AHE3_B/I carry automotive-grade classification with AEC-Q101 qualification, meeting automotive industry standards for reliability and performance.