SMBJ30AHE3_A/I Equivalent & Substitute Parts

Part Overview

The SMBJ30AHE3_A/I is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, part of the TransZorb® series. This component is designed for surface mount applications in the DO-214AA (SMB) package and provides transient voltage protection with a 30V reverse standoff voltage and 48.4V maximum clamping voltage.

The SMBJ30AHE3_A/I is currently listed as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this component.

Substiute Parts

SMBJ30AHE3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 802SMBJ30AHE3_A/I Datasheet

Current PartRFQ

SMBJ30AHE3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1103SMBJ30AHE3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBJ30AHE3_A/I is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 30V
• Voltage - Breakdown (Min): 33.3V
• Voltage - Clamping (Max) @ Ipp: 48.4V
• Current - Peak Pulse (10/1000µs): 12.4A
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount
• Operating Temperature Range: -55°C to 150°C (TJ)
• Grade: Automotive
• Qualification: AEC-Q101
• RoHS Status: ROHS3 Compliant

The SMBJ30AHE3_B/I is identified as a manufacturer-recommended substitute. This part maintains identical electrical specifications and environmental ratings while differing only in packaging format (Tape & Reel) and product status (Active vs. Obsolete).

Parameter Comparison

Engineering Selection Recommendations

The SMBJ30AHE3_B/I is the direct substitute for the obsolete SMBJ30AHE3_A/I. Both parts are manufactured by Vishay and maintain identical electrical and thermal specifications. The substitute part carries Active product status, ensuring continued availability and supply chain support.

Both parts meet automotive-grade requirements with AEC-Q101 qualification and ROHS3 compliance, making them suitable for regulated applications. The primary distinction is packaging format: the substitute is supplied in Tape & Reel configuration, which is standard for high-volume production environments.

No electrical or thermal derating is required when transitioning from the main part to the substitute. PCB layout, thermal management, and circuit design parameters remain unchanged.

Frequently Asked Questions (FAQ)

Q: Can SMBJ30AHE3_B/I be used as a direct replacement for SMBJ30AHE3_A/I?

A: Yes. Both parts are electrically and thermally identical, with matching voltage ratings (30V standoff, 48.4V clamping), current handling (12.4A peak pulse), and power dissipation (600W). Both are qualified to AEC-Q101 and ROHS3 compliant.

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

A: The primary difference is product status and packaging format. SMBJ30AHE3_A/I is obsolete and supplied in standard packaging, while SMBJ30AHE3_B/I is active and supplied in Tape & Reel format. Electrical specifications are identical.

Q: Are there any PCB layout or thermal considerations when substituting?

A: No. Both parts use the identical DO-214AA (SMB) surface mount package. PCB footprint, thermal vias, and layout design remain unchanged.

Q: Is the Tape & Reel packaging compatible with standard pick-and-place equipment?

A: Yes. Tape & Reel packaging is the standard format for automated assembly equipment and is compatible with all modern surface mount production lines.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both SMBJ30AHE3_A/I and SMBJ30AHE3_B/I carry Automotive grade classification and AEC-Q101 qualification, meeting automotive industry standards.

Q: What is the operating temperature range for both parts?

A: Both parts operate across -55°C to 150°C (junction temperature), providing full coverage for automotive and industrial applications.