SMBJ8.0AHE3_A/I Equivalent & Substitute Parts

Part Overview

The SMBJ8.0AHE3_A/I is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component is designed for surface mount applications in the DO-214AA (SMB) package and provides transient overvoltage protection with an 8V reverse standoff voltage and 13.6V maximum clamping voltage at peak pulse current.

The SMBJ8.0AHE3_A/I carries an Obsolete product status. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production requirements for applications utilizing this TVS diode specification.

Substiute Parts

SMBJ8.0AHE3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1183SMBJ8.0AHE3_A/I Datasheet

Current PartRFQ

SMBJ8.0AHE3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1064SMBJ8.0AHE3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBJ8.0AHE3_A/I is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 8V
• Voltage - Breakdown (Min): 8.89V
• Voltage - Clamping (Max) @ Ipp: 13.6V
• Current - Peak Pulse (10/1000µs): 44.1A
• 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 SMBJ8.0AHE3_B/I is classified as a manufacturer-recommended substitute. This part maintains identical electrical specifications, thermal performance, package configuration, and automotive qualification requirements as the original SMBJ8.0AHE3_A/I. The primary distinction is product status: the substitute part is Active, whereas the original part is Obsolete.

Parameter Comparison

Engineering Selection Recommendations

The SMBJ8.0AHE3_B/I is the designated manufacturer substitute for the obsolete SMBJ8.0AHE3_A/I. Both parts are manufactured by Vishay General Semiconductor - Diodes Division and share identical electrical, thermal, and mechanical specifications. Both components maintain Automotive grade classification and AEC-Q101 qualification, ensuring compliance with automotive industry standards.

The SMBJ8.0AHE3_B/I is currently in Active production status, providing assured long-term availability and supply chain continuity. Both parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

For new designs or production transitions, the SMBJ8.0AHE3_B/I is the appropriate selection. For existing designs currently utilizing the SMBJ8.0AHE3_A/I, direct substitution with the SMBJ8.0AHE3_B/I is supported without circuit modification or re-qualification.

Frequently Asked Questions (FAQ)

Q: Can the SMBJ8.0AHE3_B/I be used as a direct replacement for the SMBJ8.0AHE3_A/I?

A: Yes. Both parts are identical in electrical performance, thermal characteristics, package configuration, and automotive qualification. The SMBJ8.0AHE3_B/I is the manufacturer-recommended substitute and requires no circuit changes or design modifications.

Q: What is the difference between the SMBJ8.0AHE3_A/I and SMBJ8.0AHE3_B/I?

A: The parts are electrically and mechanically equivalent. The primary difference is product status: the SMBJ8.0AHE3_A/I is Obsolete, while the SMBJ8.0AHE3_B/I is Active in production. The suffix designation (_A/I versus _B/I) indicates the production variant.

Q: Are both parts suitable for automotive applications?

A: Yes. Both the SMBJ8.0AHE3_A/I and SMBJ8.0AHE3_B/I carry Automotive grade classification and AEC-Q101 qualification, meeting automotive industry reliability and quality standards.

Q: What are the critical electrical parameters for substitution?

A: Substitution is based on matching: 8V reverse standoff voltage, 8.89V minimum breakdown voltage, 13.6V maximum clamping voltage, 44.1A peak pulse current, and 600W peak pulse power rating. Both parts meet these specifications identically.

Q: Is the DO-214AA (SMB) package identical for both parts?

A: Yes. Both parts use the DO-214AA (SMB) surface mount package with identical pin configuration, footprint, and mounting requirements. No PCB layout changes are necessary.

Q: What is the operating temperature range for these TVS diodes?

A: Both parts operate across -55°C to 150°C junction temperature (TJ), providing performance across extended industrial and automotive temperature ranges.

Q: Are there any compliance or regulatory differences between the two parts?

A: No. Both parts are ROHS3 compliant and REACH unaffected. Environmental and regulatory compliance is identical.