SMBJE8-0AH Equivalent & Substitute Parts

Part Overview

The SMBJE8-0AH is an active Transient Voltage Suppressor (TVS) diode manufactured by Eaton - Electronics Division. This unidirectional zener diode is designed for surface mount applications in the DO-214AA (SMB) package and operates across an industrial temperature range of -55°C to 150°C. The device is qualified to AEC-Q101 automotive standards and carries REACH Unaffected status. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design flexibility is required within specified electrical and mechanical parameters.

Substiute Parts

SMBJE8-0AH

Eaton - Electronics DivisionIn Stock: 760SMBJE8-0AH Datasheet

Current PartRFQ

SM6T10AY

STMicroelectronicsIn Stock: 3405SM6T10AY Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBJE8-0AH is determined by the following critical parameters:

Electrical Compatibility Criteria:

• Voltage - Reverse Standoff (Typ): Must be within 8V nominal range
• Voltage - Breakdown (Min): Must support minimum 8.89V threshold
• Voltage - Clamping (Max) @ Ipp: Must not exceed 13.6V maximum clamp voltage
• Current - Peak Pulse: Must support minimum 44.1A at 10/1000µs pulse width
• Power - Peak Pulse: Must support 600W dissipation

Mechanical & Environmental Compatibility Criteria:

• Package / Case: Must be DO-214AA (SMB) surface mount
• Operating Temperature Range: Must support -55°C to 150°C
• Mounting Type: Must be Surface Mount
• Grade: Must be Automotive rated
• Qualification: Must meet AEC-Q101 standard
• Moisture Sensitivity Level: Must be MSL 1 or equivalent

Substitute parts are selected only when all electrical parameters fall within the specified ranges and all mechanical, environmental, and qualification requirements are met.

Parameter Comparison

Engineering Selection Recommendations

SMBJE8-0AH (Primary Part): The SMBJE8-0AH remains the primary selection when available. This part is active, carries full AEC-Q101 automotive qualification, and meets all specified electrical and environmental requirements. Current inventory status indicates 705 pieces in stock.

SM6T10AY (Substitute Part): The SM6T10AY from STMicroelectronics is qualified as a substitute part. Both devices share identical mechanical compatibility (DO-214AA SMB package, surface mount), identical operating temperature range (-55°C to 150°C), and equivalent automotive qualification (AEC-Q101). Both parts carry MSL 1 rating and REACH Unaffected status.

Electrical parameter differences exist: The SM6T10AY exhibits a higher reverse standoff voltage (8.55V vs. 8V), higher breakdown voltage (9.5V vs. 8.89V), and higher clamping voltage (18.6V vs. 13.6V). The SM6T10AY also demonstrates higher peak pulse current capability (215A at 8/20µs vs. 44.1A at 10/1000µs). Both devices support 600W peak pulse power dissipation.

Selection between these parts depends on circuit requirements. The SM6T10AY is suitable for applications requiring higher voltage clamping and current handling capacity. The SMBJE8-0AH is appropriate for circuits with lower voltage and current specifications. Both parts are compliant with automotive standards and environmental regulations.

Frequently Asked Questions (FAQ)

Q: Can the SM6T10AY replace the SMBJE8-0AH in all applications?

A: The SM6T10AY has higher clamping voltage (18.6V vs. 13.6V) and higher peak pulse current (215A vs. 44.1A). Substitution is valid only if the circuit design accommodates these higher electrical parameters. The mechanical and environmental compatibility is identical.

Q: Are both parts qualified to the same automotive standard?

A: Yes. Both the SMBJE8-0AH and SM6T10AY carry AEC-Q101 automotive qualification and operate across the identical temperature range of -55°C to 150°C.

Q: Do these parts use the same package?

A: Yes. Both parts use the DO-214AA (SMB) surface mount package and are compatible with identical PCB layouts and assembly processes.

Q: What is the difference in peak pulse current specifications?

A: The SMBJE8-0AH is rated for 44.1A peak pulse current at 10/1000µs pulse width. The SM6T10AY is rated for 215A peak pulse current at 8/20µs pulse width. These represent different test conditions and pulse durations, reflecting different application profiles.

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

A: No. Both parts carry identical REACH Unaffected status, EAR99 ECCN classification, and HTSUS code 8541.10.0080. Both have MSL 1 (Unlimited) moisture sensitivity rating.

Q: Which part should be selected for new designs?

A: Selection depends on circuit voltage and current requirements. For circuits requiring lower clamping voltage (13.6V maximum), the SMBJE8-0AH is appropriate. For circuits requiring higher clamping voltage (18.6V maximum) and higher current handling, the SM6T10AY is appropriate. Both parts meet automotive qualification requirements.