P6SMB30A-Q Equivalent & Substitute Parts

Part Overview

The P6SMB30A-Q is an active Transient Voltage Suppressor (TVS) diode manufactured by Bourns Inc., designed for telecom applications requiring transient voltage protection. This unidirectional zener diode operates in the 25.6V reverse standoff voltage range with a 41.4V maximum clamping voltage and 14.7A peak pulse current capability. The device is packaged in DO-214AA (SMB) surface mount format and meets automotive-grade AEC-Q101 qualification standards. Finding equivalent substitute parts is necessary to address supply chain flexibility, inventory optimization, and alternative sourcing requirements while maintaining identical electrical and mechanical performance characteristics.

Substiute Parts

P6SMB30A-Q

Bourns Inc.In Stock: 743P6SMB30A-Q Datasheet

Current PartRFQ

SMBJE26AH

Eaton - Electronics DivisionIn Stock: 7005SMBJE26AH Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P6SMB30A-Q are identified based on strict electrical and mechanical parameter alignment within the TVS diode category. The substitution logic is based on the following critical parameters:

Electrical Compatibility Criteria:

• Reverse standoff voltage within the 25.6V to 26V range
• Breakdown voltage minimum between 28.5V and 28.9V
• Clamping voltage maximum between 41.4V and 42.1V
• Peak pulse current capability of 14.3A to 14.7A
• Peak pulse power rating of 600W
• Operating temperature range of -55°C to 150°C (TJ)

Mechanical & Compliance Criteria:

• Package format: DO-214AA (SMB) surface mount
• Unidirectional zener diode configuration
• Automotive grade with AEC-Q101 qualification
• ROHS3 compliance
• MSL rating of 1 (Unlimited)
• Telecom application suitability

The SMBJE26AH from Eaton - Electronics Division meets all specified criteria and is classified as a manufacturer-recommended substitute.

Parameter Comparison

Engineering Selection Recommendations

The SMBJE26AH is a direct substitute for the P6SMB30A-Q based on the following engineering criteria:

Electrical Performance: Both devices operate within the same voltage classification range (25.6V to 26V reverse standoff), with clamping voltages within 0.7V of each other (41.4V vs. 42.1V). Peak pulse current ratings are within 0.4A tolerance (14.7A vs. 14.3A), and both maintain identical 600W peak pulse power dissipation. These parameters ensure equivalent transient suppression performance in telecom protection circuits.

Compliance & Certification: Both parts carry automotive-grade designation with AEC-Q101 qualification, ROHS3 compliance, and MSL 1 (Unlimited) moisture sensitivity rating. These certifications confirm suitability for demanding telecom and automotive applications without additional qualification testing.

Package & Mounting: Identical DO-214AA (SMB) surface mount packaging ensures direct PCB footprint compatibility and assembly process compatibility without design modification.

Product Status: Both devices maintain active product status, ensuring continued availability and manufacturing support.

Frequently Asked Questions (FAQ)

Q: Can the SMBJE26AH be used as a direct replacement for the P6SMB30A-Q without PCB modifications?

A: Yes. Both devices use identical DO-214AA (SMB) surface mount packaging with the same pinout and footprint. No PCB layout changes are required for substitution.

Q: What is the voltage difference between these two parts, and does it affect circuit performance?

A: The reverse standoff voltage differs by 0.4V (25.6V vs. 26V), and the clamping voltage differs by 0.7V (41.4V vs. 42.1V). These differences fall within the normal tolerance range for TVS diode specifications and do not affect transient suppression performance in telecom applications.

Q: Are both parts qualified for automotive applications?

A: Yes. Both the P6SMB30A-Q and SMBJE26AH carry automotive-grade designation and AEC-Q101 qualification, confirming suitability for automotive and telecom environments.

Q: What is the peak pulse current difference, and is it significant?

A: The peak pulse current differs by 0.4A (14.7A vs. 14.3A). Both devices maintain the same 600W peak pulse power rating. This difference is within standard TVS diode manufacturing tolerances and does not impact circuit protection capability.

Q: Do both parts have the same moisture sensitivity rating?

A: Yes. Both devices carry MSL 1 (Unlimited) moisture sensitivity level, indicating no moisture-related storage or handling restrictions.

Q: Can these parts be used interchangeably in existing designs?

A: Yes. Electrical parameters, mechanical packaging, compliance certifications, and operating temperature ranges are equivalent. Direct substitution is supported without design review or re-qualification.