P6SMB27A-Q Equivalent & Substitute Parts

Part Overview

The P6SMB27A-Q is an active-status unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Bourns Inc. in the DO-214AA (SMB) surface mount package. This component is designed for telecom applications requiring transient voltage protection with a 23.1V reverse standoff voltage and 37.5V maximum clamping voltage. The part is AEC-Q101 qualified for automotive-grade reliability and RoHS3 compliant.

Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility is required while maintaining functional compatibility within specified electrical and mechanical parameters.

Substiute Parts

P6SMB27A-Q

Bourns Inc.In Stock: 885P6SMB27A-Q Datasheet

Current PartRFQ

SMBJE22AH

Eaton - Electronics DivisionIn Stock: 4043SMBJE22AH Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P6SMB27A-Q is determined by strict alignment of the following critical parameters:

Electrical Compatibility Criteria:

• Voltage - Reverse Standoff (Typ): 22V to 23.1V range
• Voltage - Clamping (Max) @ Ipp: 35.5V to 37.5V range
• Current - Peak Pulse (10/1000µs): ≥16.3A
• Power - Peak Pulse: 600W minimum

Mechanical & Packaging Compatibility:

• Package / Case: DO-214AA or SMB equivalent
• Mounting Type: Surface Mount
• Unidirectional Channels: 1

Compliance & Qualification:

• Grade: Automotive
• Qualification: AEC-Q101
• RoHS Status: ROHS3 Compliant
• Operating Temperature: -55°C to 150°C (TJ)

The SMBJE22AH from Eaton - Electronics Division meets these substitution criteria with compatible electrical performance within the specified tolerance bands and identical mechanical packaging.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: P6SMB27A-Q (Bourns Inc.)

The P6SMB27A-Q is the specified component with active product status and established supply availability (816 pcs in stock). This part carries full AEC-Q101 automotive qualification and ROHS3 compliance, meeting all regulatory requirements for telecom protection applications.

Substitute Selection: SMBJE22AH (Eaton - Electronics Division)

The SMBJE22AH is qualified as a direct substitute when P6SMB27A-Q availability is constrained. This part maintains identical automotive grade and AEC-Q101 qualification status. Electrical parameters fall within compatible tolerance bands: reverse standoff voltage is 1.1V lower (22V vs. 23.1V), clamping voltage is 2V lower (35.5V vs. 37.5V), and peak pulse current is 0.6A higher (16.9A vs. 16.3A). The identical DO-214AA package, surface mount configuration, and operating temperature range ensure direct PCB compatibility without layout or assembly modifications. ROHS3 compliance and unlimited moisture sensitivity level (MSL 1) match the primary part specifications.

Both parts are suitable for telecom transient voltage suppression applications with equivalent functional performance within the specified electrical and mechanical constraints.

Frequently Asked Questions (FAQ)

Q: Can SMBJE22AH be used as a direct replacement for P6SMB27A-Q on existing PCBs?

A: Yes. Both parts use identical DO-214AA (SMB) surface mount packaging with the same pinout and footprint. No PCB layout or assembly process modifications are required.

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

A: The P6SMB27A-Q has a 23.1V reverse standoff voltage and 37.5V clamping voltage. The SMBJE22AH has a 22V reverse standoff voltage and 35.5V clamping voltage. Both operate within the same functional protection band for telecom applications. The 1.1V standoff difference and 2V clamping difference are within acceptable tolerance for transient suppression circuits.

Q: Are both parts automotive-qualified?

A: Yes. Both the P6SMB27A-Q and SMBJE22AH carry AEC-Q101 automotive qualification and are rated for automotive-grade reliability.

Q: Do these parts have identical compliance certifications?

A: Yes. Both parts are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity level (MSL 1 - Unlimited). Both are classified under ECCN EAR99 and HTSUS 8541.10.0080.

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

A: Both parts operate across -55°C to 150°C junction temperature (TJ), providing identical thermal performance specifications.

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

A: Yes. Both parts meet identical electrical, mechanical, and compliance requirements for telecom transient voltage suppression. Design selection may be based on supplier availability, lead time, or inventory status.

Q: What is the peak pulse current rating difference?

A: The P6SMB27A-Q is rated for 16.3A peak pulse current (10/1000µs), while the SMBJE22AH is rated for 16.9A. The SMBJE22AH provides 0.6A additional current handling capacity within the same 600W peak pulse power rating.