P6SMB47CA-Q Equivalent & Substitute Parts

Part Overview

The P6SMB47CA-Q is an automotive-grade transient voltage suppressor (TVS) diode manufactured by Bourns Inc. in the DO-214AA (SMB) surface mount package. This bidirectional zener diode is designed for telecom applications requiring transient voltage protection with a reverse standoff voltage of 40.2V and peak pulse current handling of 9.4A. The device holds Active product status and carries AEC-Q101 automotive qualification with ROHS3 compliance. Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and quality certifications can be maintained across alternative manufacturers while serving the same protective function in circuit design.

Substiute Parts

P6SMB47CA-Q

Bourns Inc.In Stock: 1116P6SMB47CA-Q Datasheet

Current PartRFQ

SMBJE40CAH

Eaton - Electronics DivisionIn Stock: 3712SMBJE40CAH Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P6SMB47CA-Q is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Reverse standoff voltage within 40V to 40.2V range
• Breakdown voltage minimum between 44.4V and 44.7V
• Clamping voltage maximum between 64.5V and 64.8V at peak pulse current
• Peak pulse current rating of 9.3A to 9.4A (10/1000µs waveform)
• Peak pulse power rating of 600W

Mechanical & Package Equivalence:

• DO-214AA (SMB) surface mount package
• Bidirectional zener diode configuration
• Single channel topology

Quality & Compliance Equivalence:

• Automotive grade classification
• AEC-Q101 qualification
• ROHS3 compliance
• Moisture Sensitivity Level 1 (Unlimited)
• Active product status

The SMBJE40CAH from Eaton - Electronics Division meets all substitution criteria within the specified parameter tolerances.

Parameter Comparison

Engineering Selection Recommendations

The SMBJE40CAH qualifies as a direct substitute for the P6SMB47CA-Q based on the following engineering criteria:

Electrical Performance: Both devices operate within the same voltage and current specifications for transient suppression in telecom applications. The clamping voltage differential of 0.3V and peak pulse current differential of 0.1A fall within acceptable engineering tolerances for TVS diode applications.

Mechanical Compatibility: Both parts utilize the DO-214AA (SMB/SMBJ) surface mount package, ensuring identical PCB footprint and reflow soldering compatibility without design modification.

Quality Assurance: Both devices carry Active product status, automotive-grade classification, and AEC-Q101 qualification, confirming suitability for automotive and industrial telecom environments. ROHS3 compliance and MSL 1 rating ensure environmental and moisture handling equivalence.

Supply Chain Consideration: The SMBJE40CAH maintains higher inventory availability (3647 pcs) compared to the P6SMB47CA-Q (1049 pcs), supporting procurement flexibility.

Frequently Asked Questions (FAQ)

Q: Can the SMBJE40CAH be used as a direct replacement for the P6SMB47CA-Q without circuit redesign?

A: Yes. Both devices share identical electrical specifications within engineering tolerance, the same DO-214AA surface mount package, and equivalent automotive-grade certifications. No circuit redesign is required for substitution.

Q: What is the significance of the 0.3V clamping voltage difference between these parts?

A: The clamping voltage differential of 0.3V (64.8V vs 64.5V) represents a 0.46% variation and falls within standard TVS diode manufacturing tolerances. Both values remain within acceptable transient suppression performance for telecom circuit protection.

Q: Are both parts suitable for the same operating temperature range?

A: Yes. Both the P6SMB47CA-Q and SMBJE40CAH operate across -55°C to 150°C junction temperature, ensuring equivalent thermal performance in automotive and industrial applications.

Q: Do both parts require identical PCB layout and soldering procedures?

A: Yes. Both devices use the DO-214AA (SMB) surface mount package with identical lead configuration and footprint. Standard SMB reflow soldering procedures apply to both parts without modification.

Q: What certifications confirm these parts are suitable for automotive applications?

A: Both devices carry AEC-Q101 automotive qualification and automotive-grade classification, confirming compliance with automotive reliability and quality standards. ROHS3 compliance addresses environmental regulatory requirements.

Q: Is there a difference in moisture sensitivity between these parts?

A: No. Both devices carry Moisture Sensitivity Level 1 (Unlimited), indicating no moisture bake-out requirement before soldering and equivalent handling procedures.