P6SMB39CAHM3_A/I Equivalent & Substitute Parts

Part Overview

The P6SMB39CAHM3_A/I is a bidirectional transient voltage suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, designed for telecom applications. This surface mount component operates with a 33.3V reverse standoff voltage and provides 600W peak pulse power protection in a compact DO-214AA (SMB) package. The part is classified as obsolete, making identification of active equivalent alternatives essential for ongoing design support and procurement.

Substiute Parts

P6SMB39CAHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 935P6SMB39CAHM3_A/I Datasheet

Current PartRFQ

P6SMB39CAHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 867P6SMB39CAHM3_B/I Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the P6SMB39CAHM3_A/I is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 33.3V
• Voltage - Breakdown (Min): 37.1V
• Voltage - Clamping (Max) @ Ipp: 53.9V
• Current - Peak Pulse (10/1000µs): 11.1A
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA, SMB
• Bidirectional Channels: 1
• Operating Temperature Range: -65°C ~ 150°C (TJ)
• Automotive Grade and AEC-Q101 Qualification

The substitute part P6SMB39CAHM3_B/I maintains identical electrical and mechanical specifications while offering active product status and improved supply chain availability.

Parameter Comparison

Engineering Selection Recommendations

The P6SMB39CAHM3_B/I is the direct equivalent for the obsolete P6SMB39CAHM3_A/I. Both parts are manufactured by Vishay and maintain identical electrical performance specifications. The substitute part carries active product status, ensuring long-term availability and supply chain continuity. Both components meet automotive-grade requirements with AEC-Q101 qualification and ROHS3 compliance, making them suitable for regulated applications. The primary distinction is packaging format: the substitute is supplied in Tape & Reel configuration, which is standard for production environments.

Frequently Asked Questions (FAQ)

Q: Can P6SMB39CAHM3_B/I be used as a direct replacement for P6SMB39CAHM3_A/I?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters. The substitute maintains the same voltage ratings, current handling, power dissipation, package type, and operating temperature range.

Q: What is the difference between the two part numbers?

A: The primary difference is product status and packaging. P6SMB39CAHM3_A/I is obsolete, while P6SMB39CAHM3_B/I is active. The substitute is supplied in Tape & Reel packaging, standard for high-volume manufacturing, whereas the original was available in bulk form.

Q: Are there any compliance or certification differences?

A: No. Both parts carry identical automotive-grade classification, AEC-Q101 qualification, ROHS3 compliance, and REACH unaffected status.

Q: Does the DO-214AA (SMB) package remain the same?

A: Yes. Both parts use the identical DO-214AA surface mount package, ensuring PCB footprint and assembly compatibility without design modification.

Q: What are the critical electrical parameters for substitution?

A: The defining parameters are 33.3V reverse standoff voltage, 37.1V minimum breakdown voltage, 53.9V maximum clamping voltage at 11.1A peak pulse current, and 600W peak pulse power rating. Any substitute must match these specifications exactly.

Q: Is the operating temperature range identical?

A: Yes. Both parts operate across -65°C to 150°C junction temperature, maintaining performance across the full automotive temperature spectrum.