P6SMB39AHM3_A/I Equivalent & Substitute Parts

Part Overview

The P6SMB39AHM3_A/I is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component is designed for transient overvoltage protection in telecom applications, featuring a 33.3V reverse standoff voltage and 53.9V maximum clamping voltage in a surface mount DO-214AA (SMB) package. The part is currently listed as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement.

Substiute Parts

P6SMB39AHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1008P6SMB39AHM3_A/I Datasheet

Current PartRFQ

P6SMB39AHM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 698P6SMB39AHM3_B/I Datasheet

MFR RecommendedRFQ

P6SMB39A-AU_R2_000A1

Panjit International Inc.In Stock: 1186P6SMB39A-AU_R2_000A1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P6SMB39AHM3_A/I is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): 33.3V
• Voltage - Clamping (Max) @ Ipp: 53.9V
• Current - Peak Pulse (10/1000µs): 11.1A minimum
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA (SMB)
• Type: Zener, Unidirectional
• Mounting Type: Surface Mount
• Automotive Grade and AEC-Q101 Qualification

All identified substitute parts maintain identical voltage specifications, clamping characteristics, and package form factor. Peak pulse current specifications remain within acceptable tolerance. All substitutes retain automotive-grade qualification and AEC-Q101 compliance.

Parameter Comparison

Engineering Selection Recommendations

P6SMB39AHM3_B/I is the primary substitute, manufactured by the original equipment supplier Vishay General Semiconductor - Diodes Division. This part maintains identical electrical specifications and operating temperature range while offering active product status and improved availability.

P6SMB39A-AU_R2_000A1 from Panjit International Inc. is a secondary substitute option. This part meets all critical voltage and power specifications with marginally higher peak pulse current (11.2A vs. 11.1A). The operating temperature range is reduced to -55°C ~ 150°C (TJ), which may impact suitability for applications requiring the full -65°C lower limit. Both parts maintain automotive-grade qualification and AEC-Q101 compliance.

Frequently Asked Questions (FAQ)

Q: Can P6SMB39AHM3_B/I be used as a direct replacement for P6SMB39AHM3_A/I?

A: Yes. Both parts share identical voltage specifications (33.3V reverse standoff, 53.9V clamping), current ratings (11.1A peak pulse), power dissipation (600W), and package form factor (DO-214AA SMB). Both maintain automotive-grade qualification and AEC-Q101 compliance. The primary difference is product status: P6SMB39AHM3_B/I is active while the original is obsolete.

Q: What is the difference between P6SMB39AHM3_B/I and P6SMB39A-AU_R2_000A1?

A: Both parts meet the core voltage and power specifications. The Panjit part (P6SMB39A-AU_R2_000A1) offers slightly higher peak pulse current (11.2A) but has a reduced lower operating temperature limit (-55°C vs. -65°C). For applications requiring operation below -55°C, the Vishay substitute (P6SMB39AHM3_B/I) is required.

Q: Are all substitutes in the same package?

A: Yes. All parts use the DO-214AA (SMB) surface mount package, ensuring mechanical and thermal compatibility in existing PCB layouts.

Q: Do all substitutes meet automotive qualification requirements?

A: Yes. All substitute parts carry automotive-grade designation and AEC-Q101 qualification, maintaining compliance with automotive industry standards.