P6SMB6.8AHM3_A/H Equivalent & Substitute Parts

Part Overview

The P6SMB6.8AHM3_A/H is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component is designed for telecom applications requiring transient voltage protection in surface mount configurations. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

P6SMB6.8AHM3_A/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 762P6SMB6.8AHM3_A/H Datasheet

Current PartRFQ

P6SMB6.8AHM3_B/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 744P6SMB6.8AHM3_B/H Datasheet

MFR RecommendedRFQ

SMBJE5-0AH

Eaton - Electronics DivisionIn Stock: 3048SMBJE5-0AH Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the P6SMB6.8AHM3_A/H is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): 5.8V nominal
• Voltage - Clamping (Max) @ Ipp: 10.5V maximum
• Current - Peak Pulse (10/1000µs): 57.1A minimum
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA (SMB) form factor
• Mounting Type: Surface Mount
• Unidirectional Channels: 1
• Automotive Grade with AEC-Q101 qualification

Substitute parts must maintain electrical performance within these parameters to ensure functional equivalence in telecom protection circuits.

Parameter Comparison

Engineering Selection Recommendations

P6SMB6.8AHM3_B/H is the primary recommended substitute. This part is manufactured by the same supplier (Vishay) and maintains identical electrical specifications including reverse standoff voltage, clamping voltage, and peak pulse current. The part is currently in active production status, ensuring long-term availability. It carries the same automotive grade and AEC-Q101 qualification as the original part, with ROHS3 compliance maintained. The only difference is packaging format (Bulk vs. original specification), which does not affect electrical performance.

SMBJE5-0AH is an alternative substitute manufactured by Eaton. This part operates at a lower reverse standoff voltage (5V vs. 5.8V) and lower clamping voltage (9.2V vs. 10.5V), resulting in tighter voltage regulation. The peak pulse current is higher (65.2A vs. 57.1A), providing enhanced transient suppression capability. This part is active in production and maintains automotive grade with AEC-Q101 qualification. The operating temperature range is narrower (-55°C to 150°C vs. -65°C to 150°C). Selection of this substitute requires circuit-level verification that the lower standoff and clamping voltages are compatible with the protected circuit design.

Frequently Asked Questions (FAQ)

Q: Can P6SMB6.8AHM3_B/H be used as a direct replacement for P6SMB6.8AHM3_A/H?

A: Yes. Both parts share identical electrical specifications including reverse standoff voltage (5.8V), clamping voltage (10.5V), and peak pulse current (57.1A). Both are manufactured by Vishay, carry AEC-Q101 qualification, and are rated for automotive applications. The primary difference is product status (active vs. obsolete) and packaging format.

Q: What are the key differences between P6SMB6.8AHM3_A/H and SMBJE5-0AH?

A: The SMBJE5-0AH operates at lower voltage levels: 5V reverse standoff (vs. 5.8V) and 9.2V clamping voltage (vs. 10.5V). It provides higher peak pulse current (65.2A vs. 57.1A) and has a narrower operating temperature range (-55°C to 150°C vs. -65°C to 150°C). Both maintain automotive grade and AEC-Q101 qualification. Circuit compatibility must be verified before substitution.

Q: Are all substitute parts in the same package?

A: All substitute parts use surface mount DO-214AA form factor (SMB/SMBJ variants). This ensures mechanical compatibility with existing PCB layouts. Pin configuration and footprint are equivalent across all listed substitutes.

Q: What compliance certifications apply to these parts?

A: All listed parts carry AEC-Q101 automotive qualification and are ROHS3 compliant or REACH unaffected. These certifications ensure suitability for automotive and telecom applications requiring transient voltage protection.

Q: Why is the original part listed as obsolete?

A: The P6SMB6.8AHM3_A/H is obsolete, meaning it is no longer manufactured. Active substitutes such as P6SMB6.8AHM3_B/H and SMBJE5-0AH are available for new designs and ongoing procurement requirements.