P6KE68A-B Equivalent & Substitute Parts

Part Overview

The P6KE68A-B is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Diodes Incorporated, designed for general-purpose overvoltage protection applications. This component operates with a reverse standoff voltage of 58.1V and provides clamping at 92V with a peak pulse current rating of 6.5A. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, supply chain considerations, or manufacturer availability while maintaining identical or compatible electrical and mechanical specifications.

Substiute Parts

P6KE68A-B

Diodes IncorporatedIn Stock: 805P6KE68A-B Datasheet

Current PartRFQ

P6KE68A

Fairchild SemiconductorIn Stock: 8738P6KE68A Datasheet

DirectRFQ

P6KE68A-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 4803P6KE68A-E3/54 Datasheet

DirectRFQ

P6KE68A-TP

Micro Commercial CoIn Stock: 1412P6KE68A-TP Datasheet

DirectRFQ

TP6KE68A

LittelfuseIn Stock: 2435TP6KE68A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P6KE68A-B are qualified based on the following critical parameters that determine functional equivalence:

• Voltage - Reverse Standoff (Typ): 58.1V
• Voltage - Breakdown (Min): 64.6V
• Voltage - Clamping (Max) @ Ipp: 92V
• Current - Peak Pulse (10/1000µs): 6.5A minimum
• Power - Peak Pulse: 600W
• Operating Temperature Range: -55°C to 175°C
• Mounting Type: Through Hole
• Package / Case: DO-204AC or DO-15 (Axial)
• Type: Zener, Unidirectional (1 channel)

All identified substitute parts maintain these electrical specifications within the allowed tolerances and are packaged in compatible through-hole formats. Variations in peak pulse current above 6.5A and operating temperature ranges that encompass or exceed the specified range are acceptable for substitution purposes.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain active production status and meet ROHS3 compliance requirements. Selection among equivalent parts should be based on the following factors:

Fairchild P6KE68A: Offers slightly elevated peak pulse current (6.8A) with a reduced lower operating temperature limit (-50°C versus -55°C). This part is suitable for applications where the extended lower temperature range is not required.

Vishay P6KE68A-E3/54: Maintains full specification alignment with the original part, including the -55°C lower operating temperature limit. This part is supplied in Cut Tape packaging and carries the TransZorb® series designation.

Micro Commercial Co P6KE68A-TP: Provides exact electrical specification match with the original part and is available in Cut Tape packaging format.

Littelfuse TP6KE68A: Meets all electrical specifications with a marginally higher peak pulse current rating (6.6A). This part carries AEC-Q101 automotive qualification and is designated as a manufacturer-recommended substitute. It is supplied in Cut Tape packaging.

All substitute parts are compatible with existing PCB layouts designed for DO-15 or DO-204AC axial through-hole packages.

Frequently Asked Questions (FAQ)

Q: Can I substitute the P6KE68A-B with any of the listed equivalent parts?

A: Yes. All listed parts maintain identical voltage specifications (58.1V standoff, 64.6V breakdown, 92V clamping) and equivalent current ratings (6.5A or higher). All are packaged in compatible DO-15/DO-204AC through-hole formats and are suitable for direct substitution in circuit designs.

Q: What is the difference between the Fairchild P6KE68A and the original P6KE68A-B?

A: The Fairchild part offers a slightly higher peak pulse current (6.8A versus 6.5A) but has a reduced lower operating temperature limit of -50°C instead of -55°C. For applications operating above -50°C, this part is fully equivalent.

Q: Why does the Littelfuse TP6KE68A have AEC-Q101 qualification?

A: AEC-Q101 is an automotive-grade qualification standard. The Littelfuse part meets this standard, making it suitable for automotive and high-reliability applications. This qualification does not affect its use in general-purpose applications.

Q: Are there packaging differences between the substitute parts?

A: The original P6KE68A-B is supplied in bulk packaging. Substitute parts are available in Cut Tape (CT) or bulk formats depending on the manufacturer. All parts use the same DO-15 or DO-204AC through-hole package format and are mechanically and electrically interchangeable on the PCB.

Q: Can I use the Fairchild part in an application requiring -55°C operation?

A: No. The Fairchild P6KE68A has a minimum operating temperature of -50°C. For applications requiring operation at -55°C, use the P6KE68A-E3/54 (Vishay), P6KE68A-TP (MCC), or TP6KE68A (Littelfuse).

Q: What does "Current - Peak Pulse (10/1000µs)" mean?

A: This parameter specifies the maximum peak pulse current the TVS diode can handle during a transient event with a pulse duration of 10 microseconds and a decay time of 1000 microseconds. All listed parts support at least 6.5A under these conditions.