P6KE33C Equivalent & Substitute Parts

Part Overview

The P6KE33C is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose voltage clamping applications. This bidirectional zener diode operates in the DO-15 package with a reverse standoff voltage of 28.2V and peak pulse power rating of 600W. The part is currently listed as obsolete, making equivalent substitutes necessary for ongoing design support and procurement.

Substiute Parts

P6KE33C

Littelfuse Inc.In Stock: 901P6KE33C Datasheet

Current PartRFQ

P6KE33CA

Diotec SemiconductorIn Stock: 9289P6KE33CA Datasheet

DirectRFQ

P6KE33CA

Diotec SemiconductorIn Stock: 9289P6KE33CA Datasheet

DirectRFQ

P6KE33CA

Diotec SemiconductorIn Stock: 9289P6KE33CA Datasheet

DirectRFQ

P6KE33CA-G

Comchip TechnologyIn Stock: 1027P6KE33CA-G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P6KE33C is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Voltage - Reverse Standoff (Typ): 28.2V
• Voltage - Breakdown (Min): within acceptable range for the application
• Voltage - Clamping (Max) @ Ipp: comparable clamping performance
• Power - Peak Pulse: 600W minimum
• Bidirectional Channels: 1
• Type: Zener

Mechanical Compatibility Criteria:

• Mounting Type: Through Hole
• Package / Case: DO-204AC, DO-15, Axial
• Operating Temperature Range: compatible with application requirements

The substitute parts listed below maintain these core parameters, ensuring functional equivalence in transient voltage suppression applications.

Parameter Comparison

Engineering Selection Recommendations

P6KE33CA (Diotec Semiconductor): This part maintains identical reverse standoff voltage (28.2V) and peak pulse power rating (600W) as the original P6KE33C. The part is currently in active production status with high inventory availability (9278 pcs). All compliance certifications match the original specification, including ROHS3 compliance. The clamping voltage is lower (45.7V vs. 47.99V), which provides improved transient suppression performance.

P6KE33CA-G (Comchip Technology): This manufacturer-recommended substitute also maintains the 28.2V reverse standoff voltage and 600W power rating. The part is in active production with ROHS3 compliance. Operating temperature range is -55°C ~ 150°C, which is narrower than the original specification at the upper limit (150°C vs. 175°C). This part is supplied in Tape & Box packaging format.

Both substitute parts are electrically and mechanically compatible with the P6KE33C in DO-15 through-hole applications. Selection between them depends on specific operating temperature requirements and packaging preferences.

Frequently Asked Questions (FAQ)

Q: Can P6KE33CA replace P6KE33C directly? A: Yes. Both parts share the same reverse standoff voltage (28.2V), peak pulse power rating (600W), bidirectional channel configuration, and DO-15 through-hole package. Electrical performance is equivalent for general-purpose transient voltage suppression applications.

Q: What is the difference between P6KE33CA and P6KE33CA-G? A: Both parts maintain identical electrical specifications for reverse standoff voltage and power rating. The primary difference is the operating temperature range: P6KE33CA operates from -50°C to 175°C, while P6KE33CA-G operates from -55°C to 150°C. Selection depends on application temperature requirements.

Q: Why is the clamping voltage lower in the substitute parts? A: The P6KE33CA and P6KE33CA-G have clamping voltages of 45.7V compared to the original 47.99V. This represents improved transient suppression performance, as lower clamping voltage provides better protection against voltage spikes while maintaining the same standoff voltage specification.

Q: Are all substitute parts ROHS3 compliant? A: Yes. The P6KE33CA (Diotec) and P6KE33CA-G (Comchip) are both ROHS3 compliant, matching the original P6KE33C specification.

Q: What packaging options are available for substitutes? A: P6KE33CA (Diotec) is available in standard packaging. P6KE33CA-G (Comchip) is supplied in Tape & Box (TB) format. Both are compatible with through-hole assembly processes using the DO-15 package.

Q: Can I use these substitutes in high-temperature applications above 150°C? A: P6KE33CA (Diotec) is rated to 175°C and is suitable for high-temperature applications. P6KE33CA-G (Comchip) is rated to 150°C maximum and should not be used in applications requiring operation above this temperature.