P6KE100C-B Equivalent & Substitute Parts

Part Overview

The P6KE100C-B is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose voltage protection applications. This component features a 85.5V reverse standoff voltage with a 143.85V maximum clamping voltage and 600W peak pulse power rating in a through-hole DO-204AC (DO-15) axial package. The part is currently classified as obsolete, making identification of active equivalent and substitute parts essential for ongoing design support and procurement.

Substiute Parts

P6KE100C-B

Littelfuse Inc.In Stock: 1200P6KE100C-B Datasheet

Current PartRFQ

P6KE100CA

Fairchild SemiconductorIn Stock: 1543P6KE100CA Datasheet

DirectRFQ

P6KE100CA-B

Littelfuse Inc.In Stock: 890P6KE100CA-B Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P6KE100C-B is determined by strict alignment of the following critical electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): 85.5V
• Voltage - Clamping (Max) @ Ipp: Must not exceed 143.85V to ensure protection threshold compatibility
• Power - Peak Pulse: 600W minimum
• Bidirectional Channels: 1
• Package / Case: DO-204AC (DO-15) axial through-hole configuration
• Operating Temperature Range: Must support -55°C ~ 175°C or equivalent

The identified substitute parts maintain these core parameters while offering active product status and improved availability. Voltage clamping values below the original specification provide enhanced protection margins, while maintaining the same standoff voltage and power dissipation capability.

Parameter Comparison

Engineering Selection Recommendations

P6KE100CA-B (Littelfuse Inc.) is the primary substitute for the obsolete P6KE100C-B. This part maintains identical reverse standoff voltage (85.5V), equivalent power dissipation (600W), and the same operating temperature range (-55°C ~ 175°C). The clamping voltage is reduced to 137V, providing a tighter protection threshold. The part carries active product status and ROHS3 compliance certification, ensuring long-term availability and regulatory alignment.

P6KE100CA (Fairchild Semiconductor) serves as a secondary substitute with identical electrical specifications to the P6KE100CA-B. The primary distinction is the operating temperature lower limit of -50°C versus -55°C. This part is suitable for applications where the minimum operating temperature requirement does not extend below -50°C. RoHS compliance status is not specified for this variant.

Both substitute parts are electrically and mechanically compatible with the original P6KE100C-B in standard through-hole PCB applications, with no design modifications required.

Frequently Asked Questions (FAQ)

Q: Can P6KE100CA-B directly replace P6KE100C-B without circuit modifications?

A: Yes. Both parts share identical reverse standoff voltage (85.5V), power rating (600W), package configuration (DO-204AC/DO-15), and operating temperature range (-55°C ~ 175°C). The reduced clamping voltage (137V vs. 143.85V) provides improved protection margins and requires no design changes.

Q: What is the difference between P6KE100CA and P6KE100CA-B?

A: Both parts are electrically identical with 85.5V standoff voltage, 137V clamping voltage, and 600W power rating. The primary difference is the minimum operating temperature: P6KE100CA-B supports -55°C while P6KE100CA supports -50°C. Selection depends on application temperature requirements.

Q: Are the substitute parts available in the same package as the original?

A: Yes. All three parts use the DO-204AC (DO-15) axial through-hole package, ensuring direct mechanical compatibility on existing PCBs without footprint modifications.

Q: Why is the clamping voltage lower in the substitute parts?

A: The substitute parts (P6KE100CA and P6KE100CA-B) feature a 137V maximum clamping voltage compared to the original 143.85V. This represents a tighter protection threshold while maintaining the same 85.5V reverse standoff voltage, providing enhanced transient suppression performance.

Q: Which substitute should be selected for new designs?

A: P6KE100CA-B is recommended for new designs. It maintains full compatibility with the original specification, carries active product status, and holds ROHS3 compliance certification. P6KE100CA may be selected if the application minimum operating temperature does not require -55°C support.