P6KE47C-B Equivalent & Substitute Parts

Part Overview

The P6KE47C-B is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This component features a 40.2V reverse standoff voltage with a 68.04V 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 functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

P6KE47C-B

Littelfuse Inc.In Stock: 1113P6KE47C-B Datasheet

Current PartRFQ

P6KE47CA

Diotec SemiconductorIn Stock: 25492P6KE47CA Datasheet

DirectRFQ

P6KE47CA-B

Littelfuse Inc.In Stock: 1156P6KE47CA-B Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P6KE47C-B is determined by the following critical parameters:

• Reverse standoff voltage: 40.2V (Typ)
• Breakdown voltage minimum: 42.35V or higher
• Maximum clamping voltage: 68.04V or lower
• Peak pulse power: 600W
• Package type: DO-204AC / DO-15 axial through-hole
• Bidirectional channels: 1
• Operating temperature range: -55°C to 175°C or compatible subset

The identified substitute parts meet these electrical and mechanical requirements, ensuring functional compatibility in circuit protection applications.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are active products with current manufacturing status, providing supply continuity for applications previously using the obsolete P6KE47C-B.

P6KE47CA-B (Littelfuse Inc.) is the preferred substitute, maintaining the same manufacturer as the original part and offering identical operating temperature range (-55°C to 175°C). This part provides the most direct replacement path with equivalent thermal specifications and Littelfuse manufacturing consistency.

P6KE47CA (Diotec Semiconductor) is an alternative substitute from a different manufacturer. While it meets all critical electrical parameters and package requirements, the operating temperature minimum is -50°C rather than -55°C. This part is suitable for applications where the lower temperature limit is not a design constraint.

Both substitutes feature lower maximum clamping voltages (64.8V versus 68.04V) and higher minimum breakdown voltages (44.7V versus 42.35V), representing tighter voltage specifications that remain within acceptable protection parameters for general-purpose applications.

Frequently Asked Questions (FAQ)

Q: Can P6KE47CA-B be used as a direct replacement for P6KE47C-B?

A: Yes. Both parts share identical reverse standoff voltage (40.2V), peak pulse power (600W), package type (DO-204AC/DO-15 axial), and operating temperature range (-55°C to 175°C). The P6KE47CA-B features a lower maximum clamping voltage (64.8V versus 68.04V), which provides enhanced protection margins in circuit applications.

Q: What is the difference between P6KE47CA and P6KE47CA-B?

A: Both parts are electrically equivalent with identical voltage and power specifications. The primary difference is the operating temperature minimum: P6KE47CA operates from -50°C, while P6KE47CA-B operates from -55°C. For applications requiring full -55°C operation, P6KE47CA-B is the appropriate selection.

Q: Are all substitute parts in the same package?

A: Yes. All parts use the DO-204AC (DO-15) axial through-hole package, ensuring mechanical and pin compatibility without PCB layout modifications.

Q: Do the substitute parts maintain RoHS3 compliance?

A: Yes. Both P6KE47CA and P6KE47CA-B are ROHS3 compliant, matching the environmental compliance status of the original P6KE47C-B.

Q: What inventory status should be considered for procurement?

A: P6KE47CA-B (Littelfuse) has 1116 units in stock, and P6KE47CA (Diotec) has 25400 units in stock, providing adequate supply for both immediate and volume requirements.