P4KE82C-B Equivalent & Substitute Parts

Part Overview

The P4KE82C-B is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This component features a 70.1V reverse standoff voltage with a maximum clamping voltage of 118.65V and peak pulse current capability of 3.6A. The part is packaged in a DO-204AL (DO-41) through-hole configuration with 400W peak pulse power rating.

The P4KE82C-B is classified as obsolete. Equivalent substitute parts are available from active product lines that maintain the same electrical and mechanical specifications, enabling continued system design and maintenance.

Substiute Parts

P4KE82C-B

Littelfuse Inc.In Stock: 1176P4KE82C-B Datasheet

Current PartRFQ

P4KE82CA

Taiwan Semiconductor CorporationIn Stock: 1110P4KE82CA Datasheet

DirectRFQ

P4KE82CA-B

LittelfuseIn Stock: 1019P4KE82CA-B Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P4KE82C-B are qualified based on the following critical parameters that define functional equivalence:

• Voltage - Reverse Standoff (Typ): 70.1V
• Voltage - Clamping (Max) @ Ipp: Within acceptable operating range
• Current - Peak Pulse (10/1000µs): 3.6A minimum
• Power - Peak Pulse: 400W
• Operating Temperature Range: -55°C ~ 175°C (TJ)
• Mounting Type: Through Hole
• Package / Case: DO-204AL (DO-41)
• Type: Zener, Bidirectional Channels: 1

The substitute parts P4KE82CA and P4KE82CA-B maintain identical reverse standoff voltage, operating temperature range, mounting configuration, and package specifications. Both substitutes operate within the same P4KE series and support the same general-purpose protection applications.

Parameter Comparison

Engineering Selection Recommendations

Both P4KE82CA and P4KE82CA-B are active product alternatives to the obsolete P4KE82C-B. Selection between these substitutes should be based on the following factors:

P4KE82CA (Taiwan Semiconductor Corporation): This part is available in Tape & Reel packaging and offers 3.7A peak pulse current, providing slightly higher current capability than the original specification. It maintains ROHS3 compliance and REACH Unaffected status.

P4KE82CA-B (Littelfuse): This part is available in Bulk packaging and matches the original 3.6A peak pulse current specification exactly. It is manufactured by the original equipment supplier and maintains ROHS3 compliance and REACH Unaffected status.

Both substitutes feature lower maximum clamping voltage (113V versus 118.65V) and higher minimum breakdown voltage (77.9V versus 73.8V) compared to the original part, representing tighter voltage regulation characteristics within the same functional class.

Frequently Asked Questions (FAQ)

Q: Can P4KE82CA and P4KE82CA-B be used interchangeably with P4KE82C-B?

A: Yes. Both parts maintain the same reverse standoff voltage (70.1V), operating temperature range (-55°C to 175°C), through-hole mounting configuration, and DO-204AL package specification. The clamping voltage and breakdown voltage differences represent normal manufacturing tolerance variations within the P4KE series design envelope.

Q: What is the difference between P4KE82CA and P4KE82CA-B?

A: The primary differences are manufacturer and packaging format. P4KE82CA is supplied by Taiwan Semiconductor Corporation in Tape & Reel format with 3.7A peak pulse current. P4KE82CA-B is supplied by Littelfuse in Bulk format with 3.6A peak pulse current. Both maintain identical electrical performance for the core protection function.

Q: Does packaging format affect electrical performance?

A: No. Tape & Reel and Bulk packaging formats do not affect the electrical characteristics of the TVS diode. Packaging selection is determined by assembly process requirements and inventory management practices.

Q: Are all three parts RoHS compliant?

A: Yes. P4KE82C-B, P4KE82CA, and P4KE82CA-B are all ROHS3 compliant. The substitute parts also carry REACH Unaffected status.

Q: Why does the clamping voltage differ between the main part and substitutes?

A: The P4KE82CA and P4KE82CA-B feature a maximum clamping voltage of 113V compared to 118.65V for the P4KE82C-B. This represents a tighter voltage regulation characteristic and is within normal design variation for the P4KE series. Both values support the same general-purpose protection applications.