P4KE8.2C Equivalent & Substitute Parts

Part Overview

The P4KE8.2C is a bidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This component features a 6.6V rating with 400W peak pulse power handling capability in a through-hole DO-204AL (DO-41) axial package. The part is currently classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for continued system support and new designs.

Substiute Parts

P4KE8.2C

Littelfuse Inc.In Stock: 790P4KE8.2C Datasheet

Current PartRFQ

P4KE8.2CA

Taiwan Semiconductor CorporationIn Stock: 747P4KE8.2CA Datasheet

DirectRFQ

P4KE8.2CA-G

Comchip TechnologyIn Stock: 719P4KE8.2CA-G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P4KE8.2C is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): 7.02V nominal rating
• Voltage - Clamping (Max) @ Ipp: Maximum 12.71V threshold
• Current - Peak Pulse (10/1000µs): Minimum 33.9A capability
• Power - Peak Pulse: 400W minimum rating
• Package / Case: DO-204AL or DO-41 axial through-hole configuration
• Bidirectional Channels: Single channel operation
• Type: Zener diode TVS topology
• RoHS Status: ROHS3 compliance required

Two active substitute parts meet these electrical and mechanical requirements while maintaining the P4KE series base product number designation.

Parameter Comparison

Engineering Selection Recommendations

Both P4KE8.2CA and P4KE8.2CA-G are active products suitable for replacing the obsolete P4KE8.2C. Selection between these alternatives is based on the following factors:

P4KE8.2CA (Taiwan Semiconductor Corporation) maintains identical voltage standoff and clamping specifications to the original part, with peak pulse current capability of 34A. This part operates across the full temperature range of -55°C to 175°C and carries ROHS3 compliance with REACH unaffected status.

P4KE8.2CA-G (Comchip Technology) provides equivalent electrical performance with a clamping voltage of 12.1V and peak pulse current of 33.06A. This part operates within a reduced temperature range of -55°C to 150°C and is supplied in bulk packaging rather than tape and reel format. ROHS3 compliance and REACH unaffected status are confirmed.

Both parts share identical power dissipation ratings, package configurations, and regulatory compliance classifications. The choice between them depends on application temperature requirements and packaging format availability.

Frequently Asked Questions (FAQ)

Q: Can P4KE8.2CA or P4KE8.2CA-G be used as direct replacements for P4KE8.2C in existing designs?

A: Yes. Both substitute parts maintain the same reverse standoff voltage of 7.02V (P4KE8.2CA) or 7V (P4KE8.2CA-G), equivalent clamping voltages within acceptable tolerance, and identical 400W power dissipation ratings. All three parts use the same DO-204AL/DO-41 axial through-hole package configuration, enabling direct board-level substitution without layout modifications.

Q: What is the difference in clamping voltage between the original and substitute parts?

A: The P4KE8.2C specifies a maximum clamping voltage of 12.71V at peak pulse current. Both substitute parts (P4KE8.2CA and P4KE8.2CA-G) specify 12.1V maximum clamping voltage. This 0.61V reduction represents improved clamping performance and remains within typical circuit design margins for transient suppression applications.

Q: Are there temperature range limitations when selecting between substitutes?

A: The P4KE8.2CA operates across -55°C to 175°C, matching the original part's full temperature range. The P4KE8.2CA-G operates within -55°C to 150°C. Applications requiring operation above 150°C junction temperature must use P4KE8.2CA. For applications within -55°C to 150°C, both parts are suitable.

Q: Do packaging format differences affect electrical performance?

A: No. The P4KE8.2CA is supplied in tape and reel format while P4KE8.2CA-G is supplied in bulk packaging. Both use identical DO-204AL/DO-41 axial through-hole packages. Packaging format affects procurement and handling procedures only, not electrical characteristics or board-level performance.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The P4KE8.2C, P4KE8.2CA, and P4KE8.2CA-G all carry ROHS3 compliance certification. Both active substitutes also carry REACH unaffected status, confirming regulatory compliance for European and international markets.