P4KE24 Transient Voltage Suppressor Equivalent & Substitute Parts

Part Overview

The P4KE24 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This component features a 20.5V reverse standoff voltage with 400W peak pulse power handling capability in a through-hole DO-204AL (DO-41) axial package. The P4KE24 is currently classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity.

Substiute Parts

P4KE24

Littelfuse Inc.In Stock: 932P4KE24 Datasheet

Current PartRFQ

P4KE24A

Taiwan Semiconductor CorporationIn Stock: 300250P4KE24A Datasheet

DirectRFQ

P4KE24A-AP

Micro Commercial CoIn Stock: 982P4KE24A-AP Datasheet

MFR RecommendedRFQ

P4KE24A-BP

Micro Commercial CoIn Stock: 870P4KE24A-BP Datasheet

MFR RecommendedRFQ

P4KE24A-G

Comchip TechnologyIn Stock: 1182P4KE24A-G Datasheet

MFR RecommendedRFQ

P4KE24A-TP

Micro Commercial CoIn Stock: 983P4KE24A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P4KE24 are qualified based on the following critical parameters that determine functional equivalence:

• Voltage - Reverse Standoff (Typ): 20.5V
• Voltage - Clamping (Max) @ Ipp: Must not exceed 34.86V
• Current - Peak Pulse (10/1000µs): Minimum 12.3A
• Power - Peak Pulse: 400W
• Package / Case: DO-204AL or DO-41 axial configuration
• Mounting Type: Through Hole
• Type: Zener unidirectional TVS diode

All substitute parts listed maintain these electrical and mechanical specifications within the allowed tolerance range for direct circuit substitution.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts are active products with current manufacturing status, providing supply chain continuity for the obsolete P4KE24. The P4KE24A from Taiwan Semiconductor Corporation represents the primary direct equivalent, maintaining identical reverse standoff voltage and offering improved clamping voltage performance (33.2V versus 34.86V), which provides enhanced transient suppression characteristics.

The Micro Commercial Co variants (P4KE24A-AP, P4KE24A-BP, P4KE24A-TP) are functionally equivalent with identical electrical specifications and full temperature range support (-55 to 175°C). These parts differ only in packaging configuration (Bulk versus Tape & Reel).

The Comchip Technology P4KE24A-G variant meets all critical electrical parameters but operates within a reduced temperature range (-55 to 150°C). This part is suitable for applications not requiring the full 175°C upper temperature limit. All substitute parts maintain ROHS3 compliance or equivalent environmental standards.

Frequently Asked Questions (FAQ)

Q: Can P4KE24A parts be used as direct replacements for the obsolete P4KE24?

A: Yes. All listed P4KE24A variants meet the critical electrical specifications: 20.5V reverse standoff voltage, 400W peak pulse power, and through-hole DO-41 package configuration. The substitute parts offer improved or equivalent clamping voltage performance and active product status.

Q: What is the difference between P4KE24A-AP, P4KE24A-BP, and P4KE24A-TP?

A: These Micro Commercial Co parts are electrically identical. The suffix designates packaging configuration: -AP and -BP are supplied in Bulk packaging, while -TP is supplied in Tape & Reel format. Selection depends on procurement and assembly requirements.

Q: Is the Comchip P4KE24A-G suitable for all applications?

A: The P4KE24A-G is suitable for applications operating within -55 to 150°C. Applications requiring operation above 150°C junction temperature should use P4KE24A variants from Taiwan Semiconductor or Micro Commercial Co, which support the full -55 to 175°C range.

Q: What is the significance of the improved clamping voltage in substitute parts?

A: The substitute parts feature 33.2V maximum clamping voltage compared to 34.86V in the original P4KE24. Lower clamping voltage provides superior transient suppression, limiting voltage spikes to lower levels and improving circuit protection margins.

Q: Are all substitute parts RoHS compliant?

A: The P4KE24A-G is explicitly ROHS3 compliant. Taiwan Semiconductor and Micro Commercial Co parts maintain equivalent environmental compliance standards. Verify specific compliance documentation with your supplier for procurement requirements.