P4KE24C Transient Voltage Suppressor - Equivalent & Substitute Parts

Part Overview

The P4KE24C is a bidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in through-hole applications. This component operates with a 20.5V reverse standoff voltage and provides 400W peak pulse power dissipation in a DO-204AL (DO-41) axial package. The P4KE24C is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement.

Substiute Parts

P4KE24C

Littelfuse Inc.In Stock: 1133P4KE24C Datasheet

Current PartRFQ

P4KE24CA

Taiwan Semiconductor CorporationIn Stock: 30294P4KE24CA Datasheet

DirectRFQ

P4KE24CA-AP

Micro Commercial CoIn Stock: 991P4KE24CA-AP Datasheet

MFR RecommendedRFQ

P4KE24CA-BP

Micro Commercial CoIn Stock: 977P4KE24CA-BP Datasheet

MFR RecommendedRFQ

P4KE24CA-G

Comchip TechnologyIn Stock: 903P4KE24CA-G Datasheet

MFR RecommendedRFQ

P4KE24CA-TP

Micro Commercial CoIn Stock: 1269P4KE24CA-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P4KE24C are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Reverse Standoff Voltage: 20.5V (Typ)
• Breakdown Voltage (Min): 21.6V to 22.8V range
• Clamping Voltage (Max) @ Ipp: 33.2V to 34.86V range
• Peak Pulse Power: 400W
• Package/Case: DO-204AL, DO-41, Axial
• Mounting Type: Through Hole
• Bidirectional Channels: 1
• Type: Zener

All substitute parts listed maintain compatibility within these electrical specifications and physical form factor requirements. Variations in peak pulse current (12.05A to 12.6A) and operating temperature ranges are within acceptable tolerance for general-purpose TVS applications.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts are active products with current manufacturing status, addressing the obsolescence of the P4KE24C. Selection among substitutes should be based on the following criteria:

Primary Selection Criteria:

P4KE24CA (Taiwan Semiconductor Corporation) is the direct manufacturer equivalent with active product status and ROHS3 compliance matching the original specification. This part maintains identical reverse standoff voltage and offers the highest peak pulse current rating (12.6A) within the substitute group.

P4KE24CA-AP, P4KE24CA-BP, and P4KE24CA-TP (all Micro Commercial Co) are functionally equivalent alternatives with active status and REACH compliance documentation. These variants maintain the 20.5V standoff voltage and 400W power rating with 12.3A peak pulse current.

P4KE24CA-G (Comchip Technology) provides an alternative with ROHS3 compliance and REACH unaffected status. This part operates within a reduced temperature range (-55°C to 150°C) compared to other substitutes, which may be a limiting factor in high-temperature applications.

All substitute parts maintain electrical compatibility within the specified parameter ranges and preserve the through-hole DO-41 axial package form factor for direct board-level replacement.

Frequently Asked Questions (FAQ)

Q: Can P4KE24CA substitute directly for P4KE24C in existing designs?

A: Yes. P4KE24CA maintains the critical electrical parameters: 20.5V reverse standoff voltage, 400W peak pulse power, and identical DO-41 axial package. The clamping voltage is slightly lower (33.2V vs 34.86V), which provides improved protection margins in most general-purpose applications.

Q: What is the difference between P4KE24CA and the Micro Commercial variants (P4KE24CA-AP, P4KE24CA-BP, P4KE24CA-TP)?

A: All variants share the same electrical specifications and package type. The suffix designations (AP, BP, TP) indicate different manufacturing batches or packaging configurations from Micro Commercial Co. Electrical performance and pinout are identical.

Q: Why does P4KE24CA-G have a lower maximum operating temperature?

A: P4KE24CA-G from Comchip Technology is rated to 150°C (TJ) versus 175°C for other substitutes. This part remains suitable for general-purpose applications but should not be used in designs requiring operation above 150°C junction temperature.

Q: Are all substitute parts RoHS compliant?

A: P4KE24CA and P4KE24CA-G carry explicit ROHS3 compliance certification. Micro Commercial Co variants (P4KE24CA-AP, P4KE24CA-BP, P4KE24CA-TP) do not specify RoHS status in the provided data. All parts carry REACH Unaffected status where documented.

Q: What inventory availability should be considered for procurement?

A: P4KE24CA (Taiwan Semiconductor) offers the highest inventory level at 30,200 pieces. Micro Commercial variants range from 915 to 1,171 pieces. Comchip P4KE24CA-G has 796 pieces available. Procurement decisions should account for project volume requirements and supply chain lead times.

Q: Is the peak pulse current variation (12.05A to 12.6A) significant for substitution?

A: No. All variants operate within the 400W peak pulse power specification. The current variations reflect normal manufacturing tolerance across different suppliers while maintaining identical power dissipation capability for transient protection.