P4KE22C Equivalent & Substitute Parts

Part Overview

The P4KE22C 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 reverse standoff voltage of 18.8V and provides 400W peak pulse power dissipation in a DO-204AL (DO-41) axial package. The P4KE22C is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Substitute parts maintain the same electrical performance envelope while offering active product status and improved availability.

Substiute Parts

P4KE22C

Littelfuse Inc.In Stock: 805P4KE22C Datasheet

Current PartRFQ

P4KE22CA

Taiwan Semiconductor CorporationIn Stock: 10488P4KE22CA Datasheet

DirectRFQ

P4KE22CA-AP

Micro Commercial CoIn Stock: 980P4KE22CA-AP Datasheet

MFR RecommendedRFQ

P4KE22CA-BP

Micro Commercial CoIn Stock: 855P4KE22CA-BP Datasheet

MFR RecommendedRFQ

P4KE22CA-G

Comchip TechnologyIn Stock: 734P4KE22CA-G Datasheet

MFR RecommendedRFQ

P4KE22CA-TP

Micro Commercial CoIn Stock: 5317P4KE22CA-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P4KE22C is determined by strict electrical and mechanical parameter matching within the P4KE series. All substitute parts must maintain:

• Reverse standoff voltage of 18.8V (Typ)
• Breakdown voltage minimum of 19.8V or higher
• Clamping voltage maximum at or below 32.13V @ Ipp
• Peak pulse current capability of 13.4A or greater
• Peak pulse power rating of 400W
• DO-204AL (DO-41) axial through-hole package
• Bidirectional single-channel configuration
• Zener diode type classification
• Operating temperature range of -55°C to 175°C or equivalent

The substitute parts listed below meet these criteria and are sourced from qualified manufacturers including Taiwan Semiconductor Corporation, Micro Commercial Co, and Comchip Technology. All substitutes share the P4KE22 base product number, confirming electrical equivalence within the series specification.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts are active products with confirmed availability, addressing the obsolescence status of the P4KE22C. Selection among substitutes should be based on the following criteria:

P4KE22CA (Taiwan Semiconductor Corporation) offers the highest peak pulse current rating at 13.7A with ROHS3 compliance and active product status. This part is available in Tape & Reel packaging with 10,400 units in stock, providing the largest inventory buffer for production requirements.

P4KE22CA-AP, P4KE22CA-BP, and P4KE22CA-TP (Micro Commercial Co) maintain identical electrical specifications with 13.4A peak pulse current and 400W power rating. All three variants are active products with REACH compliance. P4KE22CA-TP offers the highest inventory level at 5,300 units. These parts are supplied in bulk packaging.

P4KE22CA-G (Comchip Technology) operates within a reduced temperature range of -55°C to 150°C, compared to the standard -55°C to 175°C specification. This part is suitable for applications not requiring the extended upper temperature limit. It maintains ROHS3 compliance and REACH compliance status with 626 units available.

All substitute parts maintain the critical electrical parameters: 18.8V reverse standoff voltage, 400W peak pulse power, and DO-41 through-hole package compatibility. Clamping voltage performance is improved across all substitutes at 30.6V maximum, compared to the original 32.13V specification.

Frequently Asked Questions (FAQ)

Q: Can P4KE22CA substitute directly for P4KE22C in existing designs?

A: Yes. The P4KE22CA maintains the same reverse standoff voltage (18.8V), peak pulse power (400W), and DO-41 package configuration. The improved clamping voltage (30.6V vs. 32.13V) provides superior transient suppression performance. Direct board-level substitution is electrically compatible.

Q: What is the difference between P4KE22CA and the Micro Commercial Co variants (P4KE22CA-AP, P4KE22CA-BP, P4KE22CA-TP)?

A: All Micro Commercial Co variants share identical electrical specifications with 13.4A peak pulse current and 30.6V clamping voltage. The suffix designations (AP, BP, TP) indicate different packaging or distribution channels. Electrical performance is equivalent across all three variants.

Q: Why does P4KE22CA-G have a lower maximum operating temperature?

A: The P4KE22CA-G from Comchip Technology operates to 150°C maximum junction temperature, compared to 175°C for other substitutes. This part is suitable for applications with thermal operating limits below 150°C. If your design requires operation above 150°C, select an alternative substitute with the full -55°C to 175°C range.

Q: Are all substitute parts RoHS compliant?

A: P4KE22CA and P4KE22CA-G are confirmed ROHS3 compliant. Micro Commercial Co variants (P4KE22CA-AP, P4KE22CA-BP, P4KE22CA-TP) do not specify RoHS status in the provided data. Confirm RoHS compliance requirements with your supplier if this certification is mandatory for your application.

Q: What packaging options are available for these substitutes?

A: P4KE22CA is supplied in Tape & Reel (TR) packaging. All Micro Commercial Co variants (P4KE22CA-AP, P4KE22CA-BP, P4KE22CA-TP) and Comchip P4KE22CA-G are supplied in bulk packaging. Select based on your production volume and assembly process requirements.

Q: Is the improved clamping voltage (30.6V vs. 32.13V) beneficial for my application?

A: Lower clamping voltage provides faster transient suppression and reduced voltage overshoot at the protected circuit node. This is generally advantageous for sensitive electronics. Verify that your circuit design tolerates the lower clamping voltage threshold before substitution.