P6KE22CA-T Equivalent & Substitute Parts

Part Overview

The P6KE22CA-T is a transient voltage suppressor (TVS) diode manufactured by Diodes Incorporated, designed for general-purpose overvoltage protection applications. This bidirectional Zener diode operates with an 18.8V reverse standoff voltage and provides 30.6V clamping at peak pulse current, delivering 600W peak pulse power dissipation in a through-hole DO-15 package.

The P6KE22CA-T is classified as obsolete. Equivalent and substitute parts from active manufacturers are available with identical or compatible electrical and mechanical specifications, enabling direct replacement in existing designs and new production applications.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	18.8V
Voltage - Breakdown (Min)	20.9V
Voltage - Clamping (Max) @ Ipp	30.6V
Current - Peak Pulse (10/1000µs)	20A
Power - Peak Pulse	600W
Operating Temperature Range	-55°C ~ 175°C (TJ)
Package / Case	DO-204AC, DO-15, Axial
Mounting Type	Through Hole
Type	Zener
Bidirectional Channels	1

Substitute Part Grouping Explanation

Substitution of the P6KE22CA-T is determined by strict equivalence across the following critical parameters:

Voltage - Reverse Standoff (Typ): 18.8V
Voltage - Breakdown (Min): 20.9V
Voltage - Clamping (Max) @ Ipp: 30.6V
Current - Peak Pulse (10/1000µs): 20A (or 19.9A within tolerance)
Power - Peak Pulse: 600W
Package / Case: DO-204AC, DO-15, or Axial
Mounting Type: Through Hole
Type: Zener
Bidirectional Channels: 1

All substitute parts listed below meet these electrical specifications and are compatible with the original part's mechanical footprint and functional requirements. Substitute parts are grouped by manufacturer and product status (Active vs. Obsolete).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Product Status	Voltage - Reverse Standoff (Typ)	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Operating Temperature	Package / Case
P6KE22CA-T	Diodes Incorporated	Obsolete	18.8V	20.9V	30.6V	20A	600W	-55°C ~ 175°C	DO-204AC, DO-15, Axial
P6KE22CA-AP	Micro Commercial Co	Active	18.8V	20.9V	30.6V	20A	600W	-55°C ~ 175°C	DO-204AC, DO-15, Axial
P6KE22CA-BP	Micro Commercial Co	Active	18.8V	20.9V	30.6V	20A	600W	-55°C ~ 175°C	DO-204AC, DO-15, Axial
P6KE22CA	Diotec Semiconductor	Active	18.8V	20.9V	30.6V	20A	600W	-50°C ~ 175°C	DO-204AC, DO-15, Axial
P6KE22CA-B	Littelfuse Inc.	Active	18.8V	20.9V	30.6V	19.9A	600W	-55°C ~ 175°C	DO-204AC, DO-15, Axial
P6KE22CA-TP	Micro Commercial Co	Active	18.8V	20.9V	30.6V	20A	600W	-55°C ~ 175°C	DO-204AC, DO-15, Axial
P6KE22CAE3/TR13	Microsemi Corporation	Active	18.8V	20.9V	30.6V	20A	600W	-65°C ~ 150°C	T-18, Axial
TP6KE22CA	Littelfuse Inc.	Active	18.8V	20.9V	30.6V	19.9A	600W	-55°C ~ 175°C	DO-204AC, DO-15, Axial

Engineering Selection Recommendations

All substitute parts listed are electrically equivalent to the P6KE22CA-T and support direct replacement. Selection among active alternatives should prioritize the following factors:

Product Status: All substitute parts carry Active product status, ensuring ongoing availability and manufacturing support. The original P6KE22CA-T is Obsolete.

Compliance & Certifications: All substitute parts are ROHS3 Compliant and carry EAR99 ECCN classification. Parts from Littelfuse (TP6KE22CA, P6KE22CA-B) include AEC-Q101 automotive qualification and Moisture Sensitivity Level 1 (Unlimited). Parts from Micro Commercial Co (P6KE22CA-AP, P6KE22CA-BP, P6KE22CA-TP) are rated for automotive applications.

Operating Temperature Range: Most substitutes support -55°C ~ 175°C. The Diotec Semiconductor P6KE22CA operates from -50°C ~ 175°C. The Microsemi P6KE22CAE3/TR13 operates from -65°C ~ 150°C and may be selected for extended low-temperature applications or where the upper temperature limit of 150°C is acceptable.

Package Considerations: The Microsemi P6KE22CAE3/TR13 uses T-18 Axial packaging, while all other substitutes use DO-204AC or DO-15 packaging. Verify PCB footprint compatibility before selection.

Current Rating: The Littelfuse parts (P6KE22CA-B, TP6KE22CA) specify 19.9A peak pulse current, which is within tolerance of the 20A specification. All other substitutes specify 20A.

Frequently Asked Questions (FAQ)

Q: Can P6KE22CA-T be directly replaced with any of the listed substitutes?

A: Yes. All listed substitute parts meet the electrical specifications (18.8V reverse standoff, 20.9V breakdown minimum, 30.6V clamping maximum, 600W peak pulse power) and are compatible with through-hole DO-15 or equivalent axial packaging. Verify PCB footprint compatibility, particularly for the Microsemi part which uses T-18 Axial packaging.

Q: What is the difference between P6KE22CA-AP, P6KE22CA-BP, and P6KE22CA-TP from Micro Commercial Co?

A: All three parts from Micro Commercial Co are electrically identical and meet the same specifications. The suffix designations (-AP, -BP, -TP) indicate different packaging or distribution channels. Selection among these variants should be based on availability and packaging preference (Bulk vs. Cut Tape).

Q: Are the Littelfuse parts (P6KE22CA-B, TP6KE22CA) suitable replacements despite the 19.9A current rating?

A: Yes. The 19.9A peak pulse current specification is within the tolerance band of the 20A requirement and meets the functional requirements of the P6KE22CA-T. Both Littelfuse parts include AEC-Q101 automotive qualification, making them suitable for automotive and industrial applications.

Q: Which substitute offers the widest operating temperature range?

A: The Microsemi P6KE22CAE3/TR13 extends the low-temperature operating range to -65°C. However, its upper temperature limit is 150°C, compared to 175°C for most other substitutes. Select based on your specific temperature requirements.

Q: Does package selection affect electrical performance?

A: No. The DO-204AC, DO-15, and T-18 Axial packages are mechanically different but electrically equivalent for this TVS diode. Package selection is determined by PCB layout and footprint availability. Verify your PCB design supports the selected package before procurement.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 Compliant, meeting environmental and regulatory requirements for electronics manufacturing.

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