P6KE39CA-T Equivalent & Substitute Parts

Part Overview

The P6KE39CA-T is a transient voltage suppressor (TVS) diode manufactured by Diodes Incorporated, designed for general-purpose overvoltage protection in through-hole applications. This component features a 33.3V reverse standoff voltage with a 53.9V clamping voltage and 11.2A peak pulse current capability in a DO-15 package. The part is currently obsolete, making equivalent substitutes necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	33.3V
Voltage - Breakdown (Min)	37.1V
Voltage - Clamping (Max) @ Ipp	53.9V
Current - Peak Pulse (10/1000µs)	11.2A
Power - Peak Pulse	600W
Type	Zener
Bidirectional Channels	1
Mounting Type	Through Hole
Package / Case	DO-204AC, DO-15, Axial
Operating Temperature	-55°C ~ 175°C (TJ)

Substitute Part Grouping Explanation

Substitution eligibility for the P6KE39CA-T is determined by the following critical parameters:

Voltage - Reverse Standoff: 33.3V (±tolerance)
Voltage - Clamping (Max) @ Ipp: 53.9V (±tolerance)
Current - Peak Pulse (10/1000µs): 11.2A minimum
Power - Peak Pulse: 600W
Package / Case: DO-15 or DO-204AC (equivalent mechanical form factors)
Mounting Type: Through Hole
Type: Zener, Bidirectional

All substitute parts listed maintain these electrical specifications within acceptable engineering tolerances and are mechanically compatible with the original DO-15 footprint.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Operating Temperature	Product Status	Package
P6KE39CA-T	Diodes Incorporated	33.3V	53.9V	11.2A	600W	-55°C ~ 175°C	Obsolete	DO-15
P6KE39CA-B	Littelfuse Inc.	33.3V	53.9V	11.3A	600W	-55°C ~ 175°C	Active	DO-204AC (DO-15)
P6KE39CA-AP	Micro Commercial Co	33.3V	53.9V	11.2A	600W	-55°C ~ 175°C	Active	DO-15
P6KE39CA-BP	Micro Commercial Co	33.3V	53.9V	11.2A	600W	-55°C ~ 175°C	Active	DO-15
P6KE39CA-TP	Micro Commercial Co	33.3V	53.9V	11.2A	600W	-55°C ~ 175°C	Active	DO-15
BZW06-33B	Diotec Semiconductor	33.3V	53.9V	11.1A	600W	-50°C ~ 175°C	Active	DO-15 (DO-204AC)
P6KE39CA	Fairchild Semiconductor	Not specified	Not specified	Not specified	Not specified	Not specified	Active	Not specified
P6KE39CAE3/TR13	Microsemi Corporation	33.3V	53.9V	11.2A	600W	-65°C ~ 150°C	Active	Axial
TP6KE39CA	Littelfuse	33.3V	53.9V	11.3A	600W	-55°C ~ 175°C	Active	DO-204AC (DO-15)

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

P6KE39CA-B, P6KE39CA-AP, P6KE39CA-BP, and P6KE39CA-TP are direct electrical and mechanical equivalents with active product status. These parts maintain identical voltage specifications and current ratings. Selection among these variants depends on packaging format requirements: bulk packaging (P6KE39CA-AP, P6KE39CA-BP) or cut tape (P6KE39CA-TP, P6KE39CA-B).

Secondary Substitutes (Minor Variations):

BZW06-33B from Diotec Semiconductor meets all electrical specifications with a marginal reduction in peak pulse current (11.1A vs. 11.2A) and a lower minimum operating temperature (-50°C vs. -55°C). This part is suitable for applications where the lower temperature limit is acceptable.

TP6KE39CA from Littelfuse provides automotive-grade qualification (AEC-Q101) with identical electrical performance, suitable for automotive or high-reliability applications.

P6KE39CAE3/TR13 from Microsemi Corporation is available in axial package format with extended lower operating temperature range (-65°C), appropriate for applications requiring alternative mechanical form factors or enhanced cold-temperature performance.

Fairchild Semiconductor P6KE39CA:

This part number lacks complete specification data in the provided documentation and should be cross-referenced with current datasheets before selection.

Frequently Asked Questions (FAQ)

Q: Can I substitute P6KE39CA-T with any of the listed alternatives without circuit modification?

A: Yes, all listed substitutes maintain the critical electrical parameters (33.3V standoff, 53.9V clamping, 600W peak power) and are mechanically compatible with DO-15 footprints. No circuit modifications are required for direct substitution.

Q: What is the difference between P6KE39CA-B, P6KE39CA-AP, P6KE39CA-BP, and P6KE39CA-TP?

A: These parts are electrically identical. The suffix designates packaging format: -B and -TP are cut tape, -AP and -BP are bulk. Selection depends on procurement and assembly requirements.

Q: Is BZW06-33B a suitable replacement?

A: BZW06-33B is electrically compatible with a peak pulse current of 11.1A (0.1A lower than the original 11.2A) and a minimum operating temperature of -50°C (5°C higher than the original -55°C). It is suitable for applications within these thermal and current constraints.

Q: Can I use the axial package variant P6KE39CAE3/TR13?

A: P6KE39CAE3/TR13 is electrically equivalent but uses an axial package instead of DO-15. This substitution requires PCB layout modification to accommodate the different mechanical form factor.

Q: Are all substitutes RoHS3 compliant?

A: P6KE39CA-B, P6KE39CA-TP, P6KE39CAE3/TR13, and TP6KE39CA are confirmed RoHS3 compliant. BZW06-33B compliance status is not specified in the provided data. Verify compliance requirements with your specific application standards.

Q: Which substitute offers automotive qualification?

A: TP6KE39CA from Littelfuse carries AEC-Q101 automotive qualification, making it the preferred choice for automotive applications requiring certified components.

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