P6KE39A-T Equivalent & Substitute Parts

Part Overview

The P6KE39A-T is a unidirectional transient voltage suppressor (TVS) diode manufactured by Diodes Incorporated, rated for 33.3V reverse standoff voltage with a 53.9V maximum clamping voltage. This through-hole component in DO-15 package is designed for general-purpose transient protection applications. 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
Unidirectional Channels	1
Mounting Type	Through Hole
Package / Case	DO-204AC, DO-15, Axial
Operating Temperature	-55°C ~ 175°C (TJ)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the P6KE39A-T is determined by the following critical parameters:

Voltage - Reverse Standoff (Typ): 33.3V
Voltage - Clamping (Max) @ Ipp: 53.9V
Current - Peak Pulse (10/1000µs): 11.2A ± tolerance
Type: Zener, unidirectional
Mounting Type: Through Hole
Package compatibility: DO-15 or DO-204AC

Substitute parts are grouped into two categories:

Category 1: Direct Electrical Equivalents — Parts with identical or functionally equivalent voltage ratings, clamping characteristics, and peak pulse current specifications. These parts maintain the same electrical performance envelope as the original P6KE39A-T.

Category 2: Manufacturer-Recommended Alternatives — Parts with the same reverse standoff voltage (33.3V) but different clamping voltage or peak pulse current specifications. These parts require design verification for specific application requirements.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Product Status	Voltage - Reverse Standoff (Typ)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Package / Case	Operating Temperature	RoHS Status
P6KE39A-T	Diodes Incorporated	Obsolete	33.3V	53.9V	11.2A	600W	DO-204AC, DO-15, Axial	-55°C ~ 175°C	ROHS3 Compliant
P6KE39A-B	Littelfuse Inc.	Active	33.3V	53.9V	11.3A	600W	DO-204AC, DO-15, Axial	-55°C ~ 175°C	ROHS3 Compliant
P6KE39A	Taiwan Semiconductor Corporation	Active	33.3V	53.9V	11.2A	600W	DO-204AC, DO-15, Axial	-55°C ~ 175°C	ROHS3 Compliant
P6KE39A-AP	Micro Commercial Co	Active	33.3V	53.9V	11.2A	600W	DO-204AC, DO-15, Axial	-55°C ~ 175°C	Not specified
P6KE39A-BP	Micro Commercial Co	Active	33.3V	53.9V	11.2A	600W	DO-204AC, DO-15, Axial	-55°C ~ 175°C	Not specified
P6KE39A-TP	Micro Commercial Co	Active	33.3V	53.9V	11.2A	600W	DO-204AC, DO-15, Axial	-55°C ~ 175°C	ROHS3 Compliant
P6KE39A-HF	Comchip Technology	Active	33.3V	53.9V	11.13A	600W	DO-204AC, DO-15, Axial	-55°C ~ 150°C	ROHS3 Compliant
P6KE39AE3/TR13	Microsemi Corporation	Active	33.3V	53.9V	11.2A	600W	T-18, Axial	-65°C ~ 150°C	ROHS3 Compliant
BZW06-33	Taiwan Semiconductor Corporation	Active	33.3V	69.7V	57A (8/20µs)	600W	DO-204AC, DO-15, Axial	-55°C ~ 175°C	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Direct Equivalents):

P6KE39A (Taiwan Semiconductor Corporation) and P6KE39A-B (Littelfuse Inc.) are the preferred direct substitutes. Both maintain identical voltage ratings (33.3V reverse standoff, 53.9V clamping) and equivalent peak pulse current specifications. Both manufacturers are active suppliers with ROHS3 compliance and established product status.

P6KE39A-TP (Micro Commercial Co) provides an active alternative with identical electrical specifications and ROHS3 compliance, available in cut tape packaging.

Secondary Substitutes (Functionally Compatible):

P6KE39A-AP and P6KE39A-BP (Micro Commercial Co) maintain the same electrical performance envelope with automotive-grade qualification. These parts are suitable for applications requiring automotive-grade components.

P6KE39A-HF (Comchip Technology) offers equivalent clamping voltage and peak pulse current with a reduced operating temperature range (-55°C to 150°C versus -55°C to 175°C). This part is suitable for applications within the specified temperature range.

P6KE39AE3/TR13 (Microsemi Corporation) provides equivalent electrical performance in axial package format with extended low-temperature rating (-65°C minimum). This part is suitable for applications requiring axial lead configuration.

Alternative with Different Specifications:

BZW06-33 (Taiwan Semiconductor Corporation) shares the same 33.3V reverse standoff voltage but features higher clamping voltage (69.7V) and significantly higher peak pulse current (57A at 8/20µs pulse). This part is not a direct substitute and requires circuit redesign verification.

Frequently Asked Questions (FAQ)

Q: Can I use P6KE39A-B as a direct replacement for P6KE39A-T?

A: Yes. P6KE39A-B maintains the same 33.3V reverse standoff voltage, 53.9V clamping voltage, and equivalent peak pulse current (11.3A versus 11.2A). Both parts are ROHS3 compliant and rated for -55°C to 175°C operation.

Q: What is the difference between P6KE39A and P6KE39A-TP?

A: Both parts have identical electrical specifications. The difference is in packaging and supplier. P6KE39A is supplied by Taiwan Semiconductor Corporation in cut tape format, while P6KE39A-TP is supplied by Micro Commercial Co, also in cut tape format. Both are active products with ROHS3 compliance.

Q: Why is BZW06-33 listed as a manufacturer-recommended alternative if it has different specifications?

A: BZW06-33 shares the same 33.3V reverse standoff voltage but differs in clamping voltage (69.7V versus 53.9V) and peak pulse current (57A versus 11.2A). This part is suitable only for applications where higher clamping voltage and current handling are acceptable or beneficial. Circuit verification is required before substitution.

Q: Can I use P6KE39A-HF in place of P6KE39A-T?

A: P6KE39A-HF is electrically equivalent with identical voltage ratings and peak pulse current. However, its operating temperature range is limited to -55°C to 150°C compared to -55°C to 175°C for the original part. Use this substitute only if your application operates within the -55°C to 150°C range.

Q: What does the suffix in part numbers like -B, -AP, -TP, and -HF indicate?

A: These suffixes denote manufacturer-specific packaging, lead finish, or qualification variants. They do not affect the core electrical specifications. Consult individual manufacturer datasheets for packaging and handling details.

Q: Is P6KE39AE3/TR13 compatible with standard DO-15 footprints?

A: P6KE39AE3/TR13 uses axial lead configuration (T-18 package) rather than the standard DO-15 package. While electrically equivalent, it requires a different PCB footprint. Use this part only if your design accommodates axial lead components.

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