P6KE33A-T Equivalent & Substitute Parts

Part Overview

The P6KE33A-T is a transient voltage suppressor (TVS) diode manufactured by Diodes Incorporated, designed for general-purpose overvoltage protection applications. This unidirectional Zener diode operates with a reverse standoff voltage of 28.2V and provides clamping at 45.7V with a peak pulse current rating of 13.2A. The component is packaged in DO-15 (DO-204AC) through-hole format for axial mounting.

The P6KE33A-T carries an obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for systems utilizing this component.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	28.2	V
Voltage - Breakdown (Min)	31.4	V
Voltage - Clamping (Max) @ Ipp	45.7	V
Current - Peak Pulse (10/1000µs)	13.2	A
Power - Peak Pulse	600	W
Type	Zener	—
Unidirectional Channels	1	—
Mounting Type	Through Hole	—
Package / Case	DO-204AC, DO-15, Axial	—
Applications	General Purpose	—

Substitute Part Grouping Explanation

Substitute parts for the P6KE33A-T are classified based on strict electrical and mechanical parameter alignment:

Primary Substitution Criteria:

Voltage - Reverse Standoff (Typ): 28.2V
Voltage - Breakdown (Min): 31.4V
Voltage - Clamping (Max) @ Ipp: 45.7V
Current - Peak Pulse (10/1000µs): 13.2A (±0.6A tolerance acceptable)
Power - Peak Pulse: 600W
Type: Zener, Unidirectional
Mounting Type: Through Hole
Package / Case: DO-204AC or DO-15 Axial

Group 1: Direct Electrical & Mechanical Equivalents Parts meeting all primary substitution criteria with identical or compatible packaging and active product status.

Group 2: Manufacturer Variants with Minor Current Tolerance Parts with peak pulse current ratings within acceptable tolerance (13.2A ±0.6A) and identical voltage specifications.

Group 3: Alternative Package Configuration Parts with identical electrical specifications but different axial package designation (T-18 vs. DO-15).

Group 4: Enhanced Performance Variant Parts with higher clamping voltage (59V) and significantly higher peak pulse current (68A), suitable only for applications with higher transient energy requirements.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Product Status	Voltage - Reverse Standoff (V)	Voltage - Breakdown (V)	Voltage - Clamping (V)	Current - Peak Pulse (A)	Power - Peak Pulse (W)	Package	Operating Temp (°C)
P6KE33A-T	Diodes Incorporated	Obsolete	28.2	31.4	45.7	13.2	600	DO-15	—
P6KE33A	Fairchild Semiconductor	Active	28.2	31.4	45.7	13.8	600	DO-15	-50 to 175
P6KE33A-AP	Micro Commercial Co	Active	28.2	31.4	45.7	13.2	600	DO-15	-55 to 175
P6KE33A-BP	Micro Commercial Co	Active	28.2	31.4	45.7	13.2	600	DO-15	-55 to 175
P6KE33A-TP	Micro Commercial Co	Active	28.2	31.4	45.7	13.2	600	DO-15	-55 to 175
P6KE33AE3/TR13	Microsemi Corporation	Active	28.2	31.4	45.7	13.2	600	Axial	-65 to 150
BZW06-28	Taiwan Semiconductor Corporation	Active	28.2	31.4	59	68 (8/20µs)	600	DO-204AC	-55 to 175
P6KE33A-B	Littelfuse Inc.	Active	28.2	31.4	45.7	13.3	600	DO-204AC	-55 to 175
P6KE33A-HF	Comchip Technology	Active	28.2	31.4	45.7	13.13	600	DO-15	-55 to 150
P6KE33A_R2_00001	Panjit International Inc.	Active	28.2	31.4	45.7	13.2	600	DO-15	-65 to 175

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical & Mechanical Specifications):

The following parts provide direct substitution for the P6KE33A-T with active product status and full compliance certifications:

P6KE33A-TP (Micro Commercial Co): Active status, ROHS3 compliant, identical 13.2A peak pulse current, DO-15 package, operating range -55°C to 175°C
P6KE33A-AP (Micro Commercial Co): Active status, identical electrical specifications, automotive-grade component, DO-15 package
P6KE33A-BP (Micro Commercial Co): Active status, identical electrical specifications, automotive-grade component, DO-15 package
P6KE33A_R2_00001 (Panjit International Inc.): Active status, ROHS3 compliant, identical 13.2A peak pulse current, extended operating range -65°C to 175°C
P6KE33A-HF (Comchip Technology): Active status, ROHS3 compliant, 13.13A peak pulse current (within tolerance), DO-15 package

For Extended Temperature Range Applications:

P6KE33A_R2_00001 (Panjit International Inc.): Supports -65°C to 175°C operating temperature

For Alternative Package Configuration:

P6KE33AE3/TR13 (Microsemi Corporation): Identical electrical specifications, T-18 axial package variant, active status, ROHS3 compliant

For Higher Transient Energy Handling (Non-Direct Replacement):

BZW06-28 (Taiwan Semiconductor Corporation): Higher clamping voltage (59V) and peak pulse current (68A at 8/20µs), suitable only for applications requiring enhanced overvoltage protection beyond P6KE33A-T specifications

For Fairchild Semiconductor Source:

P6KE33A (Fairchild Semiconductor): Active status, 13.8A peak pulse current (within acceptable tolerance), identical voltage specifications, operating range -50°C to 175°C

Frequently Asked Questions (FAQ)

Q: Can P6KE33A-TP be used as a direct replacement for P6KE33A-T?

A: Yes. Both components share identical reverse standoff voltage (28.2V), breakdown voltage (31.4V), clamping voltage (45.7V), and peak pulse current (13.2A). Both use DO-15 through-hole packaging. P6KE33A-TP carries active product status and ROHS3 compliance.

Q: What is the difference between P6KE33A-AP, P6KE33A-BP, and P6KE33A-TP?

A: All three are manufactured by Micro Commercial Co with identical electrical specifications. The suffix indicates packaging format: -AP (Bulk), -BP (Bulk), and -TP (Cut Tape). Electrical performance is equivalent.

Q: Can BZW06-28 replace P6KE33A-T in all applications?

A: No. BZW06-28 has higher clamping voltage (59V vs. 45.7V) and significantly higher peak pulse current (68A vs. 13.2A). Use BZW06-28 only in applications requiring enhanced transient protection beyond the original design specifications.

Q: Are there temperature range differences between substitute parts?

A: Yes. Most active substitutes operate from -55°C to 175°C. P6KE33A_R2_00001 extends to -65°C minimum. P6KE33AE3/TR13 and P6KE33A-HF are limited to 150°C maximum. Verify application temperature requirements before selection.

Q: What does ROHS3 compliance mean for this component?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. All recommended substitutes carry ROHS3 certification.

Q: Is the Fairchild P6KE33A with 13.8A peak pulse current acceptable?

A: Yes. The 13.8A rating is within acceptable tolerance of the original 13.2A specification. All other electrical parameters match exactly. This part is suitable for direct replacement.

Q: What packaging options are available?

A: Primary options are DO-15 (DO-204AC) axial through-hole packages. P6KE33AE3/TR13 offers T-18 axial package variant with identical electrical specifications.

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