BZW04P128HE3/54 Equivalent & Substitute Parts

Part Overview

The BZW04P128HE3/54 is a unidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, part of the TransZorb® series. This component is designed for transient overvoltage protection in electronic circuits with a reverse standoff voltage of 128V and peak pulse current rating of 2A. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and component sourcing.

Key Parameters

Parameter	Value
Manufacturer Part Number	BZW04P128HE3/54
Manufacturer	Vishay General Semiconductor - Diodes Division
Category	Transient Voltage Suppressors (TVS)
Series	TransZorb®
Type	Zener
Unidirectional Channels	1
Voltage - Reverse Standoff (Typ)	128V
Voltage - Breakdown (Min)	143V
Voltage - Clamping (Max) @ Ipp	207V
Current - Peak Pulse (10/1000µs)	2A
Power - Peak Pulse	400W
Operating Temperature	-55°C ~ 175°C (TJ)
Mounting Type	Through Hole
Package / Case	DO-204AL, DO-41, Axial
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Grade	Automotive
Qualification	AEC-Q101

Substitute Part Grouping Explanation

Substitution for the BZW04P128HE3/54 is determined by strict electrical and mechanical parameter matching:

Primary Substitution Criteria:

Voltage - Reverse Standoff (Typ): 128V
Voltage - Clamping (Max) @ Ipp: 207V
Current - Peak Pulse (10/1000µs): 2A (±tolerance acceptable)
Mounting Type: Through Hole
Package / Case: DO-204AL, DO-41, or Axial equivalent
Unidirectional Channels: 1

Substitute Categories:

Direct Equivalents (Identical Electrical Parameters): Parts matching all primary criteria with identical voltage and current ratings, differing only in manufacturer, packaging format, or product status transition from obsolete to active.

Functional Equivalents (Acceptable Parameter Variance): Parts with matching voltage ratings and clamping characteristics but with minor variations in peak pulse current (within 2A range) or operating temperature range, maintaining functional compatibility in the target application.

Higher-Performance Alternatives (Enhanced Ratings): Parts with superior peak pulse current or power dissipation capabilities while maintaining the same voltage protection window, suitable for applications requiring additional margin.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Operating Temperature	Package	Product Status
BZW04P128HE3/54	Vishay General Semiconductor	128V	143V	207V	2A	400W	-55°C ~ 175°C	DO-204AL (DO-41)	Obsolete
BZW04-128-E3/54	Vishay General Semiconductor	128V	143V	207V	2A	400W	-55°C ~ 175°C	DO-204AL (DO-41)	Active
BZW04-128HE3/54	Vishay General Semiconductor	128V	143V	207V	2A	400W	-55°C ~ 175°C	DO-204AL (DO-41)	Active
P4KE150A	Taiwan Semiconductor Corporation	128V	143V	207V	2A	400W	-55°C ~ 175°C	DO-204AL (DO-41)	Active
P4KE150A-G	Comchip Technology	128V	142.5V	207V	1.93A	400W	-55°C ~ 150°C	DO-41	Active
P4KE150A-AP	Micro Commercial Co	128V	143V	207V	2A	400W	-55°C ~ 175°C	DO-41	Active
P4KE150A-B	Littelfuse Inc.	128V	143V	207V	2A	400W	-55°C ~ 175°C	DO-204AL (DO-41)	Active
P4KE150A-BP	Micro Commercial Co	128V	143V	207V	2A	400W	-55°C ~ 175°C	DO-41	Active
P4KE150A-TP	Micro Commercial Co	128V	143V	207V	2A	400W	-55°C ~ 175°C	DO-41	Active
1.5KE150A-G	Comchip Technology	128V	142.5V	207V	7.25A	1500W	-55°C ~ 150°C	DO-201AA (DO-27)	Active
P4KE160A-TP	Micro Commercial Co	136V	152V	219V	1.9A	400W	-55°C ~ 175°C	DO-41	Active

Engineering Selection Recommendations

Primary Recommendation - Direct Equivalents:

For direct replacement of the obsolete BZW04P128HE3/54, select from the active Vishay TransZorb® series variants: BZW04-128-E3/54 or BZW04-128HE3/54. Both maintain identical electrical specifications, automotive-grade qualification (AEC-Q101), and operating temperature range (-55°C ~ 175°C). These parts preserve the original design intent and certification status.

Secondary Recommendation - Cross-Manufacturer Equivalents:

The P4KE150A series from Taiwan Semiconductor Corporation, Littelfuse Inc., and Micro Commercial Co provide functionally equivalent protection with identical voltage and current ratings. P4KE150A-B from Littelfuse and P4KE150A variants from Micro Commercial Co maintain the full -55°C ~ 175°C operating range. These parts are suitable for applications where manufacturer flexibility is acceptable and ROHS3 compliance is required.

Alternative for Enhanced Performance:

The 1.5KE150A-G from Comchip Technology offers higher peak pulse current (7.25A) and power dissipation (1500W) while maintaining the same voltage protection window. This part is suitable for applications requiring additional transient energy absorption margin. Note the operating temperature range is reduced to -55°C ~ 150°C and the package changes to DO-201AA (DO-27).

Voltage Variant - Not Recommended for Direct Substitution:

The P4KE160A-TP has a higher reverse standoff voltage (136V) and clamping voltage (219V), making it unsuitable as a direct replacement for 128V protection circuits. This part is listed for reference only and should not be used without circuit redesign.

Frequently Asked Questions (FAQ)

Q: Can I use P4KE150A-G as a direct replacement for BZW04P128HE3/54?

A: P4KE150A-G is functionally compatible with identical voltage ratings (128V standoff, 207V clamping). The peak pulse current is 1.93A versus 2A, which is within acceptable tolerance. However, the operating temperature range is limited to -55°C ~ 150°C compared to the original -55°C ~ 175°C. Verify your application's maximum junction temperature requirement before selection.

Q: What is the difference between P4KE150A and P4KE150A-TP?

A: Both parts have identical electrical specifications. The suffix indicates packaging and supplier designation. P4KE150A-TP is supplied by Micro Commercial Co. Verify packaging format and lead configuration match your PCB design requirements.

Q: Why is 1.5KE150A-G listed as an alternative if it has a different package?

A: The 1.5KE150A-G provides superior transient protection (7.25A peak pulse, 1500W power) while maintaining the same voltage protection window. The package changes from DO-204AL (DO-41) to DO-201AA (DO-27), requiring PCB layout modification. This part is suitable only if your design can accommodate the larger axial package and if the enhanced protection margin is beneficial.

Q: Is P4KE160A-TP compatible with my BZW04P128HE3/54 design?

A: No. P4KE160A-TP has a higher reverse standoff voltage (136V) and clamping voltage (219V), providing protection at a different voltage level. Using this part would alter the circuit's overvoltage threshold and is not a valid substitution.

Q: Do all substitute parts meet automotive qualification requirements?

A: The Vishay BZW04 series variants (BZW04-128-E3/54, BZW04-128HE3/54) carry AEC-Q101 automotive qualification. Cross-manufacturer alternatives (P4KE series, 1.5KE series) are listed as active products with ROHS3 compliance but do not explicitly state AEC-Q101 qualification in the provided data. Verify automotive qualification status with the manufacturer if required for your application.

Q: Are all substitute parts ROHS3 compliant?

A: All listed substitute parts are ROHS3 compliant. The original BZW04P128HE3/54 is also ROHS3 compliant. REACH status is unaffected for all parts.

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