P4KE160 Equivalent & Substitute Parts

Part Overview

The P4KE160 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse, designed for general-purpose overvoltage protection applications. This component features a 136V reverse standoff voltage, 229.95V maximum clamping voltage, and 400W peak pulse power rating in a through-hole DO-204AL (DO-41) axial package. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	136V
Voltage - Breakdown (Min)	144V
Voltage - Clamping (Max) @ Ipp	229.95V
Current - Peak Pulse (10/1000µs)	1.9A
Power - Peak Pulse	400W
Operating Temperature Range	-55°C ~ 175°C (TJ)
Mounting Type	Through Hole
Package / Case	DO-204AL, DO-41, Axial
Type	Zener
Unidirectional Channels	1

Substitute Part Grouping Explanation

Substitute parts for the P4KE160 are grouped into two categories based on electrical and mechanical compatibility:

Category 1: Direct Electrical Equivalents (Same Package, Voltage Class, Power Rating) These parts maintain the 136V reverse standoff voltage, 400W power rating, and DO-204AL (DO-41) package. Clamping voltages range from 207V to 219V, which falls within acceptable operational parameters for the same voltage suppression class. Peak pulse currents range from 1.8A to 1.9A.

Key parameters for substitution: Reverse standoff voltage (136V), power rating (400W), package type (DO-204AL/DO-41), and operating temperature range (-55°C to 175°C).

Category 2: Higher Power Alternatives (Different Package, Higher Power Rating) These parts operate in higher voltage classes (145V-150V standoff) with increased power ratings (600W-1500W) and different packages (DO-201AA/DO-27). These are suitable only when circuit design permits higher voltage clamping and the larger package footprint is acceptable.

Key parameters for substitution: Voltage class compatibility, power dissipation requirements, and mechanical fit.

Parameter Comparison

Part Number	Manufacturer	Standoff Voltage (V)	Clamping Voltage (V)	Peak Pulse Current (A)	Power Rating (W)	Package	Product Status
P4KE160	Littelfuse	136	229.95	1.9	400	DO-204AL (DO-41)	Obsolete
P4KE160A	Taiwan Semiconductor Corporation	136	219	1.9	400	DO-204AL (DO-41)	Active
P4KE160A-E3/54	Vishay General Semiconductor	136	219	1.8	400	DO-204AL (DO-41)	Active
P4KE160AHE3/54	Vishay General Semiconductor	136	219	1.8	400	DO-204AL (DO-41)	Active
P4KE160A-AP	Micro Commercial Co	136	219	1.9	400	DO-204AL (DO-41)	Active
P4KE160A-BP	Micro Commercial Co	136	219	1.9	400	DO-204AL (DO-41)	Active
P4KE160A-G	Comchip Technology	136	219	1.83	400	DO-204AL (DO-41)	Active
P4KE150A-TP	Micro Commercial Co	128	207	2.0	400	DO-204AL (DO-41)	Active
1.5KE150A	Taiwan Semiconductor Corporation	128	207	7.6	1500	DO-201AA (DO-27)	Active
P6KE170A	Fairchild Semiconductor	145	234	2.6	600	DO-204AC (DO-15)	Active
1N6301A-E3/54	Vishay General Semiconductor	145	234	6.4	1500	DO-201AA (DO-27)	Active

Engineering Selection Recommendations

Primary Substitutes (Direct Replacement)

P4KE160A (Taiwan Semiconductor Corporation), P4KE160A-E3/54 (Vishay), P4KE160AHE3/54 (Vishay), P4KE160A-AP (Micro Commercial Co), P4KE160A-BP (Micro Commercial Co), and P4KE160A-G (Comchip Technology) are direct electrical and mechanical equivalents. All maintain 136V reverse standoff voltage, 400W power rating, and DO-204AL (DO-41) package configuration. All substitute parts are ROHS3 compliant with MSL rating of 1 (Unlimited). Selection among these options depends on packaging requirements (tape & reel versus bulk) and availability.

P4KE160AHE3/54 includes AEC-Q101 automotive qualification, suitable for applications requiring automotive-grade components.

Secondary Substitutes (Lower Voltage Class)

P4KE150A-TP operates at 128V reverse standoff voltage with 207V clamping voltage. This part is suitable only when the circuit design permits operation at a lower voltage class. Peak pulse current is 2.0A, maintaining the 400W power rating and DO-204AL (DO-41) package.

Higher Power Alternatives (Different Package)

1.5KE150A and 1N6301A-E3/54 provide 1500W power ratings with higher peak pulse currents (7.6A and 6.4A respectively) in DO-201AA (DO-27) packages. These are suitable only when circuit design accommodates the larger package footprint and higher power dissipation capability is required. 1N6301A-E3/54 includes AEC-Q101 automotive qualification.

P6KE170A operates at 145V reverse standoff voltage with 600W power rating in a DO-204AC (DO-15) package. This part is suitable when moderate power increase and different package form factor are acceptable.

Frequently Asked Questions (FAQ)

Q: Can P4KE160A directly replace P4KE160?

A: Yes. P4KE160A maintains identical reverse standoff voltage (136V), power rating (400W), and package type (DO-204AL/DO-41). Clamping voltage is 219V compared to 229.95V in the original part, which remains within the same voltage suppression class. All active substitute parts in the direct replacement category share these specifications.

Q: What is the difference between P4KE160A-E3/54 and P4KE160A-AP?

A: Both parts maintain 136V standoff voltage, 219V clamping voltage, and 400W power rating in DO-204AL (DO-41) packages. P4KE160A-E3/54 is manufactured by Vishay with 1.8A peak pulse current and tape & reel packaging. P4KE160A-AP is manufactured by Micro Commercial Co with 1.9A peak pulse current and bulk packaging. Selection depends on packaging format and supplier availability.

Q: When should I use P4KE150A-TP instead of P4KE160A?

A: P4KE150A-TP operates at 128V reverse standoff voltage with 207V clamping voltage, representing a lower voltage class. Use this part only when circuit design permits operation at reduced voltage levels. The 400W power rating and DO-204AL (DO-41) package remain unchanged.

Q: Are higher power alternatives like 1.5KE150A suitable direct replacements?

A: No. Higher power alternatives operate in different voltage classes and use different packages (DO-201AA/DO-27 versus DO-204AL/DO-41). These parts are suitable only when circuit design accommodates the larger package footprint and higher power dissipation capability is required. Verify mechanical fit and thermal management before selection.

Q: What does AEC-Q101 qualification mean?

A: AEC-Q101 is an automotive qualification standard. Parts with this qualification, such as P4KE160AHE3/54 and 1N6301A-E3/54, meet automotive industry reliability and quality requirements. Use these parts when automotive-grade components are specified.

Q: Are all substitute parts ROHS3 compliant?

A: All listed substitute parts are ROHS3 compliant with MSL rating of 1 (Unlimited), matching the original P4KE160 specification.

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