P4KE15A-TP Equivalent & Substitute Parts

Part Overview

The P4KE15A-TP is a transient voltage suppressor (TVS) diode manufactured by Micro Commercial Co, designed for general-purpose overvoltage protection applications. This unidirectional Zener diode features a 12.8V reverse standoff voltage with a 21.2V maximum clamping voltage and 19.3A peak pulse current capability in a through-hole DO-41 package. The part is actively produced and ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to availability constraints, supply chain considerations, or packaging preferences.

Substiute Parts

P4KE15A-TP

Micro Commercial CoIn Stock: 1144P4KE15A-TP Datasheet

Current PartRFQ

P4KE15A

Taiwan Semiconductor CorporationIn Stock: 300472P4KE15A Datasheet

DirectRFQ

P4KE15A-B

LittelfuseIn Stock: 1826P4KE15A-B Datasheet

DirectRFQ

1.5KE16A

Taiwan Semiconductor CorporationIn Stock: 3001841.5KE16A Datasheet

SimilarRFQ

P6KE15A

Fairchild SemiconductorIn Stock: 35449P6KE15A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P4KE15A-TP are classified into two categories based on electrical and mechanical compatibility:

Direct Substitutes maintain identical electrical specifications (12.8V standoff, 21.2V clamping, 400W peak power) and compatible through-hole axial packaging. These parts are interchangeable in circuit applications with equivalent performance characteristics.

Similar Substitutes share the same voltage class and general-purpose TVS application but differ in peak pulse current capability, power dissipation, or package form factor. Selection of similar substitutes requires verification that the application can accommodate the specified parameter variations.

The substitution criteria are based on:

• Voltage - Reverse Standoff (Typ): 12.8V or 13.6V
• Voltage - Clamping (Max) @ Ipp: 21.2V or 22.5V
• Power - Peak Pulse: 400W, 600W, or 1500W
• Mounting Type: Through Hole
• Package compatibility: DO-41, DO-204AL, DO-204AC, or DO-201

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (Recommended for Pin-Compatible Replacement):

P4KE15A (Taiwan Semiconductor Corporation) and P4KE15A-B (Littelfuse) are direct electrical equivalents with identical standoff and clamping voltages. Both parts are ROHS3 compliant and actively produced. P4KE15A-B matches the original peak pulse current specification (19.3A) exactly. P4KE15A provides marginally higher peak pulse current (20A) within the same 400W power envelope. Both are available in DO-204AL (DO-41) through-hole packages compatible with P4KE15A-TP footprints.

Similar Substitutes (Application-Dependent Selection):

P6KE15A (Fairchild Semiconductor) maintains identical voltage specifications but provides increased peak pulse current (29A) and power dissipation (600W) in a DO-15 (DO-204AC) package. This part is suitable for applications requiring higher transient energy absorption while maintaining the same voltage protection level.

1.5KE16A (Taiwan Semiconductor Corporation) represents a higher-power alternative with increased standoff voltage (13.6V), clamping voltage (22.5V), peak pulse current (70A), and power dissipation (1500W) in a DO-201 package. This part is applicable only when the circuit design accommodates the elevated voltage specifications.

All substitute parts maintain ROHS3 compliance and are actively produced with established supply availability.

Frequently Asked Questions (FAQ)

Q: Can P4KE15A replace P4KE15A-TP directly on the PCB?

A: Yes. P4KE15A from Taiwan Semiconductor Corporation is a direct electrical equivalent with identical 12.8V standoff and 21.2V clamping voltages. Both parts use compatible through-hole axial packaging (DO-41/DO-204AL) and are pin-compatible for circuit board replacement.

Q: What is the difference between P4KE15A-B and P4KE15A-TP?

A: P4KE15A-B (Littelfuse) matches P4KE15A-TP in all critical electrical parameters: 12.8V standoff, 21.2V clamping, 19.3A peak pulse current, and 400W power dissipation. The primary difference is manufacturer and packaging format (Bulk vs. Tape & Reel). Both are through-hole axial devices with identical circuit performance.

Q: When should P6KE15A be used instead of P4KE15A-TP?

A: P6KE15A is selected when the application requires higher transient energy absorption capability. It maintains the same 12.8V standoff and 21.2V clamping voltages but provides 29A peak pulse current and 600W power dissipation compared to 19.3A and 400W for P4KE15A-TP. The DO-15 package footprint must be compatible with the circuit board layout.

Q: Is 1.5KE16A compatible with P4KE15A-TP circuits?

A: 1.5KE16A is not a direct substitute. It features higher standoff voltage (13.6V vs. 12.8V) and clamping voltage (22.5V vs. 21.2V), which may alter circuit protection thresholds. This part is suitable only when the circuit design explicitly accommodates these elevated voltage specifications. The DO-201 package also differs from the DO-41 form factor.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. P4KE15A, P4KE15A-B, 1.5KE16A, and P6KE15A are all ROHS3 compliant and meet equivalent environmental and regulatory requirements as P4KE15A-TP.

Q: What packaging formats are available for these TVS diodes?

A: P4KE15A-TP and direct substitutes use DO-41 (DO-204AL) through-hole axial packages. P6KE15A uses DO-15 (DO-204AC) axial packaging. 1.5KE16A uses DO-201 (DO-27) axial packaging. All are through-hole components suitable for conventional PCB assembly.