P6KE20A-T Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The P6KE20A-T is a unidirectional transient voltage suppressor diode manufactured by Diodes Incorporated, designed for general-purpose overvoltage protection applications. This component features a 17.1V reverse standoff voltage with a 27.7V maximum clamping voltage and 22A peak pulse current capability in a DO-15 through-hole axial package. The product is currently classified as obsolete, necessitating identification of active equivalent and substitute components to maintain design continuity and ensure supply chain availability for new production and field replacements.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	17.1	V
Voltage - Breakdown (Min)	19	V
Voltage - Clamping (Max) @ Ipp	27.7	V
Current - Peak Pulse (10/1000µs)	22	A
Power - Peak Pulse	600	W
Type	Zener	—
Unidirectional Channels	1	—
Mounting Type	Through Hole	—
Package / Case	DO-204AC, DO-15, Axial	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the P6KE20A-T are categorized into two distinct groups based on electrical and mechanical compatibility:

Group 1: Direct Electrical Equivalents (Same Package, Same Power Rating) These parts maintain identical electrical specifications: 17.1V reverse standoff voltage, 19V minimum breakdown voltage, 27.7V maximum clamping voltage, 22A peak pulse current, and 600W peak pulse power. All components in this group use DO-15 through-hole axial packaging and are suitable for direct pin-for-pin replacement. Substitution is determined by matching these core electrical parameters and package type.

Group 2: Higher Power Rating Alternatives (Different Package, Enhanced Capability) These parts provide higher peak pulse current (60A) and increased power dissipation (1500W) while maintaining compatible voltage characteristics within acceptable operating ranges. These components use DO-201 through-hole axial packaging and are physically larger, requiring board layout modifications. Substitution is appropriate when enhanced transient protection capability is required or when DO-15 components are unavailable.

Parameter Comparison

Part Number	Manufacturer	Product Status	Vwm (Typ) V	Vbr (Min) V	Vc (Max) V	Ipp (10/1000µs) A	Ppk W	Package	Operating Temp °C
P6KE20A-T	Diodes Incorporated	Obsolete	17.1	19	27.7	22	600	DO-15	—
P6KE20A	Fairchild Semiconductor	Active	17.1	19	27.7	22	600	DO-15	-50 to 175
P6KE20A-AP	Micro Commercial Co	Active	17.1	19	27.7	22	600	DO-15	-55 to 175
P6KE20A-BP	Micro Commercial Co	Active	17.1	19	27.7	22	600	DO-15	-55 to 175
P6KE20AE3/TR13	Microsemi Corporation	Active	17.1	19	27.7	22	600	Axial	-65 to 150
1.5KE18A	Taiwan Semiconductor Corporation	Active	15.3	17.1	25.5	60	1500	DO-201	-55 to 175
1.5KE18A-B	Littelfuse Inc.	Active	15.3	17.1	25.2	60.3	1500	DO-201	-55 to 175
1.5KE18A-G	Comchip Technology	Active	15.3	17.1	25.2	59.52	1500	DO-201	-55 to 150
1.5KE18A-HF	Comchip Technology	Active	15.3	17.1	25.2	59.52	1500	DO-201	-55 to 150
1.5KE18A-TP	Micro Commercial Co	Active	15.3	17.1	25.2	60.3	1500	DO-201	-55 to 175

Engineering Selection Recommendations

For Direct Replacement (DO-15 Package, 600W Rating): Select P6KE20A from Fairchild Semiconductor, P6KE20A-AP or P6KE20A-BP from Micro Commercial Co, or P6KE20AE3/TR13 from Microsemi Corporation. All maintain identical electrical specifications to the obsolete P6KE20A-T and are classified as active products with current manufacturing support. These components are ROHS3 compliant and suitable for applications requiring the original 22A peak pulse current and 600W power dissipation in standard DO-15 axial through-hole packaging.

For Enhanced Protection (DO-201 Package, 1500W Rating): Select 1.5KE18A-series components from Taiwan Semiconductor Corporation, Littelfuse Inc., Comchip Technology, or Micro Commercial Co when increased transient protection capability is required. These parts provide 60A peak pulse current and 1500W power dissipation, offering superior overvoltage suppression margin. The 1.5KE18A series operates at a lower reverse standoff voltage (15.3V) compared to the P6KE20A-T (17.1V), resulting in earlier clamping action and enhanced protection. Board layout modification is necessary to accommodate the larger DO-201 package. All 1.5KE18A variants are active products with ROHS3 compliance.

Compliance Considerations: All recommended substitutes maintain ROHS3 compliance and are manufactured by established semiconductor suppliers with active product status, ensuring long-term availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can P6KE20A-series parts directly replace the obsolete P6KE20A-T? A: Yes. P6KE20A variants from Fairchild Semiconductor, Micro Commercial Co, and Microsemi Corporation provide identical electrical specifications (17.1V standoff, 27.7V clamping, 22A peak pulse) and DO-15 axial through-hole packaging, enabling direct pin-for-pin substitution without circuit modification.

Q: What is the difference between P6KE20A and 1.5KE18A series substitutes? A: The P6KE20A maintains the original 600W power rating and 22A peak pulse current in DO-15 packaging. The 1.5KE18A series provides enhanced protection with 1500W power rating and 60A peak pulse current in the larger DO-201 package. The 1.5KE18A operates at a lower reverse standoff voltage (15.3V vs. 17.1V), providing earlier transient suppression. Selection depends on whether the application requires equivalent performance or enhanced protection capability.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All recommended P6KE20A and 1.5KE18A variants listed are ROHS3 compliant, meeting environmental and regulatory requirements for current manufacturing standards.

Q: Can 1.5KE18A parts be used as drop-in replacements for P6KE20A-T? A: No. The 1.5KE18A series uses DO-201 through-hole axial packaging, which is physically larger than the DO-15 package of the P6KE20A-T. Board layout modification is required. Additionally, the lower reverse standoff voltage (15.3V vs. 17.1V) changes the circuit protection characteristics. Use 1.5KE18A only when enhanced protection capability is required and board redesign is feasible.

Q: Which manufacturers provide active P6KE20A equivalents? A: Fairchild Semiconductor, Micro Commercial Co (P6KE20A-AP and P6KE20A-BP variants), and Microsemi Corporation (P6KE20AE3/TR13) all manufacture active P6KE20A equivalents with current production support.

Q: What operating temperature ranges are available for substitute parts? A: P6KE20A variants operate from -50°C to 175°C (Fairchild) or -55°C to 175°C (Micro Commercial Co and Microsemi). The 1.5KE18A series operates from -55°C to 175°C (Taiwan Semiconductor, Littelfuse, and Micro Commercial Co) or -55°C to 150°C (Comchip Technology). Select based on application temperature requirements.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message