P6KE20CA-T Equivalent & Substitute Parts

Part Overview

The P6KE20CA-T is a transient voltage suppressor (TVS) diode manufactured by Diodes Incorporated, designed for general-purpose overvoltage protection in through-hole applications. This component features a 17.1V reverse standoff voltage, 27.7V maximum clamping voltage, and 22A peak pulse current capability in a DO-15 axial package. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	P6KE20CA-T
Manufacturer	Diodes Incorporated
Category	Transient Voltage Suppressors (TVS)
Type	Zener
Voltage - Reverse Standoff (Typ)	17.1V
Voltage - Breakdown (Min)	19V
Voltage - Clamping (Max) @ Ipp	27.7V
Current - Peak Pulse (10/1000µs)	22A
Power - Peak Pulse	600W
Package / Case	DO-204AC, DO-15, Axial
Mounting Type	Through Hole
Operating Temperature	-55°C ~ 175°C (TJ)
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the P6KE20CA-T is determined by matching the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - Reverse Standoff (Typ): 17.1V
Voltage - Clamping (Max) @ Ipp: 27.7V
Current - Peak Pulse (10/1000µs): 22A
Power - Peak Pulse: 600W
Package / Case: DO-15 or DO-204AC (axial through-hole)
Mounting Type: Through Hole
Type: Zener TVS Diode

Substitute Categories:

Category 1: Direct Electrical & Package Equivalents (Active Status) Parts matching all primary electrical parameters and DO-15/DO-204AC packaging with active product status:

P6KE20CA (Fairchild Semiconductor)
P6KE20CA-TP (Micro Commercial Co)
P6KE20CA-AP (Micro Commercial Co)
P6KE20CA-BP (Micro Commercial Co)
P6KE20CAE3/TR13 (Microsemi Corporation)

Category 2: Alternative Voltage Rating Substitutes (Recommended by Manufacturer) Parts with different voltage ratings but same power class and through-hole packaging, suitable for applications with lower voltage transient requirements:

1.5KE18CA-AP (Micro Commercial Co)
1.5KE18CA-E3/51 (Vishay General Semiconductor)
1.5KE18CA-G (Comchip Technology)
1.5KE18CA-HF (Comchip Technology)
1.5KE18CA-TP (Micro Commercial Co)

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Package / Case	Operating Temperature	Product Status
P6KE20CA-T	Diodes Incorporated	17.1V	27.7V	22A	600W	DO-15, Axial	-55°C ~ 175°C	Obsolete
P6KE20CA	Fairchild Semiconductor	17.1V	27.7V	22A	600W	DO-15, Axial	-50°C ~ 175°C	Active
P6KE20CA-TP	Micro Commercial Co	17.1V	27.7V	22A	600W	DO-15, Axial	-55°C ~ 175°C	Active
P6KE20CA-AP	Micro Commercial Co	17.1V	27.7V	22A	600W	DO-15, Axial	-55°C ~ 175°C	Active
P6KE20CA-BP	Micro Commercial Co	17.1V	27.7V	22A	600W	DO-15, Axial	-55°C ~ 175°C	Active
P6KE20CAE3/TR13	Microsemi Corporation	17.1V	27.7V	22A	600W	T-18, Axial	-65°C ~ 150°C	Active
1.5KE18CA-AP	Micro Commercial Co	15.3V	25.2V	60.3A	1500W	DO-201AE, Axial	-55°C ~ 175°C	Active
1.5KE18CA-E3/51	Vishay General Semiconductor	15.3V	25.2V	59.5A	1500W	DO-201AA, Axial	-55°C ~ 175°C	Obsolete
1.5KE18CA-G	Comchip Technology	15.3V	25.2V	59.52A	1500W	DO-201, Axial	-55°C ~ 150°C	Active
1.5KE18CA-HF	Comchip Technology	15.3V	25.2V	59.52A	1500W	DO-201, Axial	-55°C ~ 150°C	Active
1.5KE18CA-TP	Micro Commercial Co	15.3V	25.2V	60.3A	1500W	DO-201AE, Axial	-55°C ~ 175°C	Active

Engineering Selection Recommendations

For Direct Replacement (Same Electrical Specifications):

Select from P6KE20CA-TP, P6KE20CA-AP, P6KE20CA-BP, or P6KE20CA (all active status). These parts maintain identical voltage ratings (17.1V standoff, 27.7V clamping) and current handling (22A peak pulse). P6KE20CA-TP is recommended as the primary choice due to active product status, ROHS3 compliance, and cut tape packaging matching the original P6KE20CA-T specification. P6KE20CA from Fairchild Semiconductor offers the largest inventory availability (38,300 pcs) with active status, though operating temperature range is slightly reduced (-50°C minimum vs. -55°C).

For Alternative Voltage Applications:

The 1.5KE18CA series (1.5KE18CA-AP, 1.5KE18CA-G, 1.5KE18CA-HF, 1.5KE18CA-TP) provides lower voltage protection (15.3V standoff, 25.2V clamping) with significantly higher current capacity (59.5–60.3A) and power dissipation (1500W). These are suitable only for applications requiring lower voltage thresholds. All active-status variants maintain ROHS3 compliance and -55°C to 175°C operating range (except Comchip variants at -55°C to 150°C).

Compliance Considerations:

All recommended substitutes maintain ROHS3 compliance and EAR99 export classification. Moisture sensitivity level remains MSL 1 (Unlimited) across all variants. For automotive-grade applications, P6KE20CA-AP and P6KE20CA-BP from Micro Commercial Co are designated as automotive-grade components.

Frequently Asked Questions (FAQ)

Q: Can I use P6KE20CA-TP as a direct replacement for P6KE20CA-T?

A: Yes. P6KE20CA-TP matches all critical electrical parameters (17.1V standoff, 27.7V clamping, 22A peak pulse, 600W power) and packaging (DO-15 axial through-hole). The part is active status with ROHS3 compliance and identical operating temperature range (-55°C to 175°C).

Q: What is the difference between P6KE20CA variants (TP, AP, BP)?

A: The variants differ in packaging format and application designation. TP indicates cut tape packaging (suitable for automated assembly), AP and BP indicate bulk packaging. All three maintain identical electrical specifications and are manufactured by Micro Commercial Co with active product status.

Q: Can I substitute a 1.5KE18CA series part for the P6KE20CA-T?

A: Only if your application permits lower voltage protection. The 1.5KE18CA series has a 15.3V standoff voltage (vs. 17.1V) and 25.2V clamping voltage (vs. 27.7V). However, it provides higher current capacity (60.3A vs. 22A) and power dissipation (1500W vs. 600W). This substitution is suitable for lower-voltage transient environments but not for circuits requiring the original 17.1V protection threshold.

Q: Why is P6KE20CAE3/TR13 listed as a substitute if it uses a different package (T-18)?

A: P6KE20CAE3/TR13 maintains identical electrical specifications and through-hole axial mounting, making it electrically equivalent. However, the T-18 package differs from DO-15, requiring PCB layout verification before substitution. Operating temperature range is also reduced (-65°C to 150°C vs. -55°C to 175°C).

Q: Are all substitute parts ROHS3 compliant?

A: All active-status P6KE20CA variants are ROHS3 compliant. The 1.5KE18CA-E3/51 (Vishay) is also ROHS3 compliant but is obsolete status. Comchip variants (1.5KE18CA-G, 1.5KE18CA-HF) are ROHS3 compliant and active status.

Q: What is the inventory status for these substitutes?

A: P6KE20CA (Fairchild) has the highest availability at 38,300 pcs. P6KE20CA-TP (Micro Commercial Co) has 5,009 pcs. All 1.5KE18CA variants have 773–2,240 pcs in stock. Verify current inventory with your supplier before final procurement decisions.

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