P6KE9V1CA TVS Diode Equivalent & Substitute Parts

Part Overview

The P6KE9V1CA is a transient voltage suppressor (TVS) diode manufactured by Diodes Incorporated, rated for 7.78V reverse standoff voltage with a 13.4V maximum clamping voltage. This component is designed for general-purpose transient protection in through-hole applications using the DO-15 package. The main 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)	7.78V
Voltage - Breakdown (Min)	8.65V
Voltage - Clamping (Max) @ Ipp	13.4V
Current - Peak Pulse (10/1000µs)	45A
Power - Peak Pulse	600W
Type	Zener
Bidirectional Channels	1
Mounting Type	Through Hole
Package / Case	DO-204AC, DO-15, Axial
Operating Temperature	-55°C ~ 175°C (TJ)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the P6KE9V1CA is determined by the following critical parameters:

Voltage - Reverse Standoff (Typ): 7.78V
Voltage - Clamping (Max) @ Ipp: 13.4V
Current - Peak Pulse (10/1000µs): 45A minimum
Power - Peak Pulse: 600W
Package / Case: DO-15 or equivalent axial through-hole package
Type: Zener TVS diode, bidirectional, single channel

Parts meeting all these criteria are classified as direct substitutes. Parts with reduced peak pulse current (31A) or different package configurations are classified as functional alternatives with design considerations.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff	Voltage - Clamping (Max)	Current - Peak Pulse	Power - Peak Pulse	Package	Product Status	Inventory
P6KE9V1CA-T	Diodes Incorporated	7.78V	13.4V	45A	600W	DO-15	Obsolete	705 Pcs
P6KE9V1CA-B	Diodes Incorporated	7.78V	13.4V	45A	600W	DO-15	Active	1170 Pcs
P6KE9.1CA-AP	Micro Commercial Co	7.78V	13.4V	45A	600W	DO-15	Active	920 Pcs
P6KE9.1CA-BP	Micro Commercial Co	7.78V	13.4V	45A	600W	DO-15	Active	1053 Pcs
P6KE9.1CA-TP	Micro Commercial Co	7.78V	13.4V	45A	600W	DO-15	Active	5041 Pcs
P6KE9V1CA	Taiwan Semiconductor Corporation	7.78V	13.4V	45A	600W	DO-15	Active	939 Pcs
P6KE9.1CA	Taiwan Semiconductor Corporation	7.78V	13.4V	47A	600W	DO-15	Active	20400 Pcs
P6KE9.1CAE3/TR13	Microsemi Corporation	7.78V	13.4V	45A	600W	Axial	Active	753 Pcs
P4KE9.1CA	Taiwan Semiconductor Corporation	7.78V	13.4V	31A	400W	DO-41	Active	820 Pcs

Engineering Selection Recommendations

Direct Substitutes (Identical Electrical and Mechanical Specifications)

P6KE9V1CA-B, P6KE9.1CA-AP, P6KE9.1CA-BP, P6KE9.1CA-TP, P6KE9V1CA, and P6KE9.1CAE3/TR13 are direct substitutes meeting all critical parameters. These parts maintain 7.78V reverse standoff voltage, 13.4V clamping voltage, and 45A peak pulse current. All are ROHS3 compliant and rated for -55°C to 175°C operation. Selection among these should prioritize product status (all active), inventory availability, and packaging preference (DO-15 or axial).

P6KE9.1CA (Taiwan Semiconductor Corporation) offers the highest inventory availability (20400 Pcs) with marginally higher peak pulse current (47A), providing additional design margin while maintaining all other specifications.

Functional Alternative with Design Considerations

P4KE9.1CA is a manufacturer-recommended alternative with reduced peak pulse current (31A) and power rating (400W), packaged in DO-41 instead of DO-15. This part is suitable only for applications where the 31A peak pulse current and 400W power dissipation are sufficient. The DO-41 package requires mechanical redesign of the PCB layout.

Frequently Asked Questions (FAQ)

Q: Can P6KE9V1CA-B directly replace the obsolete P6KE9V1CA-T?

A: Yes. Both parts share identical electrical specifications (7.78V standoff, 13.4V clamping, 45A peak pulse, 600W power) and DO-15 packaging. P6KE9V1CA-B is active production status with higher inventory availability.

Q: What is the difference between P6KE9.1CA-TP and P6KE9.1CA-AP?

A: Both parts are electrically identical with 7.78V standoff, 13.4V clamping, and 45A peak pulse current. The difference is packaging: -TP is supplied in Cut Tape (CT) format with 5041 Pcs available, while -AP is supplied in Bulk format with 920 Pcs available. Selection depends on procurement and assembly requirements.

Q: Is P6KE9.1CA a suitable replacement?

A: Yes. P6KE9.1CA maintains all critical parameters with marginally higher peak pulse current (47A vs 45A), providing additional design margin. It offers the highest inventory availability (20400 Pcs) among all substitutes.

Q: Can P4KE9.1CA replace P6KE9V1CA in all applications?

A: P4KE9.1CA is a functional alternative only for applications where 31A peak pulse current and 400W power dissipation are acceptable. The reduced current rating and different DO-41 package require design verification. This part is not a direct substitute.

Q: Are all substitute parts ROHS3 compliant?

A: All direct substitutes (P6KE9V1CA-B, P6KE9.1CA-AP, P6KE9.1CA-BP, P6KE9.1CA-TP, P6KE9V1CA, P6KE9.1CA, and P6KE9.1CAE3/TR13) are ROHS3 compliant. P4KE9.1CA compliance status is not specified in the provided data.

Q: What is the operating temperature range for these parts?

A: Direct substitutes operate across -55°C to 175°C (TJ). P6KE9.1CAE3/TR13 operates across -65°C to 150°C (TJ), providing lower minimum temperature but reduced maximum temperature. P4KE9.1CA operates across -55°C to 175°C (TJ).

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