P6KE47CA-T Equivalent & Substitute Parts

Part Overview

The P6KE47CA-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 40.2V reverse standoff voltage with 64.8V clamping capability and 9.3A peak pulse current handling. The part is currently classified as obsolete, making equivalent substitutes necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	40.2V
Voltage - Breakdown (Min)	44.7V
Voltage - Clamping (Max) @ Ipp	64.8V
Current - Peak Pulse (10/1000µs)	9.3A
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 P6KE47CA-T is determined by strict electrical and mechanical parameter matching:

Critical Matching Parameters:

Voltage - Reverse Standoff (Typ): 40.2V
Voltage - Breakdown (Min): 44.7V
Voltage - Clamping (Max) @ Ipp: 64.8V
Current - Peak Pulse (10/1000µs): 9.3A minimum
Power - Peak Pulse: 600W
Type: Zener, Bidirectional (1 channel)
Mounting Type: Through Hole
Package Compatibility: DO-15 or DO-204AC

All identified substitute parts maintain these core electrical specifications within acceptable tolerances. Peak pulse current values range from 9.3A to 9.7A, representing normal manufacturing variation within the P6KE47 series specification. Package designations (DO-15, DO-204AC) are mechanically and electrically equivalent for through-hole applications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Operating Temperature	Product Status	Package
P6KE47CA-T	Diodes Incorporated	40.2V	44.7V	64.8V	9.3A	600W	-55°C ~ 175°C	Obsolete	DO-15
P6KE47CA-B	Littelfuse Inc.	40.2V	44.7V	64.8V	9.4A	600W	-55°C ~ 175°C	Active	DO-204AC
P6KE47CA	Diotec Semiconductor	40.2V	44.7V	64.8V	9.7A	600W	-50°C ~ 175°C	Active	DO-15
P6KE47CA-AP	Micro Commercial Co	40.2V	44.7V	64.8V	9.3A	600W	-55°C ~ 175°C	Active	DO-15
P6KE47CA-BP	Micro Commercial Co	40.2V	44.7V	64.8V	9.3A	600W	-55°C ~ 175°C	Active	DO-15
P6KE47CA-E3/54	Vishay General Semiconductor - Diodes Division	40.2V	44.7V	64.8V	9.3A	600W	-55°C ~ 175°C	Active	DO-204AC
P6KE47CAHE3/54	Vishay General Semiconductor - Diodes Division	40.2V	44.7V	64.8V	9.3A	600W	-55°C ~ 175°C	Active	DO-204AC
P6KE47CA-G	Comchip Technology	40.2V	44.65V	64.8V	9.26A	600W	-55°C ~ 150°C	Active	DO-15
P6KE47CAE3/TR13	Microsemi Corporation	40.2V	44.7V	64.8V	9.3A	600W	-65°C ~ 150°C	Active	Axial

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

P6KE47CA-B (Littelfuse Inc.) and P6KE47CA-E3/54 (Vishay) are preferred substitutes. Both maintain identical electrical specifications to the original P6KE47CA-T, feature active product status ensuring long-term availability, and carry ROHS3 compliance. The Littelfuse variant offers bulk packaging with 1116 units in stock, while the Vishay option provides cut tape packaging with 12100 units available.

Secondary Substitutes (Equivalent Performance):

P6KE47CA (Diotec Semiconductor) and P6KE47CA-AP/BP (Micro Commercial Co) provide full electrical equivalence with active status. The Diotec variant offers the highest inventory (25400 units) and slightly elevated peak pulse current (9.7A). Micro Commercial Co variants maintain identical specifications to the original part with automotive-grade qualification available.

Specialized Applications:

P6KE47CAHE3/54 (Vishay) includes AEC-Q101 automotive qualification and tape & reel packaging, suitable for high-volume automated assembly. P6KE47CAE3/TR13 (Microsemi) provides extended low-temperature operation (-65°C minimum) for specialized thermal environments.

Temperature Consideration:

P6KE47CA-G (Comchip Technology) operates to 150°C maximum junction temperature, compared to 175°C for other variants. This part is suitable only for applications where the upper temperature limit does not exceed 150°C.

Frequently Asked Questions (FAQ)

Q: Can I use P6KE47CA-B as a direct replacement for P6KE47CA-T?

A: Yes. Both parts maintain 40.2V reverse standoff voltage, 64.8V clamping voltage, and 600W peak pulse power. The P6KE47CA-B peak pulse current is 9.4A versus 9.3A in the original, representing normal series variation. Package compatibility is confirmed (DO-15 and DO-204AC are mechanically equivalent for through-hole mounting).

Q: What is the difference between DO-15 and DO-204AC packaging?

A: DO-15 and DO-204AC are equivalent designations for the same axial through-hole package. Both refer to a two-lead cylindrical component with identical mechanical and electrical characteristics. Selection between them is based on supplier availability and internal packaging format (bulk, cut tape, or tape & reel).

Q: Are all substitute parts ROHS3 compliant?

A: All identified substitutes carry ROHS3 compliance certification. This ensures compatibility with environmental regulations and procurement requirements matching the original P6KE47CA-T specification.

Q: Which substitute offers the best inventory availability?

A: P6KE47CA (Diotec Semiconductor) provides the highest stock level at 25400 units. P6KE47CA-E3/54 (Vishay) offers 12100 units in cut tape format. Both ensure reliable procurement for production requirements.

Q: Can I use P6KE47CA-G in applications requiring operation above 150°C?

A: No. P6KE47CA-G is rated to 150°C maximum junction temperature, while the original P6KE47CA-T and most substitutes operate to 175°C. For applications exceeding 150°C, select alternatives with 175°C ratings.

Q: What is the significance of the automotive grade designation on P6KE47CAHE3/54?

A: The automotive grade and AEC-Q101 qualification indicate this part meets automotive industry reliability and testing standards. This variant is suitable for automotive and high-reliability applications requiring formal qualification documentation.

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