P6KE47CA-B Equivalent & Substitute Parts

Part Overview

The P6KE47CA-B is a transient voltage suppressor (TVS) diode manufactured by Diodes Incorporated, designed for general-purpose overvoltage protection applications. This bidirectional Zener diode operates with a reverse standoff voltage of 40.2V and provides clamping at 64.8V with a peak pulse current rating of 9.3A. The component is housed in a DO-15 (DO-204AC) through-hole package and maintains active product status with full RoHS3 compliance. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity.

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
Mounting Type	Through Hole
Package / Case	DO-204AC, DO-15, Axial
Operating Temperature	-55°C ~ 175°C (TJ)
RoHS Status	ROHS3 Compliant
Type	Zener
Bidirectional Channels	1

Substitute Part Grouping Explanation

Substitute parts for the P6KE47CA-B are qualified based on electrical parameter equivalence within the following criteria:

Voltage parameters must match: Reverse standoff voltage of 40.2V, breakdown voltage minimum of 44.7V, and clamping voltage maximum of 64.8V. Peak pulse current must be within the 9.3A to 9.7A range. Power dissipation capability must equal or exceed 600W peak pulse rating. Package configuration must be DO-15 or DO-204AC (functionally equivalent axial through-hole formats). Operating temperature range must support the application requirement of -55°C to 175°C. All parts must maintain RoHS3 compliance and active product status.

Parameter Comparison

Parameter	P6KE47CA-B (Diodes Inc.)	P6KE47CA (Diotec)	P6KE47CA-E3/54 (Vishay)	TP6KE47CA (Littelfuse)
Manufacturer	Diodes Incorporated	Diotec Semiconductor	Vishay General Semiconductor	Littelfuse Inc.
Voltage - Reverse Standoff (Typ)	40.2V	40.2V	40.2V	40.2V
Voltage - Breakdown (Min)	44.7V	44.7V	44.7V	44.7V
Voltage - Clamping (Max) @ Ipp	64.8V	64.8V	64.8V	64.8V
Current - Peak Pulse (10/1000µs)	9.3A	9.7A	9.3A	9.4A
Power - Peak Pulse	600W	600W	600W	600W
Operating Temperature	-55°C ~ 175°C	-50°C ~ 175°C	-55°C ~ 175°C	-55°C ~ 175°C
Package / Case	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

All four parts maintain active product status and full RoHS3 compliance, qualifying them for direct substitution in applications requiring 40.2V reverse standoff protection with 64.8V clamping characteristics.

The P6KE47CA from Diotec Semiconductor provides the highest peak pulse current rating at 9.7A, offering additional margin in high-transient environments. Operating temperature minimum is -50°C versus -55°C for other variants; applications requiring operation below -50°C should specify the Diodes Incorporated, Vishay, or Littelfuse alternatives.

The P6KE47CA-E3/54 from Vishay is supplied in cut tape packaging and carries the TransZorb® series designation. The TP6KE47CA from Littelfuse includes AEC-Q101 automotive qualification and is designated for automotive-grade applications requiring formal qualification documentation.

Peak pulse current variations (9.3A to 9.7A) fall within acceptable tolerance for the 600W power rating and do not affect functional substitution in standard general-purpose protection circuits.

Frequently Asked Questions (FAQ)

Q: Can the P6KE47CA from Diotec replace the P6KE47CA-B from Diodes Incorporated?

A: Yes. Both parts share identical voltage parameters (40.2V standoff, 44.7V breakdown, 64.8V clamping), equivalent peak pulse current ratings (9.3A vs. 9.7A), matching 600W power dissipation, and identical DO-15 package configuration. RoHS3 compliance and active product status are maintained.

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

A: DO-15 and DO-204AC are functionally equivalent designations for the same axial through-hole diode package format. Both terms refer to the same physical package used across all listed substitute parts.

Q: Is the TP6KE47CA suitable for non-automotive applications?

A: Yes. The TP6KE47CA meets all electrical and mechanical requirements for general-purpose TVS applications. AEC-Q101 automotive qualification is an additional certification that does not restrict use in non-automotive circuits.

Q: Does the Diotec P6KE47CA operating temperature range of -50°C to 175°C affect substitution?

A: The Diotec variant has a minimum operating temperature of -50°C versus -55°C for other parts. Applications requiring operation below -50°C must use the Diodes Incorporated P6KE47CA-B, Vishay P6KE47CA-E3/54, or Littelfuse TP6KE47CA.

Q: Are all substitute parts suitable for the same circuit board layout?

A: Yes. All parts use identical DO-15 (DO-204AC) axial through-hole package geometry and pin configuration, supporting direct footprint compatibility without layout modification.

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