P6KE56CA-T Equivalent & Substitute Parts

Part Overview

The P6KE56CA-T is a transient voltage suppressor (TVS) diode manufactured by Diodes Incorporated, designed for general-purpose overvoltage protection in through-hole applications. This part operates with a 47.8V reverse standoff voltage and provides 77V clamping at peak pulse current, delivering 600W peak pulse power dissipation. The P6KE56CA-T is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	47.8V
Voltage - Breakdown (Min)	53.2V
Voltage - Clamping (Max) @ Ipp	77V
Current - Peak Pulse (10/1000µs)	7.8A
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
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the P6KE56CA-T is determined by strict equivalence across the following critical parameters:

Voltage - Reverse Standoff (Typ): 47.8V
Voltage - Breakdown (Min): 53.2V
Voltage - Clamping (Max) @ Ipp: 77V
Current - Peak Pulse (10/1000µs): 7.8A (±0.1A tolerance acceptable)
Power - Peak Pulse: 600W
Type: Zener, Bidirectional
Mounting Type: Through Hole
Package / Case: DO-204AC, DO-15, or Axial variants

Parts meeting these electrical specifications across all parameters are classified as direct equivalents. Parts with reduced peak pulse current (5.2A) or lower power dissipation (400W) are classified as upgrades with reduced performance capability and require application-level verification.

Parameter Comparison

Part Number	Manufacturer	VWM (Typ)	VBR (Min)	VC (Max)	Ipp (A)	Power (W)	Package	Status
P6KE56CA-T	Diodes Incorporated	47.8V	53.2V	77V	7.8A	600W	DO-15	Obsolete
P6KE56CA-B	Littelfuse Inc.	47.8V	53.2V	77V	7.9A	600W	DO-204AC (DO-15)	Active
P6KE56CA	Taiwan Semiconductor Corporation	47.8V	53.2V	77V	7.8A	600W	DO-15	Active
P6KE56CA-AP	Micro Commercial Co	47.8V	53.2V	77V	7.8A	600W	DO-15	Active
P6KE56CA-BP	Micro Commercial Co	47.8V	53.2V	77V	7.8A	600W	DO-15	Active
P6KE56CA-E3/54	Vishay General Semiconductor - Diodes Division	47.8V	53.2V	77V	7.8A	600W	DO-204AC (DO-15)	Active
P6KE56CA-TP	Micro Commercial Co	47.8V	53.2V	77V	7.8A	600W	DO-15	Active
P6KE56CAHE3/54	Vishay General Semiconductor - Diodes Division	47.8V	53.2V	77V	7.8A	600W	DO-204AC (DO-15)	Active
BZW04-48B	Taiwan Semiconductor Corporation	47.8V	53.2V	77V	5.2A	400W	DO-204AL (DO-41)	Active
P6KE56CAE3/TR13	Microsemi Corporation	47.8V	53.2V	77V	7.8A	600W	Axial	Active

Engineering Selection Recommendations

Direct Equivalents (Active Status, Full Electrical Equivalence):

P6KE56CA-B, P6KE56CA, P6KE56CA-AP, P6KE56CA-BP, P6KE56CA-E3/54, P6KE56CA-TP, and P6KE56CAHE3/54 are direct electrical equivalents with identical or marginally higher peak pulse current ratings. All are ROHS3 compliant with MSL 1 (Unlimited). Selection among these parts should be based on packaging availability (bulk, cut tape, or tape & reel), manufacturer qualification requirements, and supply chain considerations. P6KE56CA-E3/54 and P6KE56CAHE3/54 are qualified under the TransZorb® series and carry AEC-Q101 automotive qualification (P6KE56CAHE3/54), suitable for automotive and telecom applications.

Upgrade Alternative (Reduced Performance):

BZW04-48B is an active alternative with identical voltage parameters but reduced peak pulse current (5.2A vs. 7.8A) and lower power dissipation (400W vs. 600W). This part uses a different package (DO-204AL/DO-41) and is suitable only for applications where the lower current and power ratings are acceptable. Application-level circuit analysis is required to confirm compatibility.

Manufacturer-Recommended Alternative:

P6KE56CAE3/TR13 (Microsemi Corporation) provides full electrical equivalence with identical electrical specifications. Operating temperature range is -65°C to 150°C, which is narrower than the original -55°C to 175°C specification. This part is suitable for general-purpose applications within the specified temperature range.

Frequently Asked Questions (FAQ)

Q: Can P6KE56CA-B replace P6KE56CA-T directly?

A: Yes. P6KE56CA-B is a direct electrical equivalent with 7.9A peak pulse current (0.1A higher than the original 7.8A) and identical voltage and power specifications. The package designation differs (DO-204AC vs. DO-15), but both are equivalent axial through-hole packages. Verify PCB footprint compatibility before substitution.

Q: What is the difference between P6KE56CA and P6KE56CA-AP?

A: Both parts have identical electrical specifications (47.8V standoff, 77V clamping, 7.8A peak pulse, 600W power). The primary differences are manufacturer (Taiwan Semiconductor Corporation vs. Micro Commercial Co) and packaging format (cut tape vs. bulk). P6KE56CA-AP includes automotive-grade qualification. Selection depends on supply chain availability and application requirements.

Q: Is BZW04-48B a suitable replacement?

A: BZW04-48B meets the voltage specifications but has reduced peak pulse current (5.2A vs. 7.8A) and lower power dissipation (400W vs. 600W). It uses a different package (DO-204AL/DO-41). This part is suitable only if the application circuit can operate within the reduced current and power limits. Circuit-level analysis is required.

Q: What is the significance of the P6KE56CAHE3/54 AEC-Q101 qualification?

A: AEC-Q101 qualification indicates the part meets automotive industry reliability and quality standards. P6KE56CAHE3/54 is suitable for automotive and high-reliability applications. If your application requires automotive-grade components, this part is the appropriate selection among the available equivalents.

Q: Can I use P6KE56CAE3/TR13 in place of P6KE56CA-T?

A: P6KE56CAE3/TR13 provides full electrical equivalence with identical voltage and power specifications. However, the operating temperature range is -65°C to 150°C, which is narrower than the original -55°C to 175°C. Verify that your application operates within this temperature range before substitution.

Q: What packaging options are available for direct equivalents?

A: Direct equivalents are available in multiple packaging formats: bulk (P6KE56CA-B, P6KE56CA-AP, P6KE56CA-BP, P6KE56CA-TP), cut tape (P6KE56CA), tape & reel (P6KE56CA-E3/54, P6KE56CAHE3/54), and axial (P6KE56CAE3/TR13). Select based on your procurement and assembly requirements.

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