SA64CA Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The SA64CA is a 64V working voltage (Vwm) bidirectional Zener TVS diode in DO-15 (DO-204AC) axial package, rated for 4.9A peak pulse current and 500W peak pulse power. Designed for general-purpose transient voltage suppression applications, this component provides 103V maximum clamping voltage at peak pulse current.

The SA64CA is classified as obsolete by the original manufacturer (onsemi). Equivalent and substitute parts are available from active manufacturers including Taiwan Semiconductor Corporation, Vishay General Semiconductor, Micro Commercial Co, Littelfuse Inc., and Diotec Semiconductor. These alternatives maintain electrical compatibility while offering improved product status and availability.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	64V	V
Voltage - Breakdown (Min)	71.1V	V
Voltage - Clamping (Max) @ Ipp	103V	V
Current - Peak Pulse (10/1000µs)	4.9A	A
Power - Peak Pulse	500W	W
Type	Zener	—
Bidirectional Channels	1	—
Mounting Type	Through Hole	—
Package / Case	DO-204AC, DO-15, Axial	—

Substitute Part Grouping Explanation

Substitute parts for the SA64CA are classified into two categories based on electrical parameter alignment:

Direct Equivalents maintain identical electrical specifications:

Voltage - Reverse Standoff (Typ): 64V
Voltage - Breakdown (Min): 71.1V
Voltage - Clamping (Max) @ Ipp: 103V
Current - Peak Pulse (10/1000µs): 4.9A to 5A
Power - Peak Pulse: 500W
Package: DO-15 or DO-204AC (axial)

Similar Alternatives share the same voltage and clamping characteristics but differ in peak pulse current or power rating:

Voltage - Reverse Standoff (Typ): 64V to 64.1V
Voltage - Breakdown (Min): 71.1V to 71.3V
Voltage - Clamping (Max) @ Ipp: 103V
Current - Peak Pulse (10/1000µs): 5.9A to 6.1A
Power - Peak Pulse: 500W to 600W
Package: DO-15 or DO-204AC (axial)

All substitute parts are through-hole mounted in DO-15 or DO-204AC packages and are suitable for general-purpose transient voltage suppression applications.

Parameter Comparison

Part Number	Manufacturer	Vwm (Typ)	V(BR) (Min)	Vc (Max)	Ipp	Power	Package	Status
SA64CA	onsemi	64V	71.1V	103V	4.9A	500W	DO-15	Obsolete
SA64CA	Taiwan Semiconductor Corporation	64V	71.1V	103V	5A	500W	DO-204AC	Active
SA64CA-E3/54	Vishay General Semiconductor	64V	71.1V	103V	4.9A	500W	DO-204AC	Active
SA64CAHE3/54	Vishay General Semiconductor	64V	71.1V	103V	4.9A	500W	DO-204AC	Active
P5KE64CA-AP	Micro Commercial Co	64V	71.1V	103V	4.9A	500W	DO-15	Active
P5KE64CA-BP	Micro Commercial Co	64V	71.1V	103V	4.9A	500W	DO-15	Active
P5KE64CA-TP	Micro Commercial Co	64V	71.1V	103V	4.9A	500W	DO-15	Active
SA64CA-AP	Micro Commercial Co	64V	71.1V	103V	5A	500W	DO-15	Active
SA64CA-BP	Micro Commercial Co	64V	71.1V	103V	5A	500W	DO-15	Active
P6KE75CA	Diotec Semiconductor	64.1V	71.3V	103V	6.1A	600W	DO-15	Active
P6KE75CA-B	Littelfuse Inc.	64.1V	71.3V	103V	5.9A	600W	DO-204AC	Active

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance):

Select SA64CA-E3/54 (Vishay General Semiconductor) or SA64CA (Taiwan Semiconductor Corporation) when exact electrical specifications are required. Both parts maintain 64V Vwm, 71.1V minimum breakdown voltage, and 103V clamping voltage. Vishay's SA64CA-E3/54 is ROHS3 compliant and carries the TransZorb® series designation. Taiwan Semiconductor's SA64CA variant is also ROHS3 compliant and available in active production status.

For Automotive Applications:

Select SA64CAHE3/54 (Vishay General Semiconductor) when AEC-Q101 qualification is required. This part maintains identical electrical specifications to the SA64CA while meeting automotive-grade standards and operating temperature range of -55°C to 175°C.

For Higher Current/Power Margin:

Select P6KE75CA-B (Littelfuse Inc.) or P6KE75CA (Diotec Semiconductor) when increased peak pulse current (5.9A to 6.1A) and power dissipation (600W) are acceptable. These parts maintain the same 64V to 64.1V Vwm and 103V clamping voltage while providing enhanced transient handling capability. P6KE75CA-B is ROHS3 compliant.

For Bulk Packaging:

Select P5KE64CA-TP, P5KE64CA-AP, or P5KE64CA-BP (Micro Commercial Co) when bulk packaging is preferred over tape and reel. All three variants maintain identical electrical specifications to the original SA64CA.

All substitute parts listed are in active production status, ensuring long-term availability and supply chain stability compared to the obsolete onsemi SA64CA.

Frequently Asked Questions (FAQ)

Q: Can I use P6KE75CA as a direct replacement for SA64CA?

A: P6KE75CA is electrically compatible but not a direct replacement. It maintains the same 64.1V Vwm and 103V clamping voltage but provides higher peak pulse current (6.1A vs. 4.9A) and power dissipation (600W vs. 500W). Use P6KE75CA only if your circuit can accommodate the increased current and power specifications.

Q: What is the difference between SA64CA-E3/54 and SA64CAHE3/54?

A: Both parts are manufactured by Vishay General Semiconductor with identical electrical specifications. SA64CAHE3/54 includes AEC-Q101 automotive qualification and is suitable for automotive applications. SA64CA-E3/54 is suitable for general-purpose applications.

Q: Are all substitute parts RoHS compliant?

A: Most substitute parts are ROHS3 compliant (SA64CA from Taiwan Semiconductor, SA64CA-E3/54, SA64CAHE3/54, P6KE75CA-B). P6KE75CA (Diotec) lists RoHS status as not applicable. Micro Commercial Co variants (P5KE64CA series and SA64CA-AP/BP) do not specify RoHS status in the provided data.

Q: What packaging options are available?

A: Substitute parts are available in two packaging formats: Tape & Reel (TR) for automated assembly and Bulk for manual assembly. All parts use DO-15 or DO-204AC axial packages. Select packaging based on your assembly process requirements.

Q: Can I substitute SA64CA with parts from different manufacturers?

A: Yes. All listed substitute parts maintain the core electrical specifications (64V Vwm, 71.1V to 71.3V breakdown voltage, 103V clamping voltage) and DO-15/DO-204AC package compatibility. Verify operating temperature range and compliance certifications match your application requirements.

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

A: Most substitute parts operate from -55°C to 175°C (TJ). P5KE64CA variants (Micro Commercial Co) operate from -65°C to 175°C, providing extended low-temperature performance. P6KE75CA (Diotec) operates from -50°C to 175°C.

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