SA8V0A Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The SA8V0A is an 8V Zener transient voltage suppressor diode manufactured by onsemi, designed for general-purpose overvoltage protection in through-hole applications. This component features a 13.6V maximum clamping voltage and 36.7A peak pulse current capability in a DO-15 axial package. The part is currently classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and component procurement.

Substiute Parts

SA8V0A

onsemiIn Stock: 970SA8V0A Datasheet

Current PartRFQ

P5KE8.0A-BP

Micro Commercial CoIn Stock: 728P5KE8.0A-BP Datasheet

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P5KE8.0A-TP

Micro Commercial CoIn Stock: 874P5KE8.0A-TP Datasheet

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SA8.0A

Taiwan Semiconductor CorporationIn Stock: 300339SA8.0A Datasheet

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SAC8.0-TP

Micro Commercial CoIn Stock: 824SAC8.0-TP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SA8V0A is determined by the following critical parameters:

• Voltage - Reverse Standoff: 8V (exact match required)
• Voltage - Breakdown (Min): 8.89V (exact match required)
• Voltage - Clamping (Max) @ Ipp: 13.6V ±0.2V tolerance acceptable
• Current - Peak Pulse (10/1000µs): 36.7A minimum
• Power - Peak Pulse: 500W minimum
• Type: Zener, unidirectional
• Mounting Type: Through Hole
• Package: DO-15 or DO-204AC (DO-15 equivalent)

All identified substitute parts meet these electrical specifications and package requirements, ensuring functional compatibility in applications originally designed for the SA8V0A.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

P5KE8.0A-BP and P5KE8.0A-TP (Micro Commercial Co) are direct electrical equivalents with identical voltage and current specifications. Both parts are in active production status, ensuring long-term availability. The distinction between these two is packaging format: P5KE8.0A-BP is supplied in bulk, while P5KE8.0A-TP is supplied in tape and reel format.

SA8.0A (Taiwan Semiconductor Corporation) provides equivalent electrical performance with slightly higher peak pulse current (38A vs. 36.7A), offering additional margin. This part is actively produced and RoHS3 compliant. Operating temperature range extends to -55°C minimum.

Secondary Substitute (Minor Parameter Variance):

SAC8.0-TP (Micro Commercial Co) meets all critical electrical requirements with a maximum clamping voltage of 13.4V (0.2V lower than the original specification). Peak pulse current is 36A, marginally below the original 36.7A. This part is actively produced, RoHS3 compliant, and suitable for applications where the slightly reduced clamping voltage and current are acceptable within circuit design margins.

All substitute parts carry REACH Unaffected and EAR99 export classification status, matching the original component's regulatory profile.

Frequently Asked Questions (FAQ)

Q: Can I use SAC8.0-TP as a direct replacement for SA8V0A?

A: SAC8.0-TP is functionally compatible for most applications. The clamping voltage is 13.4V versus 13.6V (0.2V difference), and peak pulse current is 36A versus 36.7A. These minor variations remain within typical circuit design tolerances for general-purpose overvoltage protection. Verify that your specific application can accommodate these parameter ranges.

Q: What is the difference between P5KE8.0A-BP and P5KE8.0A-TP?

A: Both parts are electrically identical with matching voltage and current specifications. The difference is packaging: P5KE8.0A-BP is supplied in bulk format, while P5KE8.0A-TP is supplied in tape and reel format. Select based on your procurement and assembly process requirements.

Q: Are all substitute parts available in the same DO-15 package?

A: Yes. All substitute parts are specified for DO-204AC, DO-15, and axial package designations. They are mechanically and electrically compatible with through-hole PCB designs originally configured for the SA8V0A.

Q: Why is SA8V0A listed as obsolete?

A: The SA8V0A is no longer in active production by onsemi. The substitute parts listed provide equivalent electrical performance and are actively manufactured, ensuring continued availability for new designs and legacy system support.

Q: Do all substitute parts meet the same regulatory requirements?

A: Yes. All substitute parts carry REACH Unaffected status and EAR99 export classification, matching the original SA8V0A regulatory profile. SA8.0A and SAC8.0-TP are additionally RoHS3 compliant.

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

A: SA8V0A operating temperature is not specified in available documentation. Substitute parts operate within -55°C to -65°C minimum and 175°C maximum junction temperature ranges, providing standard industrial temperature coverage for general-purpose TVS applications.