SA5.0A Equivalent & Substitute Parts Reference

Part Overview

The SA5.0A is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by onsemi, designed for general-purpose voltage clamping applications. Rated at 500W peak pulse power with a 5.0V reverse standoff voltage, this component is classified as obsolete. Due to its obsolete status, identifying equivalent and substitute parts from active manufacturers is essential for design continuity, procurement reliability, and long-term product support.

Substiute Parts

SA5.0A

onsemiIn Stock: 300141SA5.0A Datasheet

Current PartRFQ

SA5.0A

Taiwan Semiconductor CorporationIn Stock: 300189SA5.0A Datasheet

DirectRFQ

BZW06-5V8

STMicroelectronicsIn Stock: 7473BZW06-5V8 Datasheet

SimilarRFQ

SA5.0A-TP

Micro Commercial CoIn Stock: 7340SA5.0A-TP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SA5.0A are identified based on the following critical parameters that determine functional equivalence:

• Voltage - Reverse Standoff (Typ): 5.0V to 5.8V range
• Unidirectional Configuration: Single channel only
• Package / Case: DO-204AC (DO-15) axial through-hole
• Power - Peak Pulse: 500W to 600W
• Type: Zener diode
• Mounting Type: Through Hole
• Product Status: Active (preferred for new designs)
• RoHS Compliance: ROHS3 Compliant (preferred)

The substitute parts listed below meet these criteria and are sourced from active manufacturers with current production status and modern compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: SA5.0A (Taiwan Semiconductor Corporation)

This part provides the closest electrical match to the original SA5.0A. It maintains identical reverse standoff voltage (5V), breakdown voltage (6.4V minimum), and clamping voltage (9.2V maximum). Peak pulse power is rated at 500W, matching the original specification. The part is manufactured by an active supplier with ROHS3 compliance and unlimited moisture sensitivity rating. This substitute is recommended for direct replacement in existing designs.

Secondary Substitute: SA5.0A-TP (Micro Commercial Co)

This part offers equivalent electrical performance with 5V reverse standoff voltage, 6.4V breakdown voltage, and 9.2V clamping voltage. Peak pulse power is 500W. The manufacturer is active with ROHS3 compliance. This substitute is suitable for applications requiring the same electrical characteristics as the original part.

Alternative Substitute: BZW06-5V8 (STMicroelectronics)

This part operates at a higher reverse standoff voltage (5.8V) and exhibits higher clamping voltage (13.4V maximum) and peak pulse current (298A at 8/20µs). Peak pulse power is rated at 600W. While the electrical characteristics differ from the original SA5.0A, this part may be suitable for applications where higher voltage margins and current handling are acceptable. The manufacturer is active with ROHS3 compliance. Circuit-level validation is required before selection.

All substitute parts share the same DO-204AC (DO-15) axial through-hole package, enabling direct mechanical compatibility. All substitutes are from active manufacturers with current production status and modern compliance certifications, providing superior long-term supply chain reliability compared to the obsolete original part.

Frequently Asked Questions (FAQ)

Q: Can the SA5.0A be directly replaced with any of these substitutes?

A: The SA5.0A (Taiwan Semiconductor Corporation) and SA5.0A-TP (Micro Commercial Co) provide direct electrical equivalence and are recommended for drop-in replacement. The BZW06-5V8 has different voltage and current characteristics and requires circuit-level evaluation before use.

Q: What is the primary difference between the substitute parts?

A: The SA5.0A (Taiwan Semiconductor) and SA5.0A-TP maintain the original 5V reverse standoff voltage and 9.2V clamping voltage. The BZW06-5V8 operates at 5.8V reverse standoff with 13.4V clamping voltage, providing higher voltage margins but different circuit behavior.

Q: Are all substitutes compatible with the original DO-15 package footprint?

A: Yes. All substitute parts use the DO-204AC (DO-15) axial through-hole package, ensuring mechanical and footprint compatibility with the original SA5.0A.

Q: Why is the original SA5.0A obsolete?

A: The original onsemi SA5.0A is classified as obsolete and no longer in active production. Substitute parts from active manufacturers ensure continued availability and access to modern compliance certifications such as ROHS3.

Q: Do all substitutes meet RoHS compliance?

A: The original SA5.0A is RoHS non-compliant. All three substitute parts are ROHS3 compliant, meeting current regulatory requirements for new designs and procurement.

Q: What is the moisture sensitivity level for these parts?

A: All parts, including the original and all substitutes, carry an MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions for storage and handling.