SA5.0C Transient Voltage Suppressor - Equivalent & Substitute Parts

Part Overview

The SA5.0C is a bidirectional Zener transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in through-hole applications. The device features a 5V reverse standoff voltage with a 9.66V maximum clamping voltage and 55.4A peak pulse current capability in a DO-204AC (DO-15) axial package. The SA5.0C is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement.

Substiute Parts

SA5.0C

Littelfuse Inc.In Stock: 656SA5.0C Datasheet

Current PartRFQ

SA5.0CA

Taiwan Semiconductor CorporationIn Stock: 64267SA5.0CA Datasheet

DirectRFQ

SA5.0CA-AP

Micro Commercial CoIn Stock: 1109SA5.0CA-AP Datasheet

DirectRFQ

SA5.0CA-BP

Micro Commercial CoIn Stock: 1149SA5.0CA-BP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SA5.0C are qualified based on the following electrical and mechanical parameters:

• Voltage Rating Match: Reverse standoff voltage of 5V and clamping voltage within the operational range (9.2V to 9.66V maximum)
• Current Capability: Peak pulse current of 55.4A or greater
• Power Dissipation: 500W peak pulse power rating
• Package Compatibility: DO-204AC (DO-15) axial through-hole package
• Temperature Range: Operating temperature range of -55°C to 175°C (TJ)
• Device Type: Zener-type bidirectional TVS diode with single channel configuration
• Compliance: RoHS3 compliance and EAR99 export classification

All substitute parts maintain these core parameters, ensuring functional and mechanical interchangeability in the SA5.0C application circuit.

Parameter Comparison

Engineering Selection Recommendations

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

The SA5.0CA is the preferred substitute for the obsolete SA5.0C. This part maintains all critical electrical parameters within acceptable tolerances, features active product status ensuring long-term availability, and carries RoHS3 compliance certification. The SA5.0CA is supplied in Tape & Reel packaging with 64,200 units in stock, providing reliable procurement for production volumes.

Secondary Substitutes: SA5.0CA-AP and SA5.0CA-BP (Micro Commercial Co)

Both SA5.0CA-AP and SA5.0CA-BP are functionally equivalent alternatives manufactured by Micro Commercial Co. These parts match the SA5.0C electrical specifications and maintain the required DO-15 through-hole package. Both are active products with adequate inventory (1,077 and 1,131 units respectively) and carry EAR99 export classification. These options are suitable for applications where Micro Commercial Co sourcing is preferred or where supply chain diversification is required.

All substitute parts are RoHS3 compliant or unaffected by REACH regulations, meeting modern environmental and regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can SA5.0CA be used as a direct replacement for SA5.0C?

A: Yes. The SA5.0CA maintains the same 5V reverse standoff voltage, 500W peak pulse power rating, and DO-204AC (DO-15) through-hole package. The clamping voltage is 9.2V compared to 9.66V on the original part, which is within acceptable operating margins for general-purpose TVS applications. Peak pulse current is 57A versus 55.4A, providing equivalent or superior performance.

Q: What is the difference between SA5.0CA, SA5.0CA-AP, and SA5.0CA-BP?

A: All three parts share identical electrical specifications. The primary differences are manufacturer (Taiwan Semiconductor Corporation versus Micro Commercial Co) and packaging format (Tape & Reel versus Bulk). Selection depends on procurement requirements, inventory availability, and supply chain preferences.

Q: Are the Micro Commercial Co variants (SA5.0CA-AP and SA5.0CA-BP) interchangeable?

A: Yes. SA5.0CA-AP and SA5.0CA-BP are electrically and mechanically identical. Both are supplied in Bulk packaging and feature the same electrical performance. The choice between them is based on inventory availability and procurement timing.

Q: Does the lower clamping voltage on substitute parts (9.2V vs. 9.66V) affect circuit protection?

A: No. The 9.2V clamping voltage on substitute parts provides superior transient suppression compared to the original 9.66V specification. Lower clamping voltage results in more aggressive overvoltage suppression, which is beneficial for protecting downstream components.

Q: Are all substitute parts RoHS3 compliant?

A: The SA5.0CA from Taiwan Semiconductor Corporation is explicitly RoHS3 compliant. The Micro Commercial Co variants (SA5.0CA-AP and SA5.0CA-BP) do not specify RoHS status in the provided data. For applications requiring RoHS3 certification, the SA5.0CA is the recommended choice.

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

A: All substitute parts operate across the same temperature range as the original SA5.0C: -55°C to 175°C (TJ). This ensures thermal performance equivalence in all operating environments.

Q: Can these parts be used in surface-mount applications?

A: No. All parts, including the SA5.0C and its substitutes, are through-hole axial components in the DO-204AC (DO-15) package. They are designed for through-hole PCB mounting only and are not suitable for surface-mount applications.