SA60 Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The SA60 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient voltage protection applications. This component features a 60V reverse standoff voltage rating with a 101.64V maximum clamping voltage and 5.3A peak pulse current capability in a through-hole DO-204AC (DO-15) axial package. The SA60 is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing design support and component procurement.

Substiute Parts

SA60

Littelfuse Inc.In Stock: 1375SA60 Datasheet

Current PartRFQ

SA60A

Fairchild SemiconductorIn Stock: 5486SA60A Datasheet

DirectRFQ

SA60A-AP

Micro Commercial CoIn Stock: 807SA60A-AP Datasheet

MFR RecommendedRFQ

SA60A-BP

Micro Commercial CoIn Stock: 711SA60A-BP Datasheet

MFR RecommendedRFQ

SA60A-TP

Micro Commercial CoIn Stock: 954SA60A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SA60 are qualified based on strict electrical and mechanical parameter equivalence. The primary substitution criteria are:

• Voltage - Reverse Standoff (Typ): 60V
• Voltage - Clamping (Max) @ Ipp: Within acceptable range for the application
• Current - Peak Pulse (10/1000µs): 5.3A minimum
• Power - Peak Pulse: 500W minimum
• Operating Temperature Range: -55°C to 175°C (TJ)
• Mounting Type: Through Hole
• Package / Case: DO-204AC or DO-15 axial configuration
• Type: Zener diode, unidirectional

The substitute parts SA60A, SA60A-AP, SA60A-BP, and SA60A-TP meet these electrical and mechanical requirements. While the SA60A variants exhibit a lower maximum clamping voltage (96.8V versus 101.64V), they maintain the same reverse standoff voltage, peak pulse current, power dissipation capability, and thermal operating range. All substitute parts are packaged in DO-15 axial format, ensuring mechanical compatibility with through-hole PCB designs.

Parameter Comparison

Engineering Selection Recommendations

For applications currently using the SA60, the SA60A-AP, SA60A-BP, and SA60A-TP variants from Micro Commercial Co are preferred substitutes due to their active product status. These parts maintain full electrical and thermal compatibility with the original SA60 specification while offering ongoing availability and manufacturing support.

The SA60A from Fairchild Semiconductor is also electrically compatible but carries obsolete product status, limiting its suitability for new designs or long-term procurement strategies.

All substitute parts maintain ROHS3 compliance or REACH unaffected status, ensuring regulatory alignment with current environmental and safety standards. The lower maximum clamping voltage of the SA60A variants (96.8V versus 101.64V) remains within acceptable transient suppression performance for general-purpose applications matching the original SA60 design intent.

Frequently Asked Questions (FAQ)

Q: Can SA60A variants be used as direct replacements for the SA60?

A: Yes. The SA60A, SA60A-AP, SA60A-BP, and SA60A-TP maintain identical reverse standoff voltage (60V), peak pulse current (5.3A), power dissipation (500W), and operating temperature range (-55 to 175°C). All are packaged in DO-15 axial through-hole format. The clamping voltage difference (96.8V versus 101.64V) does not prevent functional substitution in general-purpose transient protection circuits.

Q: What is the difference between SA60A-AP, SA60A-BP, and SA60A-TP?

A: These three part numbers are manufactured by Micro Commercial Co and share identical electrical specifications and package format. The suffix designations (AP, BP, TP) typically indicate different manufacturing batches, tape configurations, or internal quality control designations. From an engineering perspective, they are functionally equivalent.

Q: Why is the SA60 obsolete?

A: The SA60 is classified as obsolete by Littelfuse Inc., indicating discontinued manufacturing and limited availability. Active substitute options (SA60A-AP, SA60A-BP, SA60A-TP) are available from Micro Commercial Co to support ongoing component requirements.

Q: Are there any compliance differences between the SA60 and its substitutes?

A: All parts maintain ROHS3 compliance or REACH unaffected status. No compliance barriers exist for substitution in regulated applications.

Q: Does the lower clamping voltage of SA60A variants affect circuit performance?

A: The SA60A clamping voltage of 96.8V is lower than the SA60 specification of 101.64V. Circuit designers must verify that this 4.84V difference remains acceptable for the specific transient protection application. In general-purpose applications, this variance typically does not impact performance.