SA64A-E3/73 Equivalent & Substitute Parts

Part Overview

The SA64A-E3/73 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This through-hole component operates with a 64V reverse standoff voltage and provides 103V maximum clamping voltage, designed for general-purpose transient voltage protection applications. The part is currently active in production with 32,100 units in stock. Equivalent and substitute parts are identified based on matching electrical characteristics and mechanical compatibility within the DO-204AC (DO-15) axial package format.

Substiute Parts

SA64A-E3/73

Vishay General Semiconductor - Diodes DivisionIn Stock: 32177SA64A-E3/73 Datasheet

Current PartRFQ

P6KE75A

Fairchild SemiconductorIn Stock: 3064P6KE75A Datasheet

MFR RecommendedRFQ

SA64A

Taiwan Semiconductor CorporationIn Stock: 3436SA64A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SA64A-E3/73 are qualified based on the following electrical and mechanical parameters:

• Voltage - Reverse Standoff: 64V ±0.1V tolerance
• Voltage - Clamping (Max) @ Ipp: 103V (exact match required)
• Unidirectional Channels: 1 (single channel configuration)
• Package / Case: DO-204AC (DO-15) axial through-hole format
• Mounting Type: Through Hole
• Type: Zener TVS diode

The identified substitutes maintain these core parameters within acceptable engineering tolerances. Peak pulse current and power ratings may vary within the same voltage class while maintaining functional equivalence for general-purpose transient suppression applications.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active product status and are suitable for general-purpose transient voltage suppression in the 64V reverse standoff class. Selection between these parts should be based on the following criteria:

SA64A-E3/73 (Vishay): Primary choice when ROHS3 compliance and -55°C lower temperature bound are required. Established inventory of 32,100 units supports immediate availability.

P6KE75A (Fairchild): Suitable for applications where higher peak pulse current (6.1A) and power dissipation (600W) provide additional margin. Operating temperature minimum of -50°C is acceptable for most industrial applications. ROHS3 compliance status not specified in provided data.

SA64A (Taiwan Semiconductor): Functionally equivalent to the primary part with identical voltage and temperature specifications. ROHS3 compliant. Peak pulse current of 5A provides intermediate performance between the Vishay and Fairchild options. Available inventory of 3,400 units supports secondary sourcing.

All parts are packaged in DO-204AC (DO-15) axial format and mount identically in through-hole applications. Electrical parameters across all three parts fall within acceptable substitution tolerances for the 64V/103V clamping voltage class.

Frequently Asked Questions (FAQ)

Q: Can P6KE75A replace SA64A-E3/73 in existing designs?

A: Yes. Both parts share identical reverse standoff voltage (64V nominal), clamping voltage (103V), and package format (DO-204AC/DO-15 axial). The P6KE75A provides higher peak pulse current (6.1A vs. 4.9A) and power rating (600W vs. 500W), making it suitable for applications requiring additional transient suppression margin. Operating temperature minimum differs by 5°C (-50°C vs. -55°C).

Q: What is the difference between SA64A-E3/73 and SA64A?

A: Both are 64V/103V TVS diodes in DO-204AC packaging from different manufacturers (Vishay vs. Taiwan Semiconductor). Electrical specifications are identical. SA64A-E3/73 includes the suffix designation specific to Vishay's product line. Both support the same operating temperature range (-55°C to 175°C) and are ROHS3 compliant.

Q: Are these parts interchangeable on a PCB?

A: Yes. All three parts use the DO-204AC (DO-15) axial through-hole package with identical pin spacing and orientation. Direct substitution on the PCB is possible without layout modification.

Q: Which part should I select for new designs?

A: Selection depends on application requirements. For standard general-purpose transient suppression, SA64A-E3/73 or SA64A are appropriate. For applications requiring higher transient current handling or additional safety margin, P6KE75A is suitable. Verify compliance requirements (ROHS3, REACH) against your design specifications.

Q: What are the key parameters that define substitution eligibility?

A: Reverse standoff voltage (64V), clamping voltage (103V), unidirectional channel configuration (1 channel), and package format (DO-204AC/DO-15 axial through-hole) are the primary parameters determining substitution eligibility. Peak pulse current and power ratings may vary within the same voltage class.