SA26A-E3/73 Equivalent & Substitute Parts

Part Overview

The SA26A-E3/73 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This through-hole component operates with a 26V reverse standoff voltage and provides 42.1V maximum clamping voltage at peak pulse current. The device is designed for general-purpose transient voltage suppression applications and is currently in active product status with 32,400 units in stock.

Equivalent and substitute parts are necessary when the original manufacturer discontinues production, when alternative sourcing improves supply chain resilience, or when design requirements permit operation within the specified parameter tolerances of alternative components.

Substiute Parts

SA26A-E3/73

Vishay General Semiconductor - Diodes DivisionIn Stock: 32427SA26A-E3/73 Datasheet

Current PartRFQ

P6KE30A

Taiwan Semiconductor CorporationIn Stock: 25293P6KE30A Datasheet

MFR RecommendedRFQ

SA26A

Fairchild SemiconductorIn Stock: 5783SA26A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SA26A-E3/73 is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): 25.6V to 26V
• Voltage - Clamping (Max) @ Ipp: 41.4V to 42.1V
• Current - Peak Pulse (10/1000µs): minimum 11.9A
• Power - Peak Pulse: minimum 500W
• Mounting Type: Through Hole
• Package / Case: DO-204AC or DO-15 (Axial)
• Type: Zener, Unidirectional (1 channel)
• RoHS3 Compliance: Required

The substitute parts identified below meet these electrical and mechanical criteria within acceptable engineering tolerances for general-purpose TVS diode applications.

Parameter Comparison

Engineering Selection Recommendations

P6KE30A (Taiwan Semiconductor Corporation) is the primary substitute for the SA26A-E3/73. This component maintains electrical compatibility within specified tolerances, with reverse standoff voltage of 25.6V and clamping voltage of 41.4V. The P6KE30A provides superior peak pulse current capability (14.5A versus 11.9A) and higher peak pulse power (600W versus 500W), making it suitable for applications requiring equal or greater transient suppression performance. The device is ROHS3 compliant and currently in active production with 25,200 units in stock.

SA26A (Fairchild Semiconductor) is an alternative substitute with identical electrical specifications to the main part (26V standoff, 42.1V clamping, 12.1A peak pulse current). However, this component carries an obsolete product status, indicating discontinued manufacturing. Selection of SA26A should be limited to applications where existing inventory is available and long-term supply is not a requirement.

For new designs and applications requiring sustained component availability, P6KE30A is the recommended substitute. For legacy system maintenance where SA26A inventory exists, that component remains electrically compatible.

Frequently Asked Questions (FAQ)

Q: Can P6KE30A directly replace SA26A-E3/73 in existing designs?

A: Yes. P6KE30A meets all critical electrical parameters within acceptable tolerances. Reverse standoff voltage (25.6V) and clamping voltage (41.4V) are within the operational range of the original part. Both components use identical DO-15 through-hole packaging and are pin-compatible.

Q: What is the difference between DO-204AC and DO-15 packaging?

A: DO-204AC and DO-15 are equivalent designations for the same axial through-hole package used in this product category. Both refer to a two-lead cylindrical component with axial leads suitable for through-hole PCB mounting.

Q: Why does P6KE30A have higher peak pulse current and power ratings?

A: P6KE30A is rated for 14.5A peak pulse current and 600W peak pulse power, compared to 11.9A and 500W for SA26A-E3/73. These higher ratings indicate greater transient suppression capability. The component remains compatible because it operates within the same voltage window and can handle the same or greater transient events.

Q: Is SA26A suitable for new production designs?

A: No. SA26A carries an obsolete product status, indicating discontinued manufacturing. This component should be used only for maintenance and repair of existing systems where inventory is available. For new designs, P6KE30A is the appropriate selection.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. Both P6KE30A and SA26A are ROHS3 compliant, matching the compliance status of the main part SA26A-E3/73.

Q: What is the operating temperature range for P6KE30A?

A: Operating temperature range is not specified in the provided data for P6KE30A. For applications requiring confirmed temperature performance, refer to the manufacturer's datasheet or contact Taiwan Semiconductor Corporation directly.