SAC26 Transient Voltage Suppressor - Equivalent & Substitute Parts

Part Overview

The SAC26 is a unidirectional Zener-type transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose voltage clamping applications. This through-hole component operates across a temperature range of -55°C to 175°C and is housed in a DO-204AC (DO-15) axial package. The part is currently in active production status with 1,038 units available in inventory. Alternative components may be required due to supply constraints, design optimization, or application-specific performance requirements.

Substiute Parts

SAC26

Littelfuse Inc.In Stock: 1111SAC26 Datasheet

Current PartRFQ

P6KE30A

Taiwan Semiconductor CorporationIn Stock: 25293P6KE30A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SAC26 is determined by electrical and mechanical compatibility within the following parameters:

Critical Substitution Criteria:

• Unidirectional Zener-type TVS diode configuration
• Reverse standoff voltage within acceptable tolerance of 26V nominal
• Breakdown voltage minimum in the 28-29V range
• Clamping voltage capability at or below 42.3V maximum
• Peak pulse current rating of 11.1A or greater
• Through-hole axial package (DO-15 / DO-204AC compatible)
• RoHS3 compliance and equivalent moisture sensitivity level

The P6KE30A from Taiwan Semiconductor Corporation meets these criteria with comparable electrical performance and identical package specifications, making it a direct functional equivalent for the SAC26.

Parameter Comparison

Engineering Selection Recommendations

Both the SAC26 and P6KE30A are active-status components with ROHS3 compliance and equivalent moisture sensitivity ratings (MSL 1 - Unlimited). Selection between these parts should be based on the following factors:

SAC26 (Littelfuse Inc.): Choose this part when Littelfuse-specific supply chain requirements or design specifications mandate the original manufacturer. Current inventory of 1,038 units supports immediate availability.

P6KE30A (Taiwan Semiconductor Corporation): This substitute offers superior electrical performance with higher peak pulse current (14.5A vs. 11.1A) and greater peak pulse power (600W vs. 500W) while maintaining compatible voltage parameters. The reverse standoff voltage of 25.6V and clamping voltage of 41.4V remain within acceptable operating margins for applications designed for the SAC26. Significantly higher inventory (25,200 units) provides enhanced supply security.

Both components are suitable for general-purpose transient voltage suppression applications and maintain identical through-hole axial package specifications.

Frequently Asked Questions (FAQ)

Q: Can the P6KE30A directly replace the SAC26 in existing designs?

A: Yes. Both components are unidirectional Zener-type TVS diodes with compatible voltage ratings and identical DO-15 axial package specifications. The P6KE30A's higher current and power ratings provide equal or superior performance for the same application envelope.

Q: What are the key electrical differences between these parts?

A: The P6KE30A has a slightly lower reverse standoff voltage (25.6V vs. 26V) and clamping voltage (41.4V vs. 42.3V), but higher peak pulse current (14.5A vs. 11.1A) and power dissipation (600W vs. 500W). These differences remain within acceptable substitution tolerances for general-purpose applications.

Q: Are package dimensions identical?

A: Yes. Both the SAC26 and P6KE30A use the DO-204AC (DO-15) axial through-hole package with identical mechanical specifications, allowing direct board-level substitution without layout modifications.

Q: Do both parts meet the same compliance standards?

A: Yes. Both components are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity ratings and REACH unaffected status, ensuring equivalent environmental and regulatory compliance.

Q: Which part should be selected for new designs?

A: Selection depends on supply chain strategy and performance requirements. The P6KE30A offers higher current and power ratings with superior inventory availability, while the SAC26 maintains Littelfuse manufacturer specifications if required by design standards or procurement policies.