SAC45 Transient Voltage Suppressor Equivalent & Substitute Parts

Part Overview

The SAC45 is an active Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose voltage transient protection applications. This through-hole component operates across a temperature range of -55°C to 175°C and is RoHS3 compliant. Finding equivalent and substitute parts may be necessary due to inventory constraints, supply chain considerations, or design flexibility requirements while maintaining identical electrical and mechanical performance specifications.

Substiute Parts

SAC45

Littelfuse Inc.In Stock: 4625SAC45 Datasheet

Current PartRFQ

P6KE56A

Fairchild SemiconductorIn Stock: 2374P6KE56A Datasheet

MFR RecommendedRFQ

SAC45-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 4810SAC45-E3/54 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SAC45 are classified based on strict electrical and mechanical parameter alignment:

Direct Manufacturer Equivalent (SAC45-E3/54): This part maintains identical electrical specifications including 45V reverse standoff voltage, 77V clamping voltage, 6.8A peak pulse current, and 500W peak pulse power. The package configuration (DO-204AC, DO-15, Axial) and mounting type (Through Hole) are identical. Operating temperature range (-55°C ~ 175°C) and RoHS3 compliance are maintained. This represents a direct substitute with no performance deviation.

Manufacturer-Recommended Substitute (P6KE56A): This part is listed as a manufacturer-recommended alternative. While specific electrical parameters are not fully detailed in the provided data, it is classified as a Transient Voltage Suppressor diode and shares the same ECCN (EAR99) and HTSUS (8541.10.0080) classifications, indicating regulatory and trade alignment with the SAC45.

Parameter Comparison

Engineering Selection Recommendations

SAC45-E3/54 (Direct Equivalent): This part is the primary substitute option. It maintains all specified electrical parameters, identical package configuration, and matching operating temperature range. Both the main part and this equivalent are Active products with ROHS3 compliance and identical regulatory classifications (ECCN: EAR99, HTSUS: 8541.10.0080). This part can be selected with no design modifications or performance trade-offs.

P6KE56A (Manufacturer-Recommended Substitute): This part is designated as a manufacturer-recommended alternative by Littelfuse Inc. It shares identical regulatory and trade classifications (ECCN: EAR99, HTSUS: 8541.10.0080) and maintains Active product status. Detailed electrical and mechanical specifications for this part are not provided in the available data; therefore, compatibility confirmation through manufacturer documentation is necessary before selection.

Frequently Asked Questions (FAQ)

Q: Can SAC45-E3/54 be used as a direct replacement for SAC45? A: Yes. The SAC45-E3/54 maintains identical electrical specifications (45V standoff, 77V clamping, 6.8A peak pulse current, 500W peak power), identical package configuration (DO-204AC, DO-15, Axial), identical mounting type (Through Hole), and identical operating temperature range (-55°C ~ 175°C). No circuit modifications are required.

Q: What is the difference between SAC45 and SAC45-E3/54? A: Both parts are functionally equivalent with identical electrical and mechanical parameters. The primary difference is the manufacturer: SAC45 is manufactured by Littelfuse Inc., while SAC45-E3/54 is manufactured by Vishay General Semiconductor - Diodes Division. Both are RoHS3 compliant and Active products.

Q: Is P6KE56A a suitable substitute for SAC45? A: P6KE56A is listed as a manufacturer-recommended substitute by Littelfuse Inc. and shares the same regulatory classifications (ECCN: EAR99, HTSUS: 8541.10.0080). However, complete electrical and mechanical specifications for P6KE56A are not provided in the available reference data. Verification against detailed datasheets is required to confirm parameter compatibility before implementation.

Q: What package types are compatible with SAC45? A: The SAC45 uses DO-204AC (also designated DO-15) in an Axial through-hole configuration. Substitute parts must maintain this identical package specification to ensure mechanical compatibility with existing PCB designs and assembly processes.

Q: Are all substitute parts RoHS3 compliant? A: SAC45 and SAC45-E3/54 are both confirmed as ROHS3 compliant. RoHS compliance status for P6KE56A is not specified in the provided data.