SAC7.0 Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The SAC7.0 is a unidirectional Zener-type transient voltage suppressor manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This through-hole component operates across a wide temperature range (-55°C to 175°C) and provides peak pulse power dissipation of 500W with a 38A peak pulse current rating. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Equivalent and substitute parts are identified when they maintain identical electrical performance parameters and mechanical compatibility within the DO-204AC (DO-15) axial package format. Substitutes become necessary due to inventory availability, supply chain considerations, or design flexibility requirements while maintaining circuit performance specifications.

Substiute Parts

SAC7.0

Littelfuse Inc.In Stock: 4868SAC7.0 Datasheet

Current PartRFQ

SAC7.0-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 3738SAC7.0-E3/54 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SAC7.0 is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 7V
• Voltage - Breakdown (Min): 8.33V
• Voltage - Clamping (Max) @ Ipp: 12.6V
• Current - Peak Pulse (10/1000µs): 38A
• Power - Peak Pulse: 500W
• Package / Case: DO-204AC (DO-15), Axial
• Mounting Type: Through Hole
• Type: Zener
• Unidirectional Channels: 1

The SAC7.0-E3/54 manufactured by Vishay General Semiconductor - Diodes Division qualifies as a direct substitute because it maintains identical electrical specifications across all voltage, current, and power parameters while preserving the same through-hole axial package format. Both parts are Zener-type unidirectional TVS diodes with matching performance characteristics for general-purpose transient suppression applications.

Parameter Comparison

Engineering Selection Recommendations

Both the SAC7.0 (Littelfuse Inc.) and SAC7.0-E3/54 (Vishay General Semiconductor - Diodes Division) are active production components with full ROHS3 compliance and EAR99 export classification. Selection between these parts should be based on:

• Inventory availability and lead time requirements
• Supply chain preferences and established vendor relationships
• Moisture sensitivity level (MSL 1 - Unlimited for both parts)
• REACH compliance status (SAC7.0 is REACH Affected; SAC7.0-E3/54 is REACH Unaffected)

For applications subject to REACH regulations, the SAC7.0-E3/54 may be the preferred selection. Both parts are electrically and mechanically interchangeable for through-hole PCB assembly in general-purpose transient voltage suppression circuits.

Frequently Asked Questions (FAQ)

Q: Can SAC7.0-E3/54 be used as a direct replacement for SAC7.0 in existing designs?

A: Yes. The SAC7.0-E3/54 is a direct electrical and mechanical equivalent. All voltage ratings, current ratings, power dissipation, operating temperature range, and package format are identical. No circuit modifications are required.

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

A: Substitution eligibility is determined by matching: reverse standoff voltage (7V), breakdown voltage (8.33V minimum), clamping voltage (12.6V maximum at Ipp), peak pulse current (38A), peak pulse power (500W), operating temperature range (-55°C to 175°C), package format (DO-204AC/DO-15 axial), and mounting type (through hole).

Q: Are there any compliance differences between SAC7.0 and SAC7.0-E3/54?

A: Both parts are ROHS3 compliant with EAR99 export classification and identical HTSUS codes. The primary difference is REACH status: SAC7.0 is REACH Affected while SAC7.0-E3/54 is REACH Unaffected. For applications in REACH-regulated regions, verify compliance requirements with your supply chain.

Q: What is the moisture sensitivity level (MSL) for these parts?

A: Both SAC7.0 and SAC7.0-E3/54 have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage, handling, or assembly processes.

Q: Can these parts be used interchangeably in automated PCB assembly?

A: Yes. Both parts use identical through-hole axial package format (DO-204AC/DO-15) and are suitable for automated insertion equipment. No tooling or process changes are required when switching between these parts.