SAC5.0 Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The SAC5.0 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 temperature range of -55°C to 175°C and is RoHS3 compliant. The part is currently in active production status with 17,200 units in stock. Substitute parts are necessary when primary inventory is unavailable or when alternative manufacturers' components meet identical electrical and mechanical specifications for circuit protection requirements.

Substiute Parts

SAC5.0

Littelfuse Inc.In Stock: 17301SAC5.0 Datasheet

Current PartRFQ

SAC5.0-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 1825SAC5.0-E3/54 Datasheet

DirectRFQ

SA5.0A-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 12221SA5.0A-E3/54 Datasheet

MFR RecommendedRFQ

SA5.0A-TP

Micro Commercial CoIn Stock: 7340SA5.0A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SAC5.0 TVS diode is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Reverse standoff voltage: 5V (typical)
• Unidirectional channel configuration: 1 channel
• Zener diode type classification
• General-purpose application category
• Through-hole mounting technology
• DO-204AC or DO-15 package compatibility
• Operating temperature range: -55°C to 175°C minimum
• RoHS3 compliance requirement

Acceptable Variation Parameters:

• Voltage - Breakdown (Min): 6.4V to 7.6V range
• Voltage - Clamping (Max) @ Ipp: 9.2V to 10V range
• Current - Peak Pulse (10/1000µs): 44A to 55.4A range
• Power - Peak Pulse: 500W (constant across all substitutes)

The substitute parts listed below maintain electrical performance within these defined tolerances while preserving circuit protection functionality.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain active product status and full RoHS3 compliance, ensuring regulatory conformance for new designs and production environments. The SAC5.0-E3/54 (Vishay) provides direct electrical equivalence with identical breakdown voltage (7.6V minimum) and clamping voltage (10V maximum) specifications, making it the primary substitute when exact parameter matching is required.

The SA5.0A-E3/54 and SA5.0A-TP alternatives operate within the acceptable variation range with lower breakdown voltage (6.4V minimum) and clamping voltage (9.2V maximum), while delivering higher peak pulse current capacity (54.3A and 55.4A respectively). These components are suitable for applications where the reduced clamping voltage and increased current handling provide equivalent or improved circuit protection performance.

All substitute parts maintain the same 500W peak pulse power rating, through-hole mounting configuration, and -55°C to 175°C operating temperature range, ensuring direct PCB compatibility and thermal performance equivalence.

Frequently Asked Questions (FAQ)

Q: Can SAC5.0-E3/54 be used as a direct replacement for SAC5.0?

A: Yes. The SAC5.0-E3/54 (Vishay) maintains identical electrical specifications including 5V reverse standoff voltage, 7.6V minimum breakdown voltage, 10V maximum clamping voltage, and 44A peak pulse current. Both components use DO-204AC/DO-15 axial packages and operate across -55°C to 175°C. This part provides direct substitution without circuit modification.

Q: What is the difference between SA5.0A-E3/54 and the original SAC5.0?

A: The SA5.0A-E3/54 maintains the 5V reverse standoff voltage but operates with 6.4V minimum breakdown voltage (versus 7.6V) and 9.2V maximum clamping voltage (versus 10V). Peak pulse current increases to 54.3A from 44A. These parameters remain within acceptable substitution tolerances for general-purpose TVS applications. Package and temperature range are identical.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts—SAC5.0-E3/54, SA5.0A-E3/54, and SA5.0A-TP—carry RoHS3 compliance certification with MSL 1 (Unlimited) moisture sensitivity level, matching the original SAC5.0 specifications.

Q: Can SA5.0A-TP be used in place of SAC5.0?

A: Yes. The SA5.0A-TP (Micro Commercial Co) meets substitution criteria with 5V reverse standoff voltage, 6.4V minimum breakdown voltage, 9.2V maximum clamping voltage, and 55.4A peak pulse current. The component uses DO-15 axial packaging and operates across -55°C to 175°C, providing functional equivalence for general-purpose overvoltage protection circuits.

Q: What packaging options are available for these TVS diodes?

A: All listed parts use through-hole axial packaging in DO-204AC or DO-15 configurations. These packages are mechanically and electrically interchangeable for PCB mounting, with identical lead spacing and soldering requirements.

Q: How do the peak pulse current ratings affect component selection?

A: The original SAC5.0 handles 44A peak pulse current. Substitute parts SA5.0A-E3/54 (54.3A) and SA5.0A-TP (55.4A) provide higher current capacity within the same 500W power dissipation envelope. Higher current ratings do not negatively impact circuit performance and may provide additional margin in high-transient environments.