SA54C-E3/54 Equivalent & Substitute Parts

Part Overview

The SA54C-E3/54 is a Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, designed for general-purpose transient voltage protection applications. This component features a 54V reverse standoff voltage with a 96.3V maximum clamping voltage and 5.2A peak pulse current capability in a through-hole DO-204AC (DO-15) axial package. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

SA54C-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 773SA54C-E3/54 Datasheet

Current PartRFQ

SA54CA-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 1150SA54CA-E3/54 Datasheet

DirectRFQ

SA54CA

Taiwan Semiconductor CorporationIn Stock: 2236SA54CA Datasheet

MFR RecommendedRFQ

SA54CA-TP

Micro Commercial CoIn Stock: 816SA54CA-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SA54C-E3/54 are qualified based on the following critical parameters that determine functional equivalence:

• Voltage - Reverse Standoff (Typ): 54V
• Voltage - Breakdown (Min): 60V
• Current - Peak Pulse (10/1000µs): minimum 5.2A
• Power - Peak Pulse: 500W
• Operating Temperature Range: -55°C ~ 175°C (TJ)
• Mounting Type: Through Hole
• Package / Case: DO-204AC, DO-15, Axial
• Type: Zener
• Bidirectional Channels: 1

The substitute parts listed maintain these core electrical and mechanical specifications, ensuring direct functional compatibility in circuit applications. Variations in clamping voltage (within the specified range) and peak pulse current (at or above the minimum requirement) are acceptable within the substitution criteria.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts maintain the critical electrical parameters required for functional equivalence with the SA54C-E3/54. Selection among the available substitutes should be based on the following factors:

SA54CA-E3/54 (Vishay General Semiconductor): This direct Vishay substitute maintains the same manufacturer lineage as the original part. It is actively produced and carries ROHS3 compliance and MSL 1 rating. The clamping voltage is reduced to 87.1V with increased peak pulse current of 5.7A, both within acceptable substitution parameters.

SA54CA (Taiwan Semiconductor Corporation): This manufacturer-recommended substitute is actively produced with the highest peak pulse current specification of 6A. It maintains all critical electrical and thermal parameters with ROHS3 compliance and MSL 1 rating.

SA54CA-TP (Micro Commercial Co): This actively produced substitute meets all core electrical specifications with 5.9A peak pulse current. Compliance documentation (RoHS and MSL) is not specified in the provided data.

All substitutes are suitable for general-purpose transient voltage protection applications and are compatible with existing through-hole PCB designs using DO-15 axial package footprints.

Frequently Asked Questions (FAQ)

Q: Can SA54CA-E3/54, SA54CA, or SA54CA-TP be used interchangeably with SA54C-E3/54?

A: Yes. All three substitute parts maintain the required reverse standoff voltage of 54V, breakdown voltage minimum of 60V, and operating temperature range of -55°C to 175°C. The clamping voltage and peak pulse current specifications of the substitutes meet or exceed the minimum requirements for functional equivalence in general-purpose transient voltage suppression applications.

Q: What is the difference in clamping voltage between the main part and the substitutes?

A: The SA54C-E3/54 specifies a maximum clamping voltage of 96.3V at peak pulse current. All three substitutes specify 87.1V maximum clamping voltage. Both values are within the acceptable range for the 54V reverse standoff voltage class and do not affect functional compatibility in circuit applications.

Q: Are there differences in peak pulse current ratings?

A: Yes. The SA54C-E3/54 is rated for 5.2A peak pulse current. The substitutes are rated at 5.7A (SA54CA-E3/54), 6A (SA54CA), and 5.9A (SA54CA-TP). All substitute ratings meet or exceed the original specification, providing equivalent or improved transient suppression capability.

Q: Do all substitutes support the same operating temperature range?

A: Yes. All substitute parts maintain the -55°C to 175°C (TJ) operating temperature range specified for the SA54C-E3/54.

Q: Are there packaging differences between the substitutes?

A: All substitutes use through-hole axial mounting in DO-15 package format. SA54CA-E3/54 and SA54CA are specified for DO-204AC (DO-15) package, while SA54CA-TP is specified for DO-15 package. These designations refer to the same physical package format and are mechanically compatible.

Q: What is the compliance status of each substitute?

A: SA54CA-E3/54 and SA54CA both carry ROHS3 compliance and MSL 1 (Unlimited) ratings. SA54CA-TP compliance documentation is not specified in the provided data. All three maintain REACH Unaffected status.