SA7.5C-E3/54 Equivalent & Substitute Parts

Part Overview

The SA7.5C-E3/54 is a Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, part of the TransZorb® series. This component is designed for general-purpose transient voltage suppression applications with a 7.5V reverse standoff voltage and 14.3V maximum clamping voltage. The part is currently listed as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

SA7.5C-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 948SA7.5C-E3/54 Datasheet

Current PartRFQ

SA7.5CA-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 32366SA7.5CA-E3/54 Datasheet

DirectRFQ

SA7.5CA

Taiwan Semiconductor CorporationIn Stock: 5472SA7.5CA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SA7.5C-E3/54 are qualified based on the following critical parameters:

• Reverse standoff voltage of 7.5V (typical)
• Breakdown voltage minimum of 8.33V
• Package compatibility: DO-204AC (DO-15) axial through-hole configuration
• Single bidirectional channel
• Operating temperature range of -55°C to 175°C
• Peak pulse power rating of 500W
• RoHS3 compliance and REACH unaffected status

The identified substitutes maintain these core electrical and mechanical specifications, ensuring functional equivalence in circuit applications. Variations in clamping voltage and peak pulse current within the specified ranges do not affect substitutability for general-purpose transient suppression.

Parameter Comparison

Engineering Selection Recommendations

SA7.5CA-E3/54 (Vishay) is the direct substitute for SA7.5C-E3/54, maintaining identical electrical specifications while offering active product status and higher current capacity (38.8A vs 35A). This part is available in Tape & Reel packaging with 32,300 units in stock.

SA7.5CA (Taiwan Semiconductor Corporation) is the manufacturer-recommended alternative, providing equivalent electrical performance with 40A peak pulse current capability. This part is also active and ROHS3 compliant with 5,400 units available.

Both substitutes are suitable for direct replacement in applications requiring the SA7.5C-E3/54, with the selection between them determined by packaging requirements (Tape & Reel vs. standard packaging) and supply chain availability.

Frequently Asked Questions (FAQ)

Q: Can SA7.5CA-E3/54 directly replace SA7.5C-E3/54 in existing designs?

A: Yes. Both parts share identical reverse standoff voltage (7.5V), breakdown voltage (8.33V), operating temperature range (-55°C to 175°C), and DO-204AC package configuration. The lower clamping voltage (12.9V vs 14.3V) and higher peak pulse current (38.8A vs 35A) of the substitute are within acceptable substitution parameters for general-purpose transient suppression.

Q: What is the difference between SA7.5CA-E3/54 and SA7.5CA?

A: SA7.5CA-E3/54 is supplied in Tape & Reel packaging with higher inventory availability (32,300 units). SA7.5CA is supplied in standard packaging with lower inventory (5,400 units). Electrical specifications are equivalent, with SA7.5CA providing 40A peak pulse current versus 38.8A for the SA7.5CA-E3/54.

Q: Are all substitutes RoHS3 compliant?

A: Yes. SA7.5CA-E3/54 and SA7.5CA are both ROHS3 compliant and REACH unaffected, matching the compliance status of the original SA7.5C-E3/54.

Q: Does the package type affect substitutability?

A: No. All listed substitutes use the DO-204AC (DO-15) axial through-hole package, ensuring mechanical and electrical compatibility with existing PCB layouts and assembly processes.

Q: Why is the clamping voltage lower in the substitutes?

A: The SA7.5CA variants have a maximum clamping voltage of 12.9V compared to 14.3V for the SA7.5C-E3/54. Both values fall within the acceptable range for 7.5V standoff voltage TVS diodes and do not affect substitutability for general-purpose applications.