SA7.5C-E3/73 Equivalent & Substitute Parts

Part Overview

The SA7.5C-E3/73 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 7.5V reverse standoff voltage with a 14.3V maximum clamping voltage and 35A peak pulse current capability in a through-hole DO-204AC (DO-15) axial package. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new design implementations.

Substiute Parts

SA7.5C-E3/73

Vishay General Semiconductor - Diodes DivisionIn Stock: 833SA7.5C-E3/73 Datasheet

Current PartRFQ

SA7.5CA-E3/73

Vishay General Semiconductor - Diodes DivisionIn Stock: 32355SA7.5CA-E3/73 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-E3/73 are qualified based on the following critical parameters that determine functional equivalence:

• Voltage - Reverse Standoff (Typ): 7.5V
• Voltage - Breakdown (Min): 8.33V
• Package / Case: DO-204AC, DO-15, Axial
• Mounting Type: Through Hole
• Type: Zener
• Bidirectional Channels: 1
• Operating Temperature Range: -55°C to 175°C (TJ)

Substitute parts must maintain identical standoff voltage, breakdown voltage, package configuration, and mounting characteristics. Variations in clamping voltage and peak pulse current are permissible within the same product family when the core protection parameters remain consistent.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts maintain full electrical and mechanical compatibility with the SA7.5C-E3/73 across all critical parameters. Selection between substitutes should be based on the following factors:

SA7.5CA-E3/73 (Vishay General Semiconductor - Diodes Division) is the direct manufacturer equivalent from Vishay, offering active product status with established supply chain continuity. This part provides improved clamping performance (12.9V versus 14.3V) and higher peak pulse current (38.8A versus 35A), delivering enhanced transient suppression characteristics within the same thermal and package specifications.

SA7.5CA (Taiwan Semiconductor Corporation) provides an alternative source with active product status and comparable electrical performance (12.9V clamping, 40A peak pulse current). This part is supplied in Tape & Reel packaging, suitable for automated assembly environments.

Both substitute parts are ROHS3 compliant, REACH unaffected, and maintain the full operating temperature range of the original component. All three parts share identical reverse standoff voltage (7.5V), breakdown voltage (8.33V), and power dissipation capability (500W peak pulse).

Frequently Asked Questions (FAQ)

Q: Can SA7.5CA-E3/73 or SA7.5CA directly replace SA7.5C-E3/73 in existing designs?

A: Yes. Both substitute parts maintain identical reverse standoff voltage (7.5V), breakdown voltage (8.33V), package configuration (DO-204AC, DO-15, Axial), and mounting type (through hole). The lower clamping voltage (12.9V versus 14.3V) and higher peak pulse current (38.8A or 40A versus 35A) represent improved performance characteristics within the same protection class.

Q: What is the difference between SA7.5CA-E3/73 and SA7.5CA?

A: SA7.5CA-E3/73 is manufactured by Vishay General Semiconductor - Diodes Division and supplied in standard packaging. SA7.5CA is manufactured by Taiwan Semiconductor Corporation and supplied in Tape & Reel (TR) packaging. Both parts are electrically equivalent with identical voltage and temperature specifications. The packaging difference affects handling and assembly methods only.

Q: Are all three parts RoHS and REACH compliant?

A: Yes. SA7.5C-E3/73, SA7.5CA-E3/73, and SA7.5CA are all ROHS3 compliant and REACH unaffected. All parts carry Moisture Sensitivity Level (MSL) 1 (Unlimited), indicating no moisture sensitivity restrictions.

Q: Why is the clamping voltage lower in the substitute parts?

A: The substitute parts (SA7.5CA variants) feature a maximum clamping voltage of 12.9V compared to the original 14.3V. This represents improved transient suppression performance, as lower clamping voltage provides tighter voltage regulation during transient events while maintaining the same 7.5V reverse standoff voltage and 8.33V minimum breakdown voltage.

Q: Can I use the Tape & Reel packaged SA7.5CA in manual assembly applications?

A: The SA7.5CA supplied in Tape & Reel packaging is optimized for automated assembly processes. For manual assembly applications, SA7.5CA-E3/73 in standard packaging may be more practical, though both parts use identical through-hole DO-204AC (DO-15) axial leads suitable for manual insertion.