SA11C-E3/73 Equivalent & Substitute Parts

Part Overview

The SA11C-E3/73 is a Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, designed for general-purpose transient protection applications. This component features an 11V reverse standoff voltage with a 20.1V maximum clamping voltage and 24.9A peak pulse current capability in a DO-204AC (DO-15) axial through-hole package.

The SA11C-E3/73 is classified as obsolete. Equivalent and substitute parts are available from active product lines that maintain electrical and mechanical compatibility, enabling continued system design and maintenance without circuit redesign.

Substiute Parts

SA11C-E3/73

Vishay General Semiconductor - Diodes DivisionIn Stock: 1196SA11C-E3/73 Datasheet

Current PartRFQ

SA11CA-E3/73

Vishay General Semiconductor - Diodes DivisionIn Stock: 32493SA11CA-E3/73 Datasheet

DirectRFQ

SA11CA

Taiwan Semiconductor CorporationIn Stock: 300126SA11CA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SA11C-E3/73 is determined by the following critical electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): 11V
• Voltage - Breakdown (Min): 12.2V
• Package / Case: DO-204AC (DO-15) axial through-hole
• Mounting Type: Through Hole
• Operating Temperature Range: -55°C to 175°C (TJ)
• RoHS Compliance: ROHS3 Compliant

Substitute parts must maintain identical reverse standoff voltage, breakdown voltage, package configuration, and thermal operating range. Variations in clamping voltage and peak pulse current are permissible within the same voltage class when the substitute part meets or exceeds the performance envelope of the original design.

Parameter Comparison

Engineering Selection Recommendations

Both SA11CA-E3/73 and SA11CA are active product alternatives to the obsolete SA11C-E3/73. Selection between these substitutes is based on availability, supply chain considerations, and packaging requirements:

SA11CA-E3/73 (Vishay General Semiconductor - Diodes Division): Maintains direct manufacturer lineage with the original part. Active product status ensures long-term availability and supply continuity. Identical electrical specifications with improved peak pulse current (27.5A vs. 24.9A) and reduced clamping voltage (18.2V vs. 20.1V), providing enhanced transient suppression performance.

SA11CA (Taiwan Semiconductor Corporation): Manufacturer-recommended equivalent with active product status. Supplied in Tape & Reel (TR) packaging, suitable for automated assembly environments. Electrical performance is equivalent to SA11CA-E3/73 with 28A peak pulse current and 18.2V clamping voltage. Significantly higher inventory availability (300,100 pcs) supports high-volume production requirements.

Both substitutes are ROHS3 compliant, REACH unaffected, and maintain the full operating temperature range of -55°C to 175°C (TJ).

Frequently Asked Questions (FAQ)

Q: Can SA11CA-E3/73 or SA11CA be used as direct replacements for SA11C-E3/73?

A: Yes. Both parts maintain identical reverse standoff voltage (11V), breakdown voltage (12.2V), and DO-204AC through-hole package configuration. The electrical performance envelope is compatible with the original design.

Q: What is the difference between SA11CA-E3/73 and SA11CA?

A: Both parts are electrically equivalent with identical voltage ratings and thermal operating range. The primary differences are manufacturer (Vishay vs. Taiwan Semiconductor Corporation) and packaging format (SA11CA-E3/73 is standard packaging; SA11CA is supplied in Tape & Reel). SA11CA offers significantly higher inventory availability.

Q: Why does SA11CA have lower clamping voltage (18.2V) compared to SA11C-E3/73 (20.1V)?

A: Both parts are within the same voltage class (11V reverse standoff) and meet the same breakdown voltage specification (12.2V minimum). The lower clamping voltage in SA11CA represents improved transient suppression performance, as it clamps transients to a lower peak voltage while maintaining the same peak pulse current capability or higher.

Q: Are there packaging considerations when substituting these parts?

A: All three parts use DO-204AC (DO-15) axial through-hole packages and are compatible with identical PCB layouts and assembly processes. SA11CA is available in Tape & Reel packaging for automated assembly; SA11C-E3/73 and SA11CA-E3/73 use standard packaging. Verify packaging format requirements for your assembly process.

Q: What compliance certifications apply to these substitute parts?

A: All three parts are ROHS3 compliant, REACH unaffected, and carry Moisture Sensitivity Level (MSL) 1 (Unlimited). No additional compliance verification is required for substitution.