SA11C-E3/54 Equivalent & Substitute Parts Reference

Part Overview

The SA11C-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 in through-hole applications using the DO-204AC (DO-15) axial package format.

The SA11C-E3/54 is classified as obsolete, which necessitates identification of equivalent and substitute components for ongoing design support and procurement. Active alternative parts are available from multiple manufacturers that maintain electrical and mechanical compatibility within the specified parameter ranges for this TVS diode category.

Substiute Parts

SA11C-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 932SA11C-E3/54 Datasheet

Current PartRFQ

SA11CA-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 16258SA11CA-E3/54 Datasheet

DirectRFQ

P6KE15CA

Fairchild SemiconductorIn Stock: 53432P6KE15CA Datasheet

MFR RecommendedRFQ

SA11CA

Taiwan Semiconductor CorporationIn Stock: 300126SA11CA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SA11C-E3/54 are qualified based on the following electrical and mechanical compatibility criteria:

Primary Substitution Criteria:

• Voltage - Reverse Standoff (Typ): 11V to 12.8V range
• Voltage - Breakdown (Min): 12.2V to 14.3V range
• Voltage - Clamping (Max) @ Ipp: 18.2V to 21.2V range
• Current - Peak Pulse (10/1000µs): minimum 24.9A
• Power - Peak Pulse: minimum 500W
• Mounting Type: Through Hole
• Package / Case: DO-204AC or DO-15 axial configuration
• Type: Zener diode, bidirectional, single channel
• Operating Temperature Range: -55°C to 175°C or equivalent

Mechanical Compatibility: All substitute parts maintain identical through-hole axial package geometry (DO-204AC / DO-15), ensuring direct mechanical interchangeability in existing PCB layouts without modification.

Compliance Baseline: All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) rating, consistent with the original component specifications.

Parameter Comparison

Engineering Selection Recommendations

SA11CA-E3/54 (Vishay - Direct Manufacturer Alternative)

This part is the direct Vishay equivalent with active product status. It maintains identical reverse standoff voltage (11V) and breakdown voltage (12.2V) specifications. The clamping voltage is reduced to 18.2V with increased peak pulse current (27.5A), representing improved transient suppression performance within the same power envelope. ROHS3 compliance and MSL 1 rating are maintained. This is the primary recommended substitute for direct replacement in existing designs.

SA11CA (Taiwan Semiconductor Corporation - Cross-Manufacturer Alternative)

This part provides electrical equivalence with identical voltage ratings (11V standoff, 12.2V breakdown, 18.2V clamping) and comparable peak pulse current (28A). It maintains ROHS3 compliance and MSL 1 rating. The part is available in high inventory volume (300,100 pcs). This option is suitable for applications where multi-source qualification is required or where Taiwan Semiconductor Corporation components are preferred in the supply chain.

P6KE15CA (Fairchild Semiconductor - Higher Performance Alternative)

This part operates at a higher voltage class (12.8V standoff, 14.3V breakdown) with increased clamping voltage (21.2V) and peak pulse current (29A). Power dissipation capability is increased to 600W. The operating temperature minimum is -50°C (versus -55°C for other options). This part is suitable for applications where higher transient energy absorption is required or where the higher voltage ratings provide additional design margin. RoHS and MSL compliance status are not specified in the provided data.

Product Status Consideration:

All three substitute parts maintain active product status, ensuring long-term availability and supply chain stability compared to the obsolete SA11C-E3/54.

Frequently Asked Questions (FAQ)

Q: Can SA11CA-E3/54 be used as a direct replacement for SA11C-E3/54?

A: Yes. Both parts share identical reverse standoff voltage (11V) and breakdown voltage (12.2V) specifications. The SA11CA-E3/54 features improved clamping voltage (18.2V versus 20.1V) and higher peak pulse current (27.5A versus 24.9A), representing enhanced performance within the same power rating. Both use the DO-204AC (DO-15) axial package with identical mechanical compatibility.

Q: What is the difference between SA11CA-E3/54 and SA11CA from Taiwan Semiconductor?

A: Both parts share identical electrical specifications (11V standoff, 12.2V breakdown, 18.2V clamping, 28A peak pulse current). The primary differences are manufacturer (Vishay versus Taiwan Semiconductor Corporation) and packaging format (Cut Tape versus Tape & Reel). Electrical performance and mechanical compatibility are equivalent. Selection depends on supply chain preferences and inventory availability.

Q: When should P6KE15CA be selected instead of the SA11CA variants?

A: P6KE15CA operates at higher voltage ratings (12.8V standoff, 14.3V breakdown, 21.2V clamping) with increased peak pulse current (29A) and power dissipation (600W). This part is selected when circuit protection requirements demand higher transient energy absorption or when the higher voltage ratings provide necessary design margin. The higher operating temperature minimum (-50°C) should be verified against application requirements.

Q: Are all substitute parts mechanically compatible with existing PCB layouts?

A: Yes. All substitute parts use the DO-204AC (DO-15) axial through-hole package format with identical lead spacing and mechanical dimensions. No PCB layout modifications are required for substitution.

Q: Do all substitute parts meet RoHS and MSL requirements?

A: SA11CA-E3/54 and SA11CA (Taiwan Semiconductor) both maintain ROHS3 compliance and MSL 1 (Unlimited) rating, matching the original SA11C-E3/54 specifications. P6KE15CA RoHS and MSL compliance status are not specified in the provided technical data and should be verified with the manufacturer or distributor before selection for applications with specific compliance requirements.

Q: What is the inventory status of substitute parts?

A: SA11CA-E3/54 has 16,184 pcs in stock. SA11CA (Taiwan Semiconductor) has 300,100 pcs in stock. P6KE15CA has 53,374 pcs in stock. All parts are available as new original components.