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Home > Products > Circuit Protection > Transient Voltage Suppressors (TVS) > TVS Diodes

Vishay General Semiconductor - Diodes Division SA11-E3/54

Name: SA11-E3/54
Brand: Vishay General Semiconductor - Diodes Division
SKU: SA11-E3/54
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SA11-E3/54

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: TVS Diodes

Package:: DO-204AC, DO-15, Axial

Datasheet:: SA11-E3/54.pdf

Description:: TVS DIODE 11VWM 20.1VC DO204AC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

SA11-E3/54 from Vishay General Semiconductor is a uni-directional Transient Voltage Suppressor (TVS) diode in DO-204AC (DO-15) package, designed for overvoltage protection of sensitive electronics. It features a 11 V stand-off voltage (V_WM), 12.2–13.5 V breakdown voltage (V_BR) at 1 mA, 500 W peak pulse power (10/1000 µs), clamping voltage of 18.2 V at 27.5 A, and AEC-Q101 qualification for automotive-grade reliability.

For engineers reviewing the SA11-E3/54 datasheet, SA11-E3/54 pinout, SA11-E3/54 application, or SA11-E3/54 equivalent, this component serves as a primary clamping device for DC power rails, I/O lines, and MOSFET gate protection where fast response (<1 ns), low clamping ratio, and robust surge handling (70 A IFSM) are required.

Technical Context

The SA11-E3/54 operates as a uni-directional avalanche diode with glass-passivated junction, enabling precise voltage clamping during transient events such as inductive load switching or ESD. Its 10/1000 µs waveform rating supports repetitive surge duty cycles up to 0.01 %, and its 175 °C maximum junction temperature ensures operation in under-hood automotive environments.

It exhibits a forward voltage of 3.5 V at 100 A (uni-directional only), low incremental surge resistance, and excellent clamping capability with a clamping ratio (V_C/V_BR) of ~1.43. Polarity is marked by a cathode band, and terminals are matte tin-plated per J-STD-002 and JESD 22-B102.

Key Specifications

Parameter	Value and Actual Design Meaning
V_WM	11 V - Maximum continuous reverse operating voltage before clamping begins
V_BR (min/max)	12.2 V / 13.5 V at 1 mA - Ensures reliable avalanche conduction onset within tight tolerance
V_C @ I_PPM	18.2 V at 27.5 A - Limits downstream voltage stress during 500 W transients
P_PPM	500 W (10/1000 µs) - Handles high-energy surges common in automotive and industrial systems
I_FSM	70 A (10 ms half-sine) - Withstands repeated inrush or fault currents without degradation
T_J max	175 °C - Enables use in high-temperature environments including engine control units
Leakage I_D	1.0 µA at 11 V - Minimizes standby power loss in battery-powered applications

Pinout & Package

Package: DO-204AC (DO-15), axial-leaded, molded epoxy case meeting UL 94 V-0; RoHS-compliant (E3 suffix), commercial grade; cathode indicated by color band.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry / transient return path	Connected to protected line's low-side or ground reference during clamping
Cathode (banded end)	Avalanche conduction node / clamping output	Connected to protected line's high-side (e.g., +12 V rail); defines polarity and clamping threshold

Key Features

Feature	Design Value
Glass passivated chip junction	Enables stable, repeatable avalanche characteristics and long-term reliability under thermal cycling
500 W peak pulse power (10/1000 µs)	Protects against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3 surges
AEC-Q101 qualified	Validated for automotive applications including powertrain, body control, and ADAS modules
Low clamping voltage (18.2 V @ 27.5 A)	Reduces stress on downstream 20 V-rated MOSFETs and logic ICs during transients
Solder dip rated 275 °C for 10 s	Supports standard wave and reflow soldering without parametric shift or delamination

Applications

Automotive Power Rail Protection	Industrial Sensor Interface Protection
Use Scenario: Protecting 12 V supply lines in engine control units (ECUs) from load dump and alternator transients. IC Role / Device Role / Timing Role: Uni-directional TVS clamping device placed between battery input and LDO/regulator input. Use Value: Clamps transients to ≤18.2 V, preventing damage to 20 V-rated regulators and microcontrollers while surviving 70 A surge peaks.	Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to PLC I/O modules. IC Role / Device Role / Timing Role: Front-end transient suppressor on signal lines exposed to field wiring noise and inductive coupling. Use Value: Responds in <1 ns to clamp ±1 kV ESD or 400 V surge events, preserving signal integrity and ADC accuracy.
MOSFET Gate Protection	Consumer DC Adapter Input Stage
Use Scenario: Shielding N-channel high-side MOSFET gates driven by PWM controllers in motor drives. IC Role / Device Role / Timing Role: Low-capacitance clamping diode across gate-source to absorb Miller-induced voltage spikes. Use Value: Limits gate-source voltage to ≤18.2 V, preventing oxide breakdown while adding negligible capacitance to high-speed switching nodes.	Use Scenario: Input-stage surge suppression in wall-mounted AC/DC adapters for smart home devices. IC Role / Device Role / Timing Role: Primary TVS on secondary-side DC output (e.g., 12 V or 19 V) before USB-PD or buck converter. Use Value: Absorbs 500 W lightning-induced surges per IEC 61000-4-5, maintaining output regulation and avoiding brownout resets.

Automotive Power Rail Protection

Industrial Sensor Interface Protection

Use Scenario: Protecting 12 V supply lines in engine control units (ECUs) from load dump and alternator transients.

IC Role / Device Role / Timing Role: Uni-directional TVS clamping device placed between battery input and LDO/regulator input.

Use Value: Clamps transients to ≤18.2 V, preventing damage to 20 V-rated regulators and microcontrollers while surviving 70 A surge peaks.

Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to PLC I/O modules.

IC Role / Device Role / Timing Role: Front-end transient suppressor on signal lines exposed to field wiring noise and inductive coupling.

Use Value: Responds in <1 ns to clamp ±1 kV ESD or 400 V surge events, preserving signal integrity and ADC accuracy.

MOSFET Gate Protection

Consumer DC Adapter Input Stage

Use Scenario: Shielding N-channel high-side MOSFET gates driven by PWM controllers in motor drives.

IC Role / Device Role / Timing Role: Low-capacitance clamping diode across gate-source to absorb Miller-induced voltage spikes.

Use Value: Limits gate-source voltage to ≤18.2 V, preventing oxide breakdown while adding negligible capacitance to high-speed switching nodes.

Use Scenario: Input-stage surge suppression in wall-mounted AC/DC adapters for smart home devices.

IC Role / Device Role / Timing Role: Primary TVS on secondary-side DC output (e.g., 12 V or 19 V) before USB-PD or buck converter.

Use Value: Absorbs 500 W lightning-induced surges per IEC 61000-4-5, maintaining output regulation and avoiding brownout resets.

Equivalent & Alternatives

The following parts are listed as comparable options for similar transient voltage suppression applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMAJ11A-E3/5T	Same V_WM (11 V), identical DO-214AC package, 400 W P_PPM, higher V_C (18.1 V @ 24.4 A)	Lower peak power rating limits use in high-energy automotive load dump scenarios	Select when board space requires SMD and surge energy is ≤400 W
1N6105A	Same DO-204AC package, V_WM = 11 V, but lower P_PPM = 300 W and non-AEC-Q101 rated	Lacks automotive qualification and reduced surge margin; suitable only for commercial-grade equipment	Choose for cost-sensitive consumer applications where AEC-Q101 is not required

Compared with SMAJ11A-E3/5T and 1N6105A, the SA11-E3/54 delivers higher 500 W surge capacity and AEC-Q101 validation-critical for automotive and industrial designs requiring sustained reliability under repetitive transients.

Availability

SA11-E3/54 is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, MOSFET gate protection circuits, and consumer DC adapter input stages requiring stable component supply and full traceability.

Supply support for SA11-E3/54 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, and protection devices with emphasis on reliability, efficiency, and automotive-grade qualification.

The SAxxA series is part of Vishay's TRANSZORB® TVS family, engineered specifically for robust, low-clamping overvoltage protection in harsh electrical environments including automotive, industrial, and telecom infrastructure.

FAQ

What is the clamping voltage of SA11-E3/54 and how is it measured?

The SA11-E3/54 has a maximum clamping voltage (V_C) of 18.2 V at a peak pulse current (I_PPM) of 27.5 A, tested with a 10/1000 µs waveform. This value represents the upper limit of voltage seen across the device during a standardized surge event and is critical for ensuring downstream components remain within their absolute maximum ratings. The SA11-E3/54 maintains this clamping performance across its full operating temperature range.

Is SA11-E3/54 suitable for automotive applications?

Yes, SA11-E3/54 is AEC-Q101 qualified and explicitly rated for automotive use. Its 175 °C maximum junction temperature, 70 A non-repetitive surge current capability, and glass-passivated junction ensure reliability in under-hood environments subject to thermal cycling and high-energy transients like load dump. The SA11-E3/54 is commonly deployed in body control modules, lighting drivers, and power distribution units.

What does the "E3/54" suffix mean in SA11-E3/54?

The "E3" suffix indicates RoHS-compliant, commercial-grade construction with matte tin-plated leads meeting J-STD-002 and JESD 22-B102 solderability standards; "/54" denotes the preferred package code for 13-inch paper tape and reel packaging with a base quantity of 4000 units. This ordering format ensures consistent logistics and assembly compatibility across SMT and through-hole production lines.

How does SA11-E3/54 differ from bi-directional TVS diodes like SA11CA?

The SA11-E3/54 is uni-directional and features a cathode band for polarity identification, enabling asymmetric clamping-conducting only in reverse bias above V_BR. In contrast, SA11CA is bi-directional with no polarity marking and clamps in both directions, making it suitable for AC lines or differential signal protection. The SA11-E3/54 offers lower leakage and tighter V_BR tolerance, ideal for DC rail protection.

Can SA11-E3/54 be used in parallel for higher surge current handling?

No-SA11-E3/54 should not be paralleled without external balancing resistors due to inherent V_BR mismatch (12.2–13.5 V range), which causes current hogging and potential thermal runaway. For higher surge capability, select a single higher-rated device (e.g., SA12A or SA13A) or consult Vishay's application note AN8002 for derated parallel configurations with matched lots and ballasting.

SA11-E3/54 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay General Semiconductor - Diodes Division

Package/Case:: DO-204AC, DO-15, Axial

Series:: TransZorb®

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Type:: Zener

Unidirectional Channels:: 1

Bidirectional Channels:: -

Voltage - Reverse Standoff (Typ):: 11V

Voltage - Breakdown (Min):: 12.2V

Voltage - Clamping (Max) @ Ipp:: 20.1V

Current - Peak Pulse (10/1000µs):: 24.9A

Power - Peak Pulse:: 500W

Power Line Protection:: No

Applications:: General Purpose

Capacitance @ Frequency:: -

Operating Temperature:: -55°C ~ 175°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-204AC (DO-15)

SA11-E3/54 FAQ

1.How can I place an order for SA11-E3/54 through Aetrix?

Please submit a Request for Quotation (RFQ) for SA11-E3/54 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for SA11-E3/54 reliable?

The price and inventory of SA11-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA11-E3/54 is usually 5 days.

3.What payment methods are accepted for SA11-E3/54?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA11-E3/54 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SA11-E3/54?

SA11-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SA11-E3/54 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for SA11-E3/54?

For technical support, including SA11-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA11-E3/54 requirements.

6.How does Aetrix verify that SA11-E3/54 is sourced from the original manufacturer or authorized distributors?

All SA11-E3/54 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SA11-E3/54 meets industry standards.

7.What is the process for return or replacement of SA11-E3/54?

All SA11-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA11-E3/54, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The SA11-E3/54 part is unused and in its original packaging.

Return procedure for SA11-E3/54:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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