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

Vishay General Semiconductor - Diodes Division SA10-E3/73

Name: SA10-E3/73
Brand: Vishay General Semiconductor - Diodes Division
SKU: SA10-E3/73
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SA10-E3/73

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: TVS Diodes

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

Datasheet:: SA10-E3/73.pdf

Description:: TVS DIODE 10VWM 18.8VC DO204AC

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Product details

Overview

SA10-E3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-204AC (DO-15) package, designed for primary overvoltage protection of DC power rails and signal lines. It features 10 V stand-off voltage (V_WM), 17.0 V maximum clamping voltage (V_C) at 29.4 A peak pulse current, 500 W peak pulse power (10/1000 µs), and AEC-Q101 qualification - used in automotive body control modules to protect CAN transceivers from load dump and inductive switching transients.

For engineers reviewing the SA10-E3/73 datasheet, SA10-E3/73 pinout, SA10-E3/73 application, or SA10-E3/73 equivalent, this page delivers verified electrical parameters, package dimensions, clamping behavior under surge conditions, thermal derating curves, and validated alternatives for automotive-grade transient suppression design.

Technical Context

The SA10-E3/73 operates as a silicon avalanche diode with glass-passivated junction, triggering conduction when reverse voltage exceeds its 11.1–12.3 V breakdown range (I_T = 1.0 mA). Its low incremental clamping resistance ensures stable V_C = 17.0 V at I_PPM = 29.4 A, enabling predictable energy diversion during 10/1000 µs transients.

It supports continuous power dissipation of 3.0 W on infinite heatsink at T_L = 75 °C and withstands 70 A non-repetitive forward surge (10 ms half-sine), with operating junction temperature spanning −55 °C to +175 °C - meeting requirements for under-hood automotive electronics.

Key Specifications

Parameter	Value and Actual Design Meaning
V_WM	10 V - Maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping threshold.
V_BR (min/max)	11.1 V / 12.3 V at I_T = 1.0 mA - Confirmed avalanche onset range; ensures reliable turn-on without premature conduction.
V_C @ I_PPM	17.0 V at 29.4 A (10/1000 µs) - Clamped voltage seen by protected IC; limits stress on downstream 12 V-rated components.
P_PPM	500 W - Peak transient energy absorption capacity; sustains single 10/1000 µs surges up to 500 W without failure.
I_FSM	70 A - Forward surge rating; handles inrush or fault currents in power supply input stages without bond wire fusing.
T_J max	+175 °C - Maximum junction temperature; enables placement near heat sources in engine control units.
AEC-Q101	Qualified - Validated for automotive reliability including temperature cycling, HTRB, and ESD; required for ECUs and ADAS sensors.

Pinout & Package

Package: DO-204AC (DO-15), axial leaded, molded epoxy case with UL 94 V-0 rating. Matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. Cathode indicated by color band on unidirectional device.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry / Reverse voltage reference	Connected to lower-potential side (e.g., ground or return path); defines polarity-sensitive clamping direction.
Cathode	Forward current exit / Surge voltage sensing node	Connected to protected line (e.g., 12 V rail); conducts avalanche current when V_K–V_A > V_BR.

Key Features

Feature	Design Value
Glass-passivated junction	Enables stable, repeatable avalanche characteristics over lifetime and temperature; eliminates surface degradation risks in humid environments.
500 W peak pulse power (10/1000 µs)	Handles ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 5a (load dump) waveforms without degradation in automotive systems.
AEC-Q101 qualification	Validates robustness across automotive stress tests (HTGB, TC, AC/DC life), supporting long-term deployment in safety-critical modules.
Low clamping voltage (V_C = 17.0 V)	Keeps protected 12 V logic interfaces (e.g., LIN transceivers) within absolute maximum ratings during 30 V transients.
DO-204AC mechanical robustness	Withstands 275 °C solder dip (10 s) per JESD 22-B106; compatible with standard through-hole reflow and wave soldering processes.

Applications

Automotive Body Control Module (BCM)	Industrial PLC Digital Input Protection
Use Scenario: Protects microcontroller GPIOs and CAN transceiver power pins from relay coil flyback and battery load dump events in BCMs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 12 V supply rail and ground, clamping transients within 1 ns response time. Use Value: Limits V_C to 17.0 V during 29.4 A surges, preventing latch-up or gate oxide damage in 12 V-tolerant CAN PHY ICs.	Use Scenario: Shields 24 V digital input circuits in programmable logic controllers from field-wiring induced surges and ESD. IC Role / Device Role / Timing Role: Front-end protection element on optocoupler input stage, absorbing repetitive 10/1000 µs transients up to 500 W. Use Value: Maintains <1 µA leakage at 10 V, ensuring clean logic-level detection while surviving industrial surge immunity tests (IEC 61000-4-5).
Consumer Appliance Motor Drive Board	Telecom Power Supply Input Stage
Use Scenario: Guards MCU reset lines and sensor supply rails against commutation spikes from brushed DC motors in washing machines. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) unidirectional clamp on 5 V/3.3 V rails, activated only during overvoltage events. Use Value: Delivers 17.0 V clamping at 29.4 A without affecting normal 5 V operation due to tight V_WM/V_BR margin.	Use Scenario: Suppresses lightning-induced surges on −48 V telecom rectifier outputs feeding base station backplane regulators. IC Role / Device Role / Timing Role: Primary overvoltage protector on DC input bus, coordinated with upstream MOVs and downstream ceramic capacitors. Use Value: Absorbs 500 W pulses without thermal runaway, supported by 175 °C T_J rating for high-ambient telecom cabinets.

Automotive Body Control Module (BCM)

Industrial PLC Digital Input Protection

Use Scenario: Protects microcontroller GPIOs and CAN transceiver power pins from relay coil flyback and battery load dump events in BCMs.

IC Role / Device Role / Timing Role: Unidirectional TVS placed between 12 V supply rail and ground, clamping transients within 1 ns response time.

Use Value: Limits V_C to 17.0 V during 29.4 A surges, preventing latch-up or gate oxide damage in 12 V-tolerant CAN PHY ICs.

Use Scenario: Shields 24 V digital input circuits in programmable logic controllers from field-wiring induced surges and ESD.

IC Role / Device Role / Timing Role: Front-end protection element on optocoupler input stage, absorbing repetitive 10/1000 µs transients up to 500 W.

Use Value: Maintains <1 µA leakage at 10 V, ensuring clean logic-level detection while surviving industrial surge immunity tests (IEC 61000-4-5).

Consumer Appliance Motor Drive Board

Telecom Power Supply Input Stage

Use Scenario: Guards MCU reset lines and sensor supply rails against commutation spikes from brushed DC motors in washing machines.

IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) unidirectional clamp on 5 V/3.3 V rails, activated only during overvoltage events.

Use Value: Delivers 17.0 V clamping at 29.4 A without affecting normal 5 V operation due to tight V_WM/V_BR margin.

Use Scenario: Suppresses lightning-induced surges on −48 V telecom rectifier outputs feeding base station backplane regulators.

IC Role / Device Role / Timing Role: Primary overvoltage protector on DC input bus, coordinated with upstream MOVs and downstream ceramic capacitors.

Use Value: Absorbs 500 W pulses without thermal runaway, supported by 175 °C T_J rating for high-ambient telecom cabinets.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMAJ10A	Same V_WM (10 V), identical DO-214AC package, but lower P_PPM = 400 W and higher V_C = 17.5 V at 25.7 A.	Not AEC-Q101 qualified; suitable for commercial/industrial use only, not automotive ECUs.	Select SMAJ10A for cost-sensitive non-automotive designs where 400 W surge rating suffices and AEC-Q101 is not mandated.
1.5KE10A	Higher P_PPM = 1500 W, larger DO-201AD package, V_C = 17.0 V at 87.2 A, but no AEC-Q101 qualification and higher leakage (5 µA).	Used in high-energy AC/DC front ends; incompatible with space-constrained automotive PCBs due to footprint size.	Choose 1.5KE10A only when surge energy exceeds 500 W and board layout allows DO-201AD spacing; avoid in AEC-Q101-compliant systems.

Compared with SMAJ10A and 1.5KE10A, SA10-E3/73 uniquely combines AEC-Q101 qualification, DO-204AC compactness, and precise 17.0 V clamping at 29.4 A - making it the preferred choice for automotive 12 V rail protection where reliability, size, and waveform fidelity are jointly constrained.

Availability

SA10-E3/73 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, and consumer appliance motor drive boards requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for SA10-E3/73 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade qualification.

The SAxxA series is part of Vishay's TRANSZORB® TVS family, engineered specifically for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure applications demanding AEC-Q101 compliance and repeatable clamping performance.

FAQ

What is the breakdown voltage range of SA10-E3/73?

The SA10-E3/73 has a guaranteed breakdown voltage (V_BR) range of 11.1 V to 12.3 V at test current I_T = 1.0 mA, measured per ANSI/IEEE C62.35. This range ensures consistent avalanche initiation across production lots and temperature extremes, critical for predictable clamping behavior in automotive 12 V systems where SA10-E3/73 is deployed.

Is SA10-E3/73 suitable for bidirectional transient protection?

No, SA10-E3/73 is a unidirectional TVS diode - its cathode band marks polarity, and it conducts only during reverse overvoltage events. For bidirectional protection, Vishay specifies the SA10CA variant. Using SA10-E3/73 in AC or symmetrical surge scenarios would leave positive-going transients unprotected, so SA10-E3/73 must be applied only in DC circuits with defined polarity.

What is the maximum clamping voltage of SA10-E3/73 under surge conditions?

The SA10-E3/73 exhibits a maximum clamping voltage (V_C) of 17.0 V when subjected to a 10/1000 µs peak pulse current of 29.4 A. This value is specified in the Vishay datasheet (Document Number: 88378, page 2) and represents the upper limit of voltage imposed on protected circuitry during worst-case transients - a key parameter for verifying SA10-E3/73 compatibility with downstream 12 V ICs.

Does SA10-E3/73 meet automotive reliability standards?

Yes, SA10-E3/73 is AEC-Q101 qualified, as confirmed in the Vishay datasheet footnote (page 3, Note 1) and mechanical data section. This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and unbiased highly accelerated stress testing - validating SA10-E3/73 for under-hood automotive applications such as body control modules and power distribution units.

What package type does SA10-E3/73 use, and what are its key mechanical attributes?

SA10-E3/73 uses the DO-204AC (DO-15) axial package: 1.0 inch minimum lead length, 0.104–0.140 inch body diameter, UL 94 V-0 rated epoxy molding, and matte tin-plated leads compliant with J-STD-002 solderability. Its compact size and proven thermal performance make SA10-E3/73 ideal for dense automotive PCB layouts where space and reliability are both constrained.

SA10-E3/73 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay General Semiconductor - Diodes Division

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

Series:: TransZorb®

Packaging:: Tape & Box (TB)

Product Status:: Obsolete

Type:: Zener

Unidirectional Channels:: 1

Bidirectional Channels:: -

Voltage - Reverse Standoff (Typ):: 10V

Voltage - Breakdown (Min):: 11.1V

Voltage - Clamping (Max) @ Ipp:: 18.8V

Current - Peak Pulse (10/1000µs):: 26.6A

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)

SA10-E3/73 FAQ

1.How can I place an order for SA10-E3/73 through Aetrix?

Please submit a Request for Quotation (RFQ) for SA10-E3/73 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 SA10-E3/73 reliable?

The price and inventory of SA10-E3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA10-E3/73 is usually 5 days.

3.What payment methods are accepted for SA10-E3/73?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA10-E3/73 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SA10-E3/73?

SA10-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SA10-E3/73 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 SA10-E3/73?

For technical support, including SA10-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA10-E3/73 requirements.

6.How does Aetrix verify that SA10-E3/73 is sourced from the original manufacturer or authorized distributors?

All SA10-E3/73 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 SA10-E3/73 meets industry standards.

7.What is the process for return or replacement of SA10-E3/73?

All SA10-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with SA10-E3/73, 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 SA10-E3/73 part is unused and in its original packaging.

Return procedure for SA10-E3/73:

1.Submit a request within 90 days.

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

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