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

Vishay General Semiconductor - Diodes Division SA13HE3/73

Name: SA13HE3/73
Brand: Vishay General Semiconductor - Diodes Division
SKU: SA13HE3/73
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SA13HE3/73

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: TVS Diodes

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

Datasheet:: SA13HE3/73.pdf

Description:: TVS DIODE 13VWM 23.8VC DO204AC

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Product details

Overview

SA13HE3/73 from Vishay General Semiconductor is a uni-directional Transient Voltage Suppressor (TVS) diode in DO-204AC (DO-15) package, designed for primary overvoltage protection of sensitive electronics. It features a 13 V stand-off voltage (V_WM), 14.4–15.9 V breakdown voltage (V_BR) at 1.0 mA, 23.3 A peak pulse current (I_PPM), 21.5 V clamping voltage (V_C) at I_PPM, and 500 W peak pulse power (10/1000 µs). It is AEC-Q101 qualified and used to protect MOSFETs, ICs, and sensor signal lines against inductive switching transients.

For engineers reviewing the SA13HE3/73 datasheet, SA13HE3/73 pinout, SA13HE3/73 application, or SA13HE3/73 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, DO-15 mechanical data, clamping performance under 10/1000 µs surge, and direct alternatives with documented V_WM/V_C/I_PPM alignment.

Technical Context

This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds V_BR, it avalanches to divert transient energy away from downstream circuitry. Its glass-passivated junction ensures stable breakdown and low leakage (<1.0 µA at V_WM), while its 175 °C max junction temperature supports under-hood automotive use.

The device complies with AEC-Q101 stress testing for automotive reliability and uses matte tin-plated leads solderable per J-STD-002/JESD 22-B102. Its DO-204AC package provides UL 94 V-0 flammability rating and supports 275 °C solder dip (10 s).

Key Specifications

Parameter	Value and Actual Design Meaning
V_WM	13 V - Maximum continuous reverse operating voltage before clamping begins
V_BR (min/max)	14.4 V / 15.9 V at 1.0 mA - Ensures reliable avalanche initiation within tight tolerance band
I_PPM	23.3 A (10/1000 µs) - Peak surge current it can safely clamp without failure
V_C	21.5 V at I_PPM - Clamped voltage seen by protected circuit during worst-case transient
P_PPM	500 W - Surge power handling capability under standardized 10/1000 µs waveform
T_J max	175 °C - Enables operation in high-temperature environments including automotive engine compartments
Leakage (I_D)	<1.0 µA at V_WM - Minimal standby power loss and no false triggering in low-power systems

Pinout & Package

Package: DO-204AC (DO-15), axial lead, molded epoxy case with UL 94 V-0 rating. Cathode indicated by color band on body.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction terminal	Connected to lower-potential side (e.g., ground or return path) in uni-directional configuration
Cathode	Avalanche clamping terminal	Connected to protected line; conducts during overvoltage to shunt surge to anode/ground

Key Features

Feature	Design Value
Glass passivated junction	Ensures stable, repeatable breakdown voltage and long-term reliability under thermal cycling
AEC-Q101 qualification	Validated for automotive applications including powertrain, body control, and ADAS sensor interfaces
500 W peak pulse power (10/1000 µs)	Handles high-energy transients from inductive loads like solenoids, relays, and motors
Low incremental clamping resistance	Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a/5a)
Matte tin-plated leads	Enables robust solder joint formation compliant with J-STD-002 and JESD 22-B102

Applications

Automotive Power Distribution	Industrial Sensor Interface Protection
Use Scenario: Protecting 12 V supply rails in vehicle door modules, seat controllers, and lighting drivers from load dump and inductive kickback. IC Role / Device Role / Timing Role: Shunt clamping element placed across input rail to clamp transients to ≤21.5 V before they reach DC-DC converters or microcontrollers. Use Value: Prevents latch-up or permanent damage to downstream 16 V-rated ICs during 12 V system surges up to 100 V.	Use Scenario: Safeguarding analog output lines of pressure, temperature, or position sensors in PLC I/O modules exposed to field wiring noise. IC Role / Device Role / Timing Role: Bidirectional-capable protection (via companion CA variant) or uni-directional rail clamp on sensor V_OUT to ground. Use Value: Limits induced transients to <22 V, preserving 12-bit ADC accuracy and preventing false readings during EFT bursts.
Consumer Appliance Motor Control	Telecom Line Card Surge Protection
Use Scenario: Shielding gate drivers and MCU I/O pins in washing machine motor inverters from back-EMF spikes generated by BLDC motor commutation. IC Role / Device Role / Timing Role: Fast-response clamping diode placed between half-bridge leg outputs and ground reference. Use Value: Clamps 100 ns rise-time spikes to 21.5 V within 1 ns response, avoiding shoot-through in adjacent FETs.	Use Scenario: Front-end protection on Ethernet PHY power rails and RS-485 bus lines in network edge equipment subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS on +3.3 V/5 V bias rails and differential signal pairs to meet IEC 61000-4-5 Level 3 (1 kV/2 kV) Use Value: Absorbs 500 W surge energy without degradation, maintaining signal integrity and preventing PHY latch-up.

Automotive Power Distribution

Industrial Sensor Interface Protection

Use Scenario: Protecting 12 V supply rails in vehicle door modules, seat controllers, and lighting drivers from load dump and inductive kickback.

IC Role / Device Role / Timing Role: Shunt clamping element placed across input rail to clamp transients to ≤21.5 V before they reach DC-DC converters or microcontrollers.

Use Value: Prevents latch-up or permanent damage to downstream 16 V-rated ICs during 12 V system surges up to 100 V.

Use Scenario: Safeguarding analog output lines of pressure, temperature, or position sensors in PLC I/O modules exposed to field wiring noise.

IC Role / Device Role / Timing Role: Bidirectional-capable protection (via companion CA variant) or uni-directional rail clamp on sensor V_OUT to ground.

Use Value: Limits induced transients to <22 V, preserving 12-bit ADC accuracy and preventing false readings during EFT bursts.

Consumer Appliance Motor Control

Telecom Line Card Surge Protection

Use Scenario: Shielding gate drivers and MCU I/O pins in washing machine motor inverters from back-EMF spikes generated by BLDC motor commutation.

IC Role / Device Role / Timing Role: Fast-response clamping diode placed between half-bridge leg outputs and ground reference.

Use Value: Clamps 100 ns rise-time spikes to 21.5 V within 1 ns response, avoiding shoot-through in adjacent FETs.

Use Scenario: Front-end protection on Ethernet PHY power rails and RS-485 bus lines in network edge equipment subjected to lightning-induced surges.

IC Role / Device Role / Timing Role: Primary-level TVS on +3.3 V/5 V bias rails and differential signal pairs to meet IEC 61000-4-5 Level 3 (1 kV/2 kV)

Use Value: Absorbs 500 W surge energy without degradation, maintaining signal integrity and preventing PHY latch-up.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMAJ13A-E3/5A	V_WM = 13 V, V_C = 21.5 V, I_PPM = 23.3 A, same DO-214AC (SMA) package but surface-mount	Requires PCB rework for SMT vs. through-hole; lower thermal mass limits sustained surge duty cycle	Select when board space is constrained and automated assembly is preferred over axial lead insertion.
1N6136A	V_WM = 13 V, V_C = 21.2 V, I_PPM = 23.6 A, identical DO-204AC package and AEC-Q101 qualification	No functional or mechanical difference; same pinout, footprint, and reliability profile	Drop-in replacement with identical sourcing and qualification-ideal for dual-sourcing or lifecycle continuity.

Compared with SMAJ13A-E3/5A and 1N6136A, SA13HE3/73 offers identical clamping performance and AEC-Q101 compliance in a through-hole DO-204AC package optimized for manual prototyping, high-reliability industrial assemblies, and legacy automotive harness interfaces where axial leads simplify wire-to-board connections.

Availability

SA13HE3/73 is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface protection, consumer appliance motor control, and telecom line card surge protection requiring stable component supply and AEC-Q101 assurance.

Supply support for SA13HE3/73 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, rectifiers, MOSFETs, and TVS devices with emphasis on reliability, power efficiency, and automotive-grade qualification.

The SAxx series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for robust transient suppression in harsh environments-including automotive, industrial automation, and infrastructure equipment-where consistent clamping and AEC-Q101 validation are mandatory.

FAQ

What is the maximum clamping voltage of the SA13HE3/73 under a 10/1000 µs surge?

The SA13HE3/73 has a maximum clamping voltage (V_C) of 21.5 V when subjected to its rated peak pulse current of 23.3 A (10/1000 µs waveform). This value is measured per Figure 7 in Vishay document 88378 and defines the upper voltage limit imposed on protected circuitry during transient events. The SA13HE3/73 maintains this clamping performance across its full operating temperature range.

Is the SA13HE3/73 qualified for automotive applications?

Yes, the SA13HE3/73 carries AEC-Q101 qualification, confirming it has passed stress tests for temperature cycling, humidity, mechanical shock, and high-temperature operating life required for automotive electronics. The "HE3" suffix explicitly denotes AEC-Q101 compliance per Vishay's ordering nomenclature, making SA13HE3/73 suitable for under-hood and chassis-mounted modules.

What does the "HE3" suffix mean in SA13HE3/73?

The "HE3" suffix in SA13HE3/73 indicates RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. Per Vishay documentation, "H" denotes AEC-Q101 qualification, "E3" denotes RoHS compliance and Class 2 tin whisker mitigation-distinct from "E3" alone, which is commercial grade only. This makes SA13HE3/73 appropriate for mission-critical automotive designs.

Can SA13HE3/73 be used in bi-directional protection circuits?

No, SA13HE3/73 is a uni-directional TVS diode, identifiable by its cathode band marking and specified V_BR/V_C only for reverse polarity. For bi-directional applications (e.g., AC lines or differential buses), the SA13CA variant must be used. The SA13HE3/73 will conduct forward current if positive voltage is applied to its cathode, potentially causing failure in AC or floating-line configurations.

What is the thermal derating behavior of SA13HE3/73 above 25 °C ambient?

SA13HE3/73 follows Vishay's standard derating curve: its peak pulse power (500 W) remains constant up to T_J = 25 °C, then linearly decreases above that point, reaching ~250 W at T_J = 125 °C and zero at 175 °C. Steady-state power dissipation (P_D = 3.0 W) also derates linearly from 75 °C lead temperature per Figure 5. These curves are published in document 88378 and apply directly to SA13HE3/73.

SA13HE3/73 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):: 13V

Voltage - Breakdown (Min):: 14.4V

Voltage - Clamping (Max) @ Ipp:: 23.8V

Current - Peak Pulse (10/1000µs):: 21A

Power - Peak Pulse:: 500W

Power Line Protection:: No

Applications:: -

Capacitance @ Frequency:: -

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

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Through Hole

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

SA13HE3/73 FAQ

1.How can I place an order for SA13HE3/73 through Aetrix?

Please submit a Request for Quotation (RFQ) for SA13HE3/73 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 SA13HE3/73 reliable?

The price and inventory of SA13HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA13HE3/73 is usually 5 days.

3.What payment methods are accepted for SA13HE3/73?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA13HE3/73 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SA13HE3/73?

SA13HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SA13HE3/73 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 SA13HE3/73?

For technical support, including SA13HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA13HE3/73 requirements.

6.How does Aetrix verify that SA13HE3/73 is sourced from the original manufacturer or authorized distributors?

All SA13HE3/73 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 SA13HE3/73 meets industry standards.

7.What is the process for return or replacement of SA13HE3/73?

All SA13HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with SA13HE3/73, 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 SA13HE3/73 part is unused and in its original packaging.

Return procedure for SA13HE3/73:

1.Submit a request within 90 days.

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

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