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Vishay General Semiconductor - Diodes Division SA8.0HE3/73
- Part No.:
- SA8.0HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA8.0HE3/73.pdf
- Description:
- TVS DIODE 8VWM 15VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,470
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Product details
Overview
SA8.0HE3/73 from Vishay General Semiconductor is a uni-directional TransZORB® transient voltage suppressor diode in DO-204AC (DO-15) package, rated for 8.0 V stand-off voltage, 500 W peak pulse power (10/1000 μs), 36.8 A peak pulse current, and 13.6 V clamping voltage at IPPM. It provides robust ESD and surge protection for DC power rails and signal lines in automotive and industrial control modules.
For engineers reviewing the SA8.0HE3/73 datasheet, SA8.0HE3/73 pinout, SA8.0HE3/73 application, or SA8.0HE3/73 equivalent, this AEC-Q101 qualified TVS diode offers verified clamping performance, low incremental surge resistance, and RoHS-compliant matte tin-plated leads suitable for J-STD-002 soldering - critical for high-reliability board-level transient suppression design.
Technical Context
The SA8.0HE3/73 employs a glass passivated silicon junction optimized for fast response (<1 ns) to transient overvoltages and stable clamping under repetitive 10/1000 μs surges at 0.01% duty cycle. Its breakdown voltage range is 8.89–9.83 V at 10 mA test current, with maximum reverse leakage of 25 μA at 8.0 V stand-off.
Designed for uni-directional operation, it features a cathode band marking, 3.5 V maximum forward voltage at 100 A, and operates across –55 °C to +175 °C junction temperature. Thermal derating follows a defined curve up to 75 °C lead temperature, with 3.0 W steady-state power dissipation on infinite heatsink.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 8.89 V / 9.83 V at 10 mA - Ensures reliable turn-on margin above VWM while avoiding false triggering |
| IPPM | 36.8 A (10/1000 μs) - Sustains industry-standard lightning/surge transients without failure |
| VC | 13.6 V at IPPM - Limits downstream IC voltage stress to safe levels during clamping |
| PPPM | 500 W - Delivers high-energy transient absorption capability in compact DO-15 package |
| TJ max. | +175 °C - Supports under-hood automotive and high-temperature industrial environments |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
Package: DO-204AC (DO-15), molded epoxy case meeting UL 94 V-0 flammability rating; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102; HE3 suffix denotes AEC-Q101 qualification and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connects to lower-potential side of protected circuit (e.g., GND or return rail) |
| Cathode (banded end) | Reverse-biased clamping node | Connects to higher-potential line (e.g., 12 V supply or signal input); defines polarity-sensitive placement |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables stable, low-leakage performance and long-term reliability under thermal cycling |
| 500 W peak pulse power (10/1000 μs) | Meets IEC 61000-4-5 Level 4 surge immunity requirements for industrial interfaces |
| AEC-Q101 qualification | Validated for automotive applications including engine control units and body electronics |
| Low incremental clamping resistance | Minimizes voltage overshoot during fast-rising transients (e.g., inductive switch-off) |
| RoHS-compliant HE3 suffix | Meets JESD 201 Class 2 whisker resistance and automotive material compliance standards |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients. IC Role / Device Role / Timing Role: Uni-directional TVS placed between power rail and ground to clamp positive-going surges. Use Value: Clamps transients to ≤13.6 V, safeguarding 16 V-rated microcontrollers and CAN transceivers without crowbar action. | Use Scenario: Shielding analog sensor outputs (e.g., pressure or temperature sensors) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS connected inline with signal trace to ground, minimizing signal distortion. Use Value: Sub-25 μA leakage at 8.0 V preserves sensor accuracy; 36.8 A surge handling prevents latch-up during 8 kV contact ESD. |
| Consumer Power Adapter Input Protection | Telecom Line Card Surge Suppression |
Use Scenario: Front-end protection for AC/DC adapter secondary-side 5–12 V outputs against surges from upstream switching noise. IC Role / Device Role / Timing Role: Standoff-rated TVS shunting transient energy to ground before reaching LDO regulators. Use Value: 8.0 V VWM ensures no conduction during normal operation; 13.6 V VC keeps downstream 12 V logic within safe margin. | Use Scenario: Secondary-side protection on telecom line cards exposed to induced surges from nearby power lines. IC Role / Device Role / Timing Role: Uni-directional TVS deployed on DC bias feeds to interface ICs (e.g., SLICs or codec drivers). Use Value: AEC-Q101 qualification supports extended field life; 500 W rating handles multiple IEC 61000-4-5 surges without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ8.0AHE3_A/H | Same VWM (8.0 V), identical DO-214AC package, but 400 W PPPM and higher VC (13.6 V vs. 13.6 V - same), slightly lower IPPM (32.4 A) | Lower peak power rating limits use in high-energy surge environments like automotive load dump | Select SMAJ8.0AHE3_A/H only when board space constraints favor SMC/SMA package and 400 W suffices |
| 1.5KE8.0A | Higher PPPM (1500 W), larger DO-201AD package, same VWM/VBR range, but not AEC-Q101 qualified and higher VC (13.6 V same, but less consistent at high current) | Lacks automotive qualification and has longer lead time; suited for cost-sensitive industrial mains protection | Choose 1.5KE8.0A for non-automotive, high-surge applications where footprint and qualification are secondary |
Compared with SMAJ8.0AHE3_A/H and 1.5KE8.0A, the SA8.0HE3/73 uniquely combines AEC-Q101 qualification, DO-15 compactness, and precise 500 W/13.6 V clamping - making it optimal for space-constrained automotive modules requiring certified reliability.
Availability
SA8.0HE3/73 is available at Aetrix Electronics and suitable for automotive control units, industrial sensor nodes, and telecom line card designs requiring stable component supply, AEC-Q101 validation, and repeatable surge clamping performance.
Supply support for SA8.0HE3/73 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, efficiency, and application-specific optimization.
The SAxxA series is part of Vishay's TransZORB® TVS platform designed specifically for robust, standardized transient suppression in automotive, industrial, and consumer power and signal lines - balancing clamping precision, surge capacity, and qualification rigor.
FAQ
What is the clamping voltage of the SA8.0HE3/73 under maximum surge conditions?
The SA8.0HE3/73 has a maximum clamping voltage (VC) of 13.6 V at its rated peak pulse current (IPPM) of 36.8 A, measured with a 10/1000 μs waveform. This value is guaranteed per Vishay's datasheet (Document Number 88378, Rev. 18-Sep-12) and ensures predictable overvoltage limiting for protected circuits. The SA8.0HE3/73 maintains this clamping performance across its full operating temperature range.
Is the SA8.0HE3/73 suitable for automotive applications?
Yes, the SA8.0HE3/73 is explicitly AEC-Q101 qualified, as confirmed in the Vishay datasheet footnote (page 3, Note 1) and mechanical data section. Its construction - including glass passivation, matte tin plating, JESD 201 Class 2 whisker resistance, and –55 °C to +175 °C operating range - meets automotive environmental and reliability requirements. The SA8.0HE3/73 is routinely used in engine control, body electronics, and infotainment power rails.
What does the "HE3" suffix indicate in SA8.0HE3/73?
The "HE3" suffix in SA8.0HE3/73 denotes RoHS compliance plus AEC-Q101 qualification and JESD 201 Class 2 whisker resistance - distinct from the base "E3" (commercial RoHS only). This suffix is defined in the Vishay datasheet's Mechanical Data section and confirms suitability for automotive and high-reliability industrial use. The SA8.0HE3/73 must be specified with HE3 to guarantee these qualifications.
How does the SA8.0HE3/73 compare to bi-directional TVS diodes like SA8.0CA?
The SA8.0HE3/73 is uni-directional, with a cathode band and forward conduction capability, whereas SA8.0CA is bi-directional and unmarked. The SA8.0HE3/73 offers lower forward voltage (3.5 V at 100 A) and is intended for DC rail protection where polarity is fixed. SA8.0CA would be selected only for AC-coupled or polarity-agnostic signal lines - the SA8.0HE3/73 is not interchangeable with SA8.0CA without circuit redesign.
What is the maximum reverse leakage current for the SA8.0HE3/73 at its rated stand-off voltage?
The SA8.0HE3/73 exhibits a maximum reverse leakage current (ID) of 25 μA at its rated stand-off voltage (VWM) of 8.0 V and TA = 25 °C, per the Electrical Characteristics table in the Vishay datasheet (page 2). This low leakage preserves power efficiency in always-on systems and avoids false triggering in high-impedance sensing circuits. The SA8.0HE3/73 maintains leakage below 100 μA up to 85 °C ambient.
SA8.0HE3/73 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):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 15V
- Current - Peak Pulse (10/1000µs):
- 33.3A
- 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)
SA8.0HE3/73 FAQ
1.How can I place an order for SA8.0HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA8.0HE3/73 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 SA8.0HE3/73 reliable?
The price and inventory of SA8.0HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA8.0HE3/73 is usually 5 days.
3.What payment methods are accepted for SA8.0HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA8.0HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA8.0HE3/73?
SA8.0HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA8.0HE3/73 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 SA8.0HE3/73?
For technical support, including SA8.0HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA8.0HE3/73 requirements.
6.How does Aetrix verify that SA8.0HE3/73 is sourced from the original manufacturer or authorized distributors?
All SA8.0HE3/73 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 SA8.0HE3/73 meets industry standards.
7.What is the process for return or replacement of SA8.0HE3/73?
All SA8.0HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with SA8.0HE3/73, 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 SA8.0HE3/73 part is unused and in its original packaging.
Return procedure for SA8.0HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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