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Vishay General Semiconductor - Diodes Division SA9.0-E3/73
- Part No.:
- SA9.0-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA9.0-E3/73.pdf
- Description:
- TVS DIODE 9VWM 16.9VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,948
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Product details
Overview
SA9.0-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 a 9.0 V stand-off voltage (VWM), 10.0–11.1 V breakdown voltage (VBR) at 1.0 mA test current, 15.4 V maximum clamping voltage (VC) at 5.0 A peak pulse current, 500 W peak pulse power rating (10/1000 µs), and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SA9.0-E3/73 datasheet, SA9.0-E3/73 pinout, SA9.0-E3/73 application, or SA9.0-E3/73 equivalent, this device is selected for robust ESD and surge protection in automotive body control modules, industrial sensor interfaces, and 12 V DC input stages where fast response (<1 ns), low clamping ratio (VC/VBR ≈ 1.5), and stable junction temperature up to +175 °C are critical.
Technical Context
This unidirectional TVS operates as a voltage-clamped shunt protector: under normal bias it presents <1.0 µA reverse leakage at 9.0 V, then rapidly avalanches when transient voltage exceeds 10.0 V (min VBR), limiting downstream voltage to ≤15.4 V at 5.0 A. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance.
The device complies with IEC 61000-4-2 (ESD) and IEC 61000-4-5 (surge) immunity requirements when applied with proper PCB layout-short traces, low-inductance grounding, and placement adjacent to protected IC inputs or connectors. It is not intended for AC line protection or repetitive high-duty-cycle transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum continuous reverse operating voltage before significant leakage; sets upper limit for protected circuit's nominal DC rail. |
| VBR (min/max) | 10.0 V / 11.1 V at 1.0 mA - Confirmed avalanche onset range; determines minimum overvoltage threshold for clamping activation. |
| VC @ IPPM | 15.4 V at 5.0 A (10/1000 µs) - Clamped voltage seen by downstream IC during worst-case surge; defines absolute stress limit on protected node. |
| PPPM | 500 W - Peak transient energy handling capacity; supports single-event surges up to 500 W without failure. |
| IFSM | 70 A (10 ms half-sine) - Surge current withstand capability for short-duration inductive switch-offs; validates robustness against load dump events. |
| TJ max | +175 °C - Maximum junction temperature; enables operation in under-hood automotive environments and high-ambient industrial enclosures. |
| Package | DO-204AC (DO-15) - Standard axial-leaded through-hole package with matte tin-plated leads; compatible with wave soldering (275 °C, 10 s max). |
Pinout & Package
DO-204AC (DO-15) package: axial-leaded, molded epoxy case with cathode band marking. Leads are matte tin-plated, solderable per J-STD-002 and JESD 22-B102. Polarity: cathode end marked with color band; anode is unmarked lead.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked lead) | Current entry terminal during forward conduction | Connected to ground or low-impedance return path in unidirectional TVS configuration; forms shunt path during overvoltage. |
| Cathode (banded lead) | Current exit terminal during forward conduction; high-impedance terminal in reverse bias | Connected to protected line (e.g., 12 V rail or signal input); avalanche occurs between cathode and anode when VAK > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable, repeatable breakdown voltage with minimal drift over temperature and lifetime; eliminates surface contamination sensitivity. |
| 500 W peak pulse power (10/1000 µs) | Handles common automotive ISO 7637-2 pulse 1, 2a, 3a/b and IEC 61000-4-5 combination wave surges without degradation. |
| AEC-Q101 qualified | Validated for automotive applications including engine control units, lighting modules, and infotainment power supplies per stress test requirements. |
| Low clamping ratio (VC/VBR ≈ 1.54) | Minimizes voltage overshoot during clamping-critical for protecting 5 V or 3.3 V logic interfaces fed from 12 V rails via LDOs or DC-DC converters. |
| RoHS-compliant (E3 suffix) | Meets EU Directive 2011/65/EU; matte tin plating passes JESD 201 Class 1A whisker test for long-term reliability in vibration-prone environments. |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Protecting LIN bus transceiver inputs and microcontroller GPIOs from load dump and inductive switching transients in door module ECUs. IC Role / Device Role: Primary shunt clamp placed directly at connector entry point, upstream of ESD diode arrays and linear regulators. Use Value: Limits transient voltage to ≤15.4 V, preventing latch-up or gate oxide damage in 5 V tolerant MCU pins while surviving repeated 12 V system surges. |
Use Scenario: Safeguarding analog output lines (0–10 V, 4–20 mA) of pressure/temperature transmitters exposed to field wiring induced surges. IC Role / Device Role: Unidirectional TVS mounted at terminal block entry, referenced to system ground, with series current-limiting resistor. Use Value: Clamps fast-rising transients (e.g., relay coil kickback) before they reach precision DACs or op-amp buffers, preserving measurement accuracy and long-term calibration stability. |
| 12 V DC Power Input Stage | USB-C Port VBUS Protection |
Use Scenario: Front-end surge suppression for 12 V input to DC-DC converters powering ADAS camera modules or radar processors. IC Role / Device Role: First-line defense against ISO 16750-2 battery transient pulses (e.g., jump-start spikes up to +20 V). Use Value: Withstands 70 A non-repetitive forward surge (IFSM), enabling reliable operation during cold-crank and alternator load dump events without fuse coordination issues. |
Use Scenario: Secondary overvoltage clamp on USB-C VBUS line after primary protection, guarding against adapter fault conditions or hot-plug overshoot. IC Role / Device Role: Low-capacitance unidirectional TVS placed between VBUS and GND, downstream of EMI filter but upstream of USB PD controller. Use Value: Fast response (<1 ns) and tight VBR tolerance (10.0–11.1 V) ensure clamping initiates before VBUS exceeds 15 V, preventing damage to USB PD PHY and power switches. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0A-E3/5A (Vishay) | Same VWM (9.0 V), identical VBR and VC, but in SMC (DO-214AB) surface-mount package; 500 W rating retained. | Requires rework for SMT assembly; better suited for space-constrained PCBs and automated production vs. through-hole SA9.0-E3/73. | Select SMAJ9.0A-E3/5A when board real estate is limited and wave soldering is not required. |
| 1.5KE9.1A (ON Semiconductor) | Higher VWM (7.79 V), slightly lower VBR (8.65–9.56 V), same 500 W rating, DO-201AE package; no AEC-Q101 qualification. | Lacks automotive qualification; suitable for commercial/industrial use only; higher leakage at 9.0 V due to lower VWM. | Select 1.5KE9.1A only for cost-sensitive non-automotive designs where AEC-Q101 is not mandated. |
Compared with SMAJ9.0A-E3/5A and 1.5KE9.1A, SA9.0-E3/73 provides verified AEC-Q101 compliance and through-hole mechanical robustness for high-vibration environments, while maintaining identical electrical clamping performance-making it the preferred choice for automotive and harsh industrial deployments requiring legacy-compatible assembly.
Availability
SA9.0-E3/73 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, 12 V DC power input protection, and USB-C VBUS safeguarding requiring stable component supply across extended production lifecycles.
Supply support for SA9.0-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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The SAxxA series is part of Vishay's TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in automotive, industrial, and telecom infrastructure-prioritizing low clamping voltage, fast response, and AEC-Q101 validation.
FAQ
What is the maximum clamping voltage of SA9.0-E3/73 at its rated peak pulse current?
The SA9.0-E3/73 has a maximum clamping voltage (VC) of 15.4 V when subjected to a 10/1000 µs waveform peak pulse current (IPPM) of 5.0 A. This value is measured per JEDEC standards and represents the highest voltage that will appear across the SA9.0-E3/73 during such a transient event, ensuring downstream components remain within safe operating limits.
Is SA9.0-E3/73 suitable for bi-directional transient protection?
No, SA9.0-E3/73 is a unidirectional TVS diode, indicated by the "A" suffix (not "CA"). It conducts only in reverse breakdown mode and must be oriented with cathode toward the protected line. For bi-directional protection, use SA9.0CA variants; the SA9.0-E3/73 itself provides no symmetrical clamping in both polarities.
Does SA9.0-E3/73 meet automotive qualification standards?
Yes, SA9.0-E3/73 is AEC-Q101 qualified, as confirmed in Vishay's official documentation (Document Number: 88378, Revision: 18-Sep-12). This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD, validating its suitability for automotive electronic control units and body electronics.
What is the reverse leakage current of SA9.0-E3/73 at its stand-off voltage?
At its rated stand-off voltage (VWM) of 9.0 V and ambient temperature of 25 °C, the SA9.0-E3/73 exhibits a maximum reverse leakage current (ID) of 5.0 µA. This low leakage ensures minimal power loss and signal interference in always-on circuits such as automotive wake-up lines or sensor bias networks.
Can SA9.0-E3/73 be used in place of SA9.0A-E3/54?
Yes-SA9.0-E3/73 and SA9.0A-E3/54 share identical electrical specifications, package (DO-204AC), and construction; the difference lies only in packaging format (73 = 7" reel, 54 = 13" reel) and base quantity. Both are RoHS-compliant, AEC-Q101 qualified, and functionally interchangeable in circuit design and layout.
SA9.0-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):
- 9V
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 16.9V
- Current - Peak Pulse (10/1000µs):
- 29.6A
- 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)
SA9.0-E3/73 FAQ
1.How can I place an order for SA9.0-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA9.0-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 SA9.0-E3/73 reliable?
The price and inventory of SA9.0-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 SA9.0-E3/73 is usually 5 days.
3.What payment methods are accepted for SA9.0-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA9.0-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA9.0-E3/73?
SA9.0-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA9.0-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 SA9.0-E3/73?
For technical support, including SA9.0-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA9.0-E3/73 requirements.
6.How does Aetrix verify that SA9.0-E3/73 is sourced from the original manufacturer or authorized distributors?
All SA9.0-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 SA9.0-E3/73 meets industry standards.
7.What is the process for return or replacement of SA9.0-E3/73?
All SA9.0-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with SA9.0-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 SA9.0-E3/73 part is unused and in its original packaging.
Return procedure for SA9.0-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA9.0-E3/73 Tags
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