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Vishay General Semiconductor - Diodes Division SA9.0A-E3/54
- Part No.:
- SA9.0A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA9.0A-E3/54.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,596
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Product details
Overview
SA9.0A-E3/54 from Vishay General Semiconductor is a unidirectional TransZORB® transient voltage suppressor diode in DO-15 package, designed to protect sensitive electronics against voltage transients induced by inductive load switching and lightning surges. 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 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 SA9.0A-E3/54 datasheet, SA9.0A-E3/54 pinout, SA9.0A-E3/54 application, or SA9.0A-E3/54 equivalent, this page delivers verified electrical parameters, DO-15 terminal configuration, bidirectional-capable family context, clamping performance under standardized surge waveforms, and direct alternatives for circuit protection design-in.
Technical Context
The SA9.0A-E3/54 operates as a unidirectional avalanche diode with glass-passivated junction, optimized for fast response (<1 ns) and low incremental surge resistance. Its 10/1000 μs waveform rating supports 500 W peak pulse power dissipation, while thermal derating follows a defined curve above 25 °C ambient, with maximum junction temperature of 175 °C.
It exhibits 9.2 mV/°C temperature coefficient of breakdown voltage and 600 μA maximum reverse leakage at VWM, enabling stable clamping across industrial temperature ranges. The device complies with JESD22-B106 soldering standards and meets UL 94 V-0 flammability requirements for epoxy molding compound.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum continuous reverse operating voltage before significant conduction begins |
| VBR (min/max) | 10.0 V / 11.1 V at 1.0 mA - Ensures predictable avalanche onset within tight tolerance for reliable overvoltage triggering |
| VC @ IPPM | 15.4 V at 5.0 A - Clamps transient energy to safe levels for downstream ICs, MOSFETs, and sensor interfaces |
| PPPM | 500 W (10/1000 μs) - Handles high-energy surges common in automotive and industrial power line transients |
| ID @ VWM | 600 μA - Low leakage preserves signal integrity and minimizes standby power loss in always-on circuits |
| TJ max | 175 °C - Supports operation in under-hood automotive environments and high-temperature industrial enclosures |
| AEC-Q101 | Qualified - Validated for automotive electronic systems requiring robust reliability and stress testing compliance |
Pinout & Package
Package: DO-15 (DO-204AC), axial leaded, molded epoxy case with matte tin-plated leads. Polarity marked by cathode band on one end; color band denotes cathode for unidirectional types like SA9.0A-E3/54.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to ground or low-side reference in unidirectional TVS configurations |
| Cathode (banded end) | Avalanche clamping node | Connected to protected line (e.g., CAN_H, USB_VBUS, sensor supply); conducts during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables stable, repeatable avalanche characteristics and long-term reliability under repetitive surge stress |
| 500 W peak pulse power (10/1000 μs) | Protects against high-energy transients from relay coil flyback, motor commutation, and ESD-coupled surges |
| Low clamping ratio (VC/VBR ≈ 1.5) | Minimizes overvoltage overshoot during clamping, reducing risk of damage to downstream silicon |
| AEC-Q101 qualification | Validates suitability for automotive applications including body control modules, infotainment power rails, and sensor interfaces |
| UL 94 V-0 compliant molding | Ensures flame-retardant behavior in safety-critical enclosures and high-density PCB assemblies |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp positive-going surges up to ISO 7637-2 Pulse 5a. Use Value: SA9.0A-E3/54's 15.4 V clamping ensures microcontrollers and CAN transceivers remain below absolute maximum ratings during 35 V/100 ms load dump events. | Use Scenario: Safeguarding analog output lines of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Connected anode-to-ground, cathode-to-signal line to suppress inductive kickback from solenoid-actuated valves. Use Value: With 5.0 A peak pulse current handling and sub-1 ns response, SA9.0A-E3/54 prevents latch-up or gate oxide damage in precision op-amp front-ends. |
| Consumer USB Port Surge Suppression | Telecom Line Card Transient Protection |
Use Scenario: Adding secondary-level surge immunity to USB 2.0 VBUS lines in set-top boxes and docking stations. IC Role / Device Role / Timing Role: Placed upstream of USB power switches to absorb IEC 61000-4-5 Level 3 (1 kV/42 Ω) surges. Use Value: SA9.0A-E3/54's 9.0 V VWM allows normal 5 V operation while clamping to 15.4 V-well below USB switch overvoltage thresholds. | Use Scenario: Protecting RS-485 transceiver inputs on telecom base station line cards exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Used in conjunction with GDTs and series impedance to form multi-stage protection network on differential data lines. Use Value: Its DO-15 footprint enables easy integration into legacy telecom PCB layouts, and 500 W rating handles repeated 10/1000 μs surges per ITU-T K.20/21. |
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 | Same VWM (9.0 V), but SMA package (surface-mount); lower IPPM (5.0 A vs. SA9.0A-E3/54's 5.0 A), identical VC (15.4 V) | Preferred for space-constrained PCBs where through-hole mounting is not feasible | Select SMAJ9.0A when board real estate is limited and reflow assembly is used; SA9.0A-E3/54 remains optimal for high-reliability through-hole designs with manual or wave soldering. |
| P6SMB9.0A | Same DO-214AA (SMB) package; slightly higher VBR range (10.0–12.2 V); identical PPPM (600 W), lower VC (15.0 V) | Better suited for designs requiring tighter clamping margin and higher surge repetition capability | Choose P6SMB9.0A if lower clamping voltage and SMB thermal performance are prioritized; SA9.0A-E3/54 offers proven DO-15 mechanical robustness and AEC-Q101 validation. |
Compared with SMAJ9.0A and P6SMB9.0A, SA9.0A-E3/54 provides AEC-Q101 qualification and DO-15 mechanical stability ideal for automotive and industrial through-hole assemblies, while maintaining identical clamping performance and surge rating-making it the preferred choice where legacy mounting and automotive compliance are required.
Availability
SA9.0A-E3/54 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface protection, consumer USB port surge suppression, and telecom line card transient protection requiring stable component supply and long-term lifecycle support.
Supply support for SA9.0A-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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SAxxA series is part of Vishay's TransZORB® TVS portfolio, engineered specifically for robust, cost-effective transient suppression in automotive, industrial, and communications infrastructure applications where high surge immunity and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of SA9.0A-E3/54 at its rated peak pulse current?
The SA9.0A-E3/54 has a maximum clamping voltage (VC) of 15.4 V at 5.0 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per Figure 7 in the Vishay datasheet 88378 and defines the upper voltage limit imposed on protected circuits during surge events. Maintaining VC below downstream IC absolute maximum ratings is critical-and SA9.0A-E3/54 achieves this with margin for 12 V system rails.
Is SA9.0A-E3/54 suitable for automotive applications?
Yes, SA9.0A-E3/54 is AEC-Q101 qualified, confirming its suitability for automotive applications including engine control units, body electronics, and infotainment power supplies. Its DO-15 package withstands mechanical vibration, and its 175 °C maximum junction temperature supports under-hood deployment. The SA9.0A-E3/54 also meets JESD22-B106 soldering standards and UL 94 V-0 flammability requirements-key criteria for automotive-grade components.
What does the "E3/54" suffix indicate in SA9.0A-E3/54?
The "E3" suffix denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads meeting J-STD-002 and JESD 22-B102 solderability standards, plus JESD 201 Class 1A whisker resistance. The "/54" indicates the preferred package code for 13-inch paper tape and reel packaging, with a base quantity of 4000 units per reel. This ordering format ensures consistent logistics and automated assembly compatibility for SA9.0A-E3/54.
How does SA9.0A-E3/54 differ from bidirectional variants like SA9.0CA?
SA9.0A-E3/54 is unidirectional, featuring a cathode band for polarity-sensitive placement, whereas SA9.0CA is bidirectional with no polarity marking and symmetrical clamping in both directions. SA9.0A-E3/54 is intended for DC line protection (e.g., +12 V rails), while SA9.0CA suits AC-coupled or differential signal lines like RS-485. Their VBR, VC, and PPPM values are identical-but SA9.0A-E3/54 cannot replace SA9.0CA in bidirectional applications without circuit redesign.
What is the maximum reverse leakage current for SA9.0A-E3/54 at its stand-off voltage?
The maximum reverse leakage current (ID) for SA9.0A-E3/54 is 600 μA at its 9.0 V stand-off voltage (VWM) and 25 °C ambient temperature. This low leakage ensures minimal impact on power budget and signal integrity in always-on or low-power systems. Leakage increases with temperature and voltage stress, but remains within specification up to 175 °C junction temperature as defined in the Vishay SA5.0A–SA170CA datasheet.
SA9.0A-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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 9V
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 15.4V
- Current - Peak Pulse (10/1000µs):
- 32.5A
- 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)
SA9.0A-E3/54 FAQ
1.How can I place an order for SA9.0A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA9.0A-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 SA9.0A-E3/54 reliable?
The price and inventory of SA9.0A-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 SA9.0A-E3/54 is usually 5 days.
3.What payment methods are accepted for SA9.0A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA9.0A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA9.0A-E3/54?
SA9.0A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA9.0A-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 SA9.0A-E3/54?
For technical support, including SA9.0A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA9.0A-E3/54 requirements.
6.How does Aetrix verify that SA9.0A-E3/54 is sourced from the original manufacturer or authorized distributors?
All SA9.0A-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 SA9.0A-E3/54 meets industry standards.
7.What is the process for return or replacement of SA9.0A-E3/54?
All SA9.0A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA9.0A-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 SA9.0A-E3/54 part is unused and in its original packaging.
Return procedure for SA9.0A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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