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Vishay General Semiconductor - Diodes Division SA9.0-E3/54
- Part No.:
- SA9.0-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA9.0-E3/54.pdf
- Description:
- TVS DIODE 9VWM 16.9VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,416
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Product details
Overview
SA9.0-E3/54 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, and 500 W peak pulse power rating with 10/1000 μs waveform.
For engineers reviewing the SA9.0-E3/54 datasheet, SA9.0-E3/54 pinout, SA9.0-E3/54 application, or SA9.0-E3/54 equivalent, this device is selected for robust ESD and surge protection in automotive body electronics, industrial sensor interfaces, and low-voltage DC power input stages where fast response (<1 ns), low clamping ratio, and AEC-Q101 qualification are required.
Technical Context
The SA9.0-E3/54 operates as a silicon avalanche diode, triggered when reverse voltage exceeds its breakdown threshold, diverting transient energy to ground while limiting downstream voltage to ≤15.4 V at 5.0 A. Its glass-passivated junction ensures stable VBR tolerance (±5 %) and low leakage (<5.0 μA at 9.0 V).
It is rated for 70 A non-repetitive forward surge current (IFSM) and supports continuous power dissipation of 3.0 W on an infinite heatsink at 75 °C. Junction temperature range spans –55 °C to +175 °C, enabling deployment in under-hood automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 9.0 V - Maximum continuous reverse voltage before significant conduction begins; sets operating margin for 9 V nominal supply rails. |
| VBR (Breakdown Voltage) | 10.0–11.1 V at 1.0 mA - Confirmed avalanche onset range; ensures reliable triggering without premature conduction during normal operation. |
| VC (Clamping Voltage) | 15.4 V at IPPM = 5.0 A - Peak voltage seen by protected circuit during 10/1000 μs surge; enables safe operation of 12 V logic and microcontrollers. |
| PPPM (Peak Pulse Power) | 500 W - Sustains standardized lightning/surge transients per IEC 61000-4-5; validated for 0.01 % duty cycle repetition. |
| IPPM (Peak Pulse Current) | 5.0 A - Maximum transient current handled at rated clamping voltage; correlates directly with system-level surge immunity level. |
| TJmax | +175 °C - Enables use in high-temperature environments such as engine control units and motor drive PCBs without derating. |
| Package | DO-204AC (DO-15) - Industry-standard axial leaded package with matte tin-plated leads; compatible with wave soldering (275 °C/10 s) and J-STD-002. |
Pinout & Package
DO-204AC (DO-15) package: axial-leaded, molded epoxy case with glass-passivated chip junction. Polarity marked by cathode band on one end; cathode is the protected line side in unidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference terminal | Connected to system ground or low-impedance return path; carries full surge current during clamping event. |
| Cathode | Protected line terminal | Connected to line being protected (e.g., 9 V rail or sensor output); voltage at this node is clamped to ≤15.4 V during transients. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures tight VBR tolerance (±5 %), stable leakage (<5 μA), and long-term reliability under thermal cycling. |
| 500 W peak pulse power (10/1000 μs) | Meets IEC 61000-4-5 Level 3 surge immunity requirements for industrial and automotive subsystems. |
| AEC-Q101 qualified (E3 suffix variant) | Validated for automotive applications including body control modules and infotainment power inputs. |
| Low incremental clamping resistance | Enables predictable VC rise with current (ΔVC/ΔI ≈ 1.2 V/A), simplifying worst-case system voltage margin analysis. |
| RoHS-compliant, matte tin-plated leads | Supports lead-free assembly processes and meets JESD 201 Class 1A whisker resistance for long-term solder joint integrity. |
Applications
| Automotive Body Control Module (BCM) Power Input | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protects 9 V supply rail of BCM against load dump and alternator ripple transients per ISO 7637-2. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed upstream of LDO regulators and MCU power pins. Use Value: Limits rail voltage to ≤15.4 V during 5 A surges, preventing latch-up or permanent damage to 12 V-tolerant logic. |
Use Scenario: Shields analog output of pressure/temperature sensors from ESD events and cable-induced surges in factory automation. IC Role / Device Role / Timing Role: Fast-acting shunt protector on 0–10 V or 4–20 mA signal lines interfacing with PLC analog inputs. Use Value: Sub-1 ns response time and <5 μA leakage preserve signal accuracy while surviving ±8 kV contact ESD (IEC 61000-4-2). |
| Consumer Appliance DC Motor Driver Supply | Telecom Power Adapter Secondary Side |
Use Scenario: Suppresses inductive kickback from brushed DC motors in smart home appliances (e.g., vacuum cleaners, blenders). IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals and H-bridge power rails. Use Value: Absorbs 500 W pulses without degradation, maintaining VC ≤15.4 V to protect MOSFET gate drivers and current sense amplifiers. |
Use Scenario: Clamps secondary-side transients caused by AC line surges or transformer ringing in wall-mounted telecom adapters. IC Role / Device Role / Timing Role: Standoff-rated protector on 9 V DC output rail feeding VoIP phones or small base stations. Use Value: Matches 9 V nominal output with 9.0 V VWM, ensuring no conduction during regulation while clamping to safe levels during faults. |
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), identical DO-214AC (SMA) package; slightly higher VC (16.0 V @ 5.3 A) and lower IPPM (5.3 A vs. 5.0 A). | Surface-mount alternative requiring PCB re-layout; better suited for space-constrained consumer designs. | Select SMAJ9.0A only if board space is limited and SMT assembly is available; verify thermal relief for 3.0 W steady-state dissipation. |
| 1N6105A | Same DO-204AC package and VWM (9.0 V), but lower PPPM (300 W) and higher VC (17.5 V @ 3.0 A); not AEC-Q101 qualified. | Limited to commercial-grade applications; insufficient for automotive or industrial surge standards. | Use 1N6105A only in cost-sensitive, non-automotive applications where 300 W pulse rating suffices and AEC-Q101 is not required. |
Compared with SMAJ9.0A and 1N6105A, SA9.0-E3/54 offers superior automotive qualification, tighter VBR tolerance, and optimal clamping performance for 9 V systems-making it the preferred choice where reliability, regulatory compliance, and precise voltage limiting are critical.
Availability
SA9.0-E3/54 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, consumer appliance motor drives, and telecom power adapter secondary-side protection requiring stable component supply and long-term lifecycle support.
Supply support for SA9.0-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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The SAxxA series is part of Vishay's TRANSZORB® TVS family, engineered specifically for robust, standardized transient suppression in harsh environments-emphasizing fast response, repeatable clamping, and AEC-Q101 validation for automotive electronics.
FAQ
What is the maximum clamping voltage of SA9.0-E3/54 under standard surge conditions?
The SA9.0-E3/54 has a maximum clamping voltage (VC) of 15.4 V when subjected to a 10/1000 μs waveform with a peak pulse current (IPPM) of 5.0 A. This value is measured per JEDEC standards and ensures downstream ICs on a 9 V rail remain within safe operating limits during transient events. The SA9.0-E3/54 maintains this clamping performance across its full operating temperature range.
Is SA9.0-E3/54 qualified for automotive applications?
Yes, SA9.0-E3/54 is AEC-Q101 qualified, as confirmed by Vishay's documentation and ordering code suffix "E3" (commercial grade with AEC-Q101 compliance). It is routinely deployed in automotive body control modules, lighting drivers, and sensor interfaces where reliability under thermal cycling, vibration, and electrical stress is mandatory. The SA9.0-E3/54 meets all stress test requirements defined in AEC-Q101 Rev D.
What does the "-E3/54" suffix indicate in SA9.0-E3/54?
The "-E3" suffix denotes RoHS-compliant, matte tin-plated leads meeting JESD 201 Class 1A whisker resistance, while "/54" specifies the packaging option: 13-inch diameter paper tape and reel containing 4000 units. This format ensures compatibility with automated pick-and-place equipment and satisfies IPC/JEDEC handling standards. The SA9.0-E3/54 is supplied in this configuration for high-volume manufacturing.
How does SA9.0-E3/54 compare to bi-directional TVS diodes like SA9.0CA?
SA9.0-E3/54 is unidirectional and intended for DC line protection with polarity-sensitive placement (cathode toward protected line), whereas SA9.0CA is bi-directional and used for AC or floating signal lines. The SA9.0-E3/54 offers lower leakage (<5 μA) and tighter VBR tolerance (±5 %) than SA9.0CA, making it preferable for precision 9 V DC rails. Both share identical PPPM (500 W) and package (DO-204AC), but SA9.0-E3/54 cannot replace SA9.0CA in AC-coupled applications.
What is the thermal derating behavior of SA9.0-E3/54 above 25 °C ambient?
SA9.0-E3/54 follows Vishay's standard derating curve: its peak pulse power remains constant up to 25 °C, then decreases linearly to zero at +175 °C junction temperature. For steady-state power dissipation, it delivers 3.0 W at lead temperature (TL) = 75 °C, derating to ~1.5 W at TL = 125 °C per Figure 5 in the datasheet. Designers must ensure adequate PCB copper area or heatsinking to maintain TJ ≤ 175 °C during repetitive surge events. The SA9.0-E3/54 datasheet provides exact derating multipliers for both pulse and DC conditions.
SA9.0-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:
- 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-E3/54 FAQ
1.How can I place an order for SA9.0-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA9.0-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 SA9.0-E3/54 reliable?
The price and inventory of SA9.0-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 SA9.0-E3/54 is usually 5 days.
3.What payment methods are accepted for SA9.0-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA9.0-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA9.0-E3/54?
SA9.0-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA9.0-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 SA9.0-E3/54?
For technical support, including SA9.0-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA9.0-E3/54 requirements.
6.How does Aetrix verify that SA9.0-E3/54 is sourced from the original manufacturer or authorized distributors?
All SA9.0-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 SA9.0-E3/54 meets industry standards.
7.What is the process for return or replacement of SA9.0-E3/54?
All SA9.0-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA9.0-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 SA9.0-E3/54 part is unused and in its original packaging.
Return procedure for SA9.0-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA9.0-E3/54 Tags
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