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Vishay General Semiconductor - Diodes Division SA15A-E3/54
- Part No.:
- SA15A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA15A-E3/54.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,319
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Product details
Overview
SA15A-E3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-15 package, designed for circuit protection against ESD and inductive switching transients. It features 15 V stand-off voltage (VWM), 16.7–18.5 V breakdown voltage (VBR) at 1 mA, 24.4 V clamping voltage (VC) at 20.5 A peak pulse current, and 500 W peak pulse power rating with 10/1000 μs waveform.
For engineers reviewing the SA15A-E3/54 datasheet, SA15A-E3/54 pinout, SA15A-E3/54 application, or SA15A-E3/54 equivalent, this device is selected for robust overvoltage protection in DC power rails, I/O interfaces, and sensor signal lines where fast response (<1 ns), low clamping ratio, and AEC-Q101 qualification are required.
Technical Context
The SA15A-E3/54 operates as a silicon avalanche diode that enters breakdown when reverse voltage exceeds its VBR range (16.7–18.5 V), limiting transient energy by shunting surge current to ground. Its glass-passivated junction ensures stable leakage (<1.0 μA at 15 V) and long-term reliability under repetitive surges.
It supports unidirectional protection only, with cathode marked by color band, and is rated for 175 °C maximum junction temperature. The device complies with AEC-Q101 for automotive-grade stress testing and meets UL 94 V-0 flammability requirements in its molded epoxy DO-15 package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 16.7 V / 18.5 V at 1 mA - Confirmed avalanche onset range defining protection threshold tolerance |
| VC @ IPPM | 24.4 V at 20.5 A - Clamped voltage during 10/1000 μs surge, determining protected circuit's max stress level |
| PPPM | 500 W - Peak transient power handling capability per single 10/1000 μs pulse |
| ID @ VWM | ≤1.0 μA - Reverse leakage ensuring minimal standby power loss and signal integrity |
| TJ max. | +175 °C - Maximum junction temperature enabling operation in under-hood or industrial environments |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test requirements (HTOL, TCT, ESD, etc.) |
Pinout & Package
Package: DO-15 (DO-204AC), axial-leaded, epoxy-molded case with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102 solderability standards. Cathode identified by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to protected line (e.g., VCC or signal) in unidirectional configuration |
| Cathode | Reverse-biased clamping terminal | Connected to ground reference; color band marks this end for correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over time and temperature, minimizing parameter drift in harsh environments |
| 500 W peak pulse power (10/1000 μs) | Handles high-energy transients such as ISO 7637-2 Pulse 1/2a/5a without degradation |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes voltage overshoot across protected ICs, reducing risk of latch-up or damage |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS modules requiring extended reliability |
| UL 94 V-0 molding compound | Provides flame-retardant housing essential for safety-critical industrial and transportation systems |
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: Unidirectional TVS clamping overvoltage spikes on main power input before they reach LDOs or microcontrollers. Use Value: Withstands 500 W surges and maintains <1.0 μA leakage at 15 V, preserving low-power sleep modes while meeting ISO 16750-2 requirements. | Use Scenario: Shielding analog output lines of pressure or temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Fast-response (sub-nanosecond) voltage clamp placed at connector entry point to divert ESD current away from precision amplifier inputs. Use Value: 24.4 V clamping at 20.5 A ensures downstream op-amps see <25 V stress, preventing input stage damage during ±8 kV contact discharge. |
| Consumer USB Port ESD Protection | Telecom Line Card Surge Suppression |
Use Scenario: Safeguarding USB 2.0 data lines and VBUS in portable chargers and docking stations. IC Role / Device Role / Timing Role: Standoff-rated TVS on VBUS rail to absorb 10/1000 μs surges induced by hot-plug or adapter faults. Use Value: 15 V VWM allows full 5 V USB operation with margin; 500 W rating covers worst-case IEC 61000-4-5 Level 3 surges (1 kV/2 Ω). | Use Scenario: Front-end protection of Ethernet PHY or RS-485 transceivers in outdoor telecom cabinets exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary coarse-clamp device on DC bias lines feeding isolated interface ICs, coordinated with secondary GDT or MOV stages. Use Value: DO-15 package enables through-hole mounting for high-reliability mechanical retention; 175 °C TJ rating supports operation in sealed enclosures with elevated ambient temperatures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A | Same VWM (15 V), identical DO-214AC package, but lower PPPM (400 W) and higher VC (24.4 V same, but at lower IPPM = 16.7 A) | Less suitable for high-energy automotive load dump; better for space-constrained PCBs needing SMT | Select SMAJ15A only if surface-mount layout and reduced surge margin are acceptable trade-offs |
| P6KE15A | Same VWM (15 V), DO-15 package, but lower PPPM (600 W), higher VC (25.1 V at 23.3 A), and no AEC-Q101 qualification | Acceptable for industrial/commercial use but not automotive qualified designs | Choose P6KE15A when cost is prioritized over automotive qualification and slightly higher clamping is tolerable |
Compared with SMAJ15A and P6KE15A, the SA15A-E3/54 delivers AEC-Q101 validation, precise 20.5 A IPPM rating at 24.4 V clamping, and tighter VBR tolerance (±5.4%), making it optimal for automotive and high-reliability industrial applications demanding verified surge endurance.
Availability
SA15A-E3/54 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface protection, and consumer USB port ESD protection requiring stable component supply across production lifecycles.
Supply support for SA15A-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 and automotive 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 where robustness and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of the SA15A-E3/54 under a 10/1000 μs surge?
The SA15A-E3/54 has a maximum clamping voltage (VC) of 24.4 V at 20.5 A peak pulse current (IPPM) under a 10/1000 μs waveform. This value is measured per standard test conditions (TA = 25 °C) and defines the upper voltage limit imposed on protected circuits during surge events. The SA15A-E3/54 maintains this clamping performance consistently due to its glass-passivated junction and low incremental surge resistance.
Is the SA15A-E3/54 suitable for automotive applications?
Yes, the SA15A-E3/54 is AEC-Q101 qualified, confirming its reliability for automotive use cases including engine control units, body electronics, and ADAS sensor modules. It operates across –55 °C to +175 °C junction temperature range and withstands repetitive surge stresses defined in the AEC-Q101 stress test plan. The SA15A-E3/54 meets these requirements without derating in typical under-hood thermal environments.
What does the "E3/54" suffix mean in SA15A-E3/54?
The "E3" suffix indicates RoHS-compliant, commercial-grade construction with JESD 201 Class 1A whisker resistance, while "/54" denotes the preferred package code for 13-inch paper tape and reel packaging containing 4000 units. This ordering format ensures traceable, standardized logistics for automated assembly. The SA15A-E3/54 uses matte tin-plated leads compatible with J-STD-002 soldering processes.
How does the SA15A-E3/54 differ from bidirectional TVS diodes like SA15CA?
The SA15A-E3/54 is unidirectional and features a cathode marking band, intended for DC line protection where polarity is fixed. In contrast, SA15CA is bidirectional with no polarity marking and symmetric clamping in both directions. The SA15A-E3/54 offers lower forward voltage drop and higher IFSM (70 A) than SA15CA, making it preferable for power rail applications with defined polarity and high surge current demands.
What is the maximum reverse leakage current of the SA15A-E3/54 at its stand-off voltage?
The SA15A-E3/54 exhibits a maximum reverse leakage current (ID) of 1.0 μA at its 15 V stand-off voltage (VWM) and TA = 25 °C. This low leakage preserves system efficiency in always-on circuits and avoids false triggering in high-impedance sensing nodes. Leakage remains within specification up to 125 °C ambient, supporting reliable operation in thermally demanding deployments of the SA15A-E3/54.
SA15A-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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 20.5A
- 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)
SA15A-E3/54 FAQ
1.How can I place an order for SA15A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA15A-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 SA15A-E3/54 reliable?
The price and inventory of SA15A-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 SA15A-E3/54 is usually 5 days.
3.What payment methods are accepted for SA15A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA15A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA15A-E3/54?
SA15A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA15A-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 SA15A-E3/54?
For technical support, including SA15A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA15A-E3/54 requirements.
6.How does Aetrix verify that SA15A-E3/54 is sourced from the original manufacturer or authorized distributors?
All SA15A-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 SA15A-E3/54 meets industry standards.
7.What is the process for return or replacement of SA15A-E3/54?
All SA15A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA15A-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 SA15A-E3/54 part is unused and in its original packaging.
Return procedure for SA15A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA15A-E3/54 Tags
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