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Vishay General Semiconductor - Diodes Division SA11CA-E3/54
- Part No.:
- SA11CA-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA11CA-E3/54.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,229
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Product details
Overview
SA11CA-E3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-15 package, designed for clamping voltage transients on signal or power lines. It features 500 W peak pulse power (10/1000 μs), 11 V stand-off voltage (VWM), 12.2–13.5 V breakdown voltage (VBR at 1 mA), and clamps to ≤18.2 V at 27.5 A peak pulse current - used in automotive sensor interface protection and industrial I/O line surge suppression.
For engineers reviewing the SA11CA-E3/54 datasheet, SA11CA-E3/54 pinout, SA11CA-E3/54 application, or SA11CA-E3/54 equivalent, this page delivers verified electrical specs, bidirectional clamping behavior, AEC-Q101 qualification status, DO-15 mechanical data, and real-world use cases in ESD/surge-prone analog front-ends and CAN bus interfaces.
Technical Context
The SA11CA-E3/54 operates as a symmetrical avalanche diode with identical forward and reverse breakdown characteristics, enabling bidirectional transient suppression without polarity dependency. Its glass-passivated junction ensures stable VBR tolerance (±5 %) and low incremental surge resistance, critical for consistent clamping under repetitive 10/1000 μs surges at 0.01 % duty cycle.
Designed for operation across –55 °C to +175 °C junction temperature, it maintains specified leakage (<1.0 μA at VWM) and clamping performance even after solder dip (275 °C, 10 s). The device meets AEC-Q101 stress test requirements, confirming suitability for automotive under-hood and infotainment subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - maximum continuous reverse voltage before significant leakage; sets operating margin below system rail. |
| VBR (min/max) | 12.2 V / 13.5 V at 1 mA - defines precise clamping onset threshold for bidirectional overvoltage events. |
| VC @ IPPM | ≤18.2 V at 27.5 A - peak clamped voltage during 10/1000 μs surge; determines protected circuit's maximum stress level. |
| PPPM | 500 W - peak pulse power handling per single transient; enables robust protection against IEC 61000-4-5 Level 3 surges. |
| ID @ VWM | ≤1.0 μA - ultra-low reverse leakage at stand-off voltage; preserves signal integrity in high-impedance sensor paths. |
| TJ max | +175 °C - extended junction temperature rating supports placement near heat sources in engine control units. |
| AEC-Q101 | Qualified - validated for automotive reliability including HTOL, TC, UHAST, and ESD testing per JESD47. |
Pinout & Package
Package: DO-15 (DO-204AC), axial lead, epoxy-molded, RoHS-compliant, matte tin-plated leads. No polarity marking - symmetrical bidirectional construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction | Either terminal serves as cathode or anode depending on transient polarity; no orientation required during PCB placement. |
| Lead 1 | Terminal connection | Matte tin-plated, solderable per J-STD-002; supports wave and reflow processes up to 275 °C for 10 s. |
| Lead 2 | Terminal connection | Identical to Lead 1; symmetric layout simplifies routing and eliminates polarity-check step in assembly. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures ±5 % VBR tolerance and long-term stability under thermal cycling and humidity stress. |
| 500 W peak pulse power (10/1000 μs) | Withstands IEC 61000-4-5 combination wave surges up to 1 kV/42 Ω without degradation. |
| AEC-Q101 qualification | Validates reliability for automotive applications including powertrain, body electronics, and ADAS sensor interfaces. |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes voltage overshoot during fast transients, protecting downstream 3.3 V or 5 V logic and analog ICs. |
| DO-15 mechanical compatibility | Enables drop-in replacement of legacy TVS diodes in existing through-hole designs without footprint change. |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protecting thermistor, pressure, or position sensor signals in engine control modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between sensor line and ground, limiting transient voltage to <18.2 V during 10/1000 μs surges. Use Value: Prevents latch-up or permanent damage to precision op-amps and ADC inputs while maintaining <1 μA leakage at 11 V bias. | Use Scenario: Shielding 4–20 mA current loop inputs in programmable logic controllers from field wiring-induced surges and ESD. IC Role / Device Role / Timing Role: Primary surge suppressor across input terminals, activated within <1 ns to clamp transients before reaching isolation amplifiers. Use Value: Enables compliance with IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) immunity standards without adding series impedance. |
| Telecom Line Interface Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding RS-485 transceivers in building automation gateways connected to long external cabling. IC Role / Device Role / Timing Role: Bidirectional TVS placed differential-mode across A/B lines and common-mode to ground, suppressing induced lightning surges. Use Value: Maintains signal integrity with <0.5 pF inter-electrode capacitance (per Vishay DO-15 typical curves), avoiding data rate degradation. | Use Scenario: Suppressing inductive kickback from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Across motor terminals to clamp flyback voltage spikes exceeding 11 V during MOSFET turn-off. Use Value: Eliminates need for snubber RC networks while sustaining 70 A non-repetitive surge capability (unidirectional equivalent path). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ11CA | Same VWM (11 V) and VBR, but SMC (DO-214AB) surface-mount package; 400 W PPPM. | Requires PCB redesign for SMD placement; better suited for space-constrained consumer boards. | Select SMAJ11CA when board area is limited and reflow assembly is preferred over through-hole. |
| P6KE11CA | Same DO-15 package and bidirectional function, but lower PPPM (600 W nominal, derated to ~400 W at TA > 25 °C); wider VBR tolerance (±10 %). | Lacks AEC-Q101 qualification; suitable for commercial-grade industrial equipment only. | Choose P6KE11CA for cost-sensitive non-automotive applications where full AEC-Q101 validation is not required. |
Compared with SMAJ11CA and P6KE11CA, the SA11CA-E3/54 uniquely combines AEC-Q101 qualification, tight ±5 % VBR tolerance, and 500 W rated pulse power in the proven DO-15 through-hole package - making it the preferred choice for automotive and high-reliability industrial deployments requiring traceable qualification and mechanical robustness.
Availability
SA11CA-E3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC analog inputs, telecom line protection, and appliance motor drive circuits requiring stable component supply and long-term lifecycle support.
Supply support for SA11CA-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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SAxxCA series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for robust bidirectional transient suppression in harsh environments including automotive, industrial, and telecommunications infrastructure.
FAQ
What is the clamping voltage of SA11CA-E3/54 at its rated peak pulse current?
The SA11CA-E3/54 clamps to a maximum of 18.2 V at its rated peak pulse current of 27.5 A (10/1000 μs waveform). This value is measured per standard test conditions in the Vishay datasheet (Document Number: 88378, Rev. 27-Sep-2021) and defines the upper voltage limit imposed on protected circuitry during surge events. The SA11CA-E3/54 achieves this with low dynamic impedance, ensuring predictable protection behavior across temperature and aging.
Is SA11CA-E3/54 qualified for automotive applications?
Yes, the SA11CA-E3/54 is AEC-Q101 qualified, as confirmed in the Vishay datasheet (note on page 3). This qualification covers stress tests including high-temperature operating life, temperature cycling, unbiased highly accelerated stress testing, and ESD. The SA11CA-E3/54 is therefore approved for use in automotive subsystems such as body control modules, sensor interfaces, and infotainment systems where reliability under thermal and electrical stress is mandatory.
Does SA11CA-E3/54 have polarity markings on the package?
No, the SA11CA-E3/54 has no polarity markings because it is a bidirectional TVS diode with symmetrical avalanche characteristics. Both terminals are functionally identical - either can serve as anode or cathode depending on transient polarity. This eliminates orientation concerns during manual or automated assembly and simplifies schematic symbol usage in bidirectional protection circuits.
What is the maximum junction temperature rating for SA11CA-E3/54?
The SA11CA-E3/54 has a maximum junction temperature (TJ) rating of +175 °C, as specified in the "Maximum Ratings" table of the Vishay datasheet. This allows reliable operation in high-temperature environments such as engine compartments or enclosed industrial enclosures. Derating applies above 25 °C ambient, and the device maintains full electrical specifications up to this limit when properly mounted with adequate thermal relief.
How does SA11CA-E3/54 differ from unidirectional SA11A-E3/54?
The SA11CA-E3/54 is bidirectional with symmetrical breakdown in both directions (VBR = 12.2–13.5 V, same forward/reverse), while the SA11A-E3/54 is unidirectional with cathode marking and asymmetric conduction (forward-biased like a rectifier). The SA11CA-E3/54 supports AC-coupled or floating-line protection without polarity constraints; the SA11A-E3/54 requires correct orientation and is used where DC bias direction is fixed, such as on power rails with defined ground reference.
SA11CA-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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 11V
- Voltage - Breakdown (Min):
- 12.2V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 27.5A
- 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)
SA11CA-E3/54 FAQ
1.How can I place an order for SA11CA-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA11CA-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 SA11CA-E3/54 reliable?
The price and inventory of SA11CA-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 SA11CA-E3/54 is usually 5 days.
3.What payment methods are accepted for SA11CA-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA11CA-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA11CA-E3/54?
SA11CA-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA11CA-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 SA11CA-E3/54?
For technical support, including SA11CA-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA11CA-E3/54 requirements.
6.How does Aetrix verify that SA11CA-E3/54 is sourced from the original manufacturer or authorized distributors?
All SA11CA-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 SA11CA-E3/54 meets industry standards.
7.What is the process for return or replacement of SA11CA-E3/54?
All SA11CA-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA11CA-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 SA11CA-E3/54 part is unused and in its original packaging.
Return procedure for SA11CA-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA11CA-E3/54 Tags
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