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Taiwan Semiconductor Corporation SA11C
- Part No.:
- SA11C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA11C.pdf
- Description:
- 500W, 13.6V, BIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,565
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Product details
Overview
SA11C from Taiwan Semiconductor is a unidirectional 500W transient voltage suppressor (TVS) diode in DO-204AC (DO-15) package, with 12.2V minimum breakdown voltage (VBR), 11V working stand-off voltage (VWM), and 20.1V maximum clamping voltage (VC) at 26A peak pulse current - designed for automotive-grade ESD and inductive load surge protection in power supply rails and signal lines.
For engineers reviewing the SA11C datasheet, SA11C pinout, SA11C application, or SA11C equivalent, this page delivers verified electrical parameters, polarity-aware mechanical layout guidance, AEC-Q101 qualification status, clamping performance under 10/1000μs transients, and real-world use cases in lighting drivers and automotive control modules.
Technical Context
The SA11C operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its 12.2–14.9V VBR range at 1mA test current. It clamps transients to ≤20.1V at 26A (10/1000μs), with <1.0ps response time from 0V to VBR, enabling protection of downstream logic and analog circuitry against fast-rising EFT and load-dump events.
Its DO-204AC (DO-15) package features pure tin-plated leads compliant with J-STD-002, UL 94V-0 molding compound, and JESD201 Class 2 whisker resistance. Maximum junction temperature is +175°C, supporting operation in under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum continuous reverse operating voltage before leakage rises significantly; sets safe margin below system rail voltage. |
| VBR (min/max) | 12.2 / 14.9 V @ 1 mA - Breakdown threshold range defining turn-on consistency across production units. |
| VC @ IPPM | 20.1 V @ 26 A - Clamped voltage during 10/1000μs surge; determines protected IC's maximum stress level. |
| PPK | 500 W - Peak pulse power handling capability per single non-repetitive 10/1000μs waveform. |
| IR @ VWM | <1 μA - Reverse leakage at rated stand-off voltage; ensures minimal standby power loss and signal integrity. |
| TJ(max) | +175 °C - Maximum junction temperature; enables deployment in high-ambient automotive and industrial locations. |
| Package | DO-204AC (DO-15) - Industry-standard axial leaded package with cathode band marking; compatible with through-hole assembly and manual rework. |
Pinout & Package
SA11C is a two-terminal unidirectional TVS diode in DO-204AC (DO-15) package. The cathode is marked by a band on the body; anode is unmarked end. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path); conducts during forward surge or bias conditions. |
| Cathode (banded end) | Reverse breakdown terminal | Connected to protected line (e.g., 12V rail); initiates clamping when reverse voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, lighting, and body electronics per stress test requirements. |
| 500W peak pulse rating (10/1000μs) | Withstands high-energy transients such as ISO 7637-2 Pulse 5a (load dump) without degradation. |
| <1.0ps response time (0V → VBR) | Engages before most microcontroller I/O pins can be damaged by sub-nanosecond ESD events. |
| RoHS & halogen-free (IEC 61249-2-21) | Complies with environmental regulations for global automotive and industrial manufacturing. |
| UL 94V-0 molded case | Provides flame-retardant housing suitable for enclosed high-reliability enclosures and under-hood modules. |
Applications
| Automotive Lighting Driver Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting LED driver ICs and MOSFET gate drivers from inductive kickback during PWM dimming in headlamp modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between switched 12V rail and ground, clamping negative transients generated by relay or inductor switching. Use Value: Limits voltage excursion to ≤20.1V, preventing latch-up or oxide damage in 24V-tolerant driver ICs while maintaining low leakage (<1μA) during normal operation. |
Use Scenario: Safeguarding 24V digital input channels on programmable logic controllers exposed to field wiring surges and EFT bursts. IC Role / Device Role / Timing Role: Standoff protection device mounted at connector entry point, shunting fast transients before they reach optocoupler or Schmitt-trigger input stages. Use Value: Delivers 500W surge immunity with 12.2V VBR, ensuring reliable detection of valid logic states even after repeated 10/1000μs surges up to 26A. |
| Automotive Body Control Module (BCM) | DC Power Supply Rail Protection |
Use Scenario: Shielding microcontroller GPIOs and CAN transceiver power pins from battery line transients during jump-start or alternator load dump. IC Role / Device Role / Timing Role: Primary clamping element on 5V/3.3V LDO inputs within BCM, coordinated with upstream fuse and ferrite bead filtering. Use Value: Achieves <1.0ps response and 20.1V clamping, keeping protected ICs within absolute maximum ratings during ISO 16750-2 Pulse 5a events. |
Use Scenario: Guarding buck converter feedback networks and enable pins against coupling from adjacent high-current switching nodes. IC Role / Device Role / Timing Role: Low-leakage (≤1μA) standoff protector on regulated output rails, minimizing impact on precision voltage sensing and soft-start timing. Use Value: Maintains system stability with 11V VWM margin over 10V nominal rail, while clamping spikes to 20.1V without affecting regulation loop dynamics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ11A | Unidirectional, same VWM (11V), but higher VC (23.0V @ 25.8A); 400W rating; SMA package (SMT). | Requires PCB redesign for surface-mount placement; less robust for high-temperature under-hood use due to lower PPK. | Choose SMAJ11A only if SMT assembly is mandatory and thermal derating allows 400W peak handling. |
| ON Semiconductor 1.5KE11A | Unidirectional, same VWM/VBR range, but larger DO-201AD package; 1500W rating; higher IPPM (124A). | Over-specified for 500W needs; requires larger board area and higher cost; not AEC-Q101 qualified. | Select 1.5KE11A only when legacy DO-201AD footprint exists and automotive qualification is not required. |
Compared with SMAJ11A and 1.5KE11A, SA11C offers optimal balance of AEC-Q101 compliance, 500W surge capacity, DO-15 through-hole compatibility, and tight 20.1V clamping - making it the preferred choice for new automotive and industrial designs requiring validated reliability and proven form-factor fit.
Availability
SA11C is available at Aetrix Electronics and suitable for automotive lighting systems, industrial PLC input modules, body control units, and DC power rail protection requiring stable component supply, long-term lifecycle support, and AEC-Q101 assurance.
Supply support for SA11C 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs, with global distribution and automotive qualification capabilities.
The SA Series TVS diodes are engineered for high-reliability transient suppression in automotive, industrial, and lighting applications - emphasizing low clamping voltage, fast response, and AEC-Q101 validation across voltage grades.
FAQ
What is the breakdown voltage range for SA11C?
The SA11C has a minimum breakdown voltage (VBR) of 12.2 V and a maximum of 14.9 V, measured at 1 mA test current per ANSI/IEEE C62.35. This range ensures consistent clamping behavior across production lots while allowing design margin for worst-case tolerance stacking in SA11C-based protection circuits.
Is SA11C AEC-Q101 qualified?
Yes, SA11C is AEC-Q101 qualified - confirmed in the SA Series datasheet Version L2105. This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD, validating SA11C for use in automotive powertrain, chassis, and body electronics where reliability is critical.
What is the clamping voltage of SA11C at rated surge current?
The SA11C clamps to a maximum of 20.1 V at 26 A peak pulse current (10/1000μs waveform). This value is specified in the "Maximum clamping voltage VC@IPPM" column of the SA Series electrical characteristics table and defines the upper voltage limit imposed on protected circuitry during surge events.
Does SA11C have bidirectional capability?
No, SA11C is unidirectional only. Its part number lacks the "CA" suffix (e.g., SA11CA), and the datasheet explicitly states that bipolar operation applies only to types with "C" or "CA" suffixes. SA11C must be oriented with cathode toward the protected line and anode to ground for proper function.
What package type does SA11C use, and how is polarity marked?
SA11C uses the DO-204AC (DO-15) axial package. Polarity is indicated by a cathode band on the body - the banded end is the cathode and must be connected to the line being protected. The unmarked end is the anode, typically tied to ground or the lower-potential reference.
SA11C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- SA
- 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:
- 20.1V
- Current - Peak Pulse (10/1000µs):
- 26A
- 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)
SA11C FAQ
1.How can I place an order for SA11C through Aetrix?
Please submit a Request for Quotation (RFQ) for SA11C 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 SA11C reliable?
The price and inventory of SA11C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA11C is usually 5 days.
3.What payment methods are accepted for SA11C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA11C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA11C?
SA11C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA11C 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 SA11C?
For technical support, including SA11C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA11C requirements.
6.How does Aetrix verify that SA11C is sourced from the original manufacturer or authorized distributors?
All SA11C 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 SA11C meets industry standards.
7.What is the process for return or replacement of SA11C?
All SA11C units undergo pre-shipment inspection (PSI). If there is an issue with SA11C, 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 SA11C part is unused and in its original packaging.
Return procedure for SA11C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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