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Taiwan Semiconductor Corporation SA13CA
- Part No.:
- SA13CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA13CA.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,615
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Product details
Overview
SA13CA from Taiwan Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in DO-204AC (DO-15) package, rated for 500W peak pulse power at 10/1000μs, with 13V working stand-off voltage (VWM), 14.4–17.6V breakdown voltage (VBR), and 24.0A maximum peak pulse current (IPPM). It protects automotive and industrial circuits against ESD, EFT, and inductive switching transients.
For engineers reviewing the SA13CA datasheet, SA13CA pinout, SA13CA application, or SA13CA equivalent, this page delivers verified electrical parameters, clamping behavior under surge conditions, thermal derating curves, AEC-Q101 qualification status, and real-world protection use cases for sensitive IC interfaces and power rails.
Technical Context
The SA13CA is a silicon avalanche diode designed for bidirectional transient suppression, with symmetrical VBR min/max (14.4–17.6V) and VC of 21.5V at IPPM = 24.0A. Its low clamping ratio (VC/VBR ≈ 1.3–1.5) ensures effective overvoltage limiting during fast transients.
It operates across –55°C to +175°C junction temperature, supports 1μA reverse leakage at VWM = 13V, and exhibits <5ns response time for bidirectional surges - critical for IEC 61000-4-2/4-4/4-5 compliance in automotive ECUs and industrial controllers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - Maximum continuous DC or RMS voltage the device blocks without conduction |
| VBR @ IT=1mA | 14.4–17.6 V - Breakdown initiates within this range at 1mA test current, defining turn-on threshold |
| VC @ IPPM=24.0A | 21.5 V - Clamped voltage seen by protected circuit during 10/1000μs surge, limiting stress |
| PPK | 500 W - Peak surge power handling per single non-repetitive 10/1000μs waveform |
| IR @ VWM | <1 μA - Negligible leakage current at operating voltage, minimizing standby power loss |
| TJ max | +175 °C - Enables placement near hot components (e.g., power MOSFETs, motor drivers) |
| Package | DO-204AC (DO-15) - Industry-standard axial leaded package with UL 94V-0 molding and tin-plated leads |
Pinout & Package
DO-204AC (DO-15) package: axial-leaded, cylindrical glass-passivated body, cathode band marking for unidirectional variants only; SA13CA is bidirectional and has no polarity marking - both terminals are functionally identical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional surge path | Either terminal serves as input/output - no polarity dependency; connects across protected line-to-line or line-to-ground |
| Lead 1 / Lead 2 | PCB termination points | Standard tinned copper leads compliant with J-STD-002 solderability; 0.400g unit weight, 9.5mm lead length for thermal derating |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensors |
| 500W 10/1000μs surge rating | Withstands high-energy transients from load dump, alternator ripple, and relay coil flyback |
| <5ns response time (bidirectional) | Clamps before transient energy couples into downstream ICs - essential for USB, CAN, LIN interfaces |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and automotive ELV directives for sustainable manufacturing |
| Low clamping voltage (21.5V @ 24A) | Protects 12V systems (e.g., microcontrollers, transceivers) without exceeding safe overvoltage margins |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12V battery rail in engine control units exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS placed between power rail and ground to clamp transients before reaching MCU power pins. Use Value: Limits voltage to ≤21.5V during 500W surges, preventing latch-up or permanent damage to 3.3V/5V logic supplies. | Use Scenario: Analog sensor outputs (e.g., pressure, temperature) connected to PLC analog inputs over long cables. IC Role / Device Role / Timing Role: Line-to-line TVS on differential pair to suppress EFT bursts and induced lightning surges. Use Value: Maintains signal integrity by clamping common-mode transients below ADC input absolute maximum ratings. |
| LED Lighting Driver Protection | Communication Bus ESD Hardening |
Use Scenario: Constant-current LED driver ICs subjected to inductive switching spikes from MOSFET gate drive loops. IC Role / Device Role / Timing Role: TVS across driver output and ground to absorb flyback energy from boost inductor or LED string. Use Value: Prevents overvoltage failure of driver IC's internal FETs and sense resistors during rapid current transitions. | Use Scenario: CAN FD or LIN bus lines in vehicle networks exposed to human-body-model (HBM) ESD events. IC Role / Device Role / Timing Role: Bidirectional TVS on data lines to shunt ±15kV HBM discharges while preserving signal rise/fall times. Use Value: Ensures bus communication remains functional after repeated ESD strikes without requiring system reset. |
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 SMAJ13CA | Same DO-204AC package, 13V VWM, 21.5V VC @ 24.2A; slightly higher IR (≤5μA vs. ≤1μA) | Identical AEC-Q101 qualification and IEC 61000-4-2/4-5 performance; used interchangeably in automotive modules | Preferred where Littelfuse supply chain alignment or dual-sourcing is required |
| ON Semiconductor 1.5SMC13CA | DO-214AB (SMC) package - larger footprint, higher thermal mass; same VWM/VC specs but 25A IPPM rating | Better suited for high-temperature environments (>125°C ambient) due to superior power dissipation capability | Select when board layout allows SMC footprint and thermal management requires >3W steady-state dissipation |
Compared with SMAJ13CA and 1.5SMC13CA, SA13CA offers tighter leakage (<1μA), identical clamping performance in a cost-optimized DO-15 form factor - ideal for space-constrained automotive PCBs where AEC-Q101 compliance and low standby current are prioritized.
Availability
SA13CA is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, LED lighting driver surge suppression, and CAN/LIN bus ESD mitigation requiring stable component supply and full AEC-Q101 traceability.
Supply support for SA13CA 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 for automotive, industrial, and consumer markets.
The SA Series was developed specifically for robust, high-reliability transient suppression in harsh automotive environments - emphasizing AEC-Q101 qualification, tight parametric tolerances, and stable clamping under temperature extremes.
FAQ
What is the clamping voltage of SA13CA at its rated peak pulse current?
The SA13CA clamps to a maximum of 21.5 V when subjected to its rated peak pulse current of 24.0 A under the standard 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees protection for 12 V nominal systems without exceeding safe overvoltage thresholds for downstream ICs. The clamping voltage is confirmed in the official SA Series datasheet Table on page 4.
Is SA13CA unidirectional or bidirectional, and how is polarity marked?
SA13CA is a bidirectional TVS diode - it provides symmetrical transient suppression in both directions and has no polarity marking on the DO-204AC (DO-15) package. Unlike unidirectional SA13 variants (e.g., SA13), the "CA" suffix explicitly denotes bidirectional functionality, and the device may be installed without regard to orientation on PCBs protecting AC-coupled or differential signal lines.
Does SA13CA meet AEC-Q101 reliability standards for automotive use?
Yes, SA13CA is AEC-Q101 qualified - confirmed in the SA Series datasheet Version L2105, Section "FEATURES". This qualification covers stress tests including high-temperature operating life (HTOL), temperature cycling, and ESD (HBM/MM), making SA13CA suitable for under-hood and cabin automotive applications such as body control modules, lighting systems, and infotainment power supplies.
What is the maximum junction temperature and thermal derating behavior of SA13CA?
The SA13CA has a maximum junction temperature (TJ max) of +175 °C and follows a linear derating curve above TA = 25 °C, reducing peak pulse power capability by ~0.5% per °C rise - detailed in Figure 2 of the SA Series datasheet. At 125 °C ambient, its 500 W rating drops to approximately 300 W, ensuring safe operation in high-temperature engine bay environments when mounted per JEDEC standards.
How does SA13CA compare to SA13 in terms of electrical performance and application scope?
SA13CA differs from SA13 in being bidirectional with symmetrical VBR (14.4–17.6 V) and identical clamping (21.5 V), whereas SA13 is unidirectional with forward VF = 3.5 V at 35 A. SA13CA is used for AC line, differential bus, or floating rail protection; SA13 suits DC power rail or signal line with defined polarity. Both share DO-204AC packaging and AEC-Q101 qualification, but SA13CA replaces SA13 only in bidirectional contexts.
SA13CA 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):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 21.5V
- Current - Peak Pulse (10/1000µs):
- 24A
- 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)
SA13CA FAQ
1.How can I place an order for SA13CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SA13CA 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 SA13CA reliable?
The price and inventory of SA13CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA13CA is usually 5 days.
3.What payment methods are accepted for SA13CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA13CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA13CA?
SA13CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA13CA 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 SA13CA?
For technical support, including SA13CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA13CA requirements.
6.How does Aetrix verify that SA13CA is sourced from the original manufacturer or authorized distributors?
All SA13CA 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 SA13CA meets industry standards.
7.What is the process for return or replacement of SA13CA?
All SA13CA units undergo pre-shipment inspection (PSI). If there is an issue with SA13CA, 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 SA13CA part is unused and in its original packaging.
Return procedure for SA13CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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