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Taiwan Semiconductor Corporation SA13A
- Part No.:
- SA13A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA13A.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,473
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Product details
Overview
SA13A from Taiwan Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-204AC (DO-15) package, designed for high-energy surge protection in automotive and industrial power rails. It features a 13 V working stand-off voltage (VWM), 14.4–15.9 V breakdown voltage (VBR) at 1 mA, 24.0 A peak pulse current (IPPM), 21.5 V clamping voltage (VC) at IPPM, and 500 W peak pulse power rating at 10/1000 µs waveform.
For engineers reviewing the SA13A datasheet, SA13A pinout, SA13A application, or SA13A equivalent, key selection criteria include clamping performance under 10/1000 µs transients, low leakage (<1 µA @ 13 V), AEC-Q101 qualification availability (SA13AH variant), thermal robustness (TJ max = 175 °C), and compatibility with standard DO-15 PCB footprints and reflow profiles.
Technical Context
The SA13A operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its specified VBR range (14.4–15.9 V). Its low dynamic impedance ensures rapid clamping response-typically <1.0 ps from 0 V to VBR-minimizing overvoltage exposure to downstream ICs during ESD or load-dump events.
It complies with IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and ISO 7637-2 (automotive transients) immunity requirements. The device sustains 500 W non-repetitive surges per 10/1000 µs waveform, with derating above 25 °C per Fig.2 and maximum junction temperature of 175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR @ IT=1 mA | 14.4–15.9 V - Avalanche breakdown threshold defining turn-on precision |
| VC @ IPPM | 21.5 V - Clamped voltage at 24.0 A peak pulse, limiting stress on protected circuitry |
| PPK | 500 W - Peak surge power handling at 10/1000 µs waveform, critical for ISO 7637-2 Pulse 5a |
| IR @ VWM | <1 µA - Negligible leakage current at rated stand-off voltage, preserving system efficiency |
| TJ max | 175 °C - Enables operation in under-hood automotive environments and high-ambient industrial enclosures |
| Package | DO-204AC (DO-15) - Industry-standard axial-leaded package compatible with legacy through-hole and wave-solder processes |
Pinout & Package
DO-204AC (DO-15) package with axial leads: cathode indicated by band marking; anode and cathode terminals defined per polarity marking. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Forward current entry / Reverse voltage reference | Connected to ground or low-side return path in unidirectional clamp configuration |
| Cathode (banded end) | Avalanche conduction terminal | Connected to protected line (e.g., 12 V rail); conducts surge current to ground when V > VBR |
Key Features
| Feature | Design Value |
|---|---|
| Fast avalanche response | <1.0 ps rise time from 0 V to VBR enables sub-nanosecond suppression of ESD events |
| Low clamping ratio (VC/VBR) | ~1.35 - Minimizes overvoltage margin between breakdown and clamping, improving protection headroom |
| AEC-Q101 qualification option | SA13AH variant available - Validated for automotive powertrain and body electronics applications |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive - Supports green manufacturing and end-of-life compliance |
| High surge robustness | Withstands 70 A IFSM (8.3 ms half-sine) - Suitable for inductive load switching and alternator load dump |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply lines in vehicle ECUs against ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 5a (load dump). IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC input, clamping transients before they reach regulator ICs. Use Value: Limits peak voltage to ≤21.5 V during 500 W surges, preventing latch-up or damage to 36 V-rated input regulators. | Use Scenario: Shielding analog sensor inputs (e.g., pressure, temperature) from EFT bursts in factory automation PLC modules. IC Role / Device Role / Timing Role: TVS located at connector interface, shunting fast transients before signal conditioning op-amps or ADC front-ends. Use Value: Sub-1 ns response and <1 µA leakage preserve signal integrity and offset accuracy in µV-level measurement circuits. |
| LED Driver Overvoltage Clamp | Power Supply Input Stage Protection |
Use Scenario: Safeguarding constant-current LED drivers in streetlight systems exposed to lightning-induced surges on AC mains input. IC Role / Device Role / Timing Role: Placed across bulk capacitor input after bridge rectifier, absorbing line-to-ground transients. Use Value: 500 W rating and 175 °C TJ max allow reliable operation in outdoor enclosures without active cooling. | Use Scenario: Front-end protection for industrial AC/DC power supplies subjected to repetitive switching noise and grid disturbances. IC Role / Device Role / Timing Role: Primary TVS on DC bus input, coordinating with MOVs and filters to handle multi-stress event sequences. Use Value: Low VWM (13 V) and tight VBR tolerance (±5.3%) ensure precise coordination with secondary protection stages. |
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 SMAJ13A | Same DO-214AC package; VBR = 14.4–15.9 V, VC = 21.5 V, PPK = 400 W - 20% lower surge rating | Rated for commercial/industrial use only; not AEC-Q101 qualified | Preferred where cost sensitivity outweighs automotive qualification or 500 W margin |
| ON Semiconductor 1.5SMC13A | DO-214AB package; VBR = 14.4–15.9 V, VC = 21.5 V, PPK = 1500 W - higher power but larger footprint | Surface-mount design requires PCB layout change; better suited for high-density SMPS inputs | Select when board space allows SMC package and >500 W headroom is required for worst-case surge profiles |
Compared with SMAJ13A and 1.5SMC13A, the SA13A delivers identical clamping performance in a lower-cost DO-15 through-hole package with optional AEC-Q101 qualification, making it optimal for cost-constrained automotive modules and legacy industrial designs requiring proven axial-leaded reliability.
Availability
SA13A is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and LED driver overvoltage clamping requiring stable component supply across extended production lifecycles.
Supply support for SA13A 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 headquartered in Hsinchu, Taiwan, specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for industrial and automotive markets.
The SA Series was developed specifically for high-reliability transient suppression in harsh environments, emphasizing tight parametric control, AEC-Q101 qualification pathways, and robust surge endurance in standard axial packages.
FAQ
What is the clamping voltage of SA13A at its rated peak pulse current?
The SA13A has a maximum clamping voltage (VC) of 21.5 V when subjected to its rated peak pulse current (IPPM) of 24.0 A under the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events. Maintaining VC below 22 V ensures compatibility with 24 V nominal systems and prevents overstress of downstream 36 V-input DC-DC converters.
Is SA13A unidirectional or bidirectional, and how is polarity identified?
The SA13A is a unidirectional TVS diode, intended for DC line protection where polarity is fixed. Polarity is identified by a cathode band marked on the DO-204AC (DO-15) package body - the banded end is the cathode and must be connected toward the protected line (e.g., +12 V rail), while the unmarked end (anode) connects to ground. Bidirectional variants use "CA" suffix (e.g., SA13CA), which SA13A does not carry.
Does SA13A meet automotive qualification standards?
The base SA13A is not AEC-Q101 qualified; however, the SA13AH variant - identical in electrical specs and DO-15 packaging - is fully AEC-Q101 qualified per Rev L2105 documentation. SA13AH undergoes stress testing including temperature cycling, humidity bias, and high-temperature operating life to validate suitability for automotive powertrain and body control modules.
What is the maximum junction temperature and thermal derating behavior of SA13A?
The SA13A has a maximum junction temperature (TJ max) of 175 °C and follows a linear derating curve above 25 °C ambient, as shown in Fig.2 of the datasheet. At 75 °C ambient, its peak pulse power drops to ~70% of rated 500 W. This derating ensures safe operation in engine bay or industrial control cabinet environments where sustained high ambient temperatures occur.
Can SA13A be used in place of SA13, and what is the key difference?
Yes, SA13A can replace SA13 in most designs, with the key difference being tighter VBR tolerance: SA13A specifies 14.4–15.9 V (±5.3%), while SA13 specifies 14.4–17.6 V (±11%). The narrower breakdown range improves clamping consistency and reduces variation in system-level surge response. Both share identical VWM (13 V), VC (21.5 V), IPPM (24.0 A), and DO-15 packaging.
SA13A 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:
- 1
- Bidirectional Channels:
- -
- 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)
SA13A FAQ
1.How can I place an order for SA13A through Aetrix?
Please submit a Request for Quotation (RFQ) for SA13A 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 SA13A reliable?
The price and inventory of SA13A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA13A is usually 5 days.
3.What payment methods are accepted for SA13A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA13A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA13A?
SA13A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA13A 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 SA13A?
For technical support, including SA13A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA13A requirements.
6.How does Aetrix verify that SA13A is sourced from the original manufacturer or authorized distributors?
All SA13A 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 SA13A meets industry standards.
7.What is the process for return or replacement of SA13A?
All SA13A units undergo pre-shipment inspection (PSI). If there is an issue with SA13A, 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 SA13A part is unused and in its original packaging.
Return procedure for SA13A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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