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Taiwan Semiconductor Corporation SA9.0C
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- Part No.:
- SA9.0C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA9.0C.pdf
- Description:
- 500W, 11.1V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:6,099
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Product details
Overview
SA9.0C from Taiwan Semiconductor is a unidirectional 500W transient voltage suppressor (TVS) diode with 9.0V working stand-off voltage, 10.0–12.2V breakdown voltage at 1mA test current, and 16.9V maximum clamping voltage at 31A peak pulse current. It features sub-1ps response time, <1μA reverse leakage above 10V, and DO-204AC (DO-15) package for automotive-grade ESD and surge protection in power supply rails.
For engineers reviewing the SA9.0C datasheet, SA9.0C pinout, SA9.0C application, or SA9.0C equivalent, key selection criteria include clamping voltage margin versus IC VDD, unidirectional polarity marking, AEC-Q101 qualification status, and thermal derating above 25°C ambient per Fig.2.
Technical Context
The SA9.0C operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its 10.0–12.2V breakdown range. Its low dynamic impedance ensures rapid energy shunting during 10/1000μs transients, limiting downstream voltage to ≤16.9V at 31A.
Designed for automotive and industrial environments, it sustains 175°C junction temperature, meets JESD201 Class 2 whisker resistance, and uses pure tin-plated leads compliant with J-STD-002 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum continuous reverse operating voltage before conduction begins |
| VBR @ IT=1mA | 10.0–12.2 V - Breakdown threshold defining turn-on precision and tolerance band |
| VC @ IPPM=31A | 16.9 V - Clamped voltage during 10/1000μs surge; determines protected circuit's overvoltage ceiling |
| PPK | 500 W - Peak pulse power handling per single 1ms transient, non-repetitive |
| IR @ VWM | <1 μA - Reverse leakage ensuring minimal standby power loss and signal integrity |
| Response Time | <1.0 ps - Time from 0V to VBR; critical for sub-nanosecond ESD event suppression |
| TJ max | 175 °C - Maximum junction temperature enabling under-hood automotive deployment |
Pinout & Package
DO-204AC (DO-15) axial-leaded package with cathode band marking for unidirectional polarity. Leads are pure tin-plated, solderable per J-STD-002, and meet UL 94V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current input / Surge return path | Connected to system ground or low-impedance return plane during transient clamping |
| Cathode | Protected line connection | Connected to the rail being protected (e.g., 9V supply); marked with band |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified option available | SA9.0CH variant supports automotive-grade reliability validation per stress test requirements |
| Low clamping ratio (VC/VBR) | 1.69 typical - Minimizes overvoltage overshoot relative to breakdown, improving IC survivability |
| Sub-1ps response time | Enables effective suppression of human-body-model (HBM) ESD events without propagation delay |
| Halogen-free construction | Complies with IEC 61249-2-21, supporting RoHS-compliant manufacturing and end-of-life recycling |
| 175°C junction rating | Permits placement near heat sources (e.g., DC-DC converters) without thermal derating penalties |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12V battery-supplied control module exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and GND to clamp surges before they reach LDOs and microcontrollers. Use Value: Limits transient voltage to ≤16.9V, preventing latch-up or gate oxide damage in 5V/3.3V logic downstream. | Use Scenario: 4–20mA current loop transmitter interfacing with PLC analog inputs. IC Role / Device Role / Timing Role: SA9.0C guards the loop supply rail against induced transients from nearby motor switching. Use Value: Withstands 500W surges while maintaining <1μA leakage, preserving loop accuracy and long-term calibration stability. |
| LED Driver Input Stage | USB-C Power Delivery Line Protection |
Use Scenario: Constant-current LED driver powered from 9–12V source in commercial lighting fixture. IC Role / Device Role / Timing Role: Placed at input filter stage to absorb inductive kickback from relay or MOSFET switching. Use Value: Fast <1ps response prevents voltage spikes from propagating into PWM controller ICs, reducing field failure rates. | Use Scenario: USB-C PD port on portable medical device requiring ESD immunity per IEC 61000-4-2 Level 4. IC Role / Device Role / Timing Role: Unidirectional TVS on VCONN or CC lines where polarity is fixed and low capacitance is not required. Use Value: 16.9V clamping ensures PD controller remains within absolute maximum ratings during ±8kV contact discharge events. |
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 SMAJ9.0A | Same DO-204AC package, 9.0V VWM, but 10.0–11.1V VBR min/max and 14.4V VC @ 34A | Slightly lower clamping voltage; identical 500W rating and unidirectional configuration | Preferred where tighter clamping margin is needed, but verify layout compatibility with SMAJ series footprint tolerances |
| ON Semiconductor 1.5SMC9.0A | DO-214AB (SMC) package, 9.0V VWM, 10.0–11.1V VBR, 14.4V VC @ 34A, higher thermal mass | Surface-mount alternative with superior power dissipation; requires PCB rework for through-hole replacement | Select when board space allows SMT and higher steady-state power handling (5W vs. 3W) is required |
Compared with SMAJ9.0A and 1.5SMC9.0A, the SA9.0C offers identical electrical performance in a legacy through-hole DO-15 package optimized for manual assembly and high-vibration environments, with AEC-Q101 qualification available via SA9.0CH variant.
Availability
SA9.0C is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and LED driver input stage surge suppression requiring stable component supply across extended production lifecycles.
Supply support for SA9.0C 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 Company (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and Zener diodes for industrial and automotive markets.
The SA Series was developed specifically for robust, high-energy transient suppression in harsh environments-emphasizing low clamping voltage, fast response, and AEC-Q101 qualification readiness.
FAQ
What is the polarity configuration of SA9.0C?
The SA9.0C is a unidirectional TVS diode with cathode band marking indicating the terminal to be connected toward the protected voltage rail. It conducts only during reverse overvoltage events and blocks forward current like a standard rectifier diode. This polarity must be observed in PCB layout to ensure proper clamping behavior during transients.
Does SA9.0C meet AEC-Q101 qualification?
The base SA9.0C part is not AEC-Q101 qualified; however, the SA9.0CH variant-identical electrically and mechanically but manufactured and tested to AEC-Q101 stress requirements-is available. Always specify the "H" suffix when automotive qualification is required, as SA9.0C alone does not carry that certification.
What is the maximum peak pulse current rating for SA9.0C?
The SA9.0C is rated for 31A maximum peak pulse current (IPPM) under the standard 10/1000μs waveform. This value is derived from its 500W peak pulse power rating and 16.9V clamping voltage (P = V × I), and is validated per Fig.3 in the datasheet.
How does SA9.0C compare to bidirectional variants like SA9.0CA?
The SA9.0C is unidirectional and intended for DC rail protection with defined polarity; SA9.0CA is bidirectional and used where AC signals or undefined polarity require symmetrical clamping. They share identical VWM, VBR, and PPK, but SA9.0CA has no cathode band and clamps in both directions.
What is the thermal derating behavior of SA9.0C above 25°C ambient?
SA9.0C peak pulse power must be derated linearly above 25°C ambient per Fig.2 in the datasheet: at 75°C TA, it retains ~75% of rated 500W; at 125°C TA, ~50%; and at 175°C TA, zero pulse capability. Steady-state power dissipation remains limited to 3W at TL = 75°C with specified copper pad layout.
SA9.0C 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):
- 9V
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 16.9V
- Current - Peak Pulse (10/1000µs):
- 31A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
SA9.0C FAQ
1.How can I place an order for SA9.0C through Aetrix?
Please submit a Request for Quotation (RFQ) for SA9.0C 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 SA9.0C reliable?
The price and inventory of SA9.0C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA9.0C is usually 5 days.
3.What payment methods are accepted for SA9.0C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA9.0C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA9.0C?
SA9.0C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA9.0C 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 SA9.0C?
For technical support, including SA9.0C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA9.0C requirements.
6.How does Aetrix verify that SA9.0C is sourced from the original manufacturer or authorized distributors?
All SA9.0C 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 SA9.0C meets industry standards.
7.What is the process for return or replacement of SA9.0C?
All SA9.0C units undergo pre-shipment inspection (PSI). If there is an issue with SA9.0C, 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 SA9.0C part is unused and in its original packaging.
Return procedure for SA9.0C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA9.0C Tags
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