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Taiwan Semiconductor Corporation SA9.0H
- Part No.:
- SA9.0H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA9.0H.pdf
- Description:
- 500W, 11.1V, 10%, UNIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:9,563
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Product details
Overview
SA9.0H from Taiwan Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-204AC (DO-15) package, rated for 500W peak pulse power at 10/1000μs, with 9.0V working stand-off voltage (VWM), 10.0–12.2V breakdown voltage (VBR @ 1mA), and 16.9V maximum clamping voltage (VC) at 31A peak pulse current - designed for automotive-grade ESD and load-dump protection in power supply rails and signal lines.
For engineers reviewing the SA9.0H datasheet, SA9.0H pinout, SA9.0H application, or SA9.0H equivalent, this AEC-Q101 qualified TVS offers verified clamping performance, low leakage (<5μA @ 9.0V), fast response (<1.0ps), and robust surge immunity for 12V automotive systems, industrial control I/O, and DC-DC converter input protection.
Technical Context
The SA9.0H implements a silicon avalanche diode structure optimized for unidirectional clamping, with a specified VBR range of 10.0–12.2V at 1mA test current and guaranteed clamping voltage ≤16.9V at 31A IPPM. Its thermal design supports continuous operation up to TJ = +175°C and meets JESD201 Class 2 whisker resistance.
It complies with ANSI/IEEE C62.35 for transient suppression, features pure tin-plated leads per J-STD-002, and uses UL 94V-0 molding compound. The device is not bidirectional - polarity is marked by cathode band, and forward voltage is 3.5V max at 35A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum continuous reverse operating voltage before clamping begins; sets safe margin above 12V nominal rail. |
| VBR min/max | 10.0 / 12.2 V @ 1 mA - Confirmed avalanche onset range; ensures reliable turn-on during transients without premature conduction. |
| VC @ IPPM | 16.9 V @ 31 A - Clamped voltage under 10/1000μs surge; limits downstream IC stress to <17V during 500W events. |
| PPK | 500 W - Peak pulse power rating per 10/1000μs waveform; validated for ISO 7637-2 Pulse 1 & 2a load-dump immunity. |
| IR @ VWM | <5 μA - Reverse leakage at 9.0V; negligible power loss and minimal impact on high-impedance sensing circuits. |
| TJ max | +175 °C - Maximum junction temperature; enables placement near hot components (e.g., power MOSFETs, inductors) in engine bay modules. |
| Package | DO-204AC (DO-15) - Industry-standard axial leaded package with 0.400g mass; compatible with wave soldering and manual rework. |
Pinout & Package
DO-204AC (DO-15) package: axial-leaded, molded plastic case with cathode band marking polarity. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD201 Class 2 whisker resistance. Weight ≈0.400 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-voltage return path; defines clamping reference point for unidirectional operation. |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., battery feed); conducts avalanche current to anode during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive underhood applications including temperature cycling, humidity bias, and mechanical shock per AEC standard. |
| Clamping ratio VC/VBR | ≤1.69 - Low ratio confirms efficient energy diversion; reduces voltage overshoot compared to higher-ratio TVS devices. |
| Response time | <1.0 ps - Sub-picosecond turn-on enables protection of high-speed interfaces (e.g., LIN, CAN FD stubs) against ESD. |
| RoHS & halogen-free | Compliant with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU; suitable for green manufacturing and export compliance. |
| Surge robustness | Withstands 70A non-repetitive forward surge (8.3ms half-sine); protects against alternator load dump in 12V systems. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12V battery-fed ECUs from ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 2a (load dump) transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and system input filter capacitor. Use Value: Limits transient voltage to ≤16.9V, preventing damage to LDOs, microcontrollers, and CAN transceivers downstream. |
Use Scenario: Safeguarding analog sensor inputs (e.g., pressure, temperature) in PLC I/O modules exposed to field wiring surges. IC Role / Device Role / Timing Role: Front-end TVS on 24V sensor supply line, upstream of series resistor and TVS array. Use Value: Absorbs >500W surges while maintaining <5μA leakage, preserving signal integrity and ADC accuracy. |
| DC-DC Converter Input Protection | Lighting System Surge Suppression |
Use Scenario: Input-stage protection for buck converters in automotive body controllers handling switched 12V supplies. IC Role / Device Role / Timing Role: Primary clamping device across VIN and GND, sized to handle repetitive load-dump energy. Use Value: Enables reliable operation at TJ up to +175°C and withstands ≥1000 surge events per JESD22-A114. |
Use Scenario: Transient suppression in LED headlamp drivers subjected to ESD and relay-switching spikes. IC Role / Device Role / Timing Role: Parallel-connected TVS on LED string supply rail, adjacent to MOSFET switch node. Use Value: Clamps switching-induced overshoot to <17V, avoiding gate oxide stress on driver FETs and LED forward-voltage derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0A | Same VWM (9.0V) and DO-214AC package; lower PPK (400W), higher VC (18.2V @ 22.5A). | Limited to lower-energy transients; unsuitable for full ISO 7637-2 Pulse 2a compliance. | Select SMAJ9.0A only if board space requires SMD mounting and surge requirements are ≤400W. |
| P6SMB9.0A | Same VWM and DO-214AA package; identical PPK (600W), but higher VBR (10.0–12.7V) and VC (17.1V @ 35.1A). | Marginally higher clamping voltage may risk 12V logic interface reliability under worst-case surge. | Prefer P6SMB9.0A when higher surge margin is needed and layout allows larger DO-214AA footprint. |
Compared with SMAJ9.0A and P6SMB9.0A, the SA9.0H delivers optimal balance of AEC-Q101 qualification, 500W capability, and tight 16.9V clamping in the compact DO-15 through-hole package - making it the preferred choice for cost-sensitive, high-reliability automotive and industrial designs requiring proven qualification and axial lead compatibility.
Availability
SA9.0H is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and lighting applications requiring stable component supply, AEC-Q101 compliance, and through-hole assembly compatibility.
Supply support for SA9.0H 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 - headquartered in Hsinchu, Taiwan, with global distribution and AEC-Q101 validation capabilities.
The SA Series was developed specifically for automotive and industrial transient suppression, emphasizing high surge robustness, low clamping voltage, and qualification-grade reliability in axial and surface-mount packages.
FAQ
What is the AEC-Q101 qualification status of the SA9.0H?
The SA9.0H is explicitly designated as AEC-Q101 qualified per the manufacturer's ordering code suffix "H" and confirmed in the SA Series datasheet Version L2105. This qualification covers temperature cycling, high-temperature operating life, unbiased highly accelerated stress testing, and mechanical shock - validating its suitability for automotive underhood and chassis applications where SA9.0H is deployed.
Does the SA9.0H support bidirectional transient suppression?
No, the SA9.0H is a unidirectional TVS diode. Its datasheet specifies cathode band marking and lists separate electrical characteristics only for unidirectional operation - including VF = 3.5V max at 35A. Bidirectional variants in the SA Series use "CA" or "C" suffixes (e.g., SA9.0CA), which SA9.0H does not carry.
What is the maximum clamping voltage of the SA9.0H under standard test conditions?
The SA9.0H has a maximum clamping voltage (VC) of 16.9 V at 31 A peak pulse current (IPPM), measured using the 10/1000μs double-exponential surge waveform per ANSI/IEEE C62.35. This value is guaranteed across the full operating temperature range and forms the basis for downstream circuit voltage tolerance design when using SA9.0H.
Can the SA9.0H be used in place of the SA9.0A variant?
No - SA9.0H and SA9.0A are distinct variants: SA9.0H is AEC-Q101 qualified with identical electrical specs to SA9.0, while SA9.0A has tighter VBR (10.0–11.1 V) and higher VC (15.4 V). Substituting SA9.0H for SA9.0A may result in higher clamping voltage than expected in designs relying on SA9.0A's lower VC specification.
What is the recommended PCB layout practice for the SA9.0H in high-surge applications?
For optimal SA9.0H performance, minimize trace inductance between the device and protected node by placing it directly across the rail and ground with short, wide traces. Mount SA9.0H close to the connector or switching node, use thermal relief pads for DO-15 leads, and ensure ≥10 × 10 mm copper area per terminal to sustain 3W steady-state dissipation per datasheet derating curves.
SA9.0H 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):
- 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:
- -
- 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)
SA9.0H FAQ
1.How can I place an order for SA9.0H through Aetrix?
Please submit a Request for Quotation (RFQ) for SA9.0H 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 SA9.0H reliable?
The price and inventory of SA9.0H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA9.0H is usually 5 days.
3.What payment methods are accepted for SA9.0H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA9.0H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA9.0H?
SA9.0H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA9.0H 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 SA9.0H?
For technical support, including SA9.0H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA9.0H requirements.
6.How does Aetrix verify that SA9.0H is sourced from the original manufacturer or authorized distributors?
All SA9.0H 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 SA9.0H meets industry standards.
7.What is the process for return or replacement of SA9.0H?
All SA9.0H units undergo pre-shipment inspection (PSI). If there is an issue with SA9.0H, 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 SA9.0H part is unused and in its original packaging.
Return procedure for SA9.0H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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