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Taiwan Semiconductor Corporation SA9.0AH
- Part No.:
- SA9.0AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA9.0AH.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,833
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Product details
Overview
SA9.0AH from Taiwan Semiconductor is a unidirectional AEC-Q101-qualified transient voltage suppressor (TVS) diode in DO-204AC (DO-15) package, rated for 500W peak pulse power at 10/1000μs, 9.0V working stand-off voltage, and clamping voltage of 16.9V at 31A peak pulse current. It protects automotive power supply rails and ECU input circuits against ISO 7637-2 load dump and EFT transients.
For engineers reviewing the SA9.0AH datasheet, SA9.0AH pinout, SA9.0AH application, or SA9.0AH equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, clamping performance under standardized surge waveforms, thermal derating behavior, and direct-fit alternatives for automotive-grade TVS selection.
Technical Context
The SA9.0AH operates as a unidirectional avalanche diode with breakdown voltage VBR = 10.0–12.2V at 1mA test current, enabling precise overvoltage clamping above its 9.0V stand-off threshold. Its low dynamic impedance ensures stable clamping during fast transients, while its <1.0ps response time guarantees protection before sensitive downstream circuitry is stressed.
Designed for automotive environments, SA9.0AH supports junction temperatures from –55°C to +175°C and meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements. Its pure tin-plated leads comply with J-STD-002 solderability standards and support reflow and wave soldering processes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum continuous reverse operating voltage before leakage exceeds 5 μA |
| VBR min/max | 10.0 / 12.2 V @ 1 mA - Ensures reliable turn-on within defined tolerance band for predictable clamping onset |
| VC @ IPPM | 16.9 V @ 31 A - Clamped voltage during 10/1000μs surge, limiting stress on protected ICs |
| PPK | 500 W - Peak pulse power handling capability per single non-repetitive 10/1000μs waveform |
| IR @ VWM | <5 μA - Low leakage preserves system standby current budget in always-on automotive modules |
| TJ max | +175 °C - Enables placement near high-temperature engine control units without thermal derating penalties |
Pinout & Package
SA9.0AH uses the DO-204AC (DO-15) axial-leaded package with cathode band marking. Leads are pure tin-plated and solderable per J-STD-002. Device weight is approximately 0.400 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to ground or lower-potential rail in unidirectional clamp configuration |
| Cathode | Avalanche clamping terminal | Connected to protected line (e.g., 12V battery rail); marked by band; conducts during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS power domains |
| 500W peak pulse rating | Withstands ISO 7637-2 Pulse 5a (load dump) up to 40V superimposed on 13.5V nominal supply |
| Clamping voltage ≤16.9V | Keeps protected MCU I/O or regulator input below absolute maximum ratings during 31A surge events |
| Response time <1.0ps | Activates before transient energy couples into PCB traces or IC bond wires |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and automotive ELV directive requirements |
Applications
| Automotive Power Rail Protection | ECU Input Stage Protection |
|---|---|
Use Scenario: 12V battery rail in engine control unit exposed to ISO 7637-2 load dump transients up to 60V. IC Role / Device Role / Timing Role: Unidirectional TVS clamps excess voltage before it reaches LDO regulators and microcontroller power pins. Use Value: Limits rail voltage to ≤16.9V during 31A surge, preventing regulator latch-up and MCU brownout reset. | Use Scenario: LIN bus transceiver input subjected to ESD per IEC 61000-4-2 ±8kV contact discharge. IC Role / Device Role / Timing Role: Fast-response TVS shunts ESD current away from LIN PHY input pins. Use Value: Sub-1ps activation ensures clamping occurs before transceiver internal protection diodes conduct, reducing failure risk. |
| Body Control Module Surge Suppression | ADAS Camera Power Line Protection |
Use Scenario: Door module power input experiencing repetitive switching transients from window motor inductive kickback. IC Role / Device Role / Timing Role: TVS absorbs 500W inductive spikes without degradation across >10,000 cycles. Use Value: Maintains clamping performance after repeated 10/1000μs surges, ensuring long-term reliability in cyclic loads. | Use Scenario: 5V camera module power line exposed to EFT bursts per IEC 61000-4-4 ±2kV. IC Role / Device Role / Timing Role: Stand-off voltage of 9.0V allows normal operation while clamping EFT-induced overshoots. Use Value: Low 5μA leakage avoids loading 5V rail, preserving power integrity for image sensor analog front-end. |
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, 16.9V VC @ 31A, but not AEC-Q101 qualified | Suitable for industrial/commercial systems; lacks automotive qualification documentation and stress test history | Select when AEC-Q101 compliance is not required and cost sensitivity outweighs qualification assurance |
| ON Semiconductor 1.5SMC9.0A | DO-214AB package (SMB), 9.0V VWM, 16.9V VC @ 31A, AEC-Q101 qualified, higher thermal mass | Requires PCB layout change due to surface-mount SMB footprint; better thermal dissipation at TL = 75°C | Select when board space permits SMT placement and higher steady-state power handling (3W vs. SA9.0AH's 3W at same lead length) |
Compared with SMAJ9.0A and 1.5SMC9.0A, SA9.0AH uniquely combines AEC-Q101 qualification, axial DO-15 through-hole compatibility, and identical clamping performance-making it optimal for legacy automotive designs requiring drop-in replacement without layout revision or qualification revalidation.
Availability
SA9.0AH is available at Aetrix Electronics and suitable for automotive ECU design, body electronics integration, and ADAS power subsystem development requiring stable component supply and full AEC-Q101 traceability.
Supply support for SA9.0AH 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 automotive-grade transient suppression, emphasizing AEC-Q101 reliability, tight VBR tolerances, and robust surge endurance in harsh under-hood environments.
FAQ
What is the AEC-Q101 qualification status of SA9.0AH?
SA9.0AH is explicitly AEC-Q101 qualified per the manufacturer's ordering code suffix "H", confirmed in TSC SA Series datasheet Version L2105. This includes stress testing for temperature cycling, high-temperature operating life, unbiased highly accelerated stress testing, and ESD per HBM ≥8kV and CDM ≥1kV-validating suitability for automotive power and signal lines.
Does SA9.0AH support bidirectional transient suppression?
No, SA9.0AH is a unidirectional TVS diode, indicated by absence of "CA" or "C" suffix and presence of cathode band marking. Bidirectional operation requires SA9.0A or SA9.0CA variants. Using SA9.0AH in reverse-biased configurations risks permanent breakdown due to lack of symmetric avalanche structure.
What is the maximum clamping voltage of SA9.0AH under standard test conditions?
The maximum clamping voltage of SA9.0AH is 16.9V at 31A peak pulse current (IPPM) under the 10/1000μs double-exponential surge waveform, as specified in the SA Series datasheet Table on Page 4. This value is guaranteed across the full operating temperature range of –55°C to +175°C.
Can SA9.0AH replace SA9.0 in an existing design?
Yes, SA9.0AH is a direct functional and mechanical replacement for SA9.0, sharing identical electrical parameters (VWM, VBR, VC, PPK) and DO-204AC package. The "H" suffix adds AEC-Q101 qualification without altering pinout, marking, or thermal characteristics-enabling drop-in upgrade for automotive programs.
What is the reverse leakage current of SA9.0AH at its rated working voltage?
SA9.0AH exhibits a maximum reverse leakage current (IR) of 5 μA at its 9.0V working stand-off voltage (VWM), measured at TA = 25°C. This low leakage ensures minimal impact on standby power consumption in always-on automotive modules such as body control units and telematics gateways.
SA9.0AH 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:
- 15.4V
- Current - Peak Pulse (10/1000µs):
- 34A
- 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)
SA9.0AH FAQ
1.How can I place an order for SA9.0AH through Aetrix?
Please submit a Request for Quotation (RFQ) for SA9.0AH 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 SA9.0AH reliable?
The price and inventory of SA9.0AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA9.0AH is usually 5 days.
3.What payment methods are accepted for SA9.0AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA9.0AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA9.0AH?
SA9.0AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA9.0AH 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 SA9.0AH?
For technical support, including SA9.0AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA9.0AH requirements.
6.How does Aetrix verify that SA9.0AH is sourced from the original manufacturer or authorized distributors?
All SA9.0AH 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 SA9.0AH meets industry standards.
7.What is the process for return or replacement of SA9.0AH?
All SA9.0AH units undergo pre-shipment inspection (PSI). If there is an issue with SA9.0AH, 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 SA9.0AH part is unused and in its original packaging.
Return procedure for SA9.0AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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