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Taiwan Semiconductor Corporation SA9.0CAH
- Part No.:
- SA9.0CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA9.0CAH.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,696
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Product details
Overview
SA9.0CAH from Taiwan Semiconductor is a bidirectional AEC-Q101-qualified transient voltage suppressor (TVS) diode in DO-204AC (DO-15) package, designed for automotive and industrial surge protection. It features 9.0 V working stand-off voltage, 10.0–12.2 V breakdown voltage at 1 mA test current, 16.9 V maximum clamping voltage at 31 A peak pulse current, and 500 W peak pulse power rating per 10/1000 μs waveform.
For engineers reviewing the SA9.0CAH datasheet, SA9.0CAH pinout, SA9.0CAH application, or SA9.0CAH equivalent, key selection criteria include bidirectional ESD/EFM immunity performance, clamping voltage margin relative to protected IC rails, AEC-Q101 qualification status, DO-15 mechanical compatibility, and leakage current <5 μA at 9.0 V.
Technical Context
The SA9.0CAH is a silicon avalanche diode configured as a bidirectional TVS, with symmetrical breakdown characteristics in both polarities. Its electrical behavior follows IEEE C62.35 standards for transient suppression, delivering sub-nanosecond response time (<5 ns) and low dynamic impedance during surge events.
It operates across –55 °C to +175 °C junction temperature range and maintains stable VBR temperature coefficient of 9 mV/°C. The device is rated for 70 A non-repetitive forward surge current (8.3 ms half-sine) and exhibits <1 μA reverse leakage above 10 V, confirming tight voltage threshold control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum continuous DC or RMS voltage the device blocks without conduction |
| VBR min/max | 10.0 / 12.2 V at 1 mA - Ensures reliable turn-on before protected circuit exceeds safe voltage |
| VC @ IPPM | 16.9 V at 31 A - Clamped voltage seen by downstream IC during 10/1000 μs surge |
| PPK | 500 W - Peak transient energy absorption capability under standardized surge waveform |
| IR @ VWM | <5 μA - Negligible standby power loss and signal integrity impact in high-impedance circuits |
| TJ max | +175 °C - Enables use in under-hood automotive environments and high-power industrial enclosures |
| Package | DO-204AC (DO-15) - Industry-standard axial leaded package with 0.400 g mass and UL 94V-0 molding compound |
Pinout & Package
SA9.0CAH is a two-terminal bidirectional TVS diode housed in DO-204AC (DO-15) package. Polarity is not applicable; terminals are symmetric and interchangeable. 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/Cathode (symmetrical) | Transient current path | Both terminals conduct identically during positive or negative transients; no polarity marking required |
| Leads (axial) | PCB interface & thermal path | Provide mechanical anchoring and conduct heat to copper pads; 9.5 mm lead length supports 3 W steady-state dissipation at TL = 75 °C |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress per JEDEC standards |
| Bidirectional clamping | Identical VBR (10.0–12.2 V) and VC (16.9 V) in both directions enables single-device protection of AC-coupled or floating lines |
| Low clamping ratio | VC/VBR ≈ 1.52 ensures minimal overvoltage exposure to protected ICs during 31 A surges |
| Fast transient response | <5 ns response time guarantees suppression before sensitive logic or analog circuitry is disrupted |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive for environmentally constrained applications |
Applications
| Automotive LIN Bus Protection | Industrial CAN Transceiver Interface |
|---|---|
Use Scenario: Protecting LIN transceivers against load dump and EFT pulses in body control modules. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across LIN bus pins to limit transients to ≤16.9 V while maintaining 9.0 V operating margin. Use Value: Prevents transceiver latch-up or permanent damage during ISO 7637-2 Pulse 1/2a/5a events without adding series impedance or signal delay. | Use Scenario: Safeguarding isolated CAN FD transceivers in motor drive control units exposed to inductive switching noise. IC Role / Device Role / Timing Role: TVS placed differential-mode across CAN_H/CAN_L to suppress common-mode surges up to 500 W without distorting bit timing. Use Value: Maintains signal integrity during 10/1000 μs surges while meeting ISO 16750-2 Class III immunity requirements. |
| LED Driver Output Stage | Smart Sensor Signal Conditioning |
Use Scenario: Shielding constant-current LED driver outputs from inductive kickback when driving solenoid loads. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing reverse EMF spikes exceeding 16.9 V clamping threshold during MOSFET turn-off. Use Value: Eliminates need for freewheeling diodes or RC snubbers, reducing BOM count and PCB area in space-constrained lighting modules. | Use Scenario: Protecting analog front-end inputs of MEMS pressure sensors in engine management systems. IC Role / Device Role / Timing Role: Low-leakage (<5 μA) bidirectional clamp preserving sensor offset accuracy while suppressing ESD per IEC 61000-4-2 Level 4. Use Value: Enables direct connection to unshielded harnesses without degrading 16-bit ADC resolution or introducing measurement drift. |
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 | Unidirectional; 10.0–11.1 V VBR; DO-214AC (SMA) package; 1.5x smaller footprint | Requires separate devices for bidirectional protection; unsuitable for AC or floating-line use without external diode pairing | Select SMAJ9.0A only if board space is critical and circuit topology permits unidirectional-only placement. |
| P6SMB9.0A | Unidirectional; 10.0–11.1 V VBR; DO-214AA (SMB) package; 600 W PPK rating | Higher surge rating but lacks AEC-Q101 qualification; higher IR (>10 μA) reduces suitability for precision analog nodes | Choose P6SMB9.0A for cost-sensitive industrial designs where automotive qualification is not mandated. |
Compared with SMAJ9.0A and P6SMB9.0A, SA9.0CAH uniquely delivers AEC-Q101 compliance, true bidirectional symmetry, and DO-15 mechanical robustness-making it the only drop-in solution for automotive LIN, CAN, and sensor interfaces requiring validated reliability and polarity-agnostic clamping.
Availability
SA9.0CAH is available at Aetrix Electronics and suitable for automotive electronics, industrial motor controls, LED lighting systems, and smart sensor modules requiring stable component supply and long-term lifecycle support.
Supply support for SA9.0CAH 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 automotive-qualified components.
The SA Series was developed specifically for AEC-Q101-compliant transient suppression in automotive infotainment, body electronics, and powertrain subsystems, emphasizing robust clamping, low leakage, and high-temperature operation.
FAQ
What does the "H" suffix in SA9.0CAH signify?
The "H" suffix in SA9.0CAH indicates full AEC-Q101 qualification, covering stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD robustness. This certification confirms SA9.0CAH meets automotive-grade reliability requirements for under-hood and chassis-mounted applications, unlike standard SA9.0CA variants.
Is SA9.0CAH unidirectional or bidirectional?
SA9.0CAH is a bidirectional TVS diode, meaning it provides identical clamping performance for both positive and negative transients. Its datasheet specifies matched VBR (10.0–12.2 V) and VC (16.9 V) values in either polarity, enabling single-device protection of AC-coupled buses like LIN or differential interfaces without polarity concerns.
What is the maximum clamping voltage of SA9.0CAH during a surge event?
The maximum clamping voltage of SA9.0CAH is 16.9 V, measured at 31 A peak pulse current under the standardized 10/1000 μs waveform. This value represents the highest voltage imposed on protected circuitry during worst-case surge conditions and is critical for ensuring downstream ICs remain within absolute maximum ratings.
Can SA9.0CAH replace SA9.0A in an existing design?
SA9.0CAH cannot directly replace SA9.0A without validation, because SA9.0CAH is bidirectional while SA9.0A is unidirectional. Swapping them may cause unintended conduction in DC-biased circuits. SA9.0CAH requires symmetric placement across floating or AC lines; SA9.0A must be oriented with cathode toward the protected rail.
What packaging options are available for SA9.0CAH?
SA9.0CAH is supplied in DO-204AC (DO-15) package with two packing options: 3,500 units per tape-and-reel (standard) and 1,500 units per ammo box. Both formats use pure tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance requirements.
SA9.0CAH 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:
- 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)
SA9.0CAH FAQ
1.How can I place an order for SA9.0CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for SA9.0CAH 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 SA9.0CAH reliable?
The price and inventory of SA9.0CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA9.0CAH is usually 5 days.
3.What payment methods are accepted for SA9.0CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA9.0CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA9.0CAH?
SA9.0CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA9.0CAH 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 SA9.0CAH?
For technical support, including SA9.0CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA9.0CAH requirements.
6.How does Aetrix verify that SA9.0CAH is sourced from the original manufacturer or authorized distributors?
All SA9.0CAH 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 SA9.0CAH meets industry standards.
7.What is the process for return or replacement of SA9.0CAH?
All SA9.0CAH units undergo pre-shipment inspection (PSI). If there is an issue with SA9.0CAH, 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 SA9.0CAH part is unused and in its original packaging.
Return procedure for SA9.0CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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