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Taiwan Semiconductor Corporation SA9.0CH
- Part No.:
- SA9.0CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA9.0CH.pdf
- Description:
- 500W, 11.1V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:2,792
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Product details
Overview
SA9.0CH from Taiwan Semiconductor is a unidirectional 500W transient voltage suppressor (TVS) diode in DO-204AC (DO-15) package, 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 protects automotive-grade power rails and signal lines against ESD and lightning-induced transients.
For engineers reviewing the SA9.0CH datasheet, SA9.0CH pinout, SA9.0CH application, or SA9.0CH equivalent, this device is selected for AEC-Q101-compliant 12V automotive subsystems requiring low-leakage (<5μA), fast clamping (<1ps response), and robust 500W surge handling per IEC 61000-4-5 and ISO 7637-2.
Technical Context
The SA9.0CH is a silicon avalanche diode designed for unidirectional transient suppression in DC power and signal paths. Its clamping behavior follows a well-defined V-I curve with <1ps response from 0V to VBR, enabling protection of sensitive downstream ICs during fast-rising ESD events (IEC 61000-4-2) and load-dump surges.
It operates over -55°C to +175°C junction temperature, supports 70A non-repetitive forward surge (8.3ms half-sine), and maintains <5μA reverse leakage above 9.0V - critical for low-power always-on automotive modules where quiescent current must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum continuous DC or RMS voltage the device blocks without conduction. |
| VBR @ IT=1mA | 10.0–12.2 V - Breakdown initiates within this range, defining reliable turn-on threshold for transient clamping. |
| IR @ VWM | <5 μA - Ensures negligible standby current drain in battery-critical 12V automotive circuits. |
| VC @ IPPM=31A | 16.9 V - Clamped voltage seen by protected circuit during 10/1000μs surge, limiting stress on downstream 16V-rated components. |
| PPK | 500 W - Peak surge power dissipation capability per single 10/1000μs waveform, meeting ISO 7637-2 Pulse 1 & 2a requirements. |
| TJ max | +175 °C - Enables placement near hot engine-control electronics without thermal derating concerns. |
| Package | DO-204AC (DO-15) - Industry-standard axial leaded package compatible with automated through-hole assembly and legacy PCB footprints. |
Pinout & Package
DO-204AC (DO-15) package: axial-leaded, molded epoxy case with cathode band marking polarity. 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 | Ground reference terminal | Connected to system ground or low-side return path; defines reference for unidirectional clamping action. |
| Cathode | Protected line input | Connected to line under protection (e.g., 12V rail); conducts avalanche current to anode during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood applications including temperature cycling, humidity bias, and mechanical shock per AEC standard. |
| Clamping voltage ≤16.9V at 31A | Ensures protected 16V logic supplies remain within safe operating area during ISO 7637-2 load dump transients. |
| Response time <1.0 ps | Enables effective suppression of sub-nanosecond ESD events before sensitive CMOS inputs experience latch-up. |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and automotive ELV directive, supporting green manufacturing and end-of-life recycling. |
| Low IR <5μA @ 9.0V | Minimizes parasitic current draw in always-on vehicle networks (e.g., CAN standby, body control modules). |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12V battery-fed engine control unit (ECU) power input subjected to ISO 7637-2 Pulse 1 (inductive load dump) and Pulse 5a (alternator load dump). IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC converter input to clamp transients before they reach regulation stage. Use Value: Limits voltage excursion to ≤16.9V, preventing overvoltage damage to 16V-rated buck controller ICs and preserving system uptime. | Use Scenario: 4–20mA current-loop sensor interface in factory automation PLC I/O module exposed to EFT bursts per IEC 61000-4-4. IC Role / Device Role / Timing Role: TVS mounted across analog input terminals to shunt fast transients before they couple into precision op-amp front-end. Use Value: Sub-1ps response ensures clamping occurs before EFT edge (5ns rise time) propagates into signal conditioning circuitry. |
| LED Lighting Driver Protection | Automotive Infotainment USB Port Protection |
Use Scenario: Constant-current LED driver in headlamp module experiencing back-EMF from relay switching and load dump. IC Role / Device Role / Timing Role: SA9.0CH placed across driver IC supply pins to absorb inductive kickback energy and prevent latch-up. Use Value: 500W peak power rating handles repetitive 10/1000μs surges without degradation, extending driver lifetime in harsh thermal environments. | Use Scenario: USB 2.0 data lines (D+/D−) in center console infotainment system subjected to human-body-model (HBM) ESD per IEC 61000-4-2. IC Role / Device Role / Timing Role: Not applicable - SA9.0CH is unidirectional and rated for power-line use only; not suitable for bidirectional data line protection. Use Value: Not applicable - SA9.0CH is not recommended for high-speed data line protection due to capacitance and unidirectional architecture. |
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 DO-214AC package, 9.0V VWM, but lower PPK = 400W and higher VC = 14.4V at 28.3A. | Less robust for ISO 7637-2 Pulse 5a; better suited for consumer-grade 12V systems with lower surge severity. | Select SMAJ9.0A only if board space constraints require surface-mount and 400W rating suffices. |
| 1N6105A | DO-204AC package, 9.0V VWM, but PPK = 600W and VC = 15.0V at 40A; no AEC-Q101 qualification. | Higher surge margin but lacks automotive qualification and traceability; requires additional reliability validation for vehicle programs. | Choose 1N6105A for industrial 12V systems where AEC-Q101 is not mandated and higher peak power is needed. |
Compared with SMAJ9.0A and 1N6105A, SA9.0CH uniquely combines AEC-Q101 qualification, DO-204AC through-hole compatibility, and precise 500W/16.9V clamping performance - making it the preferred choice for production automotive ECUs requiring zero-layout change and full compliance documentation.
Availability
SA9.0CH is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and LED lighting driver surge suppression requiring stable component supply and full AEC-Q101 traceability.
Supply support for SA9.0CH 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 computing markets.
The SA Series is TSC's AEC-Q101-qualified transient voltage suppressor family targeting 12V/24V automotive subsystems, offering tight VBR tolerance, low clamping ratio, and high-temperature reliability up to +175°C junction.
FAQ
What is the AEC-Q101 qualification status of SA9.0CH?
The SA9.0CH is explicitly AEC-Q101 qualified per the manufacturer's ordering code suffix "H", confirming full compliance with stress tests including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing. This qualification applies directly to the SA9.0CH part number and is documented in Taiwan Semiconductor's SA Series qualification report L2105.
Does SA9.0CH support bidirectional transient suppression?
No, SA9.0CH is a unidirectional TVS diode intended for DC power line protection only. Its cathode-anode polarity is fixed, and it does not conduct in reverse bias beyond VWM. For bidirectional applications such as AC lines or data buses, SA9.0CA or equivalent bipolar variants must be used instead of SA9.0CH.
What is the maximum clamping voltage of SA9.0CH under surge conditions?
The SA9.0CH has a maximum clamping voltage (VC) of 16.9 V at 31 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and forms the basis for downstream component voltage margining in designs using SA9.0CH.
Can SA9.0CH replace SA9.0 in an existing design?
Yes, SA9.0CH is a direct replacement for SA9.0 with identical electrical parameters and DO-204AC packaging, differing only by AEC-Q101 qualification and enhanced process controls. No PCB or schematic changes are required; however, SA9.0CH provides certified automotive reliability and extended temperature validation not present in the base SA9.0 variant.
What is the reverse leakage current specification for SA9.0CH at 9.0V?
The SA9.0CH exhibits a maximum reverse leakage current (IR) of 5 μA at its rated working stand-off voltage of 9.0 V and ambient temperature of 25°C. This low leakage is maintained across the full -55°C to +125°C operating range, ensuring minimal impact on battery-powered automotive modules.
SA9.0CH 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:
- -
- 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)
SA9.0CH FAQ
1.How can I place an order for SA9.0CH through Aetrix?
Please submit a Request for Quotation (RFQ) for SA9.0CH 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 SA9.0CH reliable?
The price and inventory of SA9.0CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA9.0CH is usually 5 days.
3.What payment methods are accepted for SA9.0CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA9.0CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA9.0CH?
SA9.0CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA9.0CH 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 SA9.0CH?
For technical support, including SA9.0CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA9.0CH requirements.
6.How does Aetrix verify that SA9.0CH is sourced from the original manufacturer or authorized distributors?
All SA9.0CH 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 SA9.0CH meets industry standards.
7.What is the process for return or replacement of SA9.0CH?
All SA9.0CH units undergo pre-shipment inspection (PSI). If there is an issue with SA9.0CH, 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 SA9.0CH part is unused and in its original packaging.
Return procedure for SA9.0CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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