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Taiwan Semiconductor Corporation SMB10J9.0AH
- Part No.:
- SMB10J9.0AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J9.0AH.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,811
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Product details
Overview
SMB10J9.0AH from Taiwan Semiconductor is a unidirectional 1000W transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, with 9.0V stand-off voltage (VWM), 10.0–11.1V breakdown voltage (VBR), and 15.4V clamping voltage (VC) at 64.9A peak pulse current - designed for automotive lighting and ESD protection of microcontrollers and communication interfaces.
For engineers reviewing the SMB10J9.0AH datasheet, SMB10J9.0AH pinout, SMB10J9.0AH application, or SMB10J9.0AH equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, 1.0ps response time, and DO-214AA thermal performance (RθJL = 20°C/W).
Technical Context
This TVS diode operates as a unidirectional clamping device with glass-passivated junction and cathode-band polarity marking. It delivers 1000W peak pulse power (tp = 1 ms) at 25°C and supports steady-state dissipation up to 5W, with junction temperature range from –55°C to +175°C.
Its fast response (<1.0ps) enables suppression of EFT and inductive switching transients before sensitive ICs are damaged. Compliance with ISO 7637-2 Pulse 1 (inductive load dump), Pulse 2a/2b (battery disconnection), and Pulse 3a/3b (capacitive coupling) confirms suitability for 12V automotive subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR @ IT=1mA | 10.0–11.1 V - Voltage at which device enters avalanche conduction; ensures reliable turn-on margin above VWM |
| VC @ IPPM=64.9A | 15.4 V - Clamped voltage during 10/1000μs surge; limits downstream IC stress below safe threshold |
| PPK | 1000 W - Peak pulse power handling per single 1ms transient; meets ISO 7637-2 Pulse 1 requirements |
| TJ max | +175°C - Maximum junction temperature; enables under-hood deployment without derating in compact layouts |
| RθJL | 20 °C/W - Junction-to-lead thermal resistance; supports high-power pulse dissipation via PCB copper pour |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, low-profile, matte tin-plated leads, polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current input / Surge return path | Connected to ground or low-impedance return in unidirectional clamp configuration |
| Cathode | Protected line connection / Transient sink | Connected to I/O line or power rail being protected; cathode band marks this terminal |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock per JESD22 |
| Glass-passivated junction | Enhances long-term stability and leakage immunity under humidity and thermal stress |
| ISO 7637-2 compliant | Guarantees robustness against real-world automotive transients: Pulse 1 (load dump), Pulse 2a/2b, Pulse 3a/3b |
| 1.0ps response time | Enables clamping before ESD or EFT energy couples into signal traces or IC pins |
| Moisture sensitivity level 1 | Eliminates bake requirement prior to reflow; compatible with standard SMT assembly lines |
Applications
| Automotive Lighting Control | Infotainment Power Rail Protection |
|---|---|
Use Scenario: Protecting LED driver ICs and CAN transceivers from load-dump transients in headlamp modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 12V supply and IC input, clamping surges within 15.4V. Use Value: Prevents latch-up or gate oxide damage in 3.3V/5V logic despite ±100V load-dump events. | Use Scenario: Safeguarding USB-C PD controllers and audio codecs from ESD and battery disconnect spikes. IC Role / Device Role / Timing Role: Standoff-rated TVS on 5V/12V rails upstream of LDOs, responding in <1.0ps. Use Value: Maintains system uptime during hot-plug events and meets IEC 61000-4-2 Level 4 (±15kV air) immunity. |
| Industrial Sensor Interface | Motor Drive Gate Driver Protection |
Use Scenario: Shielding RS-485 transceivers and ADC front-ends from inductive kickback in factory automation nodes. IC Role / Device Role / Timing Role: Bidirectional-capable layout (though SMB10J9.0AH is unidirectional) used on signal lines with series impedance. Use Value: Limits transient overshoot to ≤15.4V, preserving signal integrity and preventing false triggering in analog inputs. | Use Scenario: Protecting high-side N-channel MOSFET gate drivers from Miller-induced voltage spikes during PWM switching. IC Role / Device Role / Timing Role: TVS placed between gate and source, clamping dv/dt-induced overshoot on gate node. Use Value: Avoids unintended turn-on or gate oxide breakdown when VGS exceeds ±20V rating of driver ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0A | Same DO-214AA package, 9.0V VWM, but rated at 600W PPK (vs. 1000W) | Limited to lower-energy transients; not certified to ISO 7637-2 Pulse 1 | Select SMB10J9.0AH where full 1000W surge immunity and automotive qualification are required |
| SMCJ9.0A | Higher PPK (1500W), same VWM, but larger DO-214AB (SMC) package (7.11 × 6.22 mm vs. 4.57 × 3.94 mm) | Requires PCB area increase; may impact layout density in space-constrained modules | Choose SMB10J9.0AH when SMB footprint and AEC-Q101 compliance are mandatory |
Compared with SMBJ9.0A and SMCJ9.0A, SMB10J9.0AH uniquely balances 1000W surge capability, AEC-Q101 qualification, and DO-214AA footprint - enabling drop-in replacement in automotive lighting and body control modules without layout revision or derating.
Availability
SMB10J9.0AH is available at Aetrix Electronics and suitable for automotive lighting control, infotainment power rail protection, and industrial sensor interface applications requiring stable component supply across production lifecycles.
Supply support for SMB10J9.0AH 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 Company (TSC) is a vertically integrated Taiwanese semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for automotive and industrial markets.
The SMB10JxH series was developed specifically to meet AEC-Q101 and ISO 7637-2 requirements for 12V automotive subsystems - delivering high-power transient suppression in compact SMB packages without compromising reliability.
FAQ
What is the polarity configuration of SMB10J9.0AH?
SMB10J9.0AH is a unidirectional TVS diode, with cathode marked by a band on the package. It conducts only during reverse-biased overvoltage events and blocks forward current up to 3.5V at 50A. This polarity ensures precise clamping on positive transients relative to ground, making it ideal for protecting 12V supply rails and signal lines referenced to system ground.
Is SMB10J9.0AH qualified for automotive use?
Yes, SMB10J9.0AH is AEC-Q101 qualified and tested to ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b standards. Its construction - including glass-passivated junction, moisture sensitivity level 1, and –55°C to +175°C operating range - validates its suitability for under-hood and cabin-mounted automotive electronics such as lighting modules and body control units.
What is the maximum clamping voltage of SMB10J9.0AH at rated surge current?
The maximum clamping voltage (VC) of SMB10J9.0AH is 15.4 V at 64.9 A peak pulse current (10/1000 μs waveform). This value is measured per JEDEC standards and guarantees that protected circuitry remains below critical voltage thresholds during worst-case transients, preserving functionality of 3.3V and 5V ICs downstream.
Can SMB10J9.0AH be used in bidirectional configurations?
No - SMB10J9.0AH is unidirectional only. For bidirectional protection, Taiwan Semiconductor offers the SMB10J9.0CAH variant (CAH suffix), which features symmetrical breakdown in both polarities. Using SMB10J9.0AH in reverse-biased AC signal paths risks failure due to lack of forward conduction capability beyond 3.5V.
What is the thermal resistance from junction to lead for SMB10J9.0AH?
The junction-to-lead thermal resistance (RθJL) of SMB10J9.0AH is 20°C/W, measured under standard test conditions. This low value enables efficient heat transfer from the silicon die to the PCB copper through the leads, supporting reliable 1000W pulse handling when mounted on ≥1 cm² of 2-oz copper with thermal vias.
SMB10J9.0AH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- SMB10J
- 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):
- 64.9A
- Power - Peak Pulse:
- 1000W (1kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB10J9.0AH FAQ
1.How can I place an order for SMB10J9.0AH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J9.0AH 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 SMB10J9.0AH reliable?
The price and inventory of SMB10J9.0AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J9.0AH is usually 5 days.
3.What payment methods are accepted for SMB10J9.0AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J9.0AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J9.0AH?
SMB10J9.0AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J9.0AH 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 SMB10J9.0AH?
For technical support, including SMB10J9.0AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J9.0AH requirements.
6.How does Aetrix verify that SMB10J9.0AH is sourced from the original manufacturer or authorized distributors?
All SMB10J9.0AH 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 SMB10J9.0AH meets industry standards.
7.What is the process for return or replacement of SMB10J9.0AH?
All SMB10J9.0AH units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J9.0AH, 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 SMB10J9.0AH part is unused and in its original packaging.
Return procedure for SMB10J9.0AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J9.0AH Tags
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