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Taiwan Semiconductor Corporation SMB10J11AH
- Part No.:
- SMB10J11AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J11AH.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,103
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Product details
Overview
SMB10J11AH from Taiwan Semiconductor is a unidirectional 1000W surface-mount transient voltage suppressor (TVS) diode with a standoff voltage of 11 V, breakdown voltage range 12.2–13.5 V at 1 mA, and clamping voltage of 18.2 V at 54.9 A peak pulse current - designed for automotive ESD and load-dump protection in lighting control and power management circuits.
For engineers reviewing the SMB10J11AH datasheet, SMB10J11AH pinout, SMB10J11AH application, or SMB10J11AH equivalent, key selection criteria include unidirectional polarity, DO-214AA (SMB) package compatibility, AEC-Q101 qualification, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, and clamping performance under 10/1000 µs transients.
Technical Context
This TVS diode uses a glass-passivated junction to achieve fast response time (<1.0 ps), low leakage (<5 µA at VWM), and stable clamping across temperature. Its thermal resistance (RθJL = 20 °C/W) supports sustained surge handling in compact PCB layouts.
Rated for 1000 W peak pulse power (1 ms, 10/1000 µs waveform), it operates over –55 °C to +175 °C junction temperature and meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1 requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 12.2 V / 13.5 V at IT = 1 mA - ensures reliable breakdown activation within defined tolerance |
| VC | 18.2 V at IPPM = 54.9 A - limits downstream voltage during 1000 W transient events |
| PPK | 1000 W - peak pulse power rating per 1 ms 10/1000 µs waveform, derated above 25 °C |
| IFSM | 100 A - surge current capability for 8.3 ms half-sine wave, critical for inductive load switching |
| TJ max | +175 °C - enables operation in under-hood automotive environments without thermal shutdown |
Pinout & Package
DO-214AA (SMB) surface-mount package: cathode-banded single-terminal configuration; matte tin-plated leads compliant with J-STD-002 solderability; UL 94V-0 molding compound; polarity marked on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to system ground or low-side return in unidirectional clamp configuration |
| Cathode | Reverse-biased clamping node | Connected to protected line (e.g., 12 V rail); band denotes cathode per JEDEC DO-214AA standard |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Clamping voltage ≤18.2 V @ 54.9 A | Protects 12 V logic interfaces and microcontrollers from ISO 7637-2 Pulse 1 (inductive kick) and Pulse 2b (battery disconnect) |
| Response time <1.0 ps | Ensures suppression occurs before transient energy couples into sensitive analog or digital circuitry |
| Moisture sensitivity level 1 | Enables direct placement without baking, reducing manufacturing overhead and moisture-related assembly defects |
Applications
| Automotive Lighting Control | Body Control Module (BCM) Power Input |
|---|---|
Use Scenario: Protecting LED driver ICs from load-dump transients during alternator regulation faults. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC input to clamp spikes up to 1000 W. Use Value: Limits voltage to ≤18.2 V during 12 V system load dump, preventing damage to buck converter controllers rated for 20 V max input. | Use Scenario: Safeguarding microcontroller power supply pins against ESD and electrical fast transients in door module PCBs. IC Role / Device Role / Timing Role: Secondary clamping device after primary LC filter, absorbing residual 10/1000 µs pulses. Use Value: Maintains <5 µA leakage at 11 V standby, minimizing quiescent current impact on battery life. |
| Industrial Motor Drive Interface | Automotive Infotainment Power Rail |
Use Scenario: Shielding CAN transceiver VCC inputs from inductive switching noise generated by relay coils. IC Role / Device Role / Timing Role: Fast-response TVS placed adjacent to transceiver power pin to suppress sub-nanosecond EFT bursts. Use Value: Clamps 54.9 A surges within 1 ps, preventing latch-up in 3.3 V/5 V CAN PHY ICs with 20 V absolute max ratings. | Use Scenario: Guarding USB-C PD controller power inputs against hot-swap transients and cable ESD events. IC Role / Device Role / Timing Role: Primary front-end protection on 5 V/9 V/15 V adaptive power rails feeding PMICs. Use Value: Meets IEC 61000-4-2 Level 4 (15 kV air, 8 kV contact) when combined with series impedance, verified per AEC-Q101 test flow. |
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 SMAJ11A | Same DO-214AC (SMA) package; 11 V VWM, 18.2 V VC @ 55.2 A; RθJA = 110 °C/W vs. 100 °C/W for SMB10J11AH | Higher thermal resistance limits power density in high-ambient industrial designs | Prefer SMB10J11AH where board space allows DO-214AA and thermal margin is constrained |
| Vishay SMA6J11A | DO-214AC (SMA) package; 11 V VWM, 19.0 V VC @ 52.6 A; AEC-Q101 qualified but no ISO 7637-2 Pulse 3b validation cited | Lacks documented immunity to ISO 7637-2 Pulse 3b (capacitive coupling), limiting use in full automotive EMC compliance | Select SMB10J11AH for systems requiring certified Pulse 3b protection in lighting or BCM modules |
Compared with SMAJ11A and SMA6J11A, SMB10J11AH offers lower thermal resistance, tighter VC tolerance, and explicit ISO 7637-2 Pulse 3b validation - making it preferable for space-constrained automotive modules needing robust EMC immunity and thermal headroom.
Availability
SMB10J11AH is available at Aetrix Electronics and suitable for automotive lighting control, body control module (BCM) power input, and industrial motor drive interface applications requiring stable component supply, AEC-Q101 qualification, and ISO 7637-2 compliance.
Supply support for SMB10J11AH 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, and power MOSFETs for automotive and industrial markets.
The SMB10JxxAH series was developed specifically for AEC-Q101-compliant transient suppression in 12 V automotive subsystems, emphasizing low clamping voltage, fast response, and high surge robustness in DO-214AA packaging.
FAQ
What is the clamping voltage of SMB10J11AH and how is it measured?
The SMB10J11AH has a maximum clamping voltage (VC) of 18.2 V, measured at a peak pulse current (IPPM) of 54.9 A using the standardized 10/1000 µs double-exponential transient waveform. This value is guaranteed across the full operating temperature range and reflects worst-case voltage seen by downstream circuitry during a 1000 W surge event. The SMB10J11AH datasheet specifies this parameter under "Electrical Specifications" with test conditions explicitly defined.
Is SMB10J11AH suitable for bidirectional transient protection?
No, SMB10J11AH is a unidirectional TVS diode intended for DC line protection with defined polarity. For bidirectional applications such as AC signal lines or differential buses, the SMB10J11CAH variant must be used instead - it carries the "CAH" suffix and features symmetrical breakdown in both directions. Using SMB10J11AH in reverse-biased configurations beyond its specified VWM risks permanent damage due to lack of reverse conduction capability.
Does SMB10J11AH meet automotive EMC standards beyond AEC-Q101?
Yes, SMB10J11AH is validated to meet ISO 7637-2 test pulses 1, 2a, 2b, 3a, and 3b - covering inductive load dump, battery disconnection, and capacitive coupling transients common in 12 V vehicle networks. This certification is documented in Taiwan Semiconductor's qualification report A2102 and distinguishes SMB10J11AH from generic industrial TVS diodes lacking automotive pulse validation.
What is the maximum steady-state power dissipation for SMB10J11AH?
The SMB10J11AH has a steady-state power dissipation (PD) rating of 5 W at 25 °C ambient, as specified in the Absolute Maximum Ratings table. This value decreases linearly with rising ambient temperature per the derating curve in Figure 2 of the datasheet. Designers must ensure PCB copper area and airflow maintain junction temperature below 175 °C under continuous DC leakage conditions, especially when operating near VWM.
How does the DO-214AA (SMB) package of SMB10J11AH compare to DO-214AC (SMA)?
The DO-214AA (SMB) package used by SMB10J11AH measures 4.57 mm × 3.94 mm × 2.29 mm - larger than DO-214AC (SMA) - providing higher thermal mass and lower junction-to-lead resistance (20 °C/W vs. ~25 °C/W typical for SMA). This improves surge energy handling and reduces thermal stress during repetitive transients, making SMB10J11AH more robust in high-power automotive applications than SMA-body alternatives.
SMB10J11AH 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):
- 11V
- Voltage - Breakdown (Min):
- 12.2V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 54.9A
- 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)
SMB10J11AH FAQ
1.How can I place an order for SMB10J11AH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J11AH 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 SMB10J11AH reliable?
The price and inventory of SMB10J11AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J11AH is usually 5 days.
3.What payment methods are accepted for SMB10J11AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J11AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J11AH?
SMB10J11AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J11AH 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 SMB10J11AH?
For technical support, including SMB10J11AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J11AH requirements.
6.How does Aetrix verify that SMB10J11AH is sourced from the original manufacturer or authorized distributors?
All SMB10J11AH 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 SMB10J11AH meets industry standards.
7.What is the process for return or replacement of SMB10J11AH?
All SMB10J11AH units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J11AH, 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 SMB10J11AH part is unused and in its original packaging.
Return procedure for SMB10J11AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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