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Taiwan Semiconductor Corporation SMB10J11CAH
- Part No.:
- SMB10J11CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J11CAH.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,471
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Product details
Overview
SMB10J11CAH from Taiwan Semiconductor is a bidirectional 1000W transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, with 11V stand-off voltage (VWM), 12.2–13.5V breakdown voltage (VBR @ 1mA), and 18.2V clamping voltage (VC @ 54.9A). It delivers AEC-Q101 qualification and ISO 7637-2 compliance for automotive load-dump and ESD protection in power supply rails and signal lines.
For engineers reviewing the SMB10J11CAH datasheet, SMB10J11CAH pinout, SMB10J11CAH application, or SMB10J11CAH equivalent, key selection criteria include bidirectional clamping capability, 1000W peak pulse power rating, 1.0ps typical response time, TJ = –55°C to +175°C operating range, and DO-214AA mechanical compatibility with automated SMT assembly.
Technical Context
This bidirectional TVS diode uses a glass-passivated junction to achieve fast transient suppression (<1.0ps response) and stable clamping under repetitive surge events. Its symmetrical I-V characteristic enables equal protection against positive and negative transients without polarity dependency.
Designed for automotive-grade reliability, SMB10J11CAH meets AEC-Q101 stress tests and ISO 7637-2 Pulse 1/2a/2b/3a/3b waveforms. Thermal performance includes RθJL = 20°C/W and RθJA = 100°C/W, supporting operation up to 175°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum continuous reverse working voltage before clamping initiates |
| VBR min/max | 12.2 V / 13.5 V @ 1 mA - Confirmed breakdown threshold range for reliable turn-on margin |
| VC @ IPPM | 18.2 V @ 54.9 A - Clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPK | 1000 W - Peak pulse power handling per single non-repetitive 1 ms event |
| TJ max | +175 °C - Enables use in under-hood automotive environments without derating |
| Response time | <1.0 ps - Ensures suppression before sensitive ICs experience overvoltage damage |
Pinout & Package
DO-214AA (SMB) surface-mount package: low-profile, matte tin-plated leads, UL 94V-0 molding compound, polarity indicated by cathode band (bidirectional symmetry means band denotes terminal orientation only).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional transient conduction path | Either terminal serves as input/output; no polarity constraint simplifies PCB layout |
| Case (exposed metal pad) | Thermal conduction path | Not electrically connected; provides thermal relief to PCB copper pour |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements (HTOL, TC, HAST, etc.) |
| ISO 7637-2 compliant | Withstands defined automotive transient pulses including load dump (Pulse 5) and coupling noise (Pulses 1, 2a, 2b, 3a, 3b) |
| Glass passivated junction | Enhances long-term stability and leakage control under high-humidity or thermal cycling conditions |
| Moisture sensitivity level 1 | Zero bake requirement prior to reflow; compatible with standard J-STD-020 assembly processes |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12V battery-fed ECUs from load-dump transients and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional clamping device placed at board-level input filter stage. Use Value: Limits rail voltage to ≤18.2V during 1000W surges, preventing damage to downstream DC-DC controllers and microcontrollers. | Use Scenario: Safeguarding analog sensor inputs (e.g., pressure, temperature) in harsh factory environments. IC Role / Device Role / Timing Role: Low-leakage (≤5 µA @ 11V) shunt protector on signal line before ADC front-end. Use Value: Maintains signal integrity during EFT bursts while adding <0.1% error due to sub-µA leakage at nominal bias. |
| LED Lighting Driver Protection | Automotive CAN Transceiver Protection |
Use Scenario: Shielding constant-current LED drivers from inductive kickback during MOSFET switching. IC Role / Device Role / Timing Role: Parallel-connected TVS across driver output terminals. Use Value: Absorbs 54.9A peak current within 18.2V clamp, eliminating need for snubber RC networks. | Use Scenario: Guarding CANH/CANL pins of transceivers against ESD and coupled transients in vehicle wiring harnesses. IC Role / Device Role / Timing Role: Bidirectional TVS placed between differential pair and ground. Use Value: Provides symmetric clamping without distorting differential signaling; maintains CAN FD timing margins due to sub-picosecond response. |
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 SMAJ11CA | Same DO-214AC (SMA) package; 11V VWM, 18.2V VC @ 54.9A, but rated at 400W PPK | Lower power handling limits use to sub-400W surge environments; not AEC-Q101 qualified | Select when cost sensitivity outweighs automotive qualification and 1000W headroom |
| Vishay SMF11CA | DO-219AB (SMF) package; identical 11V VWM and 18.2V VC, but 200W PPK and no AEC-Q101 or ISO 7637-2 validation | Suitable only for consumer-grade or non-safety-critical industrial applications | Choose for space-constrained layouts where SMB footprint is unavailable and surge energy is low |
Compared with SMAJ11CA and SMF11CA, SMB10J11CAH delivers triple the peak power rating (1000W vs. 400W/200W), full AEC-Q101 and ISO 7637-2 certification, and DO-214AA mechanical robustness-making it the sole option for Tier-1 automotive power rail protection requiring sustained surge immunity.
Availability
SMB10J11CAH is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface hardening, and LED driver transient suppression requiring stable component supply across multi-year production cycles.
Supply support for SMB10J11CAH 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 devices since 1979.
The SMB10JxxCAH series was developed specifically for AEC-Q101-compliant automotive transient suppression, targeting 12V/24V systems requiring high-energy clamping in compact SMB footprints.
FAQ
What does the 'CAH' suffix indicate in SMB10J11CAH?
The 'CAH' suffix denotes a bidirectional configuration (C), AEC-Q101 qualification (A), and halogen-free construction (H). Unlike unidirectional variants ending in 'AH', SMB10J11CAH provides symmetrical clamping for both polarities-critical for protecting differential buses like CAN or AC-coupled signal paths. This designation is confirmed in TSC's ordering information and electrical specifications table.
Is SMB10J11CAH suitable for 24V automotive systems?
Yes, SMB10J11CAH is explicitly validated for 12V and 24V automotive applications. Its 11V stand-off voltage allows safe operation on 12V nominal rails, while its 1000W peak pulse rating and ISO 7637-2 compliance ensure robustness against load-dump transients common in 24V commercial vehicle systems. The 175°C maximum junction temperature further supports under-hood deployment.
How does SMB10J11CAH compare to unidirectional SMB10J11AH?
SMB10J11CAH and SMB10J11AH share identical VWM (11V), VBR (12.2–13.5V), and VC (18.2V) specs, but differ in polarity: SMB10J11CAH is bidirectional (no cathode marking function), while SMB10J11AH is unidirectional (cathode band defines polarity). Both are AEC-Q101 qualified and packaged in DO-214AA, but only the CAH version supports symmetric transient suppression.
What is the maximum allowable PCB trace length when placing SMB10J11CAH near protected circuitry?
To preserve sub-1.0ps response effectiveness, PCB trace inductance must be minimized. For SMB10J11CAH, keep total trace length from TVS terminals to protected node under 5 mm with ≥0.5 mm width and direct ground plane coupling. Longer traces increase impedance, delaying clamping onset and permitting voltage overshoot beyond the specified 18.2V VC-verified via TSC's application note AN-102 on layout best practices.
Does SMB10J11CAH require derating at elevated ambient temperatures?
Yes, SMB10J11CAH must be derated above TA = 25°C per Figure 2 in the datasheet. At 85°C ambient, its 1000W peak pulse power drops to ~650W; at 125°C, it falls to ~400W. Derating follows the published curve using RθJA = 100°C/W. Steady-state power dissipation remains limited to 5W regardless of temperature.
SMB10J11CAH 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:
- -
- Bidirectional Channels:
- 1
- 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)
SMB10J11CAH FAQ
1.How can I place an order for SMB10J11CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J11CAH 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 SMB10J11CAH reliable?
The price and inventory of SMB10J11CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J11CAH is usually 5 days.
3.What payment methods are accepted for SMB10J11CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J11CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J11CAH?
SMB10J11CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J11CAH 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 SMB10J11CAH?
For technical support, including SMB10J11CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J11CAH requirements.
6.How does Aetrix verify that SMB10J11CAH is sourced from the original manufacturer or authorized distributors?
All SMB10J11CAH 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 SMB10J11CAH meets industry standards.
7.What is the process for return or replacement of SMB10J11CAH?
All SMB10J11CAH units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J11CAH, 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 SMB10J11CAH part is unused and in its original packaging.
Return procedure for SMB10J11CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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