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Taiwan Semiconductor Corporation SMB10J30CAH
- Part No.:
- SMB10J30CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J30CAH.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,948
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Product details
Overview
SMB10J30CAH from Taiwan Semiconductor is a bidirectional 30 V standoff transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, rated for 1000 W peak pulse power, 48.4 V clamping voltage at 20.7 A, and AEC-Q101 qualified for automotive electronics protection against ISO 7637-2 pulses.
For engineers reviewing the SMB10J30CAH datasheet, SMB10J30CAH pinout, SMB10J30CAH application, or SMB10J30CAH equivalent, key selection criteria include bidirectional clamping behavior, 30 V working voltage, 48.4 V max clamping at 20.7 A, thermal resistance (RθJA = 100 °C/W), and compliance with automotive transients (Pulse 1/2a/2b/3a/3b).
Technical Context
This bidirectional TVS diode uses a glass-passivated junction and operates symmetrically across both polarities, enabling robust ESD and surge suppression without polarity dependency. Its fast response time (<1.0 ps) and low clamping ratio (VC/VWM ≈ 1.61) ensure minimal overvoltage exposure to downstream ICs during transient events.
The device is thermally characterized with RθJL = 20 °C/W and RθJA = 100 °C/W, supporting reliable operation up to TJ = 175 °C. It meets JESD201 Class 2 whisker resistance and J-STD-020 moisture sensitivity level 1, confirming suitability for high-reliability surface-mount assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 33.3 V / 36.8 V - Breakdown voltage range at 1 mA test current; defines turn-on threshold consistency |
| VC @ IPPM | 48.4 V - Clamped voltage at 20.7 A peak pulse current; determines protected circuit's maximum overvoltage stress |
| PPK | 1000 W - Peak pulse power handling per 1 ms waveform (Fig. 3); defines single-event surge survivability |
| TJ max | 175 °C - Maximum junction temperature; sets thermal derating boundary for sustained operation |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance; informs PCB copper area and airflow requirements |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, low-profile, matte tin-plated leads, polarity indicated by cathode band (not applicable for bidirectional configuration).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional transient path | No polarity marking required; terminals interchangeable; clamps positive and negative transients equally |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) waveforms |
| Glass-passivated junction | Enhances long-term stability and leakage performance under humidity and thermal stress vs. epoxy-passivated alternatives |
| Fast response time <1.0 ps | Minimizes voltage overshoot before clamping engages, critical for protecting sub-20 ns edge-rate digital interfaces |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppresses load-dump transients on 12 V battery-fed ECUs and body control modules. IC Role / Device Role / Timing Role: Bidirectional clamping element placed at power entry point upstream of DC-DC converters and microcontrollers. Use Value: Limits voltage to ≤48.4 V during 1000 W ISO 7637-2 Pulse 1 events, preventing latch-up or gate oxide damage in downstream ICs. | Use Scenario: Shields analog front-end amplifiers and ADC inputs in factory automation sensors exposed to EFT noise. IC Role / Device Role / Timing Role: Low-leakage (1 µA @ 30 V) TVS placed across differential signal lines or supply rails near connector interface. Use Value: Clamps ±2 kV ESD (IEC 61000-4-2) and 1 kV EFT (IEC 61000-4-4) without degrading signal integrity or introducing offset error. |
| LED Lighting Driver Protection | Automotive CAN Transceiver Protection |
Use Scenario: Guards constant-current LED drivers against inductive switching surges from relay or solenoid loads. IC Role / Device Role / Timing Role: Parallel-connected TVS across driver output to clamp flyback spikes before they reach MOSFET drain or controller feedback node. Use Value: Withstands repetitive 1000 W pulses while maintaining <1 µA leakage at 30 V, avoiding false dimming or thermal drift in precision current regulation. | Use Scenario: Protects high-speed CAN FD transceivers (e.g., TCAN1042, SN65HVD256) from bus-level transients in vehicle networks. IC Role / Device Role / Timing Role: Bidirectional TVS placed between CAN_H and CAN_L lines, referenced to ground via low-inductance layout. Use Value: Symmetric clamping ensures equal protection for both dominant and recessive states; 48.4 V clamping avoids violating CAN common-mode voltage limits (±40 V). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30CA | Same DO-214AA package, 30 V VWM, but rated for 600 W PPK (vs. 1000 W); higher VC = 48.9 V @ 12.3 A | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 1 in 12 V systems | Select SMB10J30CAH when 1000 W surge margin or automotive load-dump compliance is required |
| SAC30CA | DO-214AB (SMC) package, same 30 V VWM, 1500 W PPK, but larger footprint and higher RθJA = 125 °C/W | Requires more PCB area; better for high-duty-cycle surges but less space-efficient | Choose SMB10J30CAH for space-constrained automotive modules where 1000 W suffices and SMB footprint is mandated |
Compared with SMBJ30CA and SAC30CA, SMB10J30CAH uniquely balances 1000 W surge capability, SMB footprint, AEC-Q101 qualification, and ISO 7637-2 compliance-making it optimal for compact, high-reliability automotive power rail protection where thermal and board space constraints preclude SMC devices and 600 W devices lack margin.
Availability
SMB10J30CAH is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface hardening, and LED driver surge protection requiring stable component supply and full AEC-Q101 traceability.
Supply support for SMB10J30CAH 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 with global automotive and industrial certifications.
The SMB10JxxCAH series was designed specifically for AEC-Q101-compliant, high-power transient suppression in 12 V and 24 V automotive subsystems, emphasizing low clamping ratio, fast response, and robust thermal performance in compact SMB packages.
FAQ
What does the 'CAH' suffix indicate in SMB10J30CAH?
The 'CAH' suffix denotes a bidirectional configuration (C), AEC-Q101 qualification (A), and halogen-free construction (H). Unlike unidirectional variants (e.g., SMB10J30AH), SMB10J30CAH provides symmetrical clamping for both positive and negative transients without polarity-sensitive placement-critical for differential bus protection like CAN or LIN.
Is SMB10J30CAH compatible with lead-free reflow soldering processes?
Yes, SMB10J30CAH supports lead-free reflow per J-STD-020. Its matte tin-plated leads are solderable under standard IPC/JEDEC profiles, and its molding compound meets UL 94V-0 flammability rating. Moisture sensitivity level is rated Class 1, eliminating bake requirements prior to assembly.
How does SMB10J30CAH perform under repeated surge stress?
SMB10J30CAH is rated for non-repetitive 1 ms pulses per Fig. 3. For repetitive surges, derating per Fig. 2 applies: at 75 °C ambient, peak power drops to ~650 W. Its 175 °C max junction temperature and 20 °C/W junction-to-lead resistance enable sustained operation when mounted on adequate copper pour.
What is the maximum reverse leakage current for SMB10J30CAH at rated VWM?
At VWM = 30 V and TA = 25 °C, SMB10J30CAH exhibits maximum reverse leakage current of 1 µA. This low leakage preserves efficiency in always-on automotive circuits and avoids loading sensitive reference or bias networks in sensor signal chains.
Does SMB10J30CAH meet ISO 16750-2 for automotive environmental stress?
SMB10J30CAH is explicitly validated per ISO 7637-2 (Pulse 1/2a/2b/3a/3b), which is the core electrical transient standard within ISO 16750-2. While ISO 16750-2 also covers temperature, vibration, and corrosion, SMB10J30CAH's AEC-Q101 qualification covers the full stress test suite required for automotive component qualification-including those environmental elements.
SMB10J30CAH 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):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 48.4V
- Current - Peak Pulse (10/1000µs):
- 20.7A
- 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)
SMB10J30CAH FAQ
1.How can I place an order for SMB10J30CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J30CAH 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 SMB10J30CAH reliable?
The price and inventory of SMB10J30CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J30CAH is usually 5 days.
3.What payment methods are accepted for SMB10J30CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J30CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J30CAH?
SMB10J30CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J30CAH 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 SMB10J30CAH?
For technical support, including SMB10J30CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J30CAH requirements.
6.How does Aetrix verify that SMB10J30CAH is sourced from the original manufacturer or authorized distributors?
All SMB10J30CAH 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 SMB10J30CAH meets industry standards.
7.What is the process for return or replacement of SMB10J30CAH?
All SMB10J30CAH units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J30CAH, 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 SMB10J30CAH part is unused and in its original packaging.
Return procedure for SMB10J30CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J30CAH Tags
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