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Taiwan Semiconductor Corporation SMBJ16AH
- Part No.:
- SMBJ16AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ16AH.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,666
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Product details
Overview
SMBJ16AH from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, rated for 600W peak pulse power, 16V working stand-off voltage (VWM), and 26.0V maximum clamping voltage (VC) at 24.2A peak impulse current - designed to protect automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the SMBJ16AH datasheet, SMBJ16AH pinout, SMBJ16AH application, or SMBJ16AH equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 55°C/W), moisture sensitivity level (MSL 1), and bidirectional compatibility notes - all critical for ESD and load-dump protection design validation.
Technical Context
The SMBJ16AH operates as a unidirectional avalanche diode with glass-passivated junction, enabling sub-1.0ps response time and <1μA blocking leakage above 10V. Its breakdown voltage range is 17.8–19.7V at 1mA test current, ensuring precise overvoltage thresholding for 12V/24V system rails.
Thermally, it features RθJC = 10°C/W and RθJA = 55°C/W, supporting sustained operation up to +150°C junction temperature. It meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements for under-hood automotive PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC rail margin for 12V systems. |
| VBR min/max | 17.8 / 19.7 V @ 1 mA - Tight breakdown tolerance ensures consistent turn-on across production lots and temperature. |
| VC @ IPP | 26.0 V @ 24.2 A - Clamping voltage during 10/1000µs surge; limits downstream IC stress below 28V absolute max ratings. |
| PPK | 600 W - Peak pulse power handling per single 10/1000µs transient; supports ISO 7637-2 Pulse 5a (load dump). |
| ID @ VWM | <1 µA - Ultra-low leakage preserves battery life in always-on automotive modules (e.g., CAN wake-up circuits). |
| TJ max | +150 °C - Enables placement near high-power components (e.g., motor drivers, DC-DC converters) without derating. |
Pinout & Package
DO-214AA (SMB) surface-mount package with matte tin-plated leads, cathode band marking polarity, and 0.090g mass. Compliant with J-STD-002 solderability and JESD201 Class 2 whisker testing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or low-impedance return path; forms clamping loop with cathode to rail. |
| Cathode | Protected line input | Connected to protected supply rail (e.g., 12V battery feed); conducts surge current to ground when VAK exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness per stress test plan. |
| Glass passivated junction | Eliminates surface contamination sensitivity and improves long-term stability under humidity and bias stress. |
| Fast response time <1.0 ps | Clamps ESD events (IEC 61000-4-2) before sensitive gate oxides experience damage. |
| Meets ISO 7637-2 Pulse 1/2a/2b/3a/3b | Protects CAN/LIN/FlexRay interfaces and microcontroller I/O against coupled transients on vehicle harnesses. |
| Moisture sensitivity level 1 | Zero floor-life limitation; can be mounted directly from tape-and-reel without baking prior to reflow. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12V battery feed line in engine control unit exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between battery input and DC-DC converter input. Use Value: Limits transient voltage to ≤26.0V during 600W surges, preventing overvoltage shutdown of 36V-rated buck controllers. | Use Scenario: 24V analog sensor signal line (e.g., pressure transducer) routed through noisy factory machinery. IC Role / Device Role / Timing Role: Low-leakage (≤1µA) standoff protector on sensor supply rail, preserving measurement accuracy. Use Value: Maintains <1µA leakage at 16V, avoiding offset errors in µA-level bridge sensor bias currents. |
| LED Lighting Driver Input Protection | RS-485 Transceiver Bus Line Protection |
Use Scenario: Constant-current LED driver input subjected to inductive switching spikes from relay coils. IC Role / Device Role / Timing Role: Primary surge clamp on HV input stage, coordinated with upstream fuse and common-mode choke. Use Value: Clamps 10/1000µs spikes to 26.0V within 1ps, preventing MOSFET gate oxide failure in primary-side switchers. | Use Scenario: RS-485 differential bus lines (A/B) in building automation systems exposed to EFT bursts. IC Role / Device Role / Timing Role: Bidirectional protection pair (using SMBJ16AH in back-to-back configuration) on data lines. Use Value: Enables bipolar clamping with matched VBR (17.8–19.7V) in both directions, maintaining ±7V common-mode margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16A | Same VWM (16V) and package, but not AEC-Q101 qualified; higher VC (27.0V vs. 26.0V) at same IPP. | Limited to commercial/industrial use; unsuitable for automotive ECUs requiring AEC-Q101 compliance. | Select SMBJ16A only if AEC-Q101 is not required and 1.0V higher clamping is acceptable. |
| SAC16 | Same VWM (16V), lower PPK (400W), higher VC (30.0V), and different package (DO-214AC/SMA). | Lower surge rating restricts use to non-load-dump scenarios; SMA footprint requires PCB redesign. | Choose SAC16 only for space-constrained designs where 400W surge immunity suffices and layout allows SMA replacement. |
Compared with SMBJ16A and SAC16, SMBJ16AH provides the lowest clamping voltage (26.0V), full AEC-Q101 qualification, and highest surge robustness (600W) in the SMB footprint - making it optimal for automotive 12V rail protection where reliability and voltage margin are critical.
Availability
SMBJ16AH is available at Aetrix Electronics and suitable for automotive ECU power protection, industrial sensor interface hardening, and LED driver input surge suppression requiring stable component supply across extended temperature and lifecycle demands.
Supply support for SMBJ16AH 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 since 1979.
The SMBJH series was developed specifically for AEC-Q101-compliant automotive transient suppression, targeting ISO 7637-2 and IEC 61000-4-5 compliance in compact SMB packages for under-hood and body-control module applications.
FAQ
What is the clamping voltage of SMBJ16AH and how is it measured?
The SMBJ16AH has a maximum clamping voltage (VC) of 26.0 V at 24.2 A peak impulse current, tested with a standardized 10/1000 µs waveform per ANSI/IEEE C62.35. This value represents the upper limit of voltage seen by downstream circuitry during worst-case surge events, ensuring protection of 28V-tolerant ICs. The SMBJ16AH maintains this performance across its full operating temperature range (-55°C to +150°C).
Is SMBJ16AH suitable for bidirectional transient protection?
SMBJ16AH is a unidirectional TVS diode, but it can be used in bidirectional configurations when paired with a second SMBJ16AH in reverse-series orientation. Unlike bipolar variants (e.g., SMBJ16CAH), SMBJ16AH does not provide symmetrical clamping in both directions by itself. For true bidirectional protection without external circuitry, select an explicitly marked CAH-suffix part instead of SMBJ16AH.
Does SMBJ16AH meet automotive qualification standards?
Yes, SMBJ16AH is AEC-Q101 qualified and meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test requirements. It also complies with JESD201 Class 2 whisker resistance, MSL Level 1 moisture sensitivity, and RoHS/halogen-free standards per IEC 61249-2-21 - confirming suitability for under-hood automotive applications where reliability under thermal and mechanical stress is mandatory.
What is the leakage current specification for SMBJ16AH at its working voltage?
The SMBJ16AH exhibits a maximum blocking leakage current (ID) of 1 µA at its 16 V working stand-off voltage (VWM), measured at TA = 25°C. This ultra-low leakage ensures minimal power loss in always-on automotive subsystems such as CAN transceivers and low-power microcontrollers, preserving battery standby life without compromising protection integrity.
How does SMBJ16AH compare to SMBJ16H in terms of breakdown voltage tolerance?
SMBJ16AH has a tighter breakdown voltage range of 17.8–19.7 V at 1 mA test current, versus SMBJ16H's broader 17.8–21.8 V range. This 2.0 V reduction in VBR spread improves design margin predictability for precision rail clamping, especially in safety-critical automotive modules where consistent turn-on behavior across temperature and lot variance is essential for SMBJ16AH deployment.
SMBJ16AH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJH
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 26V
- Current - Peak Pulse (10/1000µs):
- 24.2A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ16AH FAQ
1.How can I place an order for SMBJ16AH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ16AH 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 SMBJ16AH reliable?
The price and inventory of SMBJ16AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ16AH is usually 5 days.
3.What payment methods are accepted for SMBJ16AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ16AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ16AH?
SMBJ16AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ16AH 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 SMBJ16AH?
For technical support, including SMBJ16AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ16AH requirements.
6.How does Aetrix verify that SMBJ16AH is sourced from the original manufacturer or authorized distributors?
All SMBJ16AH 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 SMBJ16AH meets industry standards.
7.What is the process for return or replacement of SMBJ16AH?
All SMBJ16AH units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ16AH, 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 SMBJ16AH part is unused and in its original packaging.
Return procedure for SMBJ16AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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