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Taiwan Semiconductor Corporation SMBJ16H
- Part No.:
- SMBJ16H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ16H.pdf
- Description:
- 600W, 19.8V, 10%, UNIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:7,729
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Product details
Overview
SMBJ16H from Taiwan Semiconductor is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, with 16V working stand-off voltage (VWM), 17.8–21.8V breakdown voltage (VBR), and 28.8V maximum clamping voltage (VC) at 21.8A peak pulse current - designed for automotive-grade ESD and load-dump protection in power supply rails and I/O interfaces.
For engineers reviewing the SMBJ16H datasheet, SMBJ16H pinout, SMBJ16H application, or SMBJ16H equivalent, key selection criteria include clamping performance under ISO 7637-2 Pulse 1/2a/2b/3a/3b, AEC-Q101 qualification status, junction temperature range (−55°C to +150°C), and unidirectional polarity marking for correct PCB orientation during automated placement.
Technical Context
The SMBJ16H operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its VBR (17.8–21.8V @ 1mA), clamping transients to ≤28.8V at 21.8A (10/1000µs waveform). Its glass-passivated junction ensures stable leakage (<1µA @ 16V) and fast response (<1.0ps).
Thermally, it features RθJC = 10°C/W and RθJA = 55°C/W, enabling reliable operation up to TJ = 150°C. It meets JESD201 Class 2 whisker resistance and moisture sensitivity level 1 per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 17.8 V / 21.8 V @ 1 mA - Ensures predictable turn-on across manufacturing lot and temperature |
| VC @ IPP | 28.8 V @ 21.8 A (10/1000 µs) - Limits downstream IC voltage stress during automotive load dump |
| PPK | 600 W - Peak pulse power handling capability compliant with ISO 7637-2 test pulses |
| ID @ VWM | <1 µA - Negligible leakage current preserves low-power system standby integrity |
| TJ max | +150 °C - Supports under-hood automotive environments without derating |
| Package | DO-214AA (SMB) - Standardized surface-mount footprint compatible with IPC-7351B land patterns |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, cathode band marking polarity for unidirectional operation; weight ≈ 0.090 g; UL 94V-0 rated compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., GND or return path) in unidirectional configuration |
| Cathode | Reverse-biased clamping terminal | Marked by band; connected to protected line (e.g., 12V rail or CAN bus) to shunt transients to ground |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics use including engine control units and body modules |
| Glass passivated junction | Enhances long-term reliability and stability of VBR and leakage under thermal cycling |
| Clamping ratio VC/VBR | ≤1.62 (28.8V / 17.8V) - Tight ratio minimizes overvoltage margin required in protected circuit design |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnect), and Pulse 3a/3b (capacitive coupling) waveforms |
| Moisture sensitivity level 1 | Enables standard SMT reflow without baking preconditioning, reducing manufacturing overhead |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12V battery-fed ECUs against load dump transients up to ±100V per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between power input and local DC/DC regulator input. Use Value: Limits voltage seen by downstream LDOs and microcontrollers to ≤28.8V, preventing latch-up or gate oxide damage. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to PLC analog inputs exposed to field wiring noise. IC Role / Device Role / Timing Role: Low-leakage (≤1 µA) transient suppressor on signal line, referenced to system ground. Use Value: Maintains signal integrity during EFT bursts while adding <0.1 pF parasitic capacitance at 1 MHz (per Fig.5). |
| Automotive Lighting Module Protection | Automotive CAN Bus Line Protection |
Use Scenario: Shielding LED driver ICs in headlamp modules from inductive kickback during PWM dimming and relay switching. IC Role / Device Role / Timing Role: Fast-response (<1 ps) unidirectional TVS placed across driver output and ground. Use Value: Clamps spikes within nanoseconds, preserving MOSFET gate integrity and avoiding false fault detection. | Use Scenario: Adding robustness to CAN-H/CAN-L lines in gateway modules subjected to ESD events per ISO 10605 (±8 kV contact). IC Role / Device Role / Timing Role: Secondary-level protection paired with primary common-mode choke and ESD diodes. Use Value: Absorbs high-energy differential transients (e.g., ISO 7637-2 Pulse 2a) without compromising CAN signal rise/fall times. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16A | Narrower VBR range (17.8–19.7 V); lower clamping voltage (26.0 V @ 24.2 A) | Better suited for tighter voltage margin designs where lower VC is critical | Select SMBJ16A if clamping voltage budget is constrained below 27 V; verify IPP margin remains sufficient. |
| SMCJ16H | Same VWM/VBR specs but in larger DO-214AB (SMC) package; higher PPK (1500 W) | Used where higher surge energy absorption is required (e.g., alternator output lines) | Choose SMCJ16H only if board space allows larger footprint and 1500 W rating is needed; SMBJ16H fits tighter layouts. |
Compared with SMBJ16A and SMCJ16H, the SMBJ16H offers balanced clamping performance (28.8 V), compact DO-214AA packaging, and AEC-Q101 validation - making it optimal for space-constrained automotive modules requiring 600 W surge immunity without over-engineering.
Availability
SMBJ16H is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and lighting module transient suppression requiring stable component supply across production lifecycles.
Supply support for SMBJ16H 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 distribution and AEC-Q101 qualification capabilities.
The SMBJH series was developed specifically for automotive and industrial transient suppression, emphasizing AEC-Q101 reliability, ISO 7637-2 compliance, and surface-mount manufacturability in DO-214AA packages.
FAQ
What is the maximum clamping voltage of SMBJ16H under standard test conditions?
The SMBJ16H has a maximum clamping voltage (VC) of 28.8 V when subjected to a 10/1000 µs surge current pulse of 21.8 A at TA = 25°C. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuits during transient events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is SMBJ16H qualified for automotive applications?
Yes, SMBJ16H is AEC-Q101 qualified and meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements. Its construction - including glass-passivated junction, JESD201 Class 2 whisker resistance, and moisture sensitivity level 1 - supports deployment in engine control units, body electronics, and lighting systems per automotive OEM specifications.
What is the polarity configuration of SMBJ16H?
SMBJ16H is a unidirectional TVS diode, with cathode marked by a band on the DO-214AA (SMB) package. It conducts in forward bias like a standard diode and clamps in reverse bias above VBR. The marking aligns with industry-standard orientation for placement on positive supply rails referenced to ground.
How does SMBJ16H compare to SMBJ16AH in terms of breakdown voltage?
SMBJ16H specifies a VBR range of 17.8–21.8 V, while SMBJ16AH narrows that to 17.8–19.7 V. This tighter tolerance reduces clamping variation across production lots, supporting designs where predictable turn-on behavior is essential - though both share identical VWM (16 V), ID (<1 µA), and package (DO-214AA).
What is the thermal resistance profile of SMBJ16H?
SMBJ16H has a junction-to-case thermal resistance (RθJC) of 10°C/W and junction-to-ambient resistance (RθJA) of 55°C/W. These values enable effective heat dissipation during repetitive surges and support operation up to TJ = 150°C - verified under JEDEC JESD51-14 and used to calculate safe power derating above 25°C ambient.
SMBJ16H 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:
- 28.8V
- Current - Peak Pulse (10/1000µs):
- 21.8A
- 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)
SMBJ16H FAQ
1.How can I place an order for SMBJ16H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ16H 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 SMBJ16H reliable?
The price and inventory of SMBJ16H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ16H is usually 5 days.
3.What payment methods are accepted for SMBJ16H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ16H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ16H?
SMBJ16H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ16H 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 SMBJ16H?
For technical support, including SMBJ16H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ16H requirements.
6.How does Aetrix verify that SMBJ16H is sourced from the original manufacturer or authorized distributors?
All SMBJ16H 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 SMBJ16H meets industry standards.
7.What is the process for return or replacement of SMBJ16H?
All SMBJ16H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ16H, 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 SMBJ16H part is unused and in its original packaging.
Return procedure for SMBJ16H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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