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Vishay General Semiconductor - Diodes Division SMBJ9.0HE3/5B
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- Part No.:
- SMBJ9.0HE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ9.0HE3/5B.pdf
- Description:
- TVS DIODE 9VWM 16.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,958
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Product details
Overview
SMBJ9.0HE3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 9.0 V stand-off voltage (VWM), 10.0–11.1 V breakdown voltage (VBR) at 1 mA, 15.4 V maximum clamping voltage (VC) at 39.0 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 µs waveform). It is AEC-Q101 qualified and used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial power supplies.
For engineers reviewing the SMBJ9.0HE3/5B datasheet, SMBJ9.0HE3/5B pinout, SMBJ9.0HE3/5B application, or SMBJ9.0HE3/5B equivalent, key selection criteria include unidirectional polarity, 15.4 V clamping performance at 39 A, AEC-Q101 qualification status, RoHS-compliant matte tin plating, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a voltage-clamping protection device in series with sensitive downstream circuitry, conducting only when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable leakage (<10 µA at VWM) and fast response time (<1.0 ps), enabling suppression of ESD, inductive switching spikes, and lightning-induced surges before damage occurs.
The SMBJ9.0HE3/5B is rated for 100 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine), has a thermal resistance of 100 °C/W (junction-to-ambient), and supports continuous operation from –55 °C to +150 °C. Its MSL Level 1 rating (peak reflow 260 °C) confirms suitability for standard lead-free SMT processes without preconditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum DC or continuous reverse operating voltage before clamping initiates; defines safe operating margin below breakdown. |
| VBR (min/max) | 10.0 V / 11.1 V at IT = 1 mA - Confirmed breakdown range under standardized test current; ensures predictable turn-on across production lot. |
| VC @ IPPM | 15.4 V at 39.0 A (10/1000 µs) - Clamped voltage seen by protected circuit during worst-case transient; determines residual stress on downstream components. |
| PPPM | 600 W - Peak transient energy absorption capability; enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω). |
| ID @ VWM | ≤10 µA - Reverse leakage current at rated stand-off voltage; low value minimizes standby power loss and avoids false triggering. |
| TJ max. | +150 °C - Maximum junction temperature; supports high-ambient deployments in engine control units and industrial motor drives. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height; compatible with IPC-7351B land patterns. |
Pinout & Package
Package: SMB (DO-214AA), unidirectional configuration with cathode indicated by a band on the case. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102, rated for MSL Level 1 reflow (260 °C peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | High-side connection point for reverse-biased clamping | Connected to protected line (e.g., 12 V rail); conducts surge current to ground when overvoltage occurs. |
| Anode | Low-side reference terminal | Typically tied to system ground or common return path; completes clamping loop during transient events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including powertrain and body electronics; supports PPAP documentation and long-term reliability requirements. |
| 600 W peak pulse power (10/1000 µs) | Withstands high-energy transients such as load dump (ISO 7637-2 Pulse 5a) without degradation or failure. |
| Glass passivated chip junction | Ensures stable VBR tolerance and low leakage over temperature and lifetime; eliminates risk of junction corrosion in humid environments. |
| MSL Level 1 moisture sensitivity | Eliminates need for dry-packaging or baking prior to reflow; reduces manufacturing overhead and avoids moisture-induced popcorning. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD >15 kV), improving protection margin for sub-20 V logic interfaces. |
Applications
| Automotive Power Supply Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional clamping device placed between input rail and ground, triggered within picoseconds of overvoltage onset. Use Value: Limits peak voltage to ≤15.4 V during 39 A surges, preventing latch-up or gate oxide damage in downstream PMICs and microcontrollers. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: Low-capacitance (typ. <100 pF) shunt protector on 0–5 V or 4–20 mA signal paths exposed to relay coil switching noise. Use Value: Maintains signal integrity by clamping induced spikes to <15.4 V while adding <10 µA leakage-no calibration drift or offset error introduced. |
| Consumer Device USB Port Protection | Telecom Power Interface Surge Suppression |
|
Use Scenario: Safeguarding USB VBUS lines in portable chargers and docking stations against hot-plug and ESD events. IC Role / Device Role / Timing Role: Standoff-rated TVS placed upstream of USB power switch ICs to absorb ±15 kV contact ESD per IEC 61000-4-2. Use Value: Clamps ESD pulses to <15.4 V within <1 ns, preventing damage to USB PD controllers and maintaining BC1.2 charging compliance. |
Use Scenario: Front-end protection of 48 V PoE injectors and splitters in enterprise network switches. IC Role / Device Role / Timing Role: Primary surge limiter on DC input side, coordinated with secondary MOVs and gas discharge tubes for staged energy handling. Use Value: Absorbs first 600 W of surge energy (IEC 61000-4-5) while holding clamping voltage below 15.4 V-preserving isolation barrier integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0A-E3/5B | Commercial-grade (non-AEC-Q101), same VWM/VBR/VC specs, identical SMB package and pinout. | Lacks automotive qualification; suitable for consumer/industrial designs where AEC-Q101 is not mandated. | Select when cost sensitivity outweighs automotive reliability requirements and no PPAP submission is needed. |
| SMCJ9.0AHE3/5B | Same electrical specs but in larger SMC (DO-214AB) package; higher thermal mass (RθJA = 50 °C/W vs. 100 °C/W). | Better suited for high-duty-cycle or high-ambient environments (>85 °C) where SMBJ9.0HE3/5B may thermally saturate. | Choose when board space allows and sustained surge repetition or elevated ambient temperatures demand lower thermal resistance. |
Compared with SMBJ9.0A-E3/5B, the SMBJ9.0HE3/5B adds AEC-Q101 qualification for automotive use without electrical trade-offs; compared with SMCJ9.0AHE3/5B, it offers identical protection performance in a 30% smaller footprint but with reduced thermal headroom for repetitive surges.
Availability
SMBJ9.0HE3/5B is available at Aetrix Electronics and suitable for automotive power modules, industrial sensor interfaces, consumer USB power delivery systems, and telecom PoE infrastructure requiring stable component supply and AEC-Q101 compliance.
Supply support for SMBJ9.0HE3/5B 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, precision, and automotive-grade validation.
The SMBJ series is engineered for robust transient suppression in harsh environments-targeting automotive, industrial, and telecom applications where consistent clamping performance and long-term stability under thermal cycling are critical.
FAQ
What is the clamping voltage of SMBJ9.0HE3/5B at its rated peak pulse current?
The SMBJ9.0HE3/5B has a maximum clamping voltage (VC) of 15.4 V when subjected to its rated peak pulse current of 39.0 A using the standard 10/1000 µs waveform. This value is measured under defined test conditions (TA = 25 °C, mounted on 0.2" × 0.2" copper pads) and represents the upper voltage limit imposed on protected circuitry during surge events. The SMBJ9.0HE3/5B maintains this clamping performance consistently across its qualified operating temperature range.
Is SMBJ9.0HE3/5B suitable for automotive applications?
Yes, SMBJ9.0HE3/5B is AEC-Q101 qualified, making it suitable for automotive applications including engine control units, body electronics, infotainment power supplies, and ADAS sensor interfaces. Its qualification covers stress testing for temperature cycling, humidity bias, mechanical shock, and high-temperature operating life. The SMBJ9.0HE3/5B meets the reliability and traceability requirements for automotive production, unlike commercial variants such as SMBJ9.0A-E3/5B.
What does the "HE3" suffix indicate in SMBJ9.0HE3/5B?
The "HE3" suffix in SMBJ9.0HE3/5B denotes a RoHS-compliant, AEC-Q101 qualified version with matte tin-plated leads. "H" indicates AEC-Q101 qualification, "E3" specifies RoHS compliance and commercial-grade temperature rating (–55 °C to +150 °C), and the "/5B" denotes packaging in 13-inch tape-and-reel format with 3200 units per reel. This distinguishes it from non-automotive "E3" or halogen-free "HM3" variants.
How does SMBJ9.0HE3/5B compare to bidirectional TVS diodes like SMBJ9.0CA?
The SMBJ9.0HE3/5B is unidirectional and intended for DC line protection where polarity is fixed (e.g., 12 V supply rails), offering lower leakage and tighter VBR tolerance than bidirectional equivalents. In contrast, SMBJ9.0CA provides symmetrical clamping for AC or floating signal lines but exhibits higher ID at VWM and broader VBR spread. For SMBJ9.0HE3/5B applications requiring polarity-aware protection, substituting SMBJ9.0CA would require circuit redesign to accommodate bidirectional behavior and verify leakage impact.
What PCB layout considerations apply to SMBJ9.0HE3/5B for optimal surge performance?
For optimal surge performance, SMBJ9.0HE3/5B must be mounted on minimum recommended pad layout: 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, with short, wide traces to minimize inductance between the TVS and protected node. Thermal vias under pads improve heat dissipation during repetitive surges. Avoid routing sensitive traces near the anode/cathode paths, and ensure ground plane continuity beneath the device. These practices preserve the SMBJ9.0HE3/5B's specified 15.4 V clamping voltage and prevent impedance-related overshoot.
SMBJ9.0HE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 9V
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 16.9V
- Current - Peak Pulse (10/1000µs):
- 35.5A
- 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 (SMBJ)
SMBJ9.0HE3/5B FAQ
1.How can I place an order for SMBJ9.0HE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ9.0HE3/5B 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 SMBJ9.0HE3/5B reliable?
The price and inventory of SMBJ9.0HE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ9.0HE3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ9.0HE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ9.0HE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ9.0HE3/5B?
SMBJ9.0HE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ9.0HE3/5B 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 SMBJ9.0HE3/5B?
For technical support, including SMBJ9.0HE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ9.0HE3/5B requirements.
6.How does Aetrix verify that SMBJ9.0HE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ9.0HE3/5B 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 SMBJ9.0HE3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ9.0HE3/5B?
All SMBJ9.0HE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ9.0HE3/5B, 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 SMBJ9.0HE3/5B part is unused and in its original packaging.
Return procedure for SMBJ9.0HE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ9.0HE3/5B Tags
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