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Vishay General Semiconductor - Diodes Division SMBJ9.0AHE3/5B
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- Part No.:
- SMBJ9.0AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ9.0AHE3/5B.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,633
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Product details
Overview
SMBJ9.0AHE3/5B from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping fast-rising ESD and surge transients on power and signal lines. It features 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 (PPPM) with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the SMBJ9.0AHE3/5B datasheet, SMBJ9.0AHE3/5B pinout, SMBJ9.0AHE3/5B application, or SMBJ9.0AHE3/5B equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification (via HE3 suffix), 150 °C max junction temperature, low incremental surge resistance, 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: under normal conditions it presents high impedance (>1 MΩ leakage at 9.0 V), but switches to low-impedance conduction when transient voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance and long-term reliability under repetitive surge stress.
The SMBJ9.0AHE3/5B is rated for 600 W peak pulse power with 0.01% duty cycle, derated linearly above 25 °C ambient per Fig. 2, and exhibits 0.074 %/°C temperature coefficient of VBR - enabling predictable clamping behavior across automotive (-40 °C to +125 °C operating ambient) and industrial temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 9.0 V - maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping onset |
| VBR (Breakdown Voltage) | 10.0–11.1 V at 1 mA - precise voltage threshold where avalanche conduction begins; tight 10% tolerance enables accurate system-level overvoltage margining |
| VC (Clamping Voltage) | 15.4 V at 39.0 A IPPM - maximum voltage seen by protected circuit during worst-case 10/1000 μs surge; critical for ensuring downstream ICs remain within absolute maximum ratings |
| PPPM (Peak Pulse Power) | 600 W - energy-handling capability with standardized 10/1000 μs waveform; supports IEC 61000-4-5 Level 4 (4 kV) surge immunity when properly laid out |
| ID (Reverse Leakage) | 10 μA max at 9.0 V - minimal standby power loss and negligible impact on high-impedance sensor bias networks |
| TJ max | 150 °C - enables operation in under-hood automotive environments and enclosed industrial enclosures without thermal derating penalties |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 2.2 mm profile; compatible with J-STD-020 reflow profiles up to 260 °C peak |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; cathode indicated by band marking on one end; polarity-critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-voltage reference; completes conduction path during transient clamp event |
| Cathode | High-side connection point | Connected to protected line (e.g., 12 V rail or sensor output); avalanche breakdown initiates here when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics; supports PPAP documentation requirements |
| 600 W peak pulse power | Withstands IEC 61000-4-5 combination wave surges up to 4 kV without degradation when mounted on recommended 5.0 mm × 5.0 mm copper pads |
| Glass passivated junction | Ensures stable VBR over time and temperature; eliminates risk of parameter drift due to moisture ingress or metallization migration |
| MSL Level 1 rating | Zero floor life limitation; can be stored indefinitely at ≤30 °C/60% RH without baking prior to reflow soldering |
| Low profile (1.95–2.20 mm height) | Enables use in space-constrained designs such as portable medical sensors and compact motor drives without compromising creepage/clearance |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Suppressing load-dump transients on 12 V battery-fed ECUs in passenger vehicles. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed between battery input and DC-DC converter input stage. Use Value: Limits voltage to ≤15.4 V during 120 V/400 ms load dump events, preventing damage to upstream LDOs and microcontrollers. |
Use Scenario: Protecting analog outputs of pressure sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Standoff protection element on 4–20 mA current loop output line. Use Value: Clamps ESD strikes (IEC 61000-4-2 ±8 kV contact) to <16 V, preserving 16-bit DAC accuracy and avoiding ADC saturation. |
| Telecom DC Power Input Protection | Consumer USB Port Surge Suppression |
|
Use Scenario: Safeguarding PoE-powered network switches against induced lightning surges on 48 V DC input rails. IC Role / Device Role / Timing Role: Primary TVS on secondary-side DC bus after isolation transformer and rectifier. Use Value: Absorbs 600 W surge energy while holding clamped voltage below 16 V, protecting synchronous rectifier MOSFETs rated for 20 V VDS max. |
Use Scenario: Adding robustness to USB-C power delivery circuits in portable speakers and docking stations. IC Role / Device Role / Timing Role: Secondary-stage TVS on VBUS line downstream of eFuse and overvoltage protector IC. Use Value: Responds in <1 ns to fast ESD events, limiting transient overshoot to 15.4 V and preventing latch-up in USB PD controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0A-E3/5B | Commercial-grade version without AEC-Q101 qualification; identical electrical specs and SMB package | Approved for non-automotive industrial and consumer use only; not suitable for PPAP-controlled automotive BOMs | Select when cost sensitivity outweighs automotive qualification requirement and full temperature range validation is not needed |
| SAC9.0 | Lower 400 W PPPM rating; 16.5 V VC at 25 A IPPM; same VWM/VBR range but higher clamping voltage | Better suited for lower-energy transients (e.g., IEC 61000-4-2 only); insufficient for IEC 61000-4-5 Level 3+ requirements | Choose only if board layout restricts thermal pad area or system surge threat level is limited to ESD-only scenarios |
Compared with SMBJ9.0A-E3/5B, the SMBJ9.0AHE3/5B adds AEC-Q101 qualification for automotive deployment, while SAC9.0 trades peak power and clamping performance for smaller footprint - making SMBJ9.0AHE3/5B the optimal choice for high-reliability 12 V rail protection where both surge immunity and qualification compliance are mandatory.
Availability
SMBJ9.0AHE3/5B is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor modules, telecom power supplies, and consumer USB-C PD systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ9.0AHE3/5B 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, precision, and high-power handling.
The SMBJ series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for robust transient suppression in harsh environments - including automotive, industrial automation, and telecommunications infrastructure.
FAQ
What is the maximum clamping voltage of SMBJ9.0AHE3/5B at its rated peak pulse current?
The SMBJ9.0AHE3/5B has a maximum clamping voltage (VC) of 15.4 V at 39.0 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured under standard test conditions per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The SMBJ9.0AHE3/5B maintains this clamping performance across its full operating temperature range from -55 °C to +150 °C.
Is SMBJ9.0AHE3/5B suitable for automotive applications?
Yes, SMBJ9.0AHE3/5B is AEC-Q101 qualified, as confirmed by the "HE3" suffix in its part number and documented in Vishay's official datasheet revision 09-Jan-2024. It meets the stress testing requirements for automotive-grade discrete semiconductors, including temperature cycling, humidity bias, and mechanical shock. The SMBJ9.0AHE3/5B is routinely deployed in engine control units, body control modules, and ADAS power domains where reliability under extended temperature and vibration is mandatory.
What does the "5B" in SMBJ9.0AHE3/5B indicate?
The "5B" suffix in SMBJ9.0AHE3/5B specifies the packaging configuration: 13-inch diameter plastic tape and reel, with a base quantity of 3200 units per reel. This format is optimized for high-volume SMT assembly lines using standard 13" feeder systems. The "HE3" portion denotes RoHS-compliant construction with AEC-Q101 qualification, while "5B" is purely a logistics code - unrelated to electrical or thermal performance.
How does SMBJ9.0AHE3/5B differ from bidirectional variants like SMBJ9.0CA?
The SMBJ9.0AHE3/5B is unidirectional and features polarity-sensitive mounting (cathode band marked), whereas SMBJ9.0CA is bidirectional with no polarity marking and symmetrical clamping in both directions. Electrically, SMBJ9.0AHE3/5B has a forward voltage drop (~3.5 V at 50 A) and blocks only in reverse bias, while SMBJ9.0CA clamps equally on positive and negative transients. Use SMBJ9.0AHE3/5B for DC power rails; choose SMBJ9.0CA only for AC-coupled or floating signal lines.
What is the thermal resistance from junction to ambient for SMBJ9.0AHE3/5B?
The SMBJ9.0AHE3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the minimum recommended pad layout (0.2" × 0.2" copper pads per terminal). This value assumes no additional heatsinking and defines the steady-state temperature rise under continuous 5.0 W power dissipation. For pulsed operation, transient thermal impedance curves (Fig. 5 in datasheet) govern short-duration surge heating, where RθJA is not applicable.
SMBJ9.0AHE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 9V
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 15.4V
- Current - Peak Pulse (10/1000µs):
- 39A
- 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)
SMBJ9.0AHE3/5B FAQ
1.How can I place an order for SMBJ9.0AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ9.0AHE3/5B 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 SMBJ9.0AHE3/5B reliable?
The price and inventory of SMBJ9.0AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ9.0AHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ9.0AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ9.0AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ9.0AHE3/5B?
SMBJ9.0AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ9.0AHE3/5B 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 SMBJ9.0AHE3/5B?
For technical support, including SMBJ9.0AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ9.0AHE3/5B requirements.
6.How does Aetrix verify that SMBJ9.0AHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ9.0AHE3/5B 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 SMBJ9.0AHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ9.0AHE3/5B?
All SMBJ9.0AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ9.0AHE3/5B, 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 SMBJ9.0AHE3/5B part is unused and in its original packaging.
Return procedure for SMBJ9.0AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ9.0AHE3/5B Tags
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