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Vishay General Semiconductor - Diodes Division SMB10J30AHE3_B/I
- Part No.:
- SMB10J30AHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J30AHE3_B/I.pdf
- Description:
- 1KW,30V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,492
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Product details
Overview
SMB10J30AHE3_B/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on DC power rails and signal lines. It features a 30 V stand-off voltage (VWM), 33.3–36.8 V breakdown voltage (VBR) at 1 mA, 48.4 V clamping voltage (VC) at 20.7 A peak pulse current (IPPM), and 1000 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive ECUs, industrial sensor interfaces, and power supply input stages.
For engineers reviewing the SMB10J30AHE3_B/I datasheet, SMB10J30AHE3_B/I pinout, SMB10J30AHE3_B/I application, or SMB10J30AHE3_B/I equivalent, key selection criteria include AEC-Q101 qualification, unidirectional polarity with cathode band marking, low incremental surge resistance, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads per terminal.
Technical Context
This TVS diode operates as a clamping device that transitions from high-impedance standby to low-impedance conduction when reverse voltage exceeds VBR, limiting transient overvoltage to ≤48.4 V at 20.7 A. Its glass-passivated junction ensures stable leakage (<1.0 µA at 30 V) and fast response time (<1 ns), critical for protecting MOSFET gates and microcontroller I/O pins against ESD and inductive switching spikes.
Thermal performance is defined by RθJA = 72 °C/W and RθJL = 20 °C/W, enabling reliable operation up to TJ = +150 °C. The device meets MSL Level 1 per J-STD-020 and supports peak forward surge current of 100 A (8.3 ms half-sine), making it suitable for harsh environments where thermal derating above 25 °C must be applied per Figure 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 24 V systems. |
| VBR (min/max) | 33.3 V / 36.8 V at IT = 1 mA - tight breakdown tolerance ensures predictable turn-on across temperature and unit variation. |
| VC @ IPPM | 48.4 V at 20.7 A (10/1000 µs) - clamping voltage directly limits stress on downstream ICs during surge events. |
| PPPM | 1000 W - peak pulse power handling capacity determines survivability against ISO 7637-2 Pulse 1/2/5a transients. |
| ID @ VWM | ≤1.0 µA - ultra-low leakage preserves battery life and avoids false triggering in high-impedance sensor circuits. |
| TJ max. | +150 °C - enables use in under-hood automotive applications without thermal shutdown risk. |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by color band; polarity critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or lower-potential rail; forms return path during clamping conduction. |
| Cathode | Protected line input | Connected to the line being protected (e.g., 24 V supply or CAN_H); conducts surge current to anode when V > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics including engine control, body modules, and ADAS sensors requiring long-term reliability under thermal and mechanical stress. |
| Glass passivated junction | Ensures consistent VBR stability, low leakage drift over time, and immunity to humidity-induced parameter shift in industrial enclosures. |
| MSL Level 1 rating | Allows unlimited floor life and reflow at peak 260 °C without preconditioning - simplifies manufacturing for high-volume SMT lines. |
| 1000 W peak pulse power | Supports robust protection against ISO 16750-2 load dump surges and IEC 61000-4-5 combination wave transients up to 4 kV. |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage overshoot during fast transients, reducing risk of latch-up or gate oxide damage in protected MOSFETs and MCUs. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: 24 V battery-fed ECU power input subjected to ISO 7637-2 Pulse 1 (−150 V, 2 Ω, 50 ms) and Pulse 5a (load dump up to +60 V). IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between VIN and GND, absorbing energy before it reaches DC/DC converter input stage. Use Value: Limits voltage to ≤48.4 V during 20.7 A surge, preventing overvoltage failure of upstream regulators and ensuring system reset integrity. |
Use Scenario: Analog output line (4–20 mA) from pressure sensor exposed to field wiring induced transients in factory automation cabinets. IC Role / Device Role / Timing Role: Low-leakage (≤1.0 µA) TVS mounted at connector entry point, shunting fast ESD (IEC 61000-4-2 ±8 kV) away from op-amp input. Use Value: Maintains signal accuracy with sub-µA leakage while clamping transients within 1 ns, avoiding ADC offset errors or sensor calibration drift. |
| Motor Drive Gate Protection | Telecom DC Power Input |
|
Use Scenario: High-side N-channel MOSFET gate driver circuit in BLDC inverter, vulnerable to Miller-induced voltage spikes during switching. IC Role / Device Role / Timing Role: TVS placed between gate and source to clamp dv/dt-induced overshoot exceeding VGS(max) rating. Use Value: Clamps gate-source voltage to ≤48.4 V with <1 ns response, preventing gate oxide rupture and ensuring FET longevity at 20 kHz PWM. |
Use Scenario: -48 V telecom rectifier output feeding base station backplane, subject to lightning-induced surges per IEC 61643-21 Class II. IC Role / Device Role / Timing Role: Unidirectional TVS installed at PSE input, rated for 30 V standoff to accommodate nominal -48 V with margin. Use Value: Absorbs 1000 W pulses without degradation, maintaining system uptime and eliminating need for redundant protection stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30AHE3_A/H | Same VWM (30 V), VBR (33.3–36.8 V), VC (48.4 V), and PPPM (1000 W); differs only in tape-and-reel packaging (7" reel vs. 13") and revision code (A/H vs. B/I). | No functional difference; identical electrical and thermal specs; suitable for same PCB layout and qualification records. | Select based on preferred reel size and inventory alignment; no design change required. |
| SMCJ30AHE3/57 | Higher package thermal mass (SMC/DO-214AB); same VWM/VBR/VC but higher IPPM (32.4 A) and PPPM (1500 W); RθJA = 35 °C/W vs. 72 °C/W. | Better suited for higher-energy transients or elevated ambient temperatures (>85 °C); requires larger pad layout (7.1 mm × 6.2 mm vs. 5.0 mm × 5.0 mm). | Choose when surge energy exceeds 1000 W or board space allows larger footprint; not drop-in compatible due to package size and thermal pad requirements. |
Compared with SMB10J30AHE3_B/I, SMBJ30AHE3_A/H offers identical protection performance with different packaging logistics, while SMCJ30AHE3/57 provides higher surge capacity at the cost of larger footprint and altered thermal management - both require separate validation for automotive AEC-Q101 compliance documentation.
Availability
SMB10J30AHE3_B/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, motor drive gate protection, and telecom DC power inputs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMB10J30AHE3_B/I 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, efficiency, and application-specific optimization.
The SMB10J series belongs to Vishay's TRANSZORB® TVS portfolio, engineered specifically for high-power-density, surface-mount surge protection in automotive, industrial, and communications infrastructure where AEC-Q101 compliance and low-profile packaging are mandatory.
FAQ
What is the clamping voltage of SMB10J30AHE3_B/I at its rated peak pulse current?
The SMB10J30AHE3_B/I has a maximum clamping voltage (VC) of 48.4 V at 20.7 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream components like MCUs or gate drivers remain within absolute maximum ratings.
Is SMB10J30AHE3_B/I qualified for automotive applications?
Yes, SMB10J30AHE3_B/I is AEC-Q101 qualified, meaning it has passed rigorous stress tests including temperature cycling, high-temperature reverse bias (HTRB), and ESD per the AEC standard. The "HE3" suffix explicitly denotes RoHS-compliant and AEC-Q101 qualified construction, making SMB10J30AHE3_B/I suitable for under-hood and chassis-mounted automotive electronics such as body control modules and ADAS power supplies.
What does the "B/I" suffix mean in SMB10J30AHE3_B/I?
The "B/I" suffix in SMB10J30AHE3_B/I indicates the packaging configuration: "B" denotes the revision level (Revision B per Vishay document 88422), and "I" specifies 13-inch diameter plastic tape-and-reel delivery containing 3200 units. This differs from "H"-suffixed variants which use 7-inch reels with 750 units - both share identical electrical, thermal, and mechanical specifications.
How does SMB10J30AHE3_B/I compare to bidirectional TVS diodes with the same voltage rating?
SMB10J30AHE3_B/I is unidirectional and intended for DC line protection where polarity is fixed (e.g., +24 V rail to GND). Unlike bidirectional variants like SMB8J30CAHE3_B/I, it cannot protect AC or differential signals. Its unidirectional structure yields lower leakage (<1.0 µA) and higher PPPM (1000 W vs. 800 W for bidirectional), but requires correct orientation during placement - the cathode band must face the protected line.
What is the thermal resistance of SMB10J30AHE3_B/I, and how does it affect layout design?
SMB10J30AHE3_B/I has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes minimum recommended pad layout per Vishay's datasheet; reducing pad area increases RθJA and risks exceeding TJ(max) = +150 °C during repeated surges. Layout must maintain those pad dimensions and avoid thermal isolation to ensure reliable long-term operation.
SMB10J30AHE3_B/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB10J30AHE3_B/I FAQ
1.How can I place an order for SMB10J30AHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J30AHE3_B/I 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 SMB10J30AHE3_B/I reliable?
The price and inventory of SMB10J30AHE3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J30AHE3_B/I is usually 5 days.
3.What payment methods are accepted for SMB10J30AHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J30AHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J30AHE3_B/I?
SMB10J30AHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J30AHE3_B/I 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 SMB10J30AHE3_B/I?
For technical support, including SMB10J30AHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J30AHE3_B/I requirements.
6.How does Aetrix verify that SMB10J30AHE3_B/I is sourced from the original manufacturer or authorized distributors?
All SMB10J30AHE3_B/I 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 SMB10J30AHE3_B/I meets industry standards.
7.What is the process for return or replacement of SMB10J30AHE3_B/I?
All SMB10J30AHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J30AHE3_B/I, 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 SMB10J30AHE3_B/I part is unused and in its original packaging.
Return procedure for SMB10J30AHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J30AHE3_B/I Tags
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