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Vishay General Semiconductor - Diodes Division SMBJ30AHE3_B/I
- Part No.:
- SMBJ30AHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ30AHE3_B/I.pdf
- Description:
- 600W,30V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:9,406
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Product details
Overview
SMBJ30AHE3_B/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping inductive switching transients and ESD events on power 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 maximum clamping voltage (VC) at 12.4 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 µs waveform), commonly deployed to protect MOSFET gate drivers and automotive sensor interfaces.
For engineers reviewing the SMBJ30AHE3_B/I datasheet, SMBJ30AHE3_B/I pinout, SMBJ30AHE3_B/I application, or SMBJ30AHE3_B/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), junction temperature range (–55 °C to +150 °C), and compliance with UL 497B surge protector classification.
Technical Context
This TVS diode operates as a voltage-clamping protection device that enters avalanche conduction when reverse voltage exceeds its breakdown threshold (VBR), diverting surge current away from sensitive downstream circuitry. Its low incremental surge resistance and fast response time (<1 ns) enable effective suppression of transient energy from inductive load switching and electrostatic discharge.
The SMBJ30AHE3_B/I is AEC-Q101 qualified and RoHS-compliant, with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102, and meets MSL level 1 (peak reflow 260 °C). Its glass passivated junction ensures stable performance under repetitive surge stress with 0.01 % duty cycle rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC bias margin for protected line. |
| VBR min/max | 33.3 V / 36.8 V at IT = 1 mA - Confirmed breakdown range ensuring reliable turn-on during overvoltage events. |
| VC @ IPPM | 48.4 V at 12.4 A - Clamped voltage seen by protected IC during 10/1000 µs surge; determines residual stress on downstream components. |
| PPPM | 600 W - Peak pulse power handling capability with standard 10/1000 µs waveform; defines transient energy absorption capacity. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; critical for thermal design under repeated surges. |
| TJ max | +150 °C - Maximum allowable junction temperature; supports operation in under-hood automotive environments. |
| IFSM | 100 A - Non-repetitive forward surge current rating (8.3 ms half-sine); validates robustness against accidental forward faults. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with cathode band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H), compliant with JEDEC DO-214AA outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to ground or low-impedance return plane; completes clamping loop during transient events. |
| Cathode | Reverse-biased input / Protected line connection | Connected to the line being protected (e.g., 30 V supply rail or sensor output); avalanche conduction initiates here during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity testing, and surge endurance per JESD22 standards. |
| 600 W peak pulse power (10/1000 µs) | Enables protection against high-energy transients common in 12 V/24 V vehicle power systems and industrial motor drives. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage current under thermal and humidity stress, reducing parameter drift over lifetime. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; compatible with high-volume automated SMT assembly. |
| UL 497B recognition (QVGQ2) | Confirms compliance with telecom and industrial surge protector safety requirements, supporting system-level certification. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
|
Use Scenario: Protecting 30 V supply rails feeding microcontroller I/O and CAN transceiver power domains from load-dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between VCC and GND, responding within <1 ns to limit voltage excursions below 48.4 V. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic circuits powered from regulated 30 V sources during ISO 7637-2 Pulse 5a events. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controllers exposed to field wiring inductive kickback. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across input optocoupler terminals to clamp reverse transients before they reach isolation barrier. Use Value: Maintains input channel integrity under 100 V/100 ms surges per IEC 61000-4-4, eliminating false triggering and component failure. |
| Automotive Sensor Signal Line Protection | Consumer Appliance Motor Driver Power Stage |
|
Use Scenario: Shielding analog outputs of pressure/temperature sensors in engine bay environments from coupled noise and ESD. IC Role / Device Role / Timing Role: Low-capacitance (typ. 140 pF at 0 V) unidirectional TVS placed at sensor connector interface to shunt fast transients. Use Value: Preserves signal fidelity (no loading of mV-level outputs) while meeting ISO 10605 ±15 kV contact discharge immunity. |
Use Scenario: Protecting high-side/low-side MOSFET gates in BLDC motor inverters from Miller-induced voltage spikes during switching transitions. IC Role / Device Role / Timing Role: Localized TVS mounted directly at gate driver output pins to clamp overshoot exceeding gate oxide rating (±20 V). Use Value: Extends MOSFET lifetime by limiting gate-source voltage to ≤48.4 V during 600 W surge events, preventing dielectric breakdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30AHM3_B/I | Halogen-free, RoHS-compliant variant with identical electrical specs and AEC-Q101 qualification. | No functional difference; selected where halogen-free material compliance is mandated by OEM or regional regulation. | Choose SMBJ30AHM3_B/I when environmental compliance requires absence of brominated flame retardants. |
| SMCJ30AHE3_A/I | Same VWM/VBR/VC ratings but in larger SMC (DO-214AB) package with higher RθJA (60 °C/W) and 1500 W PPPM rating. | Better thermal performance and surge margin; requires larger PCB footprint and different pad layout. | Choose SMCJ30AHE3_A/I when system-level surge testing exceeds 600 W or board layout allows SMC footprint. |
Compared with SMBJ30AHE3_B/I, SMBJ30AHM3_B/I offers identical protection performance with halogen-free construction, while SMCJ30AHE3_A/I delivers higher surge robustness in a physically larger package-enabling trade-offs between space-constrained designs and enhanced transient margin.
Availability
SMBJ30AHE3_B/I is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and consumer appliance designs requiring stable component supply with AEC-Q101 qualification and UL recognition.
Supply support for SMBJ30AHE3_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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series is engineered for robust transient suppression in harsh environments-including automotive, industrial, and telecom-delivering consistent clamping performance across temperature and lifetime.
FAQ
What is the polarity configuration of SMBJ30AHE3_B/I?
The SMBJ30AHE3_B/I is a unidirectional transient voltage suppressor diode, meaning it conducts only in reverse bias above its breakdown voltage. The cathode is marked by a band on the SMB package body, and it must be oriented with the cathode toward the protected line and anode toward ground or return path to function correctly. This configuration ensures no forward conduction during normal operation while enabling fast avalanche clamping during overvoltage events.
Does SMBJ30AHE3_B/I meet automotive qualification standards?
Yes, SMBJ30AHE3_B/I is AEC-Q101 qualified, confirming compliance with stress tests including temperature cycling, high-temperature operating life, and surge endurance required for automotive electronic modules. Its qualification applies specifically to the HE3 suffix variant, and documentation is available under Vishay document number 88392, revision 09-Jan-2024. This makes SMBJ30AHE3_B/I suitable for use in body control units, sensor interfaces, and power distribution systems in passenger and commercial vehicles.
What is the maximum clamping voltage of SMBJ30AHE3_B/I under surge conditions?
The SMBJ30AHE3_B/I has a maximum clamping voltage (VC) of 48.4 V at 12.4 A peak pulse current (IPPM), tested with the standard 10/1000 µs waveform. This value represents the highest voltage that will appear across the protected line during a worst-case transient event, ensuring downstream components rated for ≤50 V operation remain within safe limits. VC is measured after full current rise and remains stable due to low incremental surge resistance.
How does the SMBJ30AHE3_B/I package compare to other TVS form factors?
The SMBJ30AHE3_B/I uses the SMB (DO-214AA) package-measuring 4.57 mm × 3.94 mm × 2.20 mm-with standardized pad layout and MSL Level 1 rating. Compared to smaller SOD-123 or larger SMC packages, SMB offers optimal balance of surge capability (600 W), board space efficiency, and manufacturability. Its thermal resistance (RθJA = 100 °C/W) is higher than SMC but lower than SMA, making it ideal for medium-power protection where footprint and reflow compatibility are prioritized.
Is SMBJ30AHE3_B/I compatible with lead-free reflow processes?
Yes, SMBJ30AHE3_B/I is fully compatible with lead-free reflow soldering, rated for peak temperatures up to 260 °C per J-STD-020 MSL Level 1. Its matte tin-plated leads meet J-STD-002 and JESD 22-B102 solderability requirements, and the molding compound complies with UL 94 V-0 flammability standard. No pre-baking is required prior to assembly, supporting high-yield, high-throughput SMT production lines.
SMBJ30AHE3_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):
- 12.4A
- Power - Peak Pulse:
- 600W
- 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)
SMBJ30AHE3_B/I FAQ
1.How can I place an order for SMBJ30AHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ30AHE3_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 SMBJ30AHE3_B/I reliable?
The price and inventory of SMBJ30AHE3_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 SMBJ30AHE3_B/I is usually 5 days.
3.What payment methods are accepted for SMBJ30AHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ30AHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ30AHE3_B/I?
SMBJ30AHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ30AHE3_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 SMBJ30AHE3_B/I?
For technical support, including SMBJ30AHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ30AHE3_B/I requirements.
6.How does Aetrix verify that SMBJ30AHE3_B/I is sourced from the original manufacturer or authorized distributors?
All SMBJ30AHE3_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 SMBJ30AHE3_B/I meets industry standards.
7.What is the process for return or replacement of SMBJ30AHE3_B/I?
All SMBJ30AHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ30AHE3_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 SMBJ30AHE3_B/I part is unused and in its original packaging.
Return procedure for SMBJ30AHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ30AHE3_B/I Tags
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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