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Vishay General Semiconductor - Diodes Division SMB10J30A-E3/5B
- Part No.:
- SMB10J30A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J30A-E3/5B.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,027
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Product details
Overview
SMB10J30A-E3/5B from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection with 30 V stand-off voltage (VWM), 33.3–36.8 V breakdown voltage (VBR), and 1000 W peak pulse power (PPPM) at 10/1000 µs waveform. It clamps transients to ≤48.4 V at 20.7 A peak surge current and is AEC-Q101 qualified for automotive electronics.
For engineers reviewing the SMB10J30A-E3/5B datasheet, SMB10J30A-E3/5B pinout, SMB10J30A-E3/5B application, or SMB10J30A-E3/5B equivalent, key selection criteria include its unidirectional polarity, 1.0 µA max reverse leakage at 30 V, 150 °C max junction temperature, RoHS-compliant matte tin plating, and suitability for inductive load switching and sensor line protection in harsh environments.
Technical Context
This TVS diode operates as a clamping device in parallel with sensitive circuitry, activating when reverse voltage exceeds VBR to divert surge current away from downstream components. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance under repetitive stress.
The SMB10J30A-E3/5B is rated for 100 A non-repetitive forward surge current (IFSM) and exhibits a typical thermal resistance of 72 °C/W (junction-to-ambient) on standard 0.2" × 0.2" copper pads - enabling robust thermal performance in compact surface-mount layouts without heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 33.3 V / 36.8 V at 1.0 mA test current - defines precise breakdown threshold for reliable overvoltage triggering |
| VC @ IPPM | 48.4 V at 20.7 A - clamping voltage during 10/1000 µs surge, limiting stress on protected ICs or MOSFETs |
| PPPM | 1000 W - peak pulse power handling capability, supporting high-energy transients per IEC 61000-4-5 Level 4 |
| ID @ VWM | ≤1.0 µA - ultra-low reverse leakage preserves signal integrity and battery life in always-on circuits |
| TJ max | +150 °C - enables operation in under-hood automotive and industrial environments |
| Package | SMB (DO-214AA) - industry-standard 2-pin SMD outline with 5.59 mm × 3.94 mm footprint and MSL level 1 rating |
Pinout & Package
SMB10J30A-E3/5B uses the standard SMB (DO-214AA) surface-mount package: 2-terminal, unidirectional configuration with cathode indicated by a color band on the body. The package features matte tin-plated leads, complies with J-STD-002 solderability, and meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to ground or lower-potential rail; carries surge current during clamping |
| Cathode (banded end) | Reverse-biased terminal | Connected to protected line; avalanche breakdown occurs here when VWM is exceeded |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock testing |
| Glass passivated junction | Ensures long-term stability of VBR and low parameter drift across 150 °C operating range |
| Low profile SMB package | Enables automated placement and high-density PCB layouts while maintaining 1000 W surge capability |
| MSL level 1 rating | Allows unlimited floor life and reflow compatibility up to 260 °C peak temperature without baking |
| RoHS-compliant & halogen-free option | E3 suffix denotes RoHS compliance; HM3 variants available for halogen-free requirements |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V power rails in engine control units (ECUs) against load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery input and DC-DC converter input stage. Use Value: Clamps 100 V/100 ms load dump transients to ≤48.4 V, preventing damage to upstream regulators and microcontrollers. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and inductive coupling in factory automation systems. IC Role / Device Role / Timing Role: Parallel-connected TVS on differential signal lines (e.g., RS-485, CAN PHY inputs). Use Value: Sub-1 ns response time limits voltage overshoot to <50 V during 8 kV contact ESD events, preserving ADC accuracy. |
| Consumer Power Adapter Input Stage | Telecom Surge Protection Module |
|
Use Scenario: Safeguarding AC-DC adapter primary-side rectifiers and controllers against lightning-induced surges on mains input. IC Role / Device Role / Timing Role: Front-end TVS on bridge rectifier output, coordinated with MOV and fuse. Use Value: Handles 1000 W peak pulses without degradation, reducing need for oversized MOVs and improving system longevity. |
Use Scenario: Secondary-side protection in PoE-powered network switches exposed to induced surges on Ethernet data lines. IC Role / Device Role / Timing Role: TVS array component protecting PHY transceivers and magnetics interface. Use Value: 30 V VWM matches common 24–48 V PoE supply rails, enabling precise clamping without false triggering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30A-E3/5B | Same SMB package, identical VWM/VBR/PPPM specs, but not AEC-Q101 qualified | Limited to commercial/industrial use; unsuitable for automotive OEM designs requiring qualification evidence | Select SMBJ30A-E3/5B only if AEC-Q101 is not required and cost optimization is critical |
| 1.5SMC33A | Higher 1500 W PPPM rating, larger SMC (DO-214AB) package, 33 V VWM, 36.7–40.6 V VBR | Better suited for higher-energy surges but requires larger PCB area and different pad layout | Choose 1.5SMC33A when >1000 W surge margin is needed and board space allows SMC footprint |
Compared with SMBJ30A-E3/5B, SMB10J30A-E3/5B adds AEC-Q101 validation for automotive deployment; versus 1.5SMC33A, it trades 500 W peak power for 30 % smaller footprint and tighter VBR tolerance - optimizing space-constrained, qualification-critical designs.
Availability
SMB10J30A-E3/5B is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, consumer power adapters, and telecom infrastructure requiring stable component supply with full traceability and lifecycle management.
Supply support for SMB10J30A-E3/5B 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, TVS devices, and power MOSFETs with emphasis on reliability and application-specific performance.
The SMB10J series targets high-power-density transient suppression in automotive and industrial systems, combining AEC-Q101 qualification, low-profile packaging, and precise clamping for next-generation electronic protection.
FAQ
What is the maximum clamping voltage of SMB10J30A-E3/5B under surge conditions?
The SMB10J30A-E3/5B clamps to a maximum of 48.4 V when subjected to its rated 20.7 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured at the device terminals under standardized test conditions and ensures downstream components experience limited overvoltage stress during transient events.
Is SMB10J30A-E3/5B suitable for automotive applications?
Yes, SMB10J30A-E3/5B is AEC-Q101 qualified and explicitly rated for automotive use. Its construction includes glass-passivated junctions, MSL level 1 moisture sensitivity, and validated performance across -55 °C to +150 °C - meeting requirements for engine bay, body control, and ADAS subsystems where SMB10J30A-E3/5B is deployed.
What does the "E3/5B" suffix indicate in SMB10J30A-E3/5B?
The "E3" suffix denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads; "5B" specifies packaging in 13-inch diameter plastic tape and reel containing 3200 units. This format supports high-volume automated assembly and aligns with Vishay's standard ordering nomenclature for SMB10J30A-E3/5B.
How does SMB10J30A-E3/5B differ from bidirectional TVS diodes like SMB8J30CA?
SMB10J30A-E3/5B is unidirectional and optimized for DC line protection with asymmetric conduction - conducting only in reverse breakdown. In contrast, SMB8J30CA is bidirectional, providing symmetrical clamping for AC or floating signal lines. SMB10J30A-E3/5B offers higher 1000 W PPPM versus 800 W for SMB8J30CA, reflecting its dedicated DC-rail design focus.
What is the thermal resistance of SMB10J30A-E3/5B, and how does it affect layout?
SMB10J30A-E3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W when mounted on 0.2" × 0.2" copper pads per terminal. This value assumes minimum recommended pad layout; reducing pad size increases thermal impedance and may require derating. For sustained surge duty, designers should verify temperature rise using SMB10J30A-E3/5B's 150 °C TJ max limit.
SMB10J30A-E3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMB10J30A-E3/5B FAQ
1.How can I place an order for SMB10J30A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J30A-E3/5B 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 SMB10J30A-E3/5B reliable?
The price and inventory of SMB10J30A-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J30A-E3/5B is usually 5 days.
3.What payment methods are accepted for SMB10J30A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J30A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J30A-E3/5B?
SMB10J30A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J30A-E3/5B 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 SMB10J30A-E3/5B?
For technical support, including SMB10J30A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J30A-E3/5B requirements.
6.How does Aetrix verify that SMB10J30A-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMB10J30A-E3/5B 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 SMB10J30A-E3/5B meets industry standards.
7.What is the process for return or replacement of SMB10J30A-E3/5B?
All SMB10J30A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J30A-E3/5B, 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 SMB10J30A-E3/5B part is unused and in its original packaging.
Return procedure for SMB10J30A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J30A-E3/5B Tags
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