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Vishay General Semiconductor - Diodes Division SMB10J30A-M3/5B
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- Part No.:
- SMB10J30A-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J30A-M3/5B.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,525
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Product details
Overview
SMB10J30A-M3/5B 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 (10/1000 µs). It clamps transients to ≤48.4 V at 20.7 A peak surge current and is qualified to AEC-Q101 for automotive electronics.
For engineers reviewing the SMB10J30A-M3/5B datasheet, SMB10J30A-M3/5B pinout, SMB10J30A-M3/5B application, or SMB10J30A-M3/5B equivalent, key selection criteria include clamping voltage under 10/1000 µs surge, unidirectional polarity for DC rail protection, halogen-free RoHS compliance (M3 suffix), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamping protection device across DC power rails or signal lines, triggering when reverse voltage exceeds its specified breakdown range. Its glass-passivated junction ensures stable VBR tolerance and low leakage (<1.0 µA at 30 V), while low incremental surge resistance enables effective energy diversion during fast transients.
The SMB10J30A-M3/5B is rated for 150 °C maximum junction temperature and exhibits 72 °C/W junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads. It 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 inductive load switching events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 33.3 V / 36.8 V - Breakdown occurs within this range at 1.0 mA test current, defining turn-on threshold |
| VC @ IPPM | 48.4 V - Clamped voltage at 20.7 A peak pulse current (10/1000 µs), limiting downstream stress |
| PPPM | 1000 W - Peak pulse power handling capability under standardized 10/1000 µs waveform |
| ID @ VWM | ≤1.0 µA - Reverse leakage at 30 V ensures minimal standby power loss and signal integrity |
| TJ max | +150 °C - Enables operation in under-hood automotive environments and industrial enclosures |
| Package | SMB (DO-214AA) - Surface-mount outline with 2.20 mm height, optimized for high-density PCB layouts |
Pinout & Package
Two-terminal unidirectional TVS diode in SMB (DO-214AA) package. Cathode is marked by a color band on the body; anode is unmarked. Terminals are matte tin-plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink | Connected to protected line (e.g., +12 V rail); conducts during overvoltage to shunt energy to ground |
| Anode (unmarked end) | Reference/return path | Typically tied to system ground or low-impedance return plane; completes clamping path during transient |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress requirements |
| Halogen-free & RoHS-compliant (M3) | Meets JEDEC JESD201 Class 2 whisker resistance and environmental compliance for modern manufacturing |
| Glass-passivated junction | Ensures consistent VBR stability over time and temperature, minimizing parameter drift in harsh environments |
| Low profile SMB package | Height ≤2.20 mm enables use in space-constrained modules such as ADAS ECUs and battery management systems |
| MSL Level 1 rating | Supports lead-free reflow up to 260 °C peak without moisture-induced damage during assembly |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V supply inputs in engine control units (ECUs) against load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp surges before they reach LDOs or microcontrollers. Use Value: Limits transient voltage to ≤48.4 V at 20.7 A, preventing latch-up or permanent damage to downstream ICs rated for 40 V absolute maximum. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to microcontroller ADC inputs in factory automation systems. IC Role / Device Role / Timing Role: Low-capacitance TVS installed across differential or single-ended signal lines to absorb ESD and cable discharge events. Use Value: Sub-1 µA leakage at 30 V preserves signal accuracy; fast response time prevents overshoot from reaching sensitive front-end amplifiers. |
| Telecom DC Power Input Protection | Consumer Device USB Power Line Protection |
Use Scenario: Securing 48 V DC input stages of PoE-powered network switches and base station radios against lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping device on main DC bus, coordinated with upstream fuses and secondary filtering. Use Value: 1000 W PPPM rating handles high-energy transients common in outdoor telecom infrastructure without degradation. | Use Scenario: Adding robust overvoltage protection on VBUS lines of USB-C ports in laptops and docking stations. IC Role / Device Role / Timing Role: Standoff-rated TVS placed between VBUS and chassis ground to suppress hot-plug transients and adapter faults. Use Value: 30 V VWM aligns with USB PD 3.0 20 V max, while 48.4 V clamping prevents damage to USB controller ICs with 5.5 V absolute max ratings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30A-M3/5B | Same VWM (30 V), identical SMB package, but lower PPPM (600 W vs. 1000 W) | Not recommended for high-energy automotive load dump; suitable only for lower-energy ESD or signal-line protection | Select SMB10J30A-M3/5B when 1000 W surge handling is required; choose SMBJ30A-M3/5B only if board space or cost constraints override power rating needs |
| SMCJ30A-M3/5B | Same electrical specs but larger SMC (DO-214AB) package (higher thermal mass, RθJA ≈ 35 °C/W) | Better thermal performance under sustained surge conditions; requires larger PCB footprint | Choose SMB10J30A-M3/5B for compact designs where 72 °C/W RθJA is acceptable; select SMCJ30A-M3/5B for higher-reliability thermal margin in high-ambient environments |
Compared with SMBJ30A-M3/5B and SMCJ30A-M3/5B, the SMB10J30A-M3/5B uniquely delivers 1000 W surge capability in the smallest SMB footprint, balancing power density and layout efficiency for space-constrained automotive and industrial modules.
Availability
SMB10J30A-M3/5B is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power supplies, and consumer USB-C power delivery systems requiring stable component supply and AEC-Q101 assurance.
Supply support for SMB10J30A-M3/5B 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 and application-specific performance.
The SMB10JxxA series targets high-power-density transient suppression in automotive and industrial environments, engineered to meet stringent AEC-Q101 requirements while maintaining low-profile surface-mount compatibility.
FAQ
What is the clamping voltage of SMB10J30A-M3/5B at its rated peak pulse current?
The SMB10J30A-M3/5B clamps to a maximum of 48.4 V when subjected to its rated peak pulse current of 20.7 A under the standard 10/1000 µs waveform. This value is measured at the device terminals and defines the upper voltage limit imposed on protected circuitry during surge events, ensuring compatibility with 40 V-rated downstream components.
Is SMB10J30A-M3/5B suitable for automotive applications?
Yes, SMB10J30A-M3/5B is AEC-Q101 qualified and explicitly designated for automotive use with ordering codes ending in HE3 or HM3. The M3 suffix confirms halogen-free, RoHS-compliant construction, and its 150 °C maximum junction temperature rating supports under-hood deployment in engine control units and body electronics modules.
How does the SMB10J30A-M3/5B differ from the SMBJ30A-M3/5B?
The SMB10J30A-M3/5B delivers 1000 W peak pulse power (10/1000 µs), whereas the SMBJ30A-M3/5B is rated for 600 W. Both share identical VWM (30 V), VBR (33.3–36.8 V), and SMB package, but SMB10J30A-M3/5B uses a higher-power die structure enabling greater surge energy absorption without voltage overshoot.
What is the thermal resistance of SMB10J30A-M3/5B under standard mounting conditions?
The SMB10J30A-M3/5B 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 FR-4 PCB with no internal planes; adding thermal vias or ground planes can reduce effective RθJA in actual designs.
Does SMB10J30A-M3/5B have polarity marking, and how is it identified?
Yes, SMB10J30A-M3/5B is unidirectional and features a cathode band printed on the body - the banded end is the cathode terminal. This marking aligns with industry-standard DO-214AA orientation and must be observed during PCB layout to ensure correct connection between protected line and ground reference.
SMB10J30A-M3/5B 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 (SMBJ)
SMB10J30A-M3/5B FAQ
1.How can I place an order for SMB10J30A-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J30A-M3/5B 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-M3/5B reliable?
The price and inventory of SMB10J30A-M3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J30A-M3/5B is usually 5 days.
3.What payment methods are accepted for SMB10J30A-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J30A-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J30A-M3/5B?
SMB10J30A-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J30A-M3/5B 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-M3/5B?
For technical support, including SMB10J30A-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J30A-M3/5B requirements.
6.How does Aetrix verify that SMB10J30A-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMB10J30A-M3/5B 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-M3/5B meets industry standards.
7.What is the process for return or replacement of SMB10J30A-M3/5B?
All SMB10J30A-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J30A-M3/5B, 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-M3/5B part is unused and in its original packaging.
Return procedure for SMB10J30A-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J30A-M3/5B Tags
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