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Vishay General Semiconductor - Diodes Division SMBJ3V3HM3_A/I
- Part No.:
- SMBJ3V3HM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ3V3HM3_A/I.pdf
- Description:
- TVS DIODE 3.3VWM 7.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,284
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Product details
Overview
SMBJ3V3HM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for robust overvoltage protection of 3.3 V supply rails and signal lines. It features a 3.3 V standoff voltage (VWM), 4.1 V minimum breakdown voltage (VBR), 7.3 V clamping voltage at 50 A (10/1000 μs), 600 W peak pulse power, and SMB (DO-214AA) package - deployed to safeguard ICs, MOSFETs, and sensor interfaces in automotive and industrial electronics.
For engineers reviewing the SMBJ3V3HM3_A/I datasheet, SMBJ3V3HM3_A/I pinout, SMBJ3V3HM3_A/I application, or SMBJ3V3HM3_A/I equivalent, key selection criteria include clamping performance under 50 A transients, thermal resistance (RθJL = 20 °C/W), AEC-Q101 qualification status, junction capacitance (5200 pF at 0 V), and compatibility with 0.2" × 0.2" copper pad layouts per JEDEC standards.
Technical Context
This TVS diode operates as a unidirectional clamping device, activated when reverse voltage exceeds its 4.1 V breakdown threshold. Its low clamping ratio (VC/VBR ≈ 1.78) ensures effective suppression of fast transients while limiting stress on downstream 3.3 V logic components.
Designed for high-reliability environments, SMBJ3V3HM3_A/I meets AEC-Q101 stress test requirements and is halogen-free and RoHS-compliant (HM3 suffix). It delivers 200 A peak pulse current capability under 8/20 μs waveform and maintains stable operation across –65 °C to +175 °C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 3.3 V - Maximum continuous reverse operating voltage before conduction begins; matches standard 3.3 V logic supply rails. |
| VBR (min) | 4.1 V - Minimum breakdown voltage at 1 mA test current; defines reliable turn-on threshold for transient suppression. |
| VC @ IPP | 7.3 V at 50 A (10/1000 μs) - Clamped voltage during standardized surge; limits stress on protected 3.3 V circuitry. |
| PPPM | 600 W - Peak pulse power handling capacity; supports high-energy ESD and load-switching transients. |
| CJ @ 0 V | 5200 pF - Junction capacitance at zero bias; impacts high-frequency signal integrity on data lines. |
| TJ max | +175 °C - Maximum junction temperature; enables use in under-hood automotive and high-ambient industrial settings. |
| RθJL | 20 °C/W - Thermal resistance junction-to-lead; informs PCB copper pad sizing for thermal management. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, cathode indicated by color band. Molding compound meets UL 94 V-0; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to ground or lower-potential node; establishes polarity-dependent clamping path. |
| Cathode | Clamping output / Surge return path | Connected to protected line (e.g., 3.3 V rail or signal); conducts surge current to ground during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including HTOL, TCT, and ESD testing - suitable for engine control, ADAS, and infotainment systems. |
| Halogen-free & RoHS-compliant | HM3 suffix confirms compliance with environmental regulations and material restrictions for global manufacturing and end-of-life processing. |
| MSL Level 1 | Moisture sensitivity level 1 per J-STD-020 - no dry-pack or bake required prior to reflow soldering. |
| Fast response time | Sub-nanosecond turn-on enables suppression of ESD (IEC 61000-4-2) and lightning-induced surges before damage occurs. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) in vehicle ECUs against load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between signal line and chassis ground. Use Value: Limits transient voltage to ≤7.3 V during 50 A surges, preserving signal integrity and preventing latch-up in 3.3 V interface ICs. | Use Scenario: Shielding PLC digital input modules and fieldbus nodes from induced surges on 24 V DC-powered sensor lines converted to 3.3 V logic levels. IC Role / Device Role / Timing Role: Standoff-clamp protector on microcontroller GPIO or level-shifter inputs. Use Value: Withstands 200 A (8/20 μs) surges while maintaining <5 μA leakage at 3.3 V - minimizing standby power impact. |
| Consumer USB Power Line Protection | Medical Diagnostic Equipment Input Protection |
Use Scenario: Safeguarding USB VBUS and D+/D− lines in portable medical devices powered via 5 V adapters regulated down to 3.3 V internal rails. IC Role / Device Role / Timing Role: Secondary overvoltage clamp after primary DC-DC converter, upstream of LDOs and USB PHYs. Use Value: 5200 pF capacitance is acceptable for full-speed USB (12 Mbps); clamps ESD events to <10.3 V (8/20 μs). | Use Scenario: Protecting analog front-end inputs of portable ultrasound or ECG units exposed to electrostatic discharge during clinical handling. IC Role / Device Role / Timing Role: Low-leakage (≤200 μA at VWM) transient suppressor on precision ADC reference or sensor bias paths. Use Value: Maintains <1 μA leakage at room temperature - avoids offset drift in high-impedance measurement circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ3V3HE3_A/H | RoHS-compliant but not halogen-free; lacks HM3's halogen-free certification. | Approved for commercial and automotive use (AEC-Q101), same electrical specs and package. | Select when halogen-free requirement is not mandated and cost optimization is prioritized. |
| SMAJ3V3-QH | Lower PPPM (400 W vs. 600 W); SMA package (smaller footprint, higher RθJA = 140 °C/W). | Used where board space is constrained but surge energy is lower; not rated for same automotive thermal cycling. | Choose only for space-constrained consumer designs with verified <400 W surge exposure. |
Compared with SMBJ3V3HE3_A/H and SMAJ3V3-QH, SMBJ3V3HM3_A/I offers halogen-free compliance without sacrificing AEC-Q101 qualification or 600 W surge rating - making it the preferred choice for automotive Tier-1 suppliers requiring full material declaration and high-energy transient immunity.
Availability
SMBJ3V3HM3_A/I is available at Aetrix Electronics and suitable for automotive electronics, industrial PLC I/O modules, and portable medical diagnostics requiring stable component supply, long-term lifecycle support, and traceable halogen-free sourcing.
Supply support for SMBJ3V3HM3_A/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 performance.
The SMBJ series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and medical systems where failure modes must be rigorously controlled and regulatory compliance is mandatory.
FAQ
What is the clamping voltage of SMBJ3V3HM3_A/I at 50 A?
The SMBJ3V3HM3_A/I has a maximum clamping voltage (VC) of 7.3 V when subjected to a 50 A peak pulse current with a 10/1000 μs waveform. This value is measured per the standard test condition defined in the Vishay datasheet (Document Number: 88940) and ensures predictable voltage limiting during common surge events like inductive switching. The SMBJ3V3HM3_A/I maintains this clamping performance across its specified operating temperature range.
Is SMBJ3V3HM3_A/I qualified for automotive applications?
Yes, SMBJ3V3HM3_A/I is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in Vishay's official datasheet. It undergoes rigorous stress testing including high-temperature operating life, temperature cycling, and ESD verification. This qualification makes SMBJ3V3HM3_A/I suitable for use in engine control units, body electronics, and ADAS subsystems where reliability under thermal and mechanical stress is critical.
What does the "HM3" suffix mean in SMBJ3V3HM3_A/I?
The "HM3" suffix in SMBJ3V3HM3_A/I indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification. "H" denotes AEC-Q101 compliance, "M" signifies halogen-free molding compound, and "3" refers to the packaging format (tape-and-reel). The "_A/I" denotes revision A and packaging option I (13-inch reel, 3200 units), per Vishay's ordering nomenclature in Document Number 88940.
How does SMBJ3V3HM3_A/I differ from SMBJ3V3-E3?
SMBJ3V3HM3_A/I is halogen-free and AEC-Q101 qualified, whereas SMBJ3V3-E3 is RoHS-compliant but not halogen-free and lacks automotive qualification. Both share identical electrical characteristics (VWM = 3.3 V, VC = 7.3 V @ 50 A) and SMB package, but SMBJ3V3HM3_A/I meets stricter material and reliability requirements for automotive Tier-1 supply chains and environmentally regulated markets.
What is the junction capacitance of SMBJ3V3HM3_A/I and how does it affect circuit design?
The SMBJ3V3HM3_A/I exhibits a typical junction capacitance (CJ) of 5200 pF at 0 V bias and 1 MHz. This relatively high capacitance limits its use on high-speed data lines (e.g., USB HS, HDMI), but is acceptable for DC power rails and low-to-medium speed signals such as CAN, LIN, or analog sensor outputs. Designers must verify signal rise/fall time degradation and ensure timing margins remain intact when using SMBJ3V3HM3_A/I on active signal paths.
SMBJ3V3HM3_A/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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3.3V
- Voltage - Breakdown (Min):
- 4.1V
- Voltage - Clamping (Max) @ Ipp:
- 7.3V
- Current - Peak Pulse (10/1000µs):
- 50A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 5200pF @ 1MHz
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ3V3HM3_A/I FAQ
1.How can I place an order for SMBJ3V3HM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ3V3HM3_A/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 SMBJ3V3HM3_A/I reliable?
The price and inventory of SMBJ3V3HM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ3V3HM3_A/I is usually 5 days.
3.What payment methods are accepted for SMBJ3V3HM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ3V3HM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ3V3HM3_A/I?
SMBJ3V3HM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ3V3HM3_A/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 SMBJ3V3HM3_A/I?
For technical support, including SMBJ3V3HM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ3V3HM3_A/I requirements.
6.How does Aetrix verify that SMBJ3V3HM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMBJ3V3HM3_A/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 SMBJ3V3HM3_A/I meets industry standards.
7.What is the process for return or replacement of SMBJ3V3HM3_A/I?
All SMBJ3V3HM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ3V3HM3_A/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 SMBJ3V3HM3_A/I part is unused and in its original packaging.
Return procedure for SMBJ3V3HM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ3V3HM3_A/I Tags
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