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Vishay General Semiconductor - Diodes Division SMBJ3V3HE3/52
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- Part No.:
- SMBJ3V3HE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ3V3HE3/52.pdf
- Description:
- TVS DIODE 3.3VWM 10.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,910
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Product details
Overview
SMBJ3V3HE3/52 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for clamping overvoltage transients on 3.3 V power rails and signal lines. It features a 3.3 V standoff voltage (VWM), 4.1 V minimum breakdown voltage (VBR), 7.3 V maximum clamping voltage at 50 A (10/1000 μs), 600 W peak pulse power, and SMB (DO-214AA) package - deployed to protect sensitive ICs, MOSFETs, and sensor interfaces in automotive and industrial electronics.
For engineers reviewing the SMBJ3V3HE3/52 datasheet, SMBJ3V3HE3/52 pinout, SMBJ3V3HE3/52 application, or SMBJ3V3HE3/52 equivalent, key selection criteria include clamping performance under 10/1000 μs surges, AEC-Q101 qualification status, thermal resistance (RθJL = 20 °C/W), junction capacitance (5200 pF at 0 V), and compatibility with automated SMT assembly using J-STD-002-compliant matte tin terminations.
Technical Context
The SMBJ3V3HE3/52 operates as a unidirectional avalanche diode, triggering conduction when reverse voltage exceeds its 4.1 V (min) breakdown threshold to divert surge current away from protected circuitry. Its 7.3 V clamping voltage at 50 A ensures downstream 3.3 V logic remains within safe operating limits during transient events.
Thermally, it sustains 175 °C maximum junction temperature and delivers 5 W steady-state power dissipation at 75 °C ambient when mounted on recommended 5.0 mm × 5.0 mm copper pads. Its 200 A peak pulse current rating under 8/20 μs waveform supports robust lightning and ESD immunity per IEC 61000-4-5.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 3.3 V - Maximum continuous reverse working voltage before clamping begins; matches 3.3 V supply rail tolerance. |
| VBR (min) | 4.1 V - Minimum breakdown voltage at 1 mA test current; ensures reliable turn-on above nominal rail. |
| VC @ IPP = 50 A | 7.3 V - Clamped voltage during 10/1000 μs surge; keeps protected ICs below absolute maximum ratings. |
| PPPM | 600 W - Peak pulse power handling capability; defines energy absorption capacity per transient event. |
| CJ @ 0 V | 5200 pF - Junction capacitance at zero bias; impacts high-speed signal integrity on data lines. |
| RθJL | 20 °C/W - Thermal resistance junction-to-lead; enables accurate thermal design with PCB copper pad heatsinking. |
| TJ max | 175 °C - Maximum junction temperature; supports operation in under-hood automotive environments. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, cathode indicated by color band. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H). Molding compound meets UL 94 V-0.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VREV > VBR. |
| Anode | Reference node / ground return | Typically tied to system ground or low-impedance return path; completes clamping loop. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock per JESD22 standards. |
| MSL Level 1 | Unlimited floor life at ≤30 °C/60% RH; compatible with standard reflow without baking. |
| Matte tin terminations | Lead-free, solderable per J-STD-002 and JESD22-B102; supports lead-free reflow profiles up to 260 °C peak. |
| Low clamping ratio (VC/VWM) | 2.21 - Ratio of 7.3 V clamping to 3.3 V standoff; indicates efficient voltage limiting with minimal headroom margin. |
| High IPPM rating | 200 A @ 8/20 μs - Enables compliance with IEC 61000-4-5 Level 4 (4 kV line-to-ground) surge testing. |
Applications
| Automotive Sensor Protection | Industrial 3.3 V I/O Interface |
|---|---|
Use Scenario: Protecting CAN/LIN transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive switching spikes in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between sensor signal line and chassis ground. Use Value: Prevents latch-up or gate oxide damage in 3.3 V interface ICs by limiting transients to ≤7.3 V during 50 A surges. | Use Scenario: Safeguarding RS-485/UART lines and microcontroller GPIOs in programmable logic controllers exposed to motor drive noise and field wiring surges. IC Role / Device Role / Timing Role: Standoff protection device on bidirectional data lines referenced to 3.3 V supply. Use Value: Maintains signal integrity while absorbing up to 600 W transient energy without degradation across 1000+ surge events. |
| Power Supply Rail Clamp | USB Port ESD Protection |
Use Scenario: Secondary overvoltage protection on 3.3 V DC-DC converter outputs feeding FPGAs or memory subsystems. IC Role / Device Role / Timing Role: Parallel-connected clamping diode across regulated output and ground. Use Value: Limits fault voltage to 7.3 V during input capacitor failure or regulator runaway, preserving downstream logic. | Use Scenario: Front-end transient suppression on USB 2.0 D+/D− lines in embedded host devices subjected to human-body-model ESD. IC Role / Device Role / Timing Role: Low-capacitance (5200 pF) unidirectional clamp referenced to 3.3 V VDDIO. Use Value: Provides IEC 61000-4-2 Level 4 (±15 kV contact) immunity without distorting 480 Mbps data eye. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ3V3A-E3/52 | Unidirectional, same VWM/VBR/VC specs; RoHS-compliant commercial grade (not AEC-Q101 qualified). | Lacks automotive qualification; suitable for industrial/commercial designs without AEC requirements. | Select when AEC-Q101 is not mandated and cost optimization is prioritized. |
| SMCJ3V3HE3/52 | Same electrical specs but in larger SMC (DO-214AB) package; higher thermal mass and RθJA = 40 °C/W vs. 100 °C/W. | Better sustained power handling; requires larger PCB footprint and different pad layout. | Choose for higher-reliability 3.3 V rail protection where board space permits and thermal derating is critical. |
Compared with SMBJ3V3A-E3/52 and SMCJ3V3HE3/52, the SMBJ3V3HE3/52 uniquely combines AEC-Q101 qualification, SMB footprint constraints, and verified 200 A 8/20 μs surge capability - making it optimal for space-constrained automotive modules requiring production-grade validation.
Availability
SMBJ3V3HE3/52 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O protection, and USB peripheral power rail stabilization requiring stable component supply and long-term lifecycle support.
Supply support for SMBJ3V3HE3/52 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 optoelectronics 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 control, and communications infrastructure where robustness against load dump, ESD, and lightning-induced surges is mission-critical.
FAQ
What is the clamping voltage of SMBJ3V3HE3/52 at 50 A?
The SMBJ3V3HE3/52 has a maximum clamping voltage of 7.3 V when subjected to a 50 A peak pulse current with a 10/1000 μs waveform. This value is guaranteed per the Vishay datasheet (Document Number: 88940) and ensures protected 3.3 V circuits remain within safe operating limits during standardized surge events. The clamping behavior is repeatable and validated across temperature ranges from -65 °C to +175 °C.
Is SMBJ3V3HE3/52 qualified for automotive applications?
Yes, SMBJ3V3HE3/52 is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation in the 88940 datasheet. It undergoes stress testing for temperature cycling, humidity, mechanical shock, and high-temperature operating life - meeting requirements for use in engine control units, body electronics, and ADAS sensor modules where automotive-grade reliability is mandatory.
What package type does SMBJ3V3HE3/52 use?
SMBJ3V3HE3/52 uses the SMB (DO-214AA) surface-mount package, measuring 4.57 mm × 3.94 mm × 2.20 mm. Its outline complies with JEDEC DO-214AA standards, features matte tin-plated leads, and supports reflow soldering per J-STD-020 MSL Level 1 - enabling direct integration into high-volume SMT lines without moisture sensitivity concerns.
How does SMBJ3V3HE3/52 differ from SMBJ3V3A-E3/52?
SMBJ3V3HE3/52 and SMBJ3V3A-E3/52 share identical electrical parameters (VWM = 3.3 V, VBR ≥ 4.1 V, VC ≤ 7.3 V), but only SMBJ3V3HE3/52 carries AEC-Q101 qualification. The "HE3" suffix denotes halogen-free, RoHS-compliant, and automotive-qualified construction, whereas "A-E3" is commercial-grade. Both use the same SMB package and tape-and-reel packaging (52 = 7″ reel, 750 pcs).
What is the junction capacitance of SMBJ3V3HE3/52?
The SMBJ3V3HE3/52 exhibits a typical junction capacitance of 5200 pF measured at 0 V and 1 MHz, as specified in the Vishay 88940 datasheet. This value impacts high-frequency signal lines - making it appropriate for lower-speed interfaces like UART, CAN, or power rail clamping, but less suitable for >100 Mbps differential data paths where sub-100 pF devices are preferred.
SMBJ3V3HE3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3.3V
- Voltage - Breakdown (Min):
- 4.1V
- Voltage - Clamping (Max) @ Ipp:
- 10.3V
- Current - Peak Pulse (10/1000µs):
- 200A (8/20µs)
- 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 (SMBJ)
SMBJ3V3HE3/52 FAQ
1.How can I place an order for SMBJ3V3HE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ3V3HE3/52 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 SMBJ3V3HE3/52 reliable?
The price and inventory of SMBJ3V3HE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ3V3HE3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ3V3HE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ3V3HE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ3V3HE3/52?
SMBJ3V3HE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ3V3HE3/52 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 SMBJ3V3HE3/52?
For technical support, including SMBJ3V3HE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ3V3HE3/52 requirements.
6.How does Aetrix verify that SMBJ3V3HE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ3V3HE3/52 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 SMBJ3V3HE3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ3V3HE3/52?
All SMBJ3V3HE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ3V3HE3/52, 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 SMBJ3V3HE3/52 part is unused and in its original packaging.
Return procedure for SMBJ3V3HE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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