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Vishay General Semiconductor - Diodes Division SMBJ3V3HM3_B/H
- Part No.:
- SMBJ3V3HM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ3V3HM3_B/H.pdf
- Description:
- 600W,3.3V UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,527
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Product details
Overview
SMBJ3V3HM3_B/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping fast-rising ESD and surge transients on power and signal lines. It features 600 W peak pulse power (10/1000 µs), 3.3 V stand-off voltage (VWM), 5.8 V maximum clamping voltage (VC) at 29.2 A peak pulse current, and operates across -55 °C to +150 °C junction temperature - deployed in automotive sensor interface protection.
For engineers reviewing the SMBJ3V3HM3_B/H datasheet, SMBJ3V3HM3_B/H pinout, SMBJ3V3HM3_B/H application, or SMBJ3V3HM3_B/H equivalent, this page delivers verified electrical specs, thermal derating behavior, AEC-Q101 qualification status, and direct replacement guidance for industrial and automotive board-level surge protection design.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for low clamping voltage and sub-nanosecond response time. Its unidirectional polarity enables cathode-grounded placement on DC supply rails, with 0.057 %/°C temperature coefficient of breakdown voltage ensuring stable VBR over temperature.
Rated for 600 W peak pulse power under 10/1000 µs waveform and 100 A non-repetitive forward surge (8.3 ms half-sine), it meets MSL Level 1 per J-STD-020 and supports reflow up to 260 °C peak. The halogen-free, RoHS-compliant HM3 suffix confirms AEC-Q101 qualification for automotive use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 3.3 V - Maximum continuous reverse operating voltage before leakage exceeds 100 µA; sets upper limit for protected line voltage. |
| VBR (min/max) | 3.67 V / 4.06 V at 10 mA - Confirmed breakdown range ensures reliable turn-on during overvoltage events without premature conduction. |
| VC @ IPPM | 5.8 V at 29.2 A - Clamping voltage under 10/1000 µs surge defines worst-case voltage seen by downstream ICs. |
| PPPM | 600 W - Peak pulse power rating determines survivability against lightning-induced or inductive-switching transients. |
| IFSM | 100 A - Single half-sine surge current rating validates robustness against motor or relay coil turn-off spikes. |
| TJ max | +150 °C - Maximum junction temperature enables operation in under-hood automotive environments and high-power PCB layouts. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance informs heatsinking requirements when operating near PD = 5.0 W limit. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, matte tin-plated leads. Cathode indicated by band; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to ground or low-impedance return path; conducts surge current away from protected node during overvoltage. |
| Anode (unbanded end) | Protected line connection | Connected to input/power/signal line requiring clamping; reverse-biased during normal operation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity testing, and mechanical shock per JESD22 standards. |
| 600 W peak pulse power | Withstands 10/1000 µs surges common in ISO 7637-2 and IEC 61000-4-5 test profiles without degradation. |
| Low clamping ratio (VC/VBR ≈ 1.5) | Minimizes voltage overshoot during clamping, protecting 3.3 V logic interfaces and microcontrollers with tight VDD margins. |
| MSL Level 1 moisture sensitivity | Enables standard SMT reflow without baking; compatible with automated placement and high-volume manufacturing. |
| Halogen-free & RoHS-compliant | Fulfills EU Directive 2011/65/EU and IPC-1752A material declaration requirements for green electronics. |
Applications
| Automotive Sensor Interface | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor signal line and chassis ground to clamp transients before reaching ADC or MCU GPIO. Use Value: Limits voltage to ≤5.8 V during 29.2 A surge, preserving 3.3 V rail integrity and preventing latch-up in automotive-grade microcontrollers. |
Use Scenario: Shielding digital input terminals of programmable logic controllers from field-wiring induced surges in factory automation systems. IC Role / Device Role / Timing Role: Standoff-rated TVS on 24 V DC input lines, absorbing repetitive switching transients from solenoid valves and contactors. Use Value: Maintains 3.3 V logic compatibility via precise 3.3 V VWM, enabling direct integration with isolated input stage circuitry without level-shifting. |
| Consumer USB Power Port | Telecom PoE Midspan Protection |
Use Scenario: Safeguarding USB-C VBUS lines in portable chargers and docking stations against hot-plug and ESD events. IC Role / Device Role / Timing Role: Primary clamping device on 5 V supply rail, positioned upstream of USB power delivery controller and load switch. Use Value: Sub-6 V clamping ensures compliance with USB PD 3.1 voltage tolerance limits while surviving >10,000 ESD strikes per IEC 61000-4-2 Level 4. |
Use Scenario: Protecting Ethernet PHY power pins in IEEE 802.3af/at midspan injectors exposed to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Secondary TVS on 48 V PoE output side, coordinated with primary GDT and series impedance to meet UL 60950-1 surge immunity. Use Value: 600 W rating sustains multiple 10/1000 µs surges up to 1 kV without parametric shift, supporting multi-port injector longevity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ3V3HE3_B/H | Same electrical specs but RoHS-compliant commercial grade (non-AEC-Q101); no halogen-free certification. | Lacks automotive qualification; suitable for industrial/commercial designs where AEC-Q101 is not mandated. | Select when cost sensitivity outweighs automotive reliability requirements and halogen-free materials are not required. |
| SMAJ3V3-QH | Lower 400 W PPPM; SMA package (smaller footprint, higher RθJA = 140 °C/W); same VWM/VC ratings. | Reduced surge handling margin; limited to lower-energy transients in space-constrained consumer PCBs. | Choose only if board area is critical and surge threat level is below IEC 61000-4-5 Line 3 (0.5 kV/0.25 kA). |
Compared with SMBJ3V3HM3_B/H, SMBJ3V3HE3_B/H offers identical clamping performance without AEC-Q101 validation, while SMAJ3V3-QH trades 33 % lower surge capacity and higher thermal resistance for 30 % smaller footprint - making SMBJ3V3HM3_B/H the optimal choice for automotive and high-reliability industrial deployments demanding full 600 W capability and halogen-free compliance.
Availability
SMBJ3V3HM3_B/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC input stages, USB power delivery systems, and telecom PoE midspan injectors requiring stable component supply with AEC-Q101 assurance and halogen-free compliance.
Supply support for SMBJ3V3HM3_B/H 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 targets board-level transient suppression in harsh environments, engineered for automotive, industrial, and telecom applications where consistent clamping, thermal stability, and qualification compliance are mandatory.
FAQ
What is the breakdown voltage range for SMBJ3V3HM3_B/H?
The SMBJ3V3HM3_B/H has a minimum breakdown voltage (VBR) of 3.67 V and a maximum of 4.06 V at 10 mA test current, measured per ANSI/IEEE C62.35. This tightly controlled range ensures predictable turn-on behavior during overvoltage events while maintaining safe margin below 3.3 V system rails during normal operation. The SMBJ3V3HM3_B/H datasheet specifies these values under TA = 25 °C with derating above ambient.
Is SMBJ3V3HM3_B/H qualified for automotive applications?
Yes, SMBJ3V3HM3_B/H carries the HM3 suffix, indicating halogen-free, RoHS-compliant construction and full AEC-Q101 qualification. It undergoes stress testing including temperature cycling, highly accelerated life testing (HALT), and mechanical shock per JESD22 standards. This makes SMBJ3V3HM3_B/H suitable for under-hood and cabin ECU designs where automotive-grade reliability is required.
What is the maximum clamping voltage of SMBJ3V3HM3_B/H at rated surge current?
The SMBJ3V3HM3_B/H clamps to a maximum of 5.8 V at its rated peak pulse current (IPPM) of 29.2 A under the standardized 10/1000 µs waveform. This value is measured with the device mounted on 0.2" × 0.2" copper pads per JEDEC guidelines. The low VC ensures downstream 3.3 V logic components remain within absolute maximum ratings during surge events.
Can SMBJ3V3HM3_B/H be used in bidirectional configurations?
No, SMBJ3V3HM3_B/H is a unidirectional TVS diode, identified by the "A" suffix and cathode band marking. Bidirectional variants use the "CA" suffix (e.g., SMBJ3V3CA). Using SMBJ3V3HM3_B/H in bidirectional signal paths would result in forward conduction during negative transients, causing failure. For AC or differential lines, select a CA-suffixed part or pair unidirectional devices back-to-back.
What is the thermal resistance and power dissipation rating of SMBJ3V3HM3_B/H?
SMBJ3V3HM3_B/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and a steady-state power dissipation (PD) rating of 5.0 W at TA = 50 °C on an infinite heatsink. Derating applies above 50 °C ambient, per Figure 2 in the Vishay datasheet. These values inform PCB copper area design and thermal management for sustained surge duty cycles.
SMBJ3V3HM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- 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_B/H FAQ
1.How can I place an order for SMBJ3V3HM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ3V3HM3_B/H 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_B/H reliable?
The price and inventory of SMBJ3V3HM3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ3V3HM3_B/H is usually 5 days.
3.What payment methods are accepted for SMBJ3V3HM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ3V3HM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ3V3HM3_B/H?
SMBJ3V3HM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ3V3HM3_B/H 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_B/H?
For technical support, including SMBJ3V3HM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ3V3HM3_B/H requirements.
6.How does Aetrix verify that SMBJ3V3HM3_B/H is sourced from the original manufacturer or authorized distributors?
All SMBJ3V3HM3_B/H 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_B/H meets industry standards.
7.What is the process for return or replacement of SMBJ3V3HM3_B/H?
All SMBJ3V3HM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ3V3HM3_B/H, 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_B/H part is unused and in its original packaging.
Return procedure for SMBJ3V3HM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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