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Vishay General Semiconductor - Diodes Division SMBJ7.0HE3/52
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- Part No.:
- SMBJ7.0HE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ7.0HE3/52.pdf
- Description:
- TVS DIODE 7VWM 13.3VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,099
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Product details
Overview
SMBJ7.0HE3/52 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 7.0 V stand-off voltage (VWM), 7.78–8.60 V breakdown voltage at 10 mA (VBR), 12.0 V maximum clamping voltage at 50.0 A peak pulse current (VC), and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the SMBJ7.0HE3/52 datasheet, SMBJ7.0HE3/52 pinout, SMBJ7.0HE3/52 application, or SMBJ7.0HE3/52 equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, 12.0 V clamping performance at 50 A, thermal resistance (RθJA = 100 °C/W), and RoHS-compliant matte tin-plated leads suitable for automated SMT placement.
Technical Context
This TVS diode operates as a fast-acting shunt protector, responding in <1 ps to overvoltage events and diverting surge current away from downstream circuitry. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<200 µA at 7.0 V), while the unidirectional configuration provides forward conduction path only during reverse-biased transient suppression.
The device is rated for repetitive 600 W pulses (10/1000 µs, 0.01% duty cycle) and handles up to 100 A non-repetitive forward surge (8.3 ms half-sine). Junction temperature range spans −55 °C to +150 °C, and it meets MSL Level 1 per J-STD-020 with 260 °C reflow peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum continuous reverse operating voltage before clamping begins; sets safe margin below system rail voltage. |
| VBR @ IT = 10 mA | 7.78–8.60 V - Breakdown onset range; defines minimum threshold for reliable transient detection and conduction. |
| VC @ IPPM = 50.0 A | 12.0 V - Clamped voltage under 50 A surge; determines maximum stress imposed on protected IC or MOSFET. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 µs waveform; enables robust protection against lightning-induced surges and inductive switching spikes. |
| IFSM | 100 A - Non-repetitive forward surge rating (8.3 ms half-sine); supports high-energy fault conditions without failure. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs PCB layout requirements for thermal management. |
| TJ max. | +150 °C - Maximum junction temperature; allows operation in high-ambient environments such as automotive engine compartments or industrial enclosures. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Polarity marked by cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse bias reference | Connected to lower-potential side of protected line; forms cathode-anode junction that avalanches under reverse overvoltage. |
| Cathode | Clamping output / Surge return path | Connected to higher-potential side (e.g., VCC rail or signal line); conducts surge current to ground or common reference when VWM exceeded. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for under-hood ECUs and ADAS modules. |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surge (4 kV line-earth, 2 kV line-line) when properly laid out on PCB with recommended 5.0 mm × 5.0 mm copper pads. |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes overvoltage overshoot during clamping - critical for protecting 5 V or 3.3 V logic-level devices with tight absolute maximum ratings. |
| MSL Level 1 moisture sensitivity | Enables standard reflow assembly without baking; compatible with high-volume SMT production using 260 °C peak profile. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage current across temperature and lifetime - reduces field failure risk in harsh environments. |
Applications
| Industrial Power Supply Protection | Automotive Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V input rails in programmable logic controllers (PLCs) and motor drives from load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input rail and chassis ground to clamp transients before they reach DC-DC converters or microcontrollers. Use Value: Limits voltage excursion to ≤12.0 V during 50 A surges, preventing latch-up or gate oxide damage in downstream 12 V tolerant ICs. |
Use Scenario: Safeguarding analog outputs (e.g., 4–20 mA loops) and CAN bus lines in vehicle cabin sensors (temperature, pressure, position). IC Role / Device Role / Timing Role: Shunt protector on sensor supply and signal lines, activated within picoseconds to suppress ISO 7637-2 pulse 1, 2a, and 5a transients. Use Value: Maintains signal integrity by clamping to 12.0 V while supporting AEC-Q101 compliance required for Tier-1 automotive sourcing. |
| Consumer Electronics USB Port Protection | Telecom Base Station DC Feed Protection |
|
Use Scenario: Adding secondary overvoltage defense on USB VBUS lines in smart home hubs and docking stations exposed to ESD and hot-plug surges. IC Role / Device Role / Timing Role: Standoff-rated TVS placed upstream of USB controller ICs and polyfuses to absorb energy before internal protection triggers. Use Value: Provides 600 W surge capacity beyond typical ±15 kV HBM ESD rating, extending system-level immunity to real-world cable discharge events. |
Use Scenario: Protecting remote radio head (RRH) DC feed inputs from lightning-induced surges entering via outdoor cabling in 4G/5G macro base stations. IC Role / Device Role / Timing Role: Primary front-end TVS on −48 V DC input, coordinated with gas discharge tubes (GDTs) in hybrid protection schemes. Use Value: Delivers 12.0 V clamping at 50 A with low incremental surge resistance, minimizing let-through energy to downstream DC-DC and FPGA power stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0A-E3/52 | Commercial-grade version; same VWM, VBR, VC, and PPPM, but not AEC-Q101 qualified. | Lacks automotive qualification; suitable for consumer or industrial applications where extended temperature reliability validation is not required. | Select SMBJ7.0A-E3/52 if cost sensitivity outweighs need for automotive qualification and full lifecycle traceability. |
| SMAJ7.0A-E3/52 | Lower power rating (400 W vs. 600 W); identical VWM and VC, but reduced IPPM (32.2 A at 12.0 V). | Insufficient for IEC 61000-4-5 Level 4 or ISO 7637-2 Pulse 5a; limited to lower-energy transients in battery-powered or low-voltage systems. | Choose SMAJ7.0A-E3/52 only when board space constraints prevent SMB footprint or surge threat level is confirmed ≤400 W. |
Compared with SMBJ7.0A-E3/52, SMBJ7.0HE3/52 adds AEC-Q101 qualification and traceable automotive sourcing, while SMAJ7.0A-E3/52 trades 33% peak power capacity for smaller SMA package - making SMBJ7.0HE3/52 the sole choice for automotive-grade 600 W clamping in SMB footprint.
Availability
SMBJ7.0HE3/52 is available at Aetrix Electronics and suitable for industrial power supplies, automotive sensor modules, consumer USB protection circuits, and telecom DC feed systems requiring stable component supply and AEC-Q101 compliance.
Supply support for SMBJ7.0HE3/52 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 optimization.
The SMBJ series was developed to deliver high-power transient suppression in compact surface-mount packages for automotive, industrial, and communications infrastructure - balancing clamping performance, thermal robustness, and manufacturability.
FAQ
What is the clamping voltage of SMBJ7.0HE3/52 at its rated peak pulse current?
The SMBJ7.0HE3/52 has a maximum clamping voltage (VC) of 12.0 V at 50.0 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ7.0HE3/52 maintains this clamping performance across its operational temperature range and is validated per AEC-Q101 stress tests.
Is SMBJ7.0HE3/52 suitable for automotive applications?
Yes, SMBJ7.0HE3/52 is AEC-Q101 qualified and specifically designated for automotive use with suffix "HE3". It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias, and ESD verification. The SMBJ7.0HE3/52 is commonly deployed in engine control units, body electronics, and ADAS sensor modules where reliability under extreme thermal and electrical stress is mandatory.
How does the SMBJ7.0HE3/52 differ from the SMBJ7.0A-E3/52?
The SMBJ7.0HE3/52 and SMBJ7.0A-E3/52 share identical electrical specifications - including VWM = 7.0 V, VBR = 7.78–8.60 V, VC = 12.0 V, and PPPM = 600 W - but differ in qualification and traceability. The SMBJ7.0HE3/52 carries AEC-Q101 certification and automotive-grade material traceability, whereas SMBJ7.0A-E3/52 is commercial-grade only. Both use the same SMB (DO-214AA) package and RoHS-compliant matte tin plating.
What is the maximum operating junction temperature for SMBJ7.0HE3/52?
The SMBJ7.0HE3/52 has a maximum operating junction temperature (TJ) of +150 °C and a storage temperature range of −55 °C to +150 °C. This wide thermal envelope supports deployment in under-hood automotive environments and industrial enclosures with elevated ambient temperatures. Derating curves in the datasheet confirm sustained 600 W pulse capability down to TJ = 125 °C before thermal rolloff begins.
Does SMBJ7.0HE3/52 have polarity marking, and how is it oriented on the PCB?
Yes, SMBJ7.0HE3/52 is unidirectional and features a visible cathode band on the package body - located at the end corresponding to the cathode terminal. During PCB layout, the cathode must be connected to the higher-potential node (e.g., VCC or signal line), and the anode to the lower-potential node (e.g., ground or return path). Incorrect orientation renders the device ineffective for reverse-transient suppression, as forward conduction would occur during normal operation.
SMBJ7.0HE3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 13.3V
- Current - Peak Pulse (10/1000µs):
- 45.1A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ7.0HE3/52 FAQ
1.How can I place an order for SMBJ7.0HE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ7.0HE3/52 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 SMBJ7.0HE3/52 reliable?
The price and inventory of SMBJ7.0HE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ7.0HE3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ7.0HE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ7.0HE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ7.0HE3/52?
SMBJ7.0HE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ7.0HE3/52 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 SMBJ7.0HE3/52?
For technical support, including SMBJ7.0HE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ7.0HE3/52 requirements.
6.How does Aetrix verify that SMBJ7.0HE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ7.0HE3/52 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 SMBJ7.0HE3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ7.0HE3/52?
All SMBJ7.0HE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ7.0HE3/52, 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 SMBJ7.0HE3/52 part is unused and in its original packaging.
Return procedure for SMBJ7.0HE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ7.0HE3/52 Tags
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