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Vishay General Semiconductor - Diodes Division SMBJ7.0AHE3_A/H
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- Part No.:
- SMBJ7.0AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ7.0AHE3_A/H.pdf
- Description:
- TVS DIODE 7VWM 12VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,403
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Product details
Overview
SMBJ7.0AHE3_A/H 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 (VBR) at 10 mA, 12.0 V maximum clamping voltage (VC) at 50.0 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 µs waveform), used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the SMBJ7.0AHE3_A/H datasheet, SMBJ7.0AHE3_A/H pinout, SMBJ7.0AHE3_A/H application, or SMBJ7.0AHE3_A/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), clamping performance under 10/1000 µs surge, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a fast-acting shunt protector that enters avalanche conduction when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance and low leakage (ID ≤ 800 µA at VWM), while the low incremental surge resistance enables effective energy diversion during ESD or inductive switching events.
The device is rated for repetitive 600 W surges (duty cycle 0.01 %), derated above TA = 25 °C per Fig. 2, and supports operating junction temperatures from –55 °C to +150 °C. Its cathode-band marking identifies polarity, and it meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow peak temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC bias margin for protected circuitry. |
| VBR min/max | 7.78 V / 8.60 V at IT = 10 mA - Confirmed breakdown range ensuring reliable turn-on without premature conduction. |
| VC @ IPPM | 12.0 V at 50.0 A - Clamped voltage during 10/1000 µs surge; determines maximum stress imposed on downstream components. |
| PPPM | 600 W - Peak pulse power handling capability with standard 10/1000 µs waveform; defines transient energy absorption capacity. |
| ID @ VWM | ≤ 800 µA - Reverse leakage current at stand-off voltage; critical for low-power sensor or battery-backed circuits. |
| TJ max. | +150 °C - Maximum junction temperature; sets thermal design limits for PCB layout and power dissipation planning. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; guides heatsinking and layout decisions. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified (HE3 suffix). Cathode indicated by band marking; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts avalanche current to ground during overvoltage events. |
| Anode (unbanded end) | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop during surge. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 surge events up to Level 4 without degradation. |
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics where reliability under thermal cycling and vibration is mandatory. |
| Low profile SMB package | 0.220" × 0.155" footprint supports high-density PCB layouts and compatibility with standard SMT pick-and-place equipment. |
| Fast response time & low clamping ratio | Sub-nanosecond turn-on and VC/VBR ≈ 1.47 ensure minimal overvoltage overshoot during fast transients like ESD or relay bounce. |
| MSL Level 1, 260 °C peak reflow | Eliminates moisture sensitivity concerns and allows single-pass lead-free assembly without baking or special handling. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of gate drivers and microcontroller I/O lines from inductive kickback during MOSFET switching in 24 V DC motor control units. IC Role / Device Role / Timing Role: Unidirectional TVS placed across power rail and ground near driver IC to clamp spikes <100 ns after onset. Use Value: Limits voltage excursion to ≤12.0 V during 50 A transients, preventing latch-up or oxide damage in 3.3 V/5 V logic interfaces. |
Use Scenario: Safeguarding LIN bus transceivers and door module sensors against load dump and jump-start surges in 12 V vehicle systems. IC Role / Device Role / Timing Role: Standoff-rated TVS connected between LIN line and chassis ground to absorb repetitive 600 W pulses without degradation. Use Value: Maintains signal integrity under ISO 7637-2 Pulse 5a (load dump) by clamping to 12.0 V while drawing <800 µA at 7.0 V nominal bus voltage. |
| Consumer Power Adapters | Industrial Sensor Signal Conditioning |
|
Use Scenario: Input-stage surge suppression in universal-input AC-DC adapters subjected to lightning-induced surges on mains lines. IC Role / Device Role / Timing Role: Primary-side TVS mounted across bridge rectifier output to limit transient voltage before bulk capacitor and controller IC. Use Value: Absorbs 600 W 10/1000 µs surges while maintaining 7.0 V standoff, enabling use with 8 V-rated input capacitors and controllers. |
Use Scenario: Protecting analog front-end inputs of 4–20 mA current-loop sensors exposed to field wiring transients in factory automation. IC Role / Device Role / Timing Role: Low-leakage TVS placed across sensor input terminals to suppress ESD and switching noise without affecting 250 Ω loop impedance. Use Value: Delivers <800 µA leakage at 7.0 V, preserving measurement accuracy while clamping fast transients to ≤12.0 V before op-amp input stage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0A-E3/52 | Commercial-grade (non-AEC-Q101), same VWM/VBR/VC specs, identical SMB package and pinout. | Lacks automotive qualification; suitable for industrial/commercial designs not requiring AEC validation. | Select when cost sensitivity outweighs automotive compliance requirements and thermal cycling validation is not mandated. |
| SMBJ7.0CAHE3_A/H | Bidirectional variant with same VWM (7.0 V), but symmetrical clamping in both polarities; VBR min/max = 6.40–7.25 V. | Required for AC-coupled or differential signal lines where reverse polarity transients occur (e.g., RS-485, CAN). | Choose only if bidirectional protection is needed; unidirectional SMBJ7.0AHE3_A/H offers tighter VBR tolerance and lower leakage for DC rails. |
Compared with SMBJ7.0A-E3/52, SMBJ7.0AHE3_A/H adds AEC-Q101 qualification for automotive use without sacrificing clamping performance; versus SMBJ7.0CAHE3_A/H, it provides superior unidirectional leakage control and higher VBR consistency for DC power rail protection.
Availability
SMBJ7.0AHE3_A/H is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and consumer power adapters requiring stable component supply with AEC-Q101 validation and SMT-ready packaging.
Supply support for SMBJ7.0AHE3_A/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, and protection devices with emphasis on reliability, thermal performance, and automotive-grade validation.
The SMBJ series delivers standardized 600 W transient suppression in compact SMB packages, engineered specifically for high-volume industrial and automotive applications demanding consistent clamping, low leakage, and AEC-Q101 compliance.
FAQ
What is the maximum clamping voltage of SMBJ7.0AHE3_A/H at its rated peak pulse current?
The SMBJ7.0AHE3_A/H has a maximum clamping voltage (VC) of 12.0 V at 50.0 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ7.0AHE3_A/H maintains this clamping performance across its qualified operating temperature range.
Is SMBJ7.0AHE3_A/H qualified for automotive applications?
Yes, SMBJ7.0AHE3_A/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation in the 88392 datasheet. This qualification covers stress testing for temperature cycling, humidity, mechanical shock, and high-temperature operating life-making SMBJ7.0AHE3_A/H suitable for under-hood and body electronics in passenger vehicles and commercial fleets.
What does the "HE3" suffix indicate in SMBJ7.0AHE3_A/H?
The "HE3" suffix in SMBJ7.0AHE3_A/H denotes RoHS-compliant construction with AEC-Q101 qualification, distinguishing it from commercial-grade variants like "E3". The "H" indicates the preferred package code (7" tape and reel, 750 units), and "A/H" refers to the revision level per Vishay's ordering nomenclature. This full suffix confirms SMBJ7.0AHE3_A/H meets automotive reliability and environmental standards.
How does SMBJ7.0AHE3_A/H differ from bidirectional SMBJ7.0CAHE3_A/H?
SMBJ7.0AHE3_A/H is unidirectional with cathode marking and optimized for DC rail protection, offering 800 µA max reverse leakage at 7.0 V. In contrast, SMBJ7.0CAHE3_A/H is bidirectional, lacks polarity marking, and exhibits symmetrical clamping-but with higher leakage (doubled ID limit per note 3) and lower VBR consistency. SMBJ7.0AHE3_A/H is preferred for power supply inputs; SMBJ7.0CAHE3_A/H suits AC or differential lines.
What is the thermal resistance of SMBJ7.0AHE3_A/H, and how does it affect PCB layout?
SMBJ7.0AHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes standard FR-4 board thickness and no internal plane coupling. To maintain TJ ≤ 150 °C under repetitive surges, designers must ensure adequate copper area and avoid routing heat-sensitive components nearby-SMBJ7.0AHE3_A/H does not require external heatsinks in most applications.
SMBJ7.0AHE3_A/H 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:
- 12V
- Current - Peak Pulse (10/1000µs):
- 50A
- 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)
SMBJ7.0AHE3_A/H FAQ
1.How can I place an order for SMBJ7.0AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ7.0AHE3_A/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 SMBJ7.0AHE3_A/H reliable?
The price and inventory of SMBJ7.0AHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ7.0AHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ7.0AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ7.0AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ7.0AHE3_A/H?
SMBJ7.0AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ7.0AHE3_A/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 SMBJ7.0AHE3_A/H?
For technical support, including SMBJ7.0AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ7.0AHE3_A/H requirements.
6.How does Aetrix verify that SMBJ7.0AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ7.0AHE3_A/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 SMBJ7.0AHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ7.0AHE3_A/H?
All SMBJ7.0AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ7.0AHE3_A/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 SMBJ7.0AHE3_A/H part is unused and in its original packaging.
Return procedure for SMBJ7.0AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ7.0AHE3_A/H Tags
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