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Vishay General Semiconductor - Diodes Division SMBJ8.0AHE3_A/H
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- Part No.:
- SMBJ8.0AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ8.0AHE3_A/H.pdf
- Description:
- TVS DIODE 8VWM 13.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,100
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Product details
Overview
SMBJ8.0AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping fast-rising ESD and surge transients on power and signal lines. It features 8.0 V stand-off voltage (VWM), 8.89–9.83 V breakdown voltage (VBR) at 10 mA, 13.6 V maximum clamping voltage (VC) at 44.1 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFET gates, sensor interfaces, and USB/RS-485 lines in industrial control systems.
For engineers reviewing the SMBJ8.0AHE3_A/H datasheet, SMBJ8.0AHE3_A/H pinout, SMBJ8.0AHE3_A/H application, or SMBJ8.0AHE3_A/H equivalent, this device is selected for robust overvoltage protection where low clamping voltage, AEC-Q101 qualification, and RoHS-compliant automotive-grade reliability are required in space-constrained PCB layouts.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, conducting only when reverse voltage exceeds VBR, with cathode band marking polarity. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 µA at 8.0 V), while thermal resistance of 100 °C/W (junction-to-ambient) supports operation up to +150 °C junction temperature under defined pad layout.
The device meets MSL level 1 per J-STD-020, with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102, and is qualified to AEC-Q101 for automotive applications - distinguishing it from commercial-grade E3/M3 variants by enhanced reliability testing and traceability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - maximum continuous reverse operating voltage before clamping begins; sets safe margin below system supply rails. |
| VBR (min/max) | 8.89 V / 9.83 V at 10 mA - verified breakdown range ensuring consistent turn-on across production lots. |
| VC @ IPPM | 13.6 V at 44.1 A - clamping voltage during 600 W transient; limits stress on downstream ICs during surge events. |
| PPPM | 600 W - peak pulse power handling with 10/1000 µs waveform; enables protection against IEC 61000-4-5 Level 3 surges. |
| IFSM | 100 A - non-repetitive forward surge current rating (8.3 ms half-sine); supports inrush tolerance in power rail protection. |
| TJ max. | +150 °C - maximum junction temperature; allows use in under-hood automotive or high-ambient industrial environments. |
| Package | SMB (DO-214AA) - 0.205" × 0.130" footprint with 0.086" lead spacing; compatible with automated SMT placement and reflow. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional configuration with cathode band marking on one end. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H), with 1.52 mm minimum lead width and 2.18 mm minimum cathode-to-anode distance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased terminal | Connected to protected line; conducts during overvoltage to shunt current to ground. |
| Anode (non-banded end) | Reference/ground terminal | Typically tied to system ground or low-impedance return path; completes clamping circuit. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics per stress test requirements including HTOL, TC, and UHAST - enabling use in ADAS and body control modules. |
| 600 W peak pulse power | Withstands 10/1000 µs surges up to 44.1 A without degradation - suitable for IEC 61000-4-5 compliance in industrial power supplies. |
| Low clamping ratio (VC/VBR ≈ 1.38) | Ensures minimal overvoltage exposure to protected ICs - critical for safeguarding 3.3 V or 5 V logic interfaces. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life before reflow; eliminates bake requirements and simplifies manufacturing logistics. |
| Glass-passivated junction | Provides stable VBR tolerance and low leakage (<1.0 µA) over temperature and lifetime - improves long-term reliability in harsh environments. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp spikes above 13.6 V. Use Value: Limits voltage seen by downstream DC/DC converters and microcontrollers to ≤13.6 V during 600 W surges, preventing latch-up or damage. |
Use Scenario: Shielding analog output lines of pressure/temperature sensors in factory automation. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to absorb ESD and cable discharge events. Use Value: Clamps transients within <1 ns response time while maintaining <1.0 µA leakage at 8.0 V - preserving signal integrity and offset accuracy. |
| USB 2.0 Data Line Protection | Motor Drive Gate Driver Protection |
|
Use Scenario: Safeguarding D+/D− lines of embedded USB ports against human-body-model (HBM) ESD. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS placed inline with data traces to ground. Use Value: Provides 13.6 V clamping without adding significant capacitance - avoids signal rise-time degradation in 480 Mbps signaling. |
Use Scenario: Protecting high-side gate drivers in BLDC motor controllers from Miller-induced voltage spikes. IC Role / Device Role / Timing Role: TVS connected between gate and source to clamp negative-going transients during switching. Use Value: Absorbs 100 A surge current (8.3 ms) without failure, preventing false turn-on or gate oxide rupture in Si MOSFETs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0A-E3/52 | Commercial-grade, RoHS-compliant, non-AEC-Q101 qualified; identical electrical specs but no automotive reliability validation. | Limited to non-automotive industrial or consumer applications where extended temperature cycling and humidity testing are not required. | Select when cost sensitivity outweighs automotive qualification needs and full lifecycle traceability is not mandated. |
| SAC8.0 | Same VWM and VC, but in SOD-123 package (smaller footprint, lower PPPM = 400 W); higher thermal resistance (RθJA = 150 °C/W). | Suitable for low-energy ESD-only scenarios (e.g., handheld devices), not for high-energy surges like load dump or lightning-induced transients. | Choose only for space-constrained designs with ≤400 W surge requirements and ambient temperatures <85 °C. |
Compared with SMBJ8.0AHE3_A/H, SMBJ8.0A-E3/52 offers identical clamping performance at lower cost but lacks AEC-Q101 validation, while SAC8.0 reduces board area at the expense of 33 % lower surge power handling and reduced thermal margin - making SMBJ8.0AHE3_A/H the optimal choice for automotive and high-reliability industrial deployments.
Availability
SMBJ8.0AHE3_A/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, USB interface protection, and motor drive gate circuits requiring stable component supply, AEC-Q101 traceability, and long-term manufacturing continuity.
Supply support for SMBJ8.0AHE3_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, TVS devices, and optoelectronics with emphasis on reliability, precision, and application-specific optimization.
The SMBJ series was engineered for high-energy transient suppression in automotive and industrial systems, combining AEC-Q101 qualification, low-clamp performance, and robust packaging to meet stringent EMC and safety standards.
FAQ
What is the maximum clamping voltage of SMBJ8.0AHE3_A/H at its rated peak pulse current?
The SMBJ8.0AHE3_A/H has a maximum clamping voltage (VC) of 13.6 V at its rated peak pulse current (IPPM) of 44.1 A, measured under the standard 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and ensures predictable overvoltage limiting for protected ICs. The SMBJ8.0AHE3_A/H maintains this clamping performance with minimal derating up to +125 °C junction temperature.
Is SMBJ8.0AHE3_A/H suitable for bidirectional transient protection?
No, SMBJ8.0AHE3_A/H is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. For bidirectional protection, Vishay specifies the "CA" suffix (e.g., SMBJ8.0CA). Using SMBJ8.0AHE3_A/H in bidirectional configurations risks forward conduction during negative transients and inadequate clamping - always verify polarity alignment in circuit design. The SMBJ8.0AHE3_A/H must be oriented with cathode toward the protected line.
Does SMBJ8.0AHE3_A/H require derating at elevated ambient temperatures?
Yes, SMBJ8.0AHE3_A/H requires derating of peak pulse power above TA = 25 °C, per Figure 2 in Vishay document 88392. At 85 °C ambient, its 600 W PPPM rating drops to approximately 420 W; at 125 °C, it falls to ~240 W. Derating is based on junction temperature limits and thermal resistance (RθJA = 100 °C/W), so proper PCB copper pour and layout are essential to maintain SMBJ8.0AHE3_A/H performance in high-temperature environments.
What does the "HE3" suffix indicate in SMBJ8.0AHE3_A/H?
The "HE3" suffix in SMBJ8.0AHE3_A/H denotes RoHS-compliant construction with AEC-Q101 qualification - distinguishing it from commercial-grade "E3" (RoHS only) and "HM3" (halogen-free + RoHS) variants. The "_A/H" revision code specifies packaging: "H" indicates 7″ tape-and-reel (750 units/reel), and "A" is the revision identifier. This suffix confirms SMBJ8.0AHE3_A/H meets automotive reliability standards including temperature cycling, humidity testing, and long-term stability requirements.
Can SMBJ8.0AHE3_A/H replace SMBJ8.0A-E3/52 in an existing design?
SMBJ8.0AHE3_A/H is electrically and mechanically pin-compatible with SMBJ8.0A-E3/52 - same SMB package, identical VWM, VBR, VC, and PPPM. However, SMBJ8.0AHE3_A/H adds AEC-Q101 qualification, tighter process controls, and full automotive traceability. Replacement is functionally seamless but requires validation of qualification requirements and documentation alignment; no PCB or schematic changes are needed for the SMBJ8.0AHE3_A/H drop-in upgrade.
SMBJ8.0AHE3_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):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 13.6V
- Current - Peak Pulse (10/1000µs):
- 44.1A
- 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)
SMBJ8.0AHE3_A/H FAQ
1.How can I place an order for SMBJ8.0AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ8.0AHE3_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 SMBJ8.0AHE3_A/H reliable?
The price and inventory of SMBJ8.0AHE3_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 SMBJ8.0AHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ8.0AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ8.0AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ8.0AHE3_A/H?
SMBJ8.0AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ8.0AHE3_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 SMBJ8.0AHE3_A/H?
For technical support, including SMBJ8.0AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ8.0AHE3_A/H requirements.
6.How does Aetrix verify that SMBJ8.0AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ8.0AHE3_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 SMBJ8.0AHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ8.0AHE3_A/H?
All SMBJ8.0AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ8.0AHE3_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 SMBJ8.0AHE3_A/H part is unused and in its original packaging.
Return procedure for SMBJ8.0AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ8.0AHE3_A/H Tags
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