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Vishay General Semiconductor - Diodes Division SMBJ8.0AHE3_B/H
- Part No.:
- SMBJ8.0AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ8.0AHE3_B/H.pdf
- Description:
- 600W,8.0V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,554
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Product details
Overview
SMBJ8.0AHE3_B/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 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 MOSFETs, ICs, and sensor interfaces in industrial power supplies and automotive control modules.
For engineers reviewing the SMBJ8.0AHE3_B/H datasheet, SMBJ8.0AHE3_B/H pinout, SMBJ8.0AHE3_B/H application, or SMBJ8.0AHE3_B/H equivalent, key selection considerations include its AEC-Q101 qualification, unidirectional polarity with cathode band marking, 150 °C max junction temperature, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a clamping device in reverse-biased configuration, conducting only when transient voltage exceeds VBR, thereby limiting downstream voltage to ≤13.6 V. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 µA at 8.0 V).
Designed for single-pulse surge suppression per IEC 61000-4-5 and ANSI/IEEE C62.35 standards, it delivers 44.1 A peak pulse current under 10/1000 µs waveform with 0.01 % duty cycle, and exhibits 0.069 %/°C temperature coefficient of VBR for predictable performance across -55 °C to +150 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - Maximum continuous reverse working voltage before clamping begins; sets safe operating margin below VBR. |
| VBR (min/max) | 8.89 V / 9.83 V at 10 mA - Confirmed breakdown threshold defining turn-on precision and consistency. |
| VC @ IPPM | 13.6 V at 44.1 A - Clamped voltage during worst-case 10/1000 µs surge; determines protected circuit's overvoltage ceiling. |
| PPPM | 600 W - Peak pulse power handling capacity; defines survivability against high-energy transients. |
| ID @ VWM | ≤1.0 µA - Reverse leakage current at rated stand-off voltage; ensures minimal standby power loss and signal integrity. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive and industrial environments. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress per JESD22. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, MSL Level 1 (260 °C reflow peak), RoHS-compliant and halogen-free compliant per Vishay HM3/HE3 designation. Cathode indicated by band marking on case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-impedance return path; completes clamping loop during transient conduction. |
| Cathode | High-side connection point | Connected to protected line (e.g., 12 V rail or sensor input); polarity-sensitive for unidirectional operation. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against lightning-induced surges and inductive switching spikes in 12 V/24 V systems. |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive electronics including body control modules and ADAS sensor interfaces requiring long-term field reliability. |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage exposure to downstream ICs while maintaining fast response time (<1 ns). |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking, simplifying SMT manufacturing flow. |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage drift over temperature and lifetime. |
Applications
| Automotive Body Control Module | Industrial PLC Digital Input |
|---|---|
|
Use Scenario: Protecting microcontroller GPIOs and CAN transceiver power rails from load dump and alternator ripple in vehicle door modules. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed between 12 V supply and ground, triggered within nanoseconds of overvoltage event. Use Value: Limits transient voltage to 13.6 V, preventing latch-up or gate oxide damage in 5 V/3.3 V logic devices powered from regulated 12 V sources. |
Use Scenario: Safeguarding 24 V digital input circuits in programmable logic controllers exposed to relay coil flyback and ESD events. IC Role / Device Role / Timing Role: Standoff protector on field-side input terminal, shunting surge energy before reaching optocoupler input stage. Use Value: Withstands 44.1 A peak current and maintains <1.0 µA leakage at 24 V nominal, preserving input threshold accuracy and noise immunity. |
| Consumer Appliance Motor Drive | Telecom Power Supply Input |
|
Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machine control boards. IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals and H-bridge power rails to clamp inductive kickback. Use Value: 600 W rating handles repetitive 10/1000 µs pulses from motor switching, extending MOSFET lifetime and reducing EMI filter burden. |
Use Scenario: Front-end surge protection on AC/DC adapter inputs subjected to differential-mode surges per IEC 61000-4-5 Level 3. IC Role / Device Role / Timing Role: Secondary-stage clamping device after MOV, providing precise low-clamp voltage for downstream rectifier and controller ICs. Use Value: 13.6 V clamping voltage ensures safe operation of 16 V-rated bridge rectifiers and 20 V-input PMICs without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0A-E3/52 | Commercial-grade (non-AEC-Q101), same electrical specs and SMB package. | Lacks automotive qualification; suitable for consumer/industrial designs without automotive lifecycle requirements. | Select when AEC-Q101 is not mandated and cost optimization is prioritized. |
| SAC8.0 | Same VWM and VC, but in smaller SOD-123FL package (lower PPPM = 400 W). | Lower surge handling limits use to low-energy signal-line protection (e.g., USB, RS-485), not power rail clamping. | Choose only for space-constrained signal-level protection where 400 W suffices. |
Compared with SMBJ8.0AHE3_B/H, SMBJ8.0A-E3/52 offers identical clamping performance without automotive qualification, while SAC8.0 trades surge capacity for footprint reduction - making SMBJ8.0AHE3_B/H the sole choice for AEC-Q101-compliant 600 W power-line protection in SMB form factor.
Availability
SMBJ8.0AHE3_B/H is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLCs, appliance motor drives, and telecom power supply designs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ8.0AHE3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in automotive, industrial, and communications infrastructure where AEC-Q101 compliance and repeatable clamping performance are mandatory.
FAQ
What is the clamping voltage of SMBJ8.0AHE3_B/H at its rated peak pulse current?
The SMBJ8.0AHE3_B/H has a maximum clamping voltage (VC) of 13.6 V at 44.1 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that downstream circuitry sees no more than 13.6 V during a worst-case surge event, protecting sensitive 3.3 V or 5 V ICs connected to the same rail. The SMBJ8.0AHE3_B/H achieves this with low incremental surge resistance and fast sub-nanosecond response.
Is SMBJ8.0AHE3_B/H suitable for automotive applications?
Yes, SMBJ8.0AHE3_B/H is AEC-Q101 qualified, as confirmed by its HE3 suffix and documentation in Vishay's 88392 datasheet. It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias (HTRB), and ESD per JESD22, making it suitable for under-hood and cabin applications such as body control modules, lighting drivers, and sensor interface protection. The SMBJ8.0AHE3_B/H also meets MSL Level 1 for lead-free reflow compatibility in automotive PCB assembly.
How does the breakdown voltage tolerance of SMBJ8.0AHE3_B/H affect circuit design?
The SMBJ8.0AHE3_B/H has a specified VBR range of 8.89 V to 9.83 V at 10 mA test current, representing ±5.5 % tolerance around the nominal 9.36 V typical value. This tight tolerance ensures predictable turn-on behavior across production lots, allowing designers to set VWM at 8.0 V with sufficient margin to avoid false triggering during normal operation while guaranteeing clamping activation before critical overvoltage thresholds are exceeded. The SMBJ8.0AHE3_B/H' 0.069 %/°C temperature coefficient further stabilizes this behavior over temperature.
What is the thermal resistance of SMBJ8.0AHE3_B/H, and how does it impact power dissipation?
The SMBJ8.0AHE3_B/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on minimum recommended 0.2" × 0.2" copper pads. This means that under continuous DC conditions, the device can safely dissipate up to 5.0 W (its rated PD) only if ambient temperature remains near 25 °C - but in real-world transient applications, its 600 W peak pulse rating dominates design margins. The SMBJ8.0AHE3_B/H' RθJL of 20 °C/W supports effective heat transfer to PCB copper, critical for repeated surge events in industrial controls.
Can SMBJ8.0AHE3_B/H be used in bidirectional configurations?
No, SMBJ8.0AHE3_B/H is a unidirectional TVS diode, as indicated by its "A" suffix and cathode band marking. Bidirectional variants use the "CA" suffix (e.g., SMBJ8.0CA) and lack polarity marking. Using SMBJ8.0AHE3_B/H in reverse-biased AC signal paths would result in forward conduction and potential failure. For bidirectional protection, select SMBJ8.0CA or confirm symmetry in VBR and VC specifications - the SMBJ8.0AHE3_B/H is strictly intended for DC or single-polarity transient suppression.
SMBJ8.0AHE3_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):
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ8.0AHE3_B/H FAQ
1.How can I place an order for SMBJ8.0AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ8.0AHE3_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 SMBJ8.0AHE3_B/H reliable?
The price and inventory of SMBJ8.0AHE3_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 SMBJ8.0AHE3_B/H is usually 5 days.
3.What payment methods are accepted for SMBJ8.0AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ8.0AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ8.0AHE3_B/H?
SMBJ8.0AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ8.0AHE3_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 SMBJ8.0AHE3_B/H?
For technical support, including SMBJ8.0AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ8.0AHE3_B/H requirements.
6.How does Aetrix verify that SMBJ8.0AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All SMBJ8.0AHE3_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 SMBJ8.0AHE3_B/H meets industry standards.
7.What is the process for return or replacement of SMBJ8.0AHE3_B/H?
All SMBJ8.0AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ8.0AHE3_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 SMBJ8.0AHE3_B/H part is unused and in its original packaging.
Return procedure for SMBJ8.0AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ8.0AHE3_B/H Tags
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