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Vishay General Semiconductor - Diodes Division SMBJ64AHE3_B/I
- Part No.:
- SMBJ64AHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ64AHE3_B/I.pdf
- Description:
- 600W,64V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,840
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Product details
Overview
SMBJ64AHE3_B/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 64 V stand-off voltage (VWM), 71.1–78.6 V breakdown voltage (VBR) at 1 mA, 103 V maximum clamping voltage (VC) at 5.8 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive ECUs, industrial I/O modules, and telecom power supplies.
For engineers reviewing the SMBJ64AHE3_B/I datasheet, SMBJ64AHE3_B/I pinout, SMBJ64AHE3_B/I application, or SMBJ64AHE3_B/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), junction temperature range (−55 to +150 °C), and packaging details for reliable circuit protection design and BOM validation.
Technical Context
This TVS diode operates as a unidirectional clamping device, leveraging an avalanche breakdown mechanism to divert transient energy away from sensitive downstream components. Its low incremental surge resistance and fast response time (<1 ns) ensure effective suppression of ESD, lightning-induced surges, and inductive switching spikes on 64 V nominal systems.
The SMBJ64AHE3_B/I is AEC-Q101 qualified and RoHS-compliant, with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. It meets MSL Level 1 (peak reflow 260 °C) and UL 94 V-0 flammability requirements - confirming suitability for automotive under-hood and industrial control environments where reliability under thermal stress is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 64 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC rail operating margin. |
| VBR (Breakdown Voltage) | 71.1–78.6 V at 1 mA - Guaranteed avalanche initiation range; ensures predictable clamping onset across temperature and unit variation. |
| VC (Clamping Voltage) | 103 V at 5.8 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; determines required downstream voltage tolerance. |
| PPPM (Peak Pulse Power) | 600 W - Sustained transient energy handling capability; enables protection against IEC 61000-4-5 Level 4 surges (4 kV line-to-ground). |
| IPPM (Peak Pulse Current) | 5.8 A - Maximum non-repetitive surge current it can shunt without failure; directly tied to PCB trace width and fuse coordination. |
| TJmax | +150 °C - Maximum junction temperature; supports operation in high-ambient environments like engine control units or enclosed industrial drives. |
| RθJA | 100 °C/W - Thermal resistance junction-to-ambient on standard 0.2" × 0.2" copper pads; informs derating above 25 °C ambient. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with cathode band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); terminals are matte tin-plated for lead-free reflow compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path); conducts during forward-biased transients or fault conditions. |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 64 V rail); avalanche breakdown occurs here when Vreverse > VBR, shunting surge to anode. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and ADAS power domains - ensures long-term reliability under thermal cycling and vibration. |
| 600 W peak pulse power (10/1000 µs) | Enables single-device protection against severe transients per ISO 7637-2 Pulse 1/2b/5a and IEC 61000-4-5 without external series impedance. |
| Low clamping ratio (VC/VBR ≈ 1.33) | Minimizes overvoltage stress on downstream ICs - critical for protecting 75 V-rated MOSFETs or 100 V-input DC-DC controllers. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profiles up to 260 °C peak - eliminates baking requirements and simplifies SMT line integration. |
| Glass-passivated junction | Provides stable leakage performance and enhanced surge endurance over 1000+ pulses - essential for industrial equipment with frequent load switching. |
Applications
| Automotive Power Rail Protection | Industrial PLC Digital Input Protection |
|---|---|
|
Use Scenario: Protecting 64 V battery-fed control modules (e.g., HVAC actuators, seat motor drivers) from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between supply rail and ground, activated within <1 ns of overvoltage event. Use Value: Limits transient voltage to ≤103 V, preventing damage to 100 V-rated gate drivers and microcontrollers while maintaining AEC-Q101 compliance. |
Use Scenario: Shielding 24–64 V digital input channels in programmable logic controllers from field-wiring induced surges and ESD. IC Role / Device Role / Timing Role: Standoff-clamp protector on input front-end, absorbing repetitive 10/1000 µs surges up to 600 W without degradation. Use Value: Enables >100,000 surge cycles with <10% VC drift - extending field service life and reducing maintenance in factory automation systems. |
| Telecom DC Power Feeds | Motor Drive Gate Driver Protection |
|
Use Scenario: Safeguarding -48 V or +64 V telecom rectifier outputs and backplane distribution against lightning-induced surges on outdoor cabinet feeds. IC Role / Device Role / Timing Role: Primary overvoltage clamp on bulk power entry point, coordinated with upstream fuses and secondary filtering. Use Value: Withstands 4 kV IEC 61000-4-5 line-to-ground surges while maintaining VWM = 64 V margin - meeting GR-1089-CORE Level 3 requirements. |
Use Scenario: Protecting high-side N-channel MOSFET gate drivers in 64 V BLDC motor inverters from Miller-induced voltage spikes during switching. IC Role / Device Role / Timing Role: Localized clamping device across gate-source or gate-drain, suppressing dv/dt-induced false turn-on. Use Value: Fast <1 ns response and low capacitance (<100 pF) prevent signal distortion while limiting gate overvoltage to safe levels for 100 V-rated drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64AHM3_B/I | Halogen-free, RoHS-compliant variant with identical electrical specs and AEC-Q101 qualification; same SMB package and pinout. | No functional difference; selected where halogen-free material compliance is mandated (e.g., EU public transport, medical devices). | Direct drop-in replacement if halogen-free content is required; no layout or thermal redesign needed. |
| SMAJ64AHE3/A | Lower 400 W PPPM, higher VC = 103 V at 4.1 A, SMA (DO-214AC) package - smaller footprint but lower surge rating and thermal mass. | Suitable only for less demanding applications (e.g., consumer-grade 64 V adapters); not recommended for automotive or industrial surge immunity. | Use only where space constraints outweigh surge robustness needs; verify IEC 61000-4-5 compliance margin is retained. |
Compared with SMBJ64AHE3_B/I, the HM3 variant offers identical protection performance with halogen-free construction, while the SMAJ64AHE3/A trades 33% lower pulse power and reduced thermal capacity for smaller board area - making SMBJ64AHE3_B/I the preferred choice for AEC-Q101 and high-reliability 600 W surge duty.
Availability
SMBJ64AHE3_B/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, and telecom power distribution systems requiring stable component supply with full AEC-Q101 traceability and RoHS compliance.
Supply support for SMBJ64AHE3_B/I 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 engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where consistent clamping performance and long-term stability under thermal stress are mandatory.
FAQ
What is the clamping voltage of SMBJ64AHE3_B/I at its rated peak pulse current?
The SMBJ64AHE3_B/I has a maximum clamping voltage (VC) of 103 V at 5.8 A peak pulse current with a 10/1000 µs waveform. This value is measured under standardized test conditions per ANSI/IEEE C62.35 and represents the upper limit of voltage imposed on the protected circuit during worst-case surge events - critical for ensuring downstream components remain within their absolute maximum ratings.
Is SMBJ64AHE3_B/I qualified for automotive applications?
Yes, SMBJ64AHE3_B/I is AEC-Q101 qualified, as confirmed in the Vishay datasheet revision 09-Jan-2024 (Document Number: 88392). This qualification covers stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing - validating its use in automotive powertrain, chassis, and body electronics where reliability under thermal and mechanical stress is essential.
What does the "HE3" suffix indicate in SMBJ64AHE3_B/I?
The "HE3" suffix in SMBJ64AHE3_B/I denotes a RoHS-compliant, AEC-Q101 qualified version with standard matte tin plating. The "H" indicates AEC-Q101 qualification, "E3" confirms RoHS compliance and commercial-grade reliability, and "B/I" specifies packaging: 13-inch tape-and-reel with 3200 units per reel. This distinguishes it from non-automotive variants like E3-only or M3 (halogen-free) versions.
Can SMBJ64AHE3_B/I be used in bidirectional protection circuits?
No, SMBJ64AHE3_B/I is a unidirectional TVS diode, as indicated by the "A" suffix (e.g., SMBJ64A) and explicit polarity marking (cathode band). For bidirectional protection, Vishay offers the SMBJ64CA variant. Using SMBJ64AHE3_B/I in reverse-biased AC or symmetrical surge scenarios would result in forward conduction and potential failure - always match device polarity to system grounding architecture.
What is the thermal resistance and how does it affect SMBJ64AHE3_B/I's surge capability?
SMBJ64AHE3_B/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W on standard 0.2" × 0.2" copper pads. This value directly impacts its ability to sustain repetitive surges: at elevated ambient temperatures, derating curves (Fig. 2 in datasheet) require reducing peak pulse power to avoid exceeding TJmax = +150 °C - for example, at 85 °C ambient, PPPM must be limited to ~420 W for safe operation.
SMBJ64AHE3_B/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 64V
- Voltage - Breakdown (Min):
- 71.1V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 5.8A
- 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)
SMBJ64AHE3_B/I FAQ
1.How can I place an order for SMBJ64AHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ64AHE3_B/I 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 SMBJ64AHE3_B/I reliable?
The price and inventory of SMBJ64AHE3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ64AHE3_B/I is usually 5 days.
3.What payment methods are accepted for SMBJ64AHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ64AHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ64AHE3_B/I?
SMBJ64AHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ64AHE3_B/I 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 SMBJ64AHE3_B/I?
For technical support, including SMBJ64AHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ64AHE3_B/I requirements.
6.How does Aetrix verify that SMBJ64AHE3_B/I is sourced from the original manufacturer or authorized distributors?
All SMBJ64AHE3_B/I 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 SMBJ64AHE3_B/I meets industry standards.
7.What is the process for return or replacement of SMBJ64AHE3_B/I?
All SMBJ64AHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ64AHE3_B/I, 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 SMBJ64AHE3_B/I part is unused and in its original packaging.
Return procedure for SMBJ64AHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ64AHE3_B/I Tags
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