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Vishay General Semiconductor - Diodes Division SMBJ64AHE3/5B
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- Part No.:
- SMBJ64AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ64AHE3/5B.pdf
- Description:
- TVS DIODE 64VWM 103VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,522
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Product details
Overview
SMBJ64AHE3/5B 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 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 power rail protection and industrial sensor interface circuits.
For engineers reviewing the SMBJ64AHE3/5B datasheet, SMBJ64AHE3/5B pinout, SMBJ64AHE3/5B application, or SMBJ64AHE3/5B equivalent, key selection criteria include its AEC-Q101 qualification, unidirectional polarity with cathode band marking, low thermal resistance (RθJL = 20 °C/W), and compliance with UL 497B surge protector classification under file E136766.
Technical Context
This TVS diode operates as a fast-acting shunt clamp during overvoltage events, leveraging an avalanche breakdown mechanism to limit transient voltages before they damage downstream ICs or MOSFETs. Its 103 V clamping voltage at 5.8 A ensures robust protection of 64 V nominal systems while maintaining low incremental surge resistance and sub-nanosecond response time.
The device is rated for repetitive 600 W pulses (10/1000 µs, 0.01% duty cycle), derated above 25 °C per Fig. 2, and supports operating junction temperatures from –55 °C to +150 °C. Its matte tin-plated leads meet J-STD-002 solderability and JESD 22-B102 whisker testing (Class 2), and it meets MSL Level 1 per J-STD-020 with 260 °C reflow peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 64 V - Maximum continuous reverse working voltage before leakage exceeds 1 µA; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 71.1–78.6 V at 1 mA - Guaranteed avalanche initiation range; ensures predictable turn-on during transients without premature conduction. |
| VC (Clamping Voltage) | 103 V at IPPM = 5.8 A - Peak voltage seen by protected circuit during worst-case 600 W transient; determines stress on downstream components. |
| PPPM (Peak Pulse Power) | 600 W (10/1000 µs) - Sustains high-energy surges common in automotive load-dump or inductive switching events without failure. |
| IFSM (Surge Current) | 100 A (8.3 ms half-sine) - Withstands single-event high-current surges typical of motor drive or relay coil de-energization. |
| TJmax | +150 °C - Enables reliable operation in under-hood automotive environments and industrial enclosures with elevated ambient temperatures. |
| RθJL | 20 °C/W - Low junction-to-lead thermal resistance enables efficient heat transfer to PCB copper pads, critical for repeated surge handling. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads. Cathode identified by molded band on one end; anode is opposite terminal. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal per datasheet Fig. 4.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line (e.g., 64 V supply rail); conducts avalanche current to ground during overvoltage. |
| Anode | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop with minimal inductance. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance - required for engine control, ADAS, and body electronics. |
| 600 W peak pulse power (10/1000 µs) | Handles high-energy transients from ISO 7637-2 Pulse 5a (load dump) without degradation, supporting long-term field reliability. |
| UL 497B recognized (E136766) | Meets safety standard for telecom and industrial signal-line protectors - simplifies system-level certification for surge immunity. |
| Low RθJL = 20 °C/W | Enables effective thermal coupling to PCB copper, allowing sustained surge capability without external heatsinking in space-constrained layouts. |
| MSL Level 1, 260 °C peak reflow | Compatible with standard lead-free SMT assembly processes without moisture sensitivity concerns or baking requirements. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 64 V battery-fed ECUs against load-dump transients up to 35 V over nominal in 12 V/48 V hybrid architectures. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between power rail and chassis ground, clamping within nanoseconds. Use Value: Limits transient voltage to ≤103 V, preventing latch-up or gate oxide rupture in MCU power supplies and CAN transceivers. |
Use Scenario: Safeguarding analog input pins of precision ADCs in factory automation sensors exposed to ESD and inductive kickback. IC Role / Device Role / Timing Role: Front-end transient suppressor on 4–20 mA or 0–10 V signal lines, positioned before series current-limiting resistor. Use Value: Clamps fast-rising transients (<1 ns rise time) while adding <1 pF junction capacitance - preserving signal integrity at DC–10 kHz bandwidth. |
| Telecom DC Power Feeds | Motor Drive Gate Driver Protection |
|
Use Scenario: Securing -48 V DC power inputs in base station equipment against lightning-induced surges on outdoor feeder lines. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input stage, coordinated with upstream MOVs and downstream DC/DC converters. Use Value: Absorbs 600 W surges per IEEE C62.41.2 Category B/C waveforms while maintaining <1 µA leakage at -48 V operating point. |
Use Scenario: Shielding high-side and low-side gate drivers in 64 V BLDC motor inverters from shoot-through-inducing voltage spikes. IC Role / Device Role / Timing Role: Localized TVS across gate-source terminals of SiC MOSFETs, placed adjacent to driver IC output pins. Use Value: Prevents false turn-on by clamping gate voltage excursions beyond ±20 V, ensuring robust commutation timing under EMI-rich conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64AHM3/5B | Halogen-free, RoHS-compliant variant with identical electrical specs and AEC-Q101 qualification; same SMB package and pinout. | No functional difference; selected when halogen-free material compliance is mandated by OEM environmental policy. | Direct drop-in replacement where halogen-free content is required; no layout or validation changes needed. |
| SMCJ64AHE3/5B | Same VWM, VBR, and VC, but in larger SMC (DO-214AB) package with 1500 W PPPM; RθJA = 35 °C/W vs. 100 °C/W for SMBJ. | Used where higher single-pulse energy absorption is required, e.g., primary protection in harsh industrial mains-connected equipment. | Choose when surge energy exceeds 600 W capability; requires PCB footprint change and thermal pad redesign due to larger case size. |
Compared with SMBJ64AHE3/5B, SMBJ64AHM3/5B offers identical protection performance with halogen-free construction, while SMCJ64AHE3/5B trades compactness for 2.5× higher pulse power - making the former ideal for automotive space constraints and the latter for high-energy industrial front-end stages.
Availability
SMBJ64AHE3/5B is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, telecom DC power feeds, and motor drive gate protection requiring stable component supply and AEC-Q101 assurance.
Supply support for SMBJ64AHE3/5B 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 targets high-reliability transient suppression in automotive, industrial, and telecom systems - engineered for fast response, repeatable clamping, and robust thermal performance in surface-mount designs.
FAQ
What is the maximum clamping voltage of SMBJ64AHE3/5B at its rated peak pulse current?
The SMBJ64AHE3/5B has a maximum clamping voltage (VC) of 103 V at its specified peak pulse current (IPPM) of 5.8 A, measured using the standardized 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during a full-rated transient event and is confirmed in the Electrical Characteristics table on page 2 of Vishay document 88392. The SMBJ64AHE3/5B maintains this clamping performance across its qualified operating temperature range.
Is SMBJ64AHE3/5B qualified for automotive applications?
Yes, SMBJ64AHE3/5B is AEC-Q101 qualified, as indicated by the "HE3" suffix per Vishay's ordering nomenclature and confirmed in the Mechanical Data section (page 1). This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and surge endurance - validating its suitability for under-hood and chassis-mounted automotive modules. The SMBJ64AHE3/5B meets these requirements without derating in its specified –55 °C to +150 °C junction temperature range.
What is the standoff voltage (VWM) and why is it critical for SMBJ64AHE3/5B placement?
The standoff voltage (VWM) of SMBJ64AHE3/5B is 64 V - the maximum DC or continuous reverse voltage the device can block without exceeding 1 µA leakage current. This parameter dictates placement relative to system operating voltage: it must be ≥10–15% above nominal rail voltage (e.g., used on a 54–58 V system) to avoid leakage-induced power loss or thermal drift. Exceeding VWM risks premature conduction, making accurate VWM selection essential for stable operation of the SMBJ64AHE3/5B in its intended application.
Does SMBJ64AHE3/5B have UL recognition, and what does that mean for system design?
Yes, SMBJ64AHE3/5B carries Underwriters Laboratories recognition under file E136766 for protector classification per UL 497B, applicable to both unidirectional and bidirectional variants. This recognition validates its surge-handling capability and insulation integrity for use in telecom, industrial, and building automation systems requiring third-party safety certification. Designers may leverage this UL listing to streamline end-equipment approval - the SMBJ64AHE3/5B contributes directly to meeting system-level surge immunity requirements without additional external verification.
What package type and mounting requirements apply to SMBJ64AHE3/5B?
SMBJ64AHE3/5B uses the SMB (DO-214AA) surface-mount package, with dimensions of 4.57 mm × 3.94 mm × 2.20 mm and a cathode band marking. Per Vishay's thermal guidelines, it must be mounted on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 600 W pulse power and thermal resistance (RθJL = 20 °C/W). The SMBJ64AHE3/5B is compatible with standard reflow profiles up to 260 °C peak (MSL Level 1) and requires no pre-baking.
SMBJ64AHE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ64AHE3/5B FAQ
1.How can I place an order for SMBJ64AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ64AHE3/5B 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 SMBJ64AHE3/5B reliable?
The price and inventory of SMBJ64AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ64AHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ64AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ64AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ64AHE3/5B?
SMBJ64AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ64AHE3/5B 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 SMBJ64AHE3/5B?
For technical support, including SMBJ64AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ64AHE3/5B requirements.
6.How does Aetrix verify that SMBJ64AHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ64AHE3/5B 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 SMBJ64AHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ64AHE3/5B?
All SMBJ64AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ64AHE3/5B, 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 SMBJ64AHE3/5B part is unused and in its original packaging.
Return procedure for SMBJ64AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ64AHE3/5B Tags
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