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Vishay General Semiconductor - Diodes Division SMBJ64A-E3/52
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- Part No.:
- SMBJ64A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ64A-E3/52.pdf
- Description:
- TVS DIODE 64VWM 103VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,435
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Product details
Overview
SMBJ64A-E3/52 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in 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 industrial motor drives, telecom power supplies, and automotive ECUs.
For engineers reviewing the SMBJ64A-E3/52 datasheet, SMBJ64A-E3/52 pinout, SMBJ64A-E3/52 application, or SMBJ64A-E3/52 equivalent, key selection criteria include clamping performance under 5.8 A surge, thermal resistance (RθJA = 100 °C/W), unidirectional polarity marking, RoHS-compliant matte tin plating, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a clamping-type protector: when reverse voltage exceeds VWM = 64 V, it avalanches to limit transient energy by diverting surge current away from downstream ICs or MOSFETs. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM).
The device sustains repetitive 600 W pulses at 0.01 % duty cycle, with fast response time (<1.0 ns), low incremental surge resistance, and thermal derating above 25 °C per Fig. 2. It meets MSL Level 1 (JEDEC J-STD-020) and supports lead-free reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin. |
| VBR (min/max) | 71.1 V / 78.6 V at IT = 1 mA - Ensures reliable avalanche initiation across temperature and process variation. |
| VC @ IPPM | 103 V at 5.8 A (10/1000 µs) - Clamping voltage seen by protected circuit during worst-case surge. |
| PPPM | 600 W - Peak transient power dissipation capability; determines survivability against lightning/inductive spikes. |
| IPPM | 5.8 A - Maximum non-repetitive surge current the device can clamp without failure. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; guides PCB thermal design. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood or high-ambient industrial environments. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with cathode band marking. Matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102. Meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to ground or low-impedance return plane; completes clamping loop during transients. |
| Cathode | Reverse-biased terminal / Protected line connection | Connected to the line being protected (e.g., +64 V rail); avalanche conduction occurs when VAK > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 12–48 V systems without degradation. |
| Low clamping ratio (VC/VWM ≈ 1.61) | Minimizes overvoltage stress on downstream 75 V-rated MOSFETs or 64 V LDOs during clamping. |
| Glass passivated junction | Ensures stable VBR tolerance (±5 % typical), low leakage (<1 µA), and long-term reliability in humid environments. |
| MSL Level 1, 260 °C peak reflow | Enables single-pass lead-free assembly without moisture sensitivity concerns or baking requirements. |
| RoHS-compliant, halogen-free option available | Meets IPC-1752A material declaration requirements for automotive and industrial OEM compliance programs. |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
|
Use Scenario: Protection of gate drivers and bus voltage sense circuits against switching-induced transients in 48 V BLDC inverters. IC Role / Device Role / Timing Role: Unidirectional TVS placed between high-side gate driver output and ground to clamp Miller-induced spikes. Use Value: Limits transient overshoot to ≤103 V, preventing gate oxide rupture in 100 V Si MOSFETs while maintaining <1 µA leakage at 64 V nominal bus. |
Use Scenario: Input-stage surge suppression on -48 V DC distribution boards in central office equipment. IC Role / Device Role / Timing Role: Primary clamping device on rectified -48 V rail, upstream of DC/DC converters and monitoring ICs. Use Value: Absorbs 600 W IEC 61000-4-5 surges without latch-up, preserving system uptime and avoiding false brownout shutdowns. |
| Automotive Body Control Modules | Industrial PLC I/O Modules |
|
Use Scenario: Load-dump and jump-start transient protection on LIN bus power rails in BCMs. IC Role / Device Role / Timing Role: Standoff-rated TVS on 12 V auxiliary supply feeding LIN transceivers and microcontrollers. Use Value: Clamps 12 V rail to ≤103 V during ISO 7637-2 Pulse 5a (load dump), ensuring continued operation of 16 V-tolerant CAN/LIN PHYs. |
Use Scenario: Field-side protection of 24 V digital input channels exposed to inductive solenoid switching noise. IC Role / Device Role / Timing Role: First-line transient shunt on wetted input terminals, before optocoupler or Schmitt trigger input stage. Use Value: Reduces EFT/burst-induced false triggering by limiting common-mode spikes to <103 V, improving EMC immunity per IEC 61000-4-4 Level 4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64CA-E3/52 | Bidirectional variant; symmetric VBR = 71.1–78.6 V in both polarities; no polarity marking. | Required for AC-coupled or dual-polarity signal lines (e.g., RS-485, CAN FD differential pairs); not suitable for DC rail clamping. | Select only if bidirectional clamping is needed; otherwise, unidirectional SMBJ64A-E3/52 offers lower leakage and simpler layout. |
| SMCJ64A-E3/57 | Larger SMC (DO-214AB) package; same VWM/VBR, but higher IPPM = 12.3 A and PPPM = 1500 W. | Used where higher surge margin is required (e.g., outdoor telecom cabinets, railway signaling); occupies more board area. | Choose SMCJ64A-E3/57 only when 600 W is insufficient; SMBJ64A-E3/52 provides optimal density for space-constrained 48 V industrial modules. |
Compared with SMBJ64CA-E3/52, the SMBJ64A-E3/52 delivers lower reverse leakage and simplified polarity-aware routing; compared with SMCJ64A-E3/57, it trades surge headroom for 30 % smaller footprint and compatibility with fine-pitch SMT lines.
Availability
SMBJ64A-E3/52 is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, automotive body control modules, and PLC I/O modules requiring stable component supply, RoHS compliance, and AEC-Q101-qualified alternatives.
Supply support for SMBJ64A-E3/52 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, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The SMBJ series is engineered for high-energy transient suppression in harsh environments - targeting industrial automation, telecom infrastructure, and automotive subsystems where compact size and repeatable clamping performance are critical.
FAQ
What is the maximum clamping voltage of SMBJ64A-E3/52 under a 10/1000 µs surge?
The SMBJ64A-E3/52 has a maximum clamping voltage (VC) of 103 V when subjected to its rated peak pulse current of 5.8 A with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on the protected circuit during transient events. The SMBJ64A-E3/52 maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C).
Is SMBJ64A-E3/52 RoHS-compliant and lead-free compatible?
Yes, SMBJ64A-E3/52 is RoHS-compliant and qualified for lead-free reflow soldering with a maximum peak temperature of 260 °C, meeting J-STD-020 MSL Level 1 requirements. Its matte tin-plated leads are solderable per J-STD-002 and JESD 22-B102, and it conforms to JEDEC JESD201 Class 2 whisker resistance. The "E3" suffix explicitly denotes commercial-grade RoHS compliance for the SMBJ64A-E3/52.
How does SMBJ64A-E3/52 differ from SMBJ64CA-E3/52?
The SMBJ64A-E3/52 is unidirectional with cathode-band polarity marking and specified VBR only in reverse bias, while SMBJ64CA-E3/52 is bidirectional with symmetric breakdown in both directions and no polarity marking. SMBJ64A-E3/52 exhibits lower reverse leakage (<1.0 µA at 64 V) than the bidirectional version, making it preferred for DC rail protection. Both share identical VWM, VBR, and PPPM, but only SMBJ64A-E3/52 is suitable for polarity-sensitive applications like MOSFET gate protection.
What PCB pad layout is recommended for optimal thermal performance of SMBJ64A-E3/52?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad for each terminal of SMBJ64A-E3/52 to achieve the published RθJA = 100 °C/W and sustain 600 W peak pulse power. Thermal vias under pads and internal ground/power planes further reduce junction temperature. Deviation from this layout increases thermal resistance and may cause premature failure during repetitive surges - especially critical in enclosed industrial enclosures where ambient exceeds 70 °C.
Can SMBJ64A-E3/52 be used in automotive applications?
The base SMBJ64A-E3/52 is commercial-grade; however, Vishay offers AEC-Q101-qualified variants under ordering codes SMBJ64AHE3_X (e.g., SMBJ64AHE3_A). These versions undergo stress testing per AEC-Q101 Rev D and are approved for automotive body electronics, infotainment power rails, and ADAS sensor interfaces. For automotive use, specify the HE3 suffix - the standard SMBJ64A-E3/52 is not AEC-Q101 qualified and should be limited to industrial or telecom applications unless validated per customer qualification protocols.
SMBJ64A-E3/52 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ64A-E3/52 FAQ
1.How can I place an order for SMBJ64A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ64A-E3/52 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 SMBJ64A-E3/52 reliable?
The price and inventory of SMBJ64A-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ64A-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ64A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ64A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ64A-E3/52?
SMBJ64A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ64A-E3/52 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 SMBJ64A-E3/52?
For technical support, including SMBJ64A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ64A-E3/52 requirements.
6.How does Aetrix verify that SMBJ64A-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ64A-E3/52 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 SMBJ64A-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ64A-E3/52?
All SMBJ64A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ64A-E3/52, 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 SMBJ64A-E3/52 part is unused and in its original packaging.
Return procedure for SMBJ64A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ64A-E3/52 Tags
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