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Vishay General Semiconductor - Diodes Division SMBJ64AHE3/52
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- Part No.:
- SMBJ64AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ64AHE3/52.pdf
- Description:
- TVS DIODE 64VWM 103VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,091
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Product details
Overview
SMBJ64AHE3/52 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed to protect sensitive electronics against ESD, lightning-induced surges, and inductive switching transients. 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 a 10/1000 µs waveform.
For engineers reviewing the SMBJ64AHE3/52 datasheet, SMBJ64AHE3/52 pinout, SMBJ64AHE3/52 application, or SMBJ64AHE3/52 equivalent, this device is selected for robust overvoltage protection on DC power rails and signal lines in automotive ECUs, industrial PLC I/O modules, and telecom interface circuits where AEC-Q101 qualification, low clamping ratio, and fast response (<1 ns) are critical.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, conducting only when reverse voltage exceeds VBR, with cathode-band polarity marking. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at 64 V), while its MSL Level 1 rating supports lead-free reflow up to 260 °C.
The device delivers 600 W peak pulse power under standardized 10/1000 µs surge conditions, with thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), enabling reliable operation up to +150 °C junction temperature in properly laid-out PCBs with 5.0 mm × 5.0 mm copper pads per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - Maximum continuous reverse operating voltage before clamping begins; sets safe DC rail margin for 48 V systems. |
| VBR (min/max) | 71.1 V / 78.6 V at 1 mA - Confirmed breakdown range ensures predictable turn-on without premature conduction. |
| VC @ IPPM | 103 V at 5.8 A - Clamping voltage defines worst-case stress on protected ICs during 10/1000 µs surge events. |
| PPPM | 600 W - Peak pulse power handling capacity per IEEE C62.35 standard; validates surge immunity level. |
| IPPM | 5.8 A - Peak surge current supported at rated clamping voltage; determines minimum trace width and fuse coordination. |
| TJ max | +150 °C - Maximum junction temperature enables use in under-hood automotive and high-ambient industrial environments. |
| AEC-Q101 | Qualified - Certified for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode identified by band marking; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VREV > VBR. |
| Anode (unbanded end) | Reference node | Typically tied to system ground or lower-potential rail; completes clamping path during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Validates compliance with IEC 61000-4-5 Level 3 (1 kV surge) on 48 V supply rails with appropriate series impedance. |
| AEC-Q101 qualified (HE3 suffix) | Enables drop-in use in automotive powertrain and body control modules without additional qualification effort. |
| Clamping ratio (VC/VBR) ≈ 1.33 | Indicates tight voltage control during surge-lower than typical 1.4–1.6 ratios-reducing stress on downstream MOSFETs or regulators. |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free assembly without moisture sensitivity concerns or baking requirements. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure in harsh environments. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 48 V battery-supplied microcontrollers and CAN transceivers in ADAS domain controllers from load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between VBAT and ground, responding within <1 ns to suppress spikes exceeding 64 V. Use Value: Limits voltage seen by downstream LDOs and MCU I/O to ≤103 V during 600 W surges, preventing latch-up and gate oxide damage. |
Use Scenario: Shielding analog outputs (e.g., 4–20 mA current loops) of pressure sensors in factory automation systems from ESD and cable discharge events. IC Role / Device Role / Timing Role: Series-connected TVS on signal line, with cathode toward protected IC, clamping reverse transients before they reach op-amp inputs. Use Value: Maintains signal integrity by limiting transient overshoot to 103 V while adding <0.5 pF capacitance-negligible at 1 kHz bandwidth. |
| Telecom DC Power Input Protection | Consumer USB-C Port VBUS Protection |
|
Use Scenario: Safeguarding PoE-powered switches and base station RF front-end supplies against lightning-induced common-mode surges on 48 V input lines. IC Role / Device Role / Timing Role: Primary unidirectional clamp on DC input rail, coordinated with upstream fuses and common-mode chokes per IEC 61000-4-5. Use Value: Absorbs 600 W surges without degradation, verified over 1000+ cycles at 0.01% duty cycle-ensuring multi-year field reliability. |
Use Scenario: Secondary overvoltage protection on USB-C VBUS lines in portable docking stations exposed to hot-plug and adapter fault conditions. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after primary buck converter, clamping faults above 64 V before reaching USB PD controller. Use Value: Prevents catastrophic failure of USB PD ICs during 20 V adapter misapplication, with 1.0 µA leakage preserving standby current budget. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64AHM3/52 | Halogen-free, RoHS-compliant variant with identical electrical specs and AEC-Q101 qualification. | No functional difference; selected when halogen-free material compliance is mandated by OEM or regional regulations. | Choose SMBJ64AHM3/52 if halogen-free bill-of-materials is required; otherwise SMBJ64AHE3/52 offers standard RoHS compliance. |
| SMAJ64A-E3/52 | Lower 400 W PPPM, higher VC = 103 V @ 4.2 A, SMA (DO-214AC) package with smaller footprint and lower thermal mass. | Suitable for space-constrained consumer designs with lower surge immunity requirements (IEC 61000-4-2 Level 4 only). | Select SMAJ64A-E3/52 only for cost-sensitive, non-automotive applications where 400 W rating suffices and PCB area is critical. |
Compared with SMBJ64AHM3/52, SMBJ64AHE3/52 provides identical protection performance with standard RoHS compliance; versus SMAJ64A-E3/52, it delivers 50% higher surge power handling and superior thermal robustness-critical for automotive and industrial deployments.
Availability
SMBJ64AHE3/52 is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLC I/O modules, and telecom DC power inputs requiring stable component supply, AEC-Q101 assurance, and consistent 600 W surge capability across production batches.
Supply support for SMBJ64AHE3/52 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, precision, and application-specific optimization.
The SMBJ series is engineered for high-energy transient suppression in automotive, industrial, and telecom infrastructure-delivering AEC-Q101-qualified robustness, tight clamping, and proven field longevity in harsh electrical environments.
FAQ
What is the clamping voltage of SMBJ64AHE3/52 and how is it measured?
The SMBJ64AHE3/52 has a maximum clamping voltage (VC) of 103 V, measured at a peak pulse current (IPPM) of 5.8 A using a standardized 10/1000 µs double-exponential surge waveform. This value is guaranteed per Vishay's datasheet Document Number 88392 and reflects worst-case voltage imposed on protected circuitry during surge events-critical for validating downstream IC survivability.
Is SMBJ64AHE3/52 suitable for automotive applications?
Yes, SMBJ64AHE3/52 is AEC-Q101 qualified, as confirmed by the "HE3" suffix and Vishay documentation. It meets automotive reliability requirements including temperature cycling, high-temperature reverse bias, and ESD testing-making it suitable for engine control units, body electronics, and ADAS modules where sustained operation up to +150 °C and surge immunity are mandatory.
How does the SMBJ64AHE3/52 differ from bidirectional variants like SMBJ64CA?
SMBJ64AHE3/52 is unidirectional, with polarity marked by a cathode band and intended for DC rail protection where current flows in one direction. In contrast, SMBJ64CA is bidirectional-lacking polarity marking-and used in AC-coupled or differential signal paths. Their VBR and VC values differ: SMBJ64CA has symmetric breakdown in both directions, while SMBJ64AHE3/52 only clamps in reverse bias.
What is the thermal resistance of SMBJ64AHE3/52 and why does it matter?
The SMBJ64AHE3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead (RθJL) of 20 °C/W. These values determine how effectively heat from surge dissipation transfers to the PCB and ambient air-directly impacting safe operating duration during repetitive surges and long-term reliability in enclosed, high-ambient environments.
Can SMBJ64AHE3/52 be used in place of SMBJ60AHE3/52?
No-SMBJ64AHE3/52 and SMBJ60AHE3/52 have different standoff voltages (64 V vs. 60 V) and breakdown ranges (71.1–78.6 V vs. 66.7–73.7 V), resulting in distinct clamping behavior and system margin. Substitution requires revalidation of surge coordination, especially in 48 V systems where 4 V difference affects headroom for ripple and tolerance stack-up.
SMBJ64AHE3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- 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)
SMBJ64AHE3/52 FAQ
1.How can I place an order for SMBJ64AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ64AHE3/52 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 SMBJ64AHE3/52 reliable?
The price and inventory of SMBJ64AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ64AHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ64AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ64AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ64AHE3/52?
SMBJ64AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ64AHE3/52 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 SMBJ64AHE3/52?
For technical support, including SMBJ64AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ64AHE3/52 requirements.
6.How does Aetrix verify that SMBJ64AHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ64AHE3/52 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 SMBJ64AHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ64AHE3/52?
All SMBJ64AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ64AHE3/52, 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 SMBJ64AHE3/52 part is unused and in its original packaging.
Return procedure for SMBJ64AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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