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Vishay General Semiconductor - Diodes Division SMBJ64AHE3_A/I
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- Part No.:
- SMBJ64AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ64AHE3_A/I.pdf
- Description:
- TVS DIODE 64VWM 103VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,440
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Product details
Overview
SMBJ64AHE3_A/I 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 - used to protect MOSFETs, ICs, and sensor interfaces in industrial motor drives.
For engineers reviewing the SMBJ64AHE3_A/I datasheet, SMBJ64AHE3_A/I pinout, SMBJ64AHE3_A/I application, or SMBJ64AHE3_A/I equivalent, this device is selected for robust overvoltage protection where fast response (<1 ps), low clamping ratio (VC/VBR ≈ 1.35), AEC-Q101 qualification, and RoHS-compliant matte tin terminations are required in automotive and industrial power supply designs.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 µA leakage at 64 V), then rapidly avalanches below 78.6 V to divert surge current away from downstream circuitry. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repetitive transients.
Thermal performance is defined by RθJA = 100 °C/W (on 0.2" × 0.2" copper pads) and TJ(max) = +150 °C, enabling operation in ambient temperatures up to +125 °C when derated per Fig. 2. The cathode band marking identifies polarity, and the device meets MSL Level 1 per J-STD-020 with 260 °C reflow peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - maximum continuous reverse operating voltage before significant leakage; sets upper limit for protected line's nominal DC bias. |
| VBR (min/max) | 71.1 V / 78.6 V at IT = 1 mA - guaranteed avalanche onset range; determines minimum clamping threshold under surge. |
| VC @ IPPM | 103 V at 5.8 A (10/1000 µs) - maximum voltage seen by protected circuit during worst-case surge; defines system overvoltage margin. |
| PPPM | 600 W - peak transient power handling capability; validates suitability for IEC 61000-4-5 Level 4 (4 kV) surge events. |
| IFSM | 100 A - non-repetitive forward surge rating (8.3 ms half-sine); supports protection of rectifier stages or DC bus inputs. |
| TJ(max) | +150 °C - maximum junction temperature; enables use in under-hood automotive modules and sealed industrial enclosures. |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height; compatible with automated pick-and-place. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Polarity indicated by cathode band; anode and cathode terminals are axially oriented along the body length.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node; completes conduction path during reverse-biased avalanche. |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 64 V rail); avalanche initiates here when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for engine control units and ADAS power rails. |
| 600 W peak pulse power (10/1000 µs) | Withstands IEC 61000-4-5 combination wave surges up to 4 kV without degradation; eliminates need for external series impedance in many cases. |
| Clamping voltage ≤103 V at 5.8 A | Provides >20 V margin below typical 120 VDC industrial bus overvoltage limits, ensuring downstream ICs remain within absolute maximum ratings. |
| MSL Level 1 moisture sensitivity | Enables standard SMT reflow without baking; reduces manufacturing overhead and avoids moisture-induced popcorning during assembly. |
| Glass-passivated junction | Delivers stable VBR tolerance and low leakage drift over 10+ years in harsh environments - critical for medical and railway applications. |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
|
Use Scenario: Protecting 64 V battery-fed ECUs against load dump transients (ISO 16750-2) and alternator switching spikes. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed directly across power input pins of microcontrollers and CAN transceivers. Use Value: Limits voltage excursion to ≤103 V during 100 A/100 ms load dump events, preventing latch-up or gate oxide rupture in 65 V-rated power management ICs. |
Use Scenario: Safeguarding 24–64 V digital input modules in programmable logic controllers exposed to inductive kickback from solenoid valves. IC Role / Device Role / Timing Role: Primary overvoltage clamp on field-side signal conditioning front-end, upstream of optocouplers and level shifters. Use Value: Responds in <1 ps to clamp 1 kV/2 Ω surge waveforms to safe levels, preserving isolation integrity and extending mean time between failures (MTBF). |
| Telecom DC Power Interface | Motor Drive Gate Driver Supply |
|
Use Scenario: Securing -48 V telecom rectifier outputs against lightning-induced surges entering central office equipment. IC Role / Device Role / Timing Role: Unidirectional TVS mounted at power entry point, coordinated with upstream MOVs and downstream LC filters. Use Value: Maintains <1 µA leakage at -48 V nominal, minimizing standby power loss while delivering 600 W clamping during 10/1000 µs transients. |
Use Scenario: Shielding isolated gate driver ICs (e.g., SiC MOSFET drivers) from Miller-induced voltage spikes on floating high-side supplies. IC Role / Device Role / Timing Role: Localized clamp on 15–20 V auxiliary supply rail feeding gate driver bias networks. Use Value: Achieves 103 V clamping at 5.8 A with <20 ns response, preventing false turn-on and shoot-through in half-bridge configurations. |
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_A/I | 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 compliance is mandated by OEM environmental policy (e.g., VW 80101). | Drop-in replacement where halogen-free materials are contractually required; no layout or test changes needed. |
| SMAJ64AHE3/A | Same VWM, VBR, and VC, but lower PPPM = 400 W and higher RθJA = 140 °C/W due to smaller SMA (DO-214AC) package. | Not recommended for 600 W surge environments; suitable only for space-constrained designs with lower energy threats (e.g., IEC 61000-4-4). | Select only if board area is critical and surge threat level is confirmed ≤400 W; requires thermal validation due to reduced heat dissipation. |
Compared with SMBJ64AHE3_A/I, the HM3 variant offers identical protection performance with halogen-free construction, while the SMAJ64AHE3/A trades 33 % lower surge capacity and higher thermal resistance for 30 % smaller footprint - making the SMBJ64AHE3_A/I optimal for automotive and industrial applications demanding full 600 W immunity.
Availability
SMBJ64AHE3_A/I is available at Aetrix Electronics and suitable for automotive ECU power rails, industrial PLC input modules, telecom DC distribution systems, and motor drive gate driver supplies requiring stable component supply across multi-year production cycles.
Supply support for SMBJ64AHE3_A/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 and application-specific performance.
The SMBJ series is engineered for high-energy transient suppression in automotive, industrial, and telecom infrastructure, combining AEC-Q101 qualification, precise clamping, and rugged packaging for mission-critical overvoltage defense.
FAQ
What is the maximum clamping voltage of SMBJ64AHE3_A/I under a 10/1000 µs surge?
The SMBJ64AHE3_A/I 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 guarantees that protected circuitry will not experience voltages exceeding 103 V during standardized surge events - a key parameter for validating compliance with IEC 61000-4-5 Level 4 requirements. The SMBJ64AHE3_A/I achieves this with minimal overshoot due to its low incremental surge resistance.
Is SMBJ64AHE3_A/I qualified for automotive applications?
Yes, SMBJ64AHE3_A/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation in the SMBJ5.0A–SMBJ188A datasheet (Rev. 09-Jan-2024, Doc. #88392). This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and accelerated life testing - validating its use in engine control units, body electronics, and ADAS power domains. The SMBJ64AHE3_A/I also meets MSL Level 1 and supports lead-free reflow up to 260 °C.
What does the "HE3" suffix indicate in SMBJ64AHE3_A/I?
The "HE3" suffix in SMBJ64AHE3_A/I denotes a RoHS-compliant, AEC-Q101-qualified version with matte tin-plated leads and JESD 201 Class 2 whisker resistance. It distinguishes this variant from commercial-grade "E3" (RoHS only) and halogen-free "HM3" versions. The "A/I" further specifies tape-and-reel packaging: "A" = 7" reel, "I" = 3200 units per reel. All HE3 variants share identical electrical characteristics and SMB (DO-214AA) mechanical form factor with the base SMBJ64A series.
How does SMBJ64AHE3_A/I compare to bidirectional TVS diodes like SMBJ64CA?
SMBJ64AHE3_A/I is unidirectional and intended for DC line protection where polarity is fixed (e.g., +64 V rail to ground), offering lower leakage (<1 µA at 64 V) and higher surge current capability in one direction. In contrast, SMBJ64CA is bidirectional, suited for AC or floating signal lines, but exhibits doubled leakage (≤2 µA) and symmetric clamping in both polarities. The SMBJ64AHE3_A/I cannot replace SMBJ64CA in AC-coupled applications without circuit redesign, as its cathode band enforces strict polarity alignment.
What is the thermal resistance and maximum operating temperature of SMBJ64AHE3_A/I?
The SMBJ64AHE3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads per JEDEC standards, and a maximum junction temperature (TJ(max)) of +150 °C. This allows continuous operation at ambient temperatures up to +125 °C when derated per Figure 2 in the datasheet. Its RθJL = 20 °C/W enables effective heat transfer to PCB copper, supporting reliable performance in sealed enclosures and under-hood automotive locations where the SMBJ64AHE3_A/I is commonly deployed.
SMBJ64AHE3_A/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:
- Obsolete
- 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_A/I FAQ
1.How can I place an order for SMBJ64AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ64AHE3_A/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_A/I reliable?
The price and inventory of SMBJ64AHE3_A/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_A/I is usually 5 days.
3.What payment methods are accepted for SMBJ64AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ64AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ64AHE3_A/I?
SMBJ64AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ64AHE3_A/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_A/I?
For technical support, including SMBJ64AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ64AHE3_A/I requirements.
6.How does Aetrix verify that SMBJ64AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMBJ64AHE3_A/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_A/I meets industry standards.
7.What is the process for return or replacement of SMBJ64AHE3_A/I?
All SMBJ64AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ64AHE3_A/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_A/I part is unused and in its original packaging.
Return procedure for SMBJ64AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ64AHE3_A/I Tags
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