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Vishay General Semiconductor - Diodes Division SMBJ64AHM3/I
- Part No.:
- SMBJ64AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ64AHM3/I.pdf
- Description:
- TVS DIODE 64VWM 103VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,998
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Product details
Overview
SMBJ64AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in 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 industrial motor drives to safeguard MOSFET gate drivers against inductive switching transients.
For engineers reviewing the SMBJ64AHM3/I datasheet, SMBJ64AHM3/I pinout, SMBJ64AHM3/I application, or SMBJ64AHM3/I equivalent, this page delivers verified package mapping (SMB/DO-214AA), confirmed unidirectional polarity with cathode band marking, thermal resistance (RθJA = 100 °C/W), AEC-Q101 qualification status, and real-world clamping performance under standardized surge conditions.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR, it avalanches into low-impedance conduction to divert transient energy away from downstream ICs. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 µA at VWM), while the 100 A IFSM rating supports high-energy single-event surges like 8.3 ms half-sine waves.
The device is rated for -55 °C to +150 °C operating junction temperature, meets MSL Level 1 per J-STD-020 (peak reflow 260 °C), and uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. The HM3 suffix confirms halogen-free, RoHS-compliant, and AEC-Q101 qualified construction - validated for automotive-grade reliability without derating penalties.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC/AC bias margin for protected circuitry. |
| VBR (min/max) | 71.1 V / 78.6 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on across temperature and unit variation. |
| VC @ IPPM | 103 V at 5.8 A - Clamped voltage during 10/1000 µs surge; determines maximum stress imposed on downstream components. |
| PPPM | 600 W - Peak pulse power handling capability; enables protection against IEC 61000-4-5 Level 4 surges (4 kV line-earth) when properly mounted. |
| IFSM | 100 A - Non-repetitive forward surge current rating; supports survival of high-current inductive kick events in relay or solenoid drive circuits. |
| TJ max. | +150 °C - Maximum junction temperature; allows operation in under-hood automotive or enclosed industrial enclosures without forced cooling. |
| RθJA | 100 °C/W - Thermal resistance junction-to-ambient on standard 0.2" × 0.2" copper pads; informs PCB thermal design for sustained power dissipation. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with cathode band marking on unidirectional variants. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H), with 1.52 mm lead spacing and matte tin-plated terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to lower-potential side of protected line; establishes polarity-dependent clamping direction. |
| Cathode (banded end) | Avalanche conduction node / Surge return path | Connected to higher-potential side (e.g., VCC rail or signal line); conducts transient current to ground or return path during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables protection against high-energy transients such as lightning-induced surges or inductive load switching in 24 V industrial systems. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including body control modules and powertrain subsystems requiring zero-failure reliability under thermal cycling and vibration. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns response), reducing stress on sensitive gate drivers and microcontrollers. |
| Halogen-free, RoHS-compliant construction | Meets EU Directive 2011/65/EU and IPC-1752A material declaration requirements for green manufacturing and end-of-life processing. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; simplifies SMT assembly in high-volume production environments. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of MOSFET gate driver ICs against voltage spikes generated by relay coil de-energization in PLC output stages. IC Role / Device Role / Timing Role: Shunt clamping device placed between gate driver output and ground, activated within nanoseconds of overvoltage detection. Use Value: Limits gate-source voltage to ≤103 V during 600 W surges, preventing oxide breakdown and ensuring >100,000-cycle reliability in factory automation equipment. |
Use Scenario: Input line protection for LIN bus transceivers exposed to load dump and jump-start transients in door module ECUs. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 12 V supply rail upstream of regulator, responding before internal LDO overvoltage protection triggers. Use Value: Maintains <1.0 µA leakage at 64 V nominal, minimizing standby current drain while clamping 103 V peaks - critical for battery-sensitive automotive modules. |
| Telecom Power Feeds | Consumer Appliance Control Boards |
Use Scenario: Secondary-side surge suppression on 48 V PoE-powered Ethernet switch ports subjected to induced lightning surges. IC Role / Device Role / Timing Role: Final-stage TVS on DC-DC converter output, coordinated with primary-side MOVs to distribute energy absorption. Use Value: Delivers 600 W pulse handling with 100 °C/W RθJA, enabling compact layout without heatsinks while meeting IEC 61000-4-5 Ed. 3 Class B immunity. |
Use Scenario: Input protection for microcontroller I/O pins connected to front-panel buttons exposed to ESD events during user interaction. IC Role / Device Role / Timing Role: Fast-response shunt element placed directly at connector entry point, with cathode tied to MCU VDD. Use Value: Achieves <10 ns response time and 103 V clamping, limiting ESD-induced latch-up risk in 3.3 V/5 V logic interfaces per IEC 61000-4-2 Level 4 (8 kV contact). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64AHE3/I | RoHS-compliant but not halogen-free; lacks AEC-Q101 qualification; same VWM, VBR, VC, and PPPM. | Approved for commercial/industrial use only; unsuitable for automotive under hood or safety-critical modules. | Select when halogen-free content or automotive qualification is not required and cost optimization is prioritized. |
| SMAJ64A-M3/5B | Lower PPPM (400 W), larger SMA package (DO-214AC), higher RθJA (140 °C/W); otherwise identical VWM/VBR/VC specs. | Better suited for space-constrained layouts where 600 W is unnecessary; less effective in thermally dense automotive PCBs. | Choose for legacy designs using SMA footprint or where 400 W surge margin suffices and board area permits larger case. |
Compared with SMBJ64AHM3/I, the SMBJ64AHE3/I omits halogen-free and AEC-Q101 compliance - reducing cost but excluding automotive deployment; the SMAJ64A-M3/5B trades 33 % lower surge power and inferior thermal performance for backward-compatible SMA mounting, limiting its use in high-reliability or thermally constrained applications.
Availability
SMBJ64AHM3/I is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom power feeds, and consumer appliance control boards requiring stable component supply across long-lifecycle programs.
Supply support for SMBJ64AHM3/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, rectifiers, MOSFETs, and protection devices 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 AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of SMBJ64AHM3/I at its rated peak pulse current?
The SMBJ64AHM3/I has a maximum clamping voltage (VC) of 103 V at 5.8 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ64AHM3/I maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C) without derating.
Is SMBJ64AHM3/I suitable for automotive applications?
Yes, SMBJ64AHM3/I is AEC-Q101 qualified and constructed with halogen-free, RoHS-compliant materials - making it suitable for automotive applications including body control modules, lighting drivers, and infotainment power supplies. Its 100 A IFSM rating and +150 °C TJ max. support under-hood deployment, and the HM3 suffix explicitly denotes automotive-grade qualification per the Vishay ordering matrix.
How does the SMBJ64AHM3/I differ from the SMBJ64A-E3/52 variant?
The SMBJ64AHM3/I differs from SMBJ64A-E3/52 in three key aspects: it uses halogen-free molding compound (vs. standard RoHS), carries AEC-Q101 qualification (vs. commercial grade only), and ships in 13" tape-and-reel (I-code) versus 7" (52-code). Electrically and thermally, both share identical VWM = 64 V, VBR = 71.1–78.6 V, VC = 103 V, and RθJA = 100 °C/W - confirming functional equivalence where automotive compliance is not required.
What is the thermal resistance of SMBJ64AHM3/I, and how does it affect PCB layout?
The SMBJ64AHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes standard FR-4 PCB construction and dictates minimum copper area needed to maintain TJ ≤ 150 °C during repetitive surges. For sustained 5 W dissipation, ≥250 mm² total copper per pad is recommended - underscoring the need for deliberate thermal pad design in high-duty-cycle applications.
Does SMBJ64AHM3/I have polarity markings, and how is it oriented on the PCB?
Yes, SMBJ64AHM3/I is unidirectional and features a visible cathode band at one end of the SMB (DO-214AA) package. During PCB placement, the banded end must connect to the higher-potential node (e.g., VCC, signal line, or PoE feed), while the anode connects to ground or return. Incorrect orientation renders the device non-functional for reverse-transient suppression - a critical check during layout verification and automated optical inspection (AOI).
SMBJ64AHM3/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:
- 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:
- 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)
SMBJ64AHM3/I FAQ
1.How can I place an order for SMBJ64AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ64AHM3/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 SMBJ64AHM3/I reliable?
The price and inventory of SMBJ64AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ64AHM3/I is usually 5 days.
3.What payment methods are accepted for SMBJ64AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ64AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ64AHM3/I?
SMBJ64AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ64AHM3/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 SMBJ64AHM3/I?
For technical support, including SMBJ64AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ64AHM3/I requirements.
6.How does Aetrix verify that SMBJ64AHM3/I is sourced from the original manufacturer or authorized distributors?
All SMBJ64AHM3/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 SMBJ64AHM3/I meets industry standards.
7.What is the process for return or replacement of SMBJ64AHM3/I?
All SMBJ64AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ64AHM3/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 SMBJ64AHM3/I part is unused and in its original packaging.
Return procedure for SMBJ64AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ64AHM3/I Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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