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Vishay General Semiconductor - Diodes Division SMBJ64AHM3/H
- Part No.:
- SMBJ64AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ64AHM3/H.pdf
- Description:
- TVS DIODE 64VWM 103VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,749
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Product details
Overview
SMBJ64AHM3/H 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 power supplies.
For engineers reviewing the SMBJ64AHM3/H datasheet, SMBJ64AHM3/H pinout, SMBJ64AHM3/H application, or SMBJ64AHM3/H equivalent, this page delivers verified electrical specs, thermal derating behavior, AEC-Q101 qualification status, halogen-free RoHS compliance, and real-world clamping performance under surge conditions - critical for automotive-grade ESD and lightning transient protection design.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its VBR threshold. Its low incremental surge resistance and fast response time (<1 ps) enable effective suppression of fast-rising transients induced by inductive switching or ESD events.
The device is rated for 150 °C maximum junction temperature, exhibits 0.105 %/°C temperature coefficient of VBR, and is characterized with 100 °C/W junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads - requiring careful PCB thermal management for repetitive surge duty cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - Maximum continuous reverse operating voltage before conduction begins; defines safe working margin below clamping threshold. |
| VBR (min/max) | 71.1 V / 78.6 V at 1 mA - Confirmed breakdown range ensures reliable triggering across temperature and process variation. |
| VC @ IPPM | 103 V at 5.8 A - Clamped voltage during 600 W 10/1000 µs surge; determines maximum stress imposed on protected downstream circuitry. |
| PPPM | 600 W - Peak pulse power handling capability with 0.01 % duty cycle; validates suitability for infrequent but high-energy transients. |
| IFSM | 100 A - Non-repetitive forward surge current rating (8.3 ms half-sine); supports robustness against accidental polarity reversal events. |
| TJ max. | 150 °C - Maximum junction temperature; sets upper limit for thermal design and derating curves in high-ambient environments. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with cathode band marking; compatible with automated pick-and-place and reflow soldering. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference node | Connected to lower-potential side (e.g., ground or return path); defines polarity-sensitive placement on PCB. |
| Cathode (banded end) | Clamping output / Surge current sink | Connected to protected line (e.g., 64 V rail); conducts surge current to anode during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Validated energy absorption capacity for lightning-induced surges per IEC 61000-4-5 Level 4 testing requirements. |
| AEC-Q101 qualified (HM3 suffix) | Qualified for automotive electronics per stress test standards including HTOL, TC, and ESD - enables use in ADAS and body control modules. |
| Halogen-free & RoHS-compliant | Meets JEDEC J-STD-020 MSL Level 1 and JESD201 Class 2 whisker resistance - supports lead-free manufacturing and environmental compliance. |
| Low clamping ratio (VC/VWM = 1.61) | Minimizes overvoltage overshoot during clamping; preserves margin for 75 V-rated components downstream of the protected node. |
| Fast response time (<1 ps) | Ensures clamping activation prior to damage onset in nanosecond-scale ESD events (IEC 61000-4-2 Contact ±8 kV). |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: 12 V/24 V battery-connected ECUs exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp transients up to ±120 V. Use Value: Limits voltage seen by MCU power supply inputs to ≤103 V during ISO 7637-2 Pulse 5a (load dump), preventing latch-up or permanent damage. |
Use Scenario: Analog sensor outputs (e.g., pressure, temperature) routed through long cables in factory automation. IC Role / Device Role / Timing Role: TVS mounted at connector interface to shunt ESD and inductive kickback before reaching ADC front-end. Use Value: Clamps 4 kV contact ESD per IEC 61000-4-2 to <103 V within <1 ps, preserving signal integrity and avoiding ADC saturation or reset. |
| Telecom DC Power Input Protection | Consumer Device USB Power Line Protection |
|
Use Scenario: -48 V telecom rectifier outputs feeding base station backplane circuits. IC Role / Device Role / Timing Role: Unidirectional TVS on negative rail to suppress positive-going surges from shared ground bounce or lightning coupling. Use Value: Withstands 600 W surges while maintaining VC ≤103 V, protecting PMICs and FPGAs rated for -55 V to -65 V absolute maximum ratings. |
Use Scenario: 5 V USB VBUS line in portable speakers or smart home hubs subject to hot-plug and cable ESD. IC Role / Device Role / Timing Role: TVS placed inline between USB connector and port controller to absorb ±8 kV ESD without disrupting enumeration. Use Value: Low leakage (<1 µA at 64 V) prevents standby current drain; fast response avoids data corruption during plug-in events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64AHE3/H | Same electrical specs, RoHS-compliant but not halogen-free; lacks AEC-Q101 qualification. | Suitable for commercial-grade industrial equipment where automotive reliability is not required. | Select when halogen-free content or automotive qualification is not mandated; lower cost alternative. |
| SMAJ64A-M3/5B | Lower 400 W PPPM, SMA package (smaller footprint, higher RθJA = 140 °C/W), same VWM/VC. | Better suited for space-constrained consumer PCBs with lower surge exposure profiles. | Choose only if board area is critical and surge threat level is limited to IEC 61000-4-5 Level 2 (400 W). |
Compared with SMBJ64AHM3/H, SMBJ64AHE3/H omits halogen-free and AEC-Q101 compliance but matches all electrical parameters, while SMAJ64A-M3/5B reduces surge capability and thermal performance due to smaller package - making SMBJ64AHM3/H the optimal choice for automotive and high-reliability industrial designs demanding full 600 W clamping and validated automotive qualification.
Availability
SMBJ64AHM3/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power systems, and consumer USB power protection requiring stable component supply and long-term lifecycle support.
Supply support for SMBJ64AHM3/H 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-energy transient suppression in harsh environments; SMBJ64AHM3/H specifically addresses automotive and industrial needs for AEC-Q101-qualified, halogen-free, 600 W-capable unidirectional TVS protection.
FAQ
What is the clamping voltage of SMBJ64AHM3/H at its rated peak pulse current?
The SMBJ64AHM3/H has a maximum clamping voltage (VC) of 103 V at 5.8 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ64AHM3/H maintains this clamping performance across its specified operating temperature range and is validated per Vishay's production test protocols.
Is SMBJ64AHM3/H qualified for automotive applications?
Yes, SMBJ64AHM3/H is AEC-Q101 qualified, as indicated by the "HM3" suffix per Vishay's ordering nomenclature. It undergoes stress testing including high-temperature operating life (HTOL), temperature cycling (TC), and ESD per JESD22-A114. This qualification confirms its suitability for automotive powertrain, body electronics, and ADAS subsystems where reliability under thermal and electrical stress is mandatory. The SMBJ64AHM3/H meets these requirements without derating.
What does the "HM3" suffix signify in SMBJ64AHM3/H?
The "HM3" suffix in SMBJ64AHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. Per Vishay's documentation, "H" indicates AEC-Q101 qualification, "M3" specifies halogen-free and RoHS-compliant materials, and the trailing "/H" refers to 7" tape-and-reel packaging (750 units per reel). This distinguishes SMBJ64AHM3/H from non-automotive variants like SMBJ64A-E3/H and ensures compliance with automotive supply chain material declarations.
How does SMBJ64AHM3/H compare to bidirectional TVS diodes like SMBJ64CA?
SMBJ64AHM3/H is unidirectional and intended for DC line protection with defined polarity (cathode to protected line), whereas SMBJ64CA is bidirectional and suitable for AC or floating signal lines. The SMBJ64AHM3/H offers lower leakage (<1 µA at 64 V) and higher surge robustness in one direction, while SMBJ64CA provides symmetrical clamping but with doubled leakage at low VWM. For 64 V DC rails, SMBJ64AHM3/H delivers superior performance and is the correct selection.
What is the thermal resistance and recommended pad layout for SMBJ64AHM3/H?
The SMBJ64AHM3/H 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, as specified in Vishay's datasheet. To maintain reliability under repetitive surges, designers must follow the recommended SMB (DO-214AA) mounting pad layout - including minimum copper area, thermal vias, and avoidance of solder mask over thermal pads. Derating above 25 °C ambient is required per Figure 2 in Document 88392.
SMBJ64AHM3/H 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/H FAQ
1.How can I place an order for SMBJ64AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ64AHM3/H 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/H reliable?
The price and inventory of SMBJ64AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ64AHM3/H is usually 5 days.
3.What payment methods are accepted for SMBJ64AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ64AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ64AHM3/H?
SMBJ64AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ64AHM3/H 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/H?
For technical support, including SMBJ64AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ64AHM3/H requirements.
6.How does Aetrix verify that SMBJ64AHM3/H is sourced from the original manufacturer or authorized distributors?
All SMBJ64AHM3/H 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/H meets industry standards.
7.What is the process for return or replacement of SMBJ64AHM3/H?
All SMBJ64AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ64AHM3/H, 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/H part is unused and in its original packaging.
Return procedure for SMBJ64AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ64AHM3/H Tags
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