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Vishay General Semiconductor - Diodes Division SMBJ64CAHM3_A/I
- Part No.:
- SMBJ64CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ64CAHM3_A/I.pdf
- Description:
- TVS DIODE 64VWM 103VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,593
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Product details
Overview
SMBJ64CAHM3_A/I from Vishay General Semiconductor is a bidirectional 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 SMBJ64CAHM3_A/I datasheet, SMBJ64CAHM3_A/I pinout, SMBJ64CAHM3_A/I application, or SMBJ64CAHM3_A/I equivalent, this device is selected for robust ESD and surge protection where bidirectional clamping, low leakage (<1 µA at VWM), AEC-Q101 qualification, halogen-free RoHS compliance, and MSL Level 1 reflow capability are required.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping performance regardless of transient polarity. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns), while the low incremental surge resistance enables effective energy diversion during lightning-induced or inductive-switching surges.
The device is rated for continuous operation from −55 °C to +150 °C junction temperature, with thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead). Its 1.0 mm² copper pad layout per terminal meets JEDEC-standard derating curves for repetitive 10/1000 µs pulses at 0.01% duty cycle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - Maximum continuous reverse operating voltage before significant leakage; defines safe working margin below clamping threshold. |
| VBR (min/max) | 71.1 V / 78.6 V at 1 mA - Confirmed breakdown range ensuring reliable turn-on during overvoltage events without premature conduction. |
| VC @ IPPM | 103 V at 5.8 A - Clamped voltage seen by protected circuit during full-rated 600 W transient; determines downstream component stress. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 µs waveform; validates suitability for IEC 61000-4-5 Level 3/4 surge immunity. |
| ID @ VWM | <1 µA - Reverse leakage current at stand-off voltage; ensures minimal power loss and signal integrity in high-impedance circuits. |
| TJ max. | +150 °C - Maximum junction temperature; supports operation in under-hood automotive and industrial environments. |
| 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), bidirectional configuration - no polarity marking; symmetrical terminals with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional current path | Either terminal serves as anode or cathode depending on transient polarity; enables clamping on both positive and negative excursions without external orientation constraints. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Validates compliance with IEC 61000-4-5 surge immunity up to 4 kV line-to-line in industrial equipment designs. |
| AEC-Q101 qualified (HM3 suffix) | Confirms reliability for automotive powertrain and body electronics applications requiring extended temperature cycling and humidity testing. |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and IPC-1752A material declarations; supports green manufacturing and end-of-life recycling requirements. |
| MSL Level 1 (260 °C peak) | Enables single-pass lead-free reflow without moisture-induced delamination; eliminates pre-bake requirement in SMT assembly. |
| Low clamping ratio (VC/VBR ≈ 1.34) | Minimizes overvoltage exposure to protected ICs - critical for 3.3 V/5 V logic and automotive microcontrollers with tight absolute maximum ratings. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of gate drivers and current-sense amplifiers against inductive kickback from 24 V DC motor switching. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across MOSFET drain-source or op-amp inputs to limit transient overshoot. Use Value: Limits voltage spikes to ≤103 V during 5.8 A surge events, preventing latch-up or oxide breakdown in 40 V-rated silicon. |
Use Scenario: Surge suppression on LIN bus lines and power inputs of door module ECUs exposed to load dump and jump-start conditions. IC Role / Device Role / Timing Role: Primary TVS on 12 V supply rail and bidirectional data line, absorbing 600 W transients within nanoseconds. Use Value: Maintains <1 µA leakage at 64 V stand-off to avoid battery drain, while AEC-Q101 qualification ensures 15-year field reliability. |
| Telecom Power Supply Inputs | Industrial Sensor Signal Conditioning |
|
Use Scenario: Input-stage protection for AC/DC adapters and PoE injectors subjected to lightning-induced surges on primary-side DC rails. IC Role / Device Role / Timing Role: First-line transient suppressor between input filter capacitor and upstream rectifier or controller IC. Use Value: Clamps 10/1000 µs surges to 103 V with 600 W capability, preserving upstream fuse coordination and avoiding unnecessary shutdown. |
Use Scenario: Protection of analog front-end inputs (e.g., 4–20 mA loop receivers, thermocouple amplifiers) against ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF typical) bidirectional clamp placed directly at connector interface before signal conditioning stage. Use Value: Prevents damage to precision op-amps and ADCs with ±103 V clamping envelope while adding negligible signal distortion due to symmetrical response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64CAHE3_A/I | Same electrical specs, but RoHS-compliant without halogen-free certification; uses standard SnPb-free matte tin plating. | Approved for commercial/industrial use only; not qualified to AEC-Q101 for automotive deployment. | Select when halogen-free requirement is waived and automotive qualification is unnecessary. |
| SMAJ64CAHM3_A/I | Lower 400 W PPPM, same VWM/VC; smaller SMA (DO-214AC) package with reduced thermal mass and higher RθJA (140 °C/W). | Suitable for space-constrained PCBs with lower surge threat levels (e.g., IEC 61000-4-2 ESD only); not recommended for IEC 61000-4-5 line surges. | Choose only if board area is critical and peak surge energy does not exceed 400 W. |
Compared with SMBJ64CAHM3_A/I, the HE3 variant lacks halogen-free status and automotive qualification, while the SMAJ64CAHM3_A/I offers reduced surge capacity and inferior thermal performance - making SMBJ64CAHM3_A/I the optimal choice for AEC-Q101-compliant, high-energy industrial and automotive systems.
Availability
SMBJ64CAHM3_A/I is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom power supply inputs, and industrial sensor signal conditioning requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SMBJ64CAHM3_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, 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 applications where robustness, AEC-Q101 compliance, and precise clamping performance are mandatory.
FAQ
What is the clamping voltage of SMBJ64CAHM3_A/I at its rated peak pulse current?
The SMBJ64CAHM3_A/I has a maximum clamping voltage (VC) of 103 V at 5.8 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during full-rated surge events. The SMBJ64CAHM3_A/I maintains this clamping performance bidirectionally, ensuring consistent protection regardless of transient polarity.
Is SMBJ64CAHM3_A/I qualified for automotive applications?
Yes, SMBJ64CAHM3_A/I is AEC-Q101 qualified, as confirmed by the "HM3" suffix indicating halogen-free, RoHS-compliant, and automotive-grade construction. It undergoes stress testing including temperature cycling, humidity bias, and mechanical shock per AEC-Q101 Rev D, making it suitable for under-hood and chassis-mounted automotive electronics such as body control modules and power distribution units.
What is the difference between SMBJ64CAHM3_A/I and SMBJ64CAHE3_A/I?
The SMBJ64CAHM3_A/I and SMBJ64CAHE3_A/I share identical electrical specifications (VWM, VBR, VC, PPPM) and packaging, but differ in material compliance: HM3 denotes halogen-free construction meeting IEC 61249-2-21, while HE3 is RoHS-compliant without halogen-free certification. Only HM3 carries AEC-Q101 qualification; HE3 is rated for commercial/industrial use only.
Does SMBJ64CAHM3_A/I require special PCB layout considerations?
Yes - to achieve rated 600 W pulse power, SMBJ64CAHM3_A/I must be mounted on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, per Vishay's recommended pad layout. Smaller pads increase thermal resistance and reduce surge capability. Additionally, short, low-inductance traces to ground/power planes are essential to preserve sub-nanosecond response time and prevent voltage overshoot during fast transients.
What is the maximum operating temperature for SMBJ64CAHM3_A/I?
The SMBJ64CAHM3_A/I has a maximum junction temperature (TJ) of +150 °C and operates across −55 °C to +150 °C. Its thermal resistance is 100 °C/W (junction-to-ambient) on standard FR-4 with recommended pad layout, enabling reliable function in engine bay, industrial PLC, and telecom base station environments where ambient temperatures exceed 85 °C.
SMBJ64CAHM3_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:
- -
- Bidirectional Channels:
- 1
- 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)
SMBJ64CAHM3_A/I FAQ
1.How can I place an order for SMBJ64CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ64CAHM3_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 SMBJ64CAHM3_A/I reliable?
The price and inventory of SMBJ64CAHM3_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 SMBJ64CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMBJ64CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ64CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ64CAHM3_A/I?
SMBJ64CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ64CAHM3_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 SMBJ64CAHM3_A/I?
For technical support, including SMBJ64CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ64CAHM3_A/I requirements.
6.How does Aetrix verify that SMBJ64CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMBJ64CAHM3_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 SMBJ64CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMBJ64CAHM3_A/I?
All SMBJ64CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ64CAHM3_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 SMBJ64CAHM3_A/I part is unused and in its original packaging.
Return procedure for SMBJ64CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ64CAHM3_A/I Tags
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Toshiba Semiconductor and Storage
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