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Vishay General Semiconductor - Diodes Division SMCJ64AHM3/I
- Part No.:
- SMCJ64AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ64AHM3/I.pdf
- Description:
- TVS DIODE 64VWM 103VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,320
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Product details
Overview
SMCJ64AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, featuring 64 V stand-off voltage (VWM), 71.1–78.6 V breakdown voltage (VBR at 1 mA), 1500 W peak pulse power (10/1000 μs), and clamping voltage of 103 V at 14.6 A peak surge current - deployed for robust overvoltage protection on DC power rails and signal lines in automotive ECUs and industrial motor drives.
For engineers reviewing the SMCJ64AHM3/I datasheet, SMCJ64AHM3/I pinout, SMCJ64AHM3/I application, or SMCJ64AHM3/I equivalent, key selection criteria include its AEC-Q101 qualification, halogen-free RoHS-compliant HM3 suffix, 150 °C max junction temperature, low incremental surge resistance, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This TVS diode operates as a unidirectional clamping device, leveraging a glass-passivated silicon junction to achieve sub-nanosecond response time and stable clamping under repetitive transients. Its design targets fast energy diversion during ESD events (IEC 61000-4-2), inductive switching spikes (e.g., relay/coil turn-off), and lightning-induced surges (IEC 61000-4-5).
The SMCJ64AHM3/I is rated for 200 A non-repetitive forward surge current (8.3 ms half-sine), exhibits 0.057 %/°C VBR temperature coefficient, and maintains ≤1.0 μA reverse leakage at 64 V - enabling reliable operation across -55 °C to +150 °C ambient without thermal runaway in high-reliability power supply front-ends.
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 threshold across production lots. |
| VC @ IPPM | 103 V at 14.6 A - Clamping voltage limits downstream IC stress during 1500 W transient events. |
| PPPM | 1500 W (10/1000 μs waveform) - Peak surge power handling capacity validated per ANSI/IEEE C62.35. |
| TJ max | +150 °C - Enables use in under-hood automotive environments and enclosed industrial enclosures. |
| Package | SMC (DO-214AB) - Standardized 2-pin surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height. |
| AEC-Q101 | Qualified - Meets stress test requirements for automotive electronic components per JESD22-A108. |
Pinout & Package
SMCJ64AHM3/I uses the standard SMC (DO-214AB) package: two-terminal, unidirectional configuration with cathode indicated by a band on the body. The device mounts directly onto PCB copper pads (minimum 8.0 mm × 8.0 mm per terminal) and features matte tin-plated leads compliant with J-STD-002 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to system ground or return path; defines clamping reference for positive transients on cathode side. |
| Cathode | Protected line input | Connected to the line being protected (e.g., 48 V rail); conducts surge current to anode when VAK exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free & RoHS-compliant | HM3 suffix confirms compliance with JEDEC JS709E and EU RoHS Directive 2011/65/EU - required for automotive Tier-1 supply chains. |
| Low incremental surge resistance | Enables tighter clamping (VC − VBR = 31.9 V) and reduced let-through energy versus higher-Rdyn alternatives. |
| MSL Level 1 rating | Unlimited floor life at ≤30 °C/60 % RH - eliminates bake requirements prior to reflow assembly. |
| Glass passivated junction | Provides stable leakage performance (<1.0 μA at VWM) and long-term reliability under thermal cycling. |
| Automated placement compatible | Standard SMC outline and lead coplanarity <0.15 mm support high-yield pick-and-place at >25,000 UPH. |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting 48 V battery-fed control modules in ADAS domain controllers against load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between battery input and upstream DC/DC converter input. Use Value: Limits voltage to ≤103 V during 1500 W surges, preventing damage to 65 V-rated MOSFETs and gate drivers in power stage. | Use Scenario: Safeguarding 24 V digital input channels of programmable logic controllers exposed to field-wiring inductive kickback. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected across input terminals to shunt relay coil energy away from optocoupler inputs. Use Value: Maintains <1.0 μA leakage at 24 V nominal, ensuring no false triggering while clamping 103 V spikes within nanoseconds. |
| Telecom DC Power Feeds | Motor Drive Gate Driver Protection |
Use Scenario: Securing -48 V telecom rectifier outputs against lightning-induced common-mode surges entering central office equipment. IC Role / Device Role / Timing Role: Unidirectional TVS mounted on output bus with cathode tied to -48 V rail and anode to system ground. Use Value: Withstands 200 A 8.3 ms surge (IFSM), surviving repeated lightning strikes without degradation in base station power supplies. | Use Scenario: Shielding isolated gate driver ICs in 3-phase inverter stacks from Miller-induced dv/dt coupling and shoot-through transients. IC Role / Device Role / Timing Role: Local clamping device across gate-to-source of high-side SiC MOSFETs, referenced to driver ground. Use Value: 0.057 %/°C VBR tempco ensures stable clamping threshold across -40 °C to +125 °C junction range during dynamic motor loads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64AHE3/A | Lower PPPM (600 W), SMB (DO-214AA) package, same VWM/VBR, non-AEC-Q101 | Not qualified for automotive under-hood use; limited to commercial-grade industrial or consumer power rails | Select when cost sensitivity outweighs surge margin and automotive qualification is unnecessary. |
| 1.5KE68A | Through-hole DO-201 package, 1500 W rating, 68 V VWM, no AEC-Q101 or halogen-free certification | Requires wave soldering; incompatible with high-density SMT layouts and automated assembly lines | Choose only for legacy through-hole designs where board real estate and assembly process preclude SMC packages. |
Compared with SMBJ64AHE3/A and 1.5KE68A, the SMCJ64AHM3/I delivers higher surge robustness in a smaller footprint, full automotive qualification, and halogen-free compliance - making it the preferred choice for new SMT-based automotive and industrial designs requiring long-term supply stability and regulatory alignment.
Availability
SMCJ64AHM3/I is available at Aetrix Electronics and suitable for automotive ECU power management, industrial PLC input conditioning, and telecom rectifier protection requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for SMCJ64AHM3/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 SMCJ series was developed specifically for high-energy transient suppression in automotive, industrial, and telecom infrastructure - balancing clamping precision, surge endurance, and manufacturability in surface-mount formats.
FAQ
What is the maximum clamping voltage of the SMCJ64AHM3/I under a 1500 W transient?
The SMCJ64AHM3/I clamps to 103 V at its rated peak pulse current of 14.6 A (10/1000 μs waveform). This value is measured and guaranteed per the Vishay datasheet (Document Number: 88394, Rev. 09-Jan-2024) and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The SMCJ64AHM3/I achieves this with low dynamic impedance, minimizing let-through energy to downstream components.
Is the SMCJ64AHM3/I suitable for automotive applications?
Yes, the SMCJ64AHM3/I is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction - meeting critical requirements for automotive electronics including engine control units, ADAS sensors, and body control modules. Its -55 °C to +150 °C operating range and MSL Level 1 rating further validate suitability for under-hood and chassis-mounted deployments. The SMCJ64AHM3/I is explicitly listed in Vishay's AEC-Q101 qualified product matrix.
How does the SMCJ64AHM3/I differ from the SMCJ64A-E3/57T variant?
The SMCJ64AHM3/I differs from SMCJ64A-E3/57T in three key aspects: (1) HM3 denotes halogen-free and RoHS-compliant construction, whereas E3 is RoHS-compliant but not halogen-free; (2) the /I suffix indicates 13-inch tape-and-reel packaging (3500 units), versus /57T's 7-inch reel (850 units); (3) HM3 parts undergo additional AEC-Q101 stress testing, while E3 is commercial-grade only. Both share identical electrical specs and SMC package.
What is the thermal resistance of the SMCJ64AHM3/I, and how does it affect layout?
The SMCJ64AHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on minimum recommended 8.0 mm × 8.0 mm copper pads per terminal. This value assumes no external heatsinking; designers must allocate sufficient copper area to maintain TJ ≤ 150 °C under sustained power dissipation. For high-duty-cycle transients, increasing pad size or adding internal ground planes reduces RθJA and improves surge survivability. The SMCJ64AHM3/I's RθJL of 15 °C/W supports localized thermal relief via direct lead conduction.
Can the SMCJ64AHM3/I be used in bidirectional configurations?
No, the SMCJ64AHM3/I is a unidirectional TVS diode, identifiable by its cathode band marking and specified parameters (e.g., IFSM = 200 A, VF = 3.5 V at 100 A). Bidirectional variants carry the "CA" suffix (e.g., SMCJ64CA) and lack forward surge ratings. Using the SMCJ64AHM3/I in reverse-biased AC applications would result in unintended conduction and failure. For bidirectional protection, select the SMCJ64CAHM3/I or equivalent.
SMCJ64AHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- 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):
- 14.6A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMC)
SMCJ64AHM3/I FAQ
1.How can I place an order for SMCJ64AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ64AHM3/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 SMCJ64AHM3/I reliable?
The price and inventory of SMCJ64AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ64AHM3/I is usually 5 days.
3.What payment methods are accepted for SMCJ64AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ64AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ64AHM3/I?
SMCJ64AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ64AHM3/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 SMCJ64AHM3/I?
For technical support, including SMCJ64AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ64AHM3/I requirements.
6.How does Aetrix verify that SMCJ64AHM3/I is sourced from the original manufacturer or authorized distributors?
All SMCJ64AHM3/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 SMCJ64AHM3/I meets industry standards.
7.What is the process for return or replacement of SMCJ64AHM3/I?
All SMCJ64AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ64AHM3/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 SMCJ64AHM3/I part is unused and in its original packaging.
Return procedure for SMCJ64AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ64AHM3/I Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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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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