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Vishay General Semiconductor - Diodes Division SMCJ64AHE3_A/I
- Part No.:
- SMCJ64AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ64AHE3_A/I.pdf
- Description:
- TVS DIODE 64VWM 103VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,326
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Product details
Overview
SMCJ64AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection. 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 14.6 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed to safeguard MOSFETs, ICs, and sensor signal lines in automotive power systems.
For engineers reviewing the SMCJ64AHE3_A/I datasheet, SMCJ64AHE3_A/I pinout, SMCJ64AHE3_A/I application, or SMCJ64AHE3_A/I equivalent, key selection criteria include clamping performance under 1500 W surges, AEC-Q101 qualification for automotive reliability, unidirectional polarity with cathode band marking, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This TVS diode operates as a fast-acting shunt protector, responding in <1 ps to transient overvoltages induced by inductive load switching or ESD events. Its glass-passivated junction ensures stable VBR and low incremental surge resistance, while the SMC package supports 260 °C lead-free reflow per J-STD-020 MSL Level 1.
The device is rated for -55 °C to +150 °C operating junction temperature, with thermal resistance RθJA = 75 °C/W and RθJL = 15 °C/W. It meets UL 497B recognition (QVGQ2) and complies with ANSI/IEEE C62.35 for surge suppression standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected circuitry. |
| VBR min/max | 71.1 V / 78.6 V at IT = 1 mA - guaranteed breakdown threshold ensuring predictable turn-on during transients. |
| VC @ IPPM | 103 V at 14.6 A - clamped voltage seen by downstream components during full 1500 W surge, limiting stress on sensitive loads. |
| PPPM | 1500 W - peak pulse power handling capability with 10/1000 µs waveform, enabling robust protection against lightning and load-dump events. |
| ID @ VWM | 1.0 µA - ultra-low reverse leakage at stand-off voltage, minimizing standby power loss and signal distortion. |
| TJ max | +150 °C - maximum junction temperature rating supporting operation in under-hood automotive environments. |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, RoHS-compliant and halogen-free (HE3 suffix), MSL Level 1, 260 °C peak reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when voltage exceeds VBR - polarity-critical for unidirectional operation. |
| Anode | Reference/ground return | Typically tied to system ground or low-impedance return path; completes clamping loop during overvoltage event. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensors requiring long-term reliability under thermal and mechanical stress. |
| 1500 W peak pulse power | Withstands ISO 7637-2 Load Dump Pulse 5a (up to 60 V, 400 ms) and IEC 61000-4-5 surge events without degradation. |
| Low clamping ratio (VC/VBR ≈ 1.33) | Minimizes overvoltage overshoot during clamping, reducing risk of latch-up or gate oxide damage in protected MOSFETs and ICs. |
| MSL Level 1, 260 °C compatible | Enables direct integration into standard lead-free SMT assembly lines without moisture sensitivity concerns or baking requirements. |
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage across temperature and lifetime, critical for consistent protection in industrial control systems. |
Applications
| Automotive Power Distribution | Industrial Motor Drive Inputs |
|---|---|
|
Use Scenario: Protection of 12 V/24 V power rails feeding ECUs, body controllers, and lighting modules against load dump and alternator transients. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed between supply rail and ground, activated within picoseconds upon overvoltage detection. Use Value: Limits clamped voltage to 103 V during 1500 W surges, preventing damage to downstream DC-DC converters and microcontrollers rated ≤ 120 V. |
Use Scenario: Input stage protection for variable-frequency drives receiving AC line input via rectifier bridges exposed to switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS connected across DC bus inputs to clamp positive-going spikes from inductive kickback or grid disturbances. Use Value: Withstands repetitive 14.6 A peak pulses at 103 V clamping level, preserving IGBT gate drivers and current-sense amplifiers from voltage overstress. |
| Automotive Sensor Signal Lines | Telecom Power Interface |
|
Use Scenario: Protection of LIN/CAN physical layer signal lines and analog sensor outputs (e.g., pressure, temperature) in harsh vehicle environments. IC Role / Device Role / Timing Role: Low-leakage (1.0 µA) unidirectional suppressor placed inline with signal path to ground, guarding against ESD and coupled noise. Use Value: Maintains signal integrity with minimal loading due to sub-µA leakage at 64 V, while clamping ESD events to safe levels below IC absolute maximum ratings. |
Use Scenario: Primary-side surge protection on 48 V telecom power feeds entering base station equipment or remote radio units. IC Role / Device Role / Timing Role: Front-end TVS on DC input connector, absorbing lightning-induced surges per IEC 61000-4-5 Level 4 (4 kV/2 kA). Use Value: Delivers 1500 W pulse handling with 103 V clamping, allowing downstream TVS arrays and filters to operate within safe voltage margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ64AHE3_A/I | Lower PPPM (400 W), smaller SMA package (DO-214AC), same VWM/VBR/VC specs but reduced surge capacity. | Suitable for lower-energy transients (e.g., ESD-only); not recommended for load dump or lightning-level surges. | Select when board space is constrained and surge energy is limited to <400 W. |
| SMCJ64CAHE3_A/I | Bidirectional variant with identical VWM/VBR/VC ratings but symmetrical clamping in both polarities; no cathode marking. | Required for AC-coupled or differential signal lines where negative transients must also be suppressed. | Choose only when bidirectional protection is mandated - unidirectional SMCJ64AHE3_A/I is optimal for DC rail protection. |
Compared with SMAJ64AHE3_A/I, the SMCJ64AHE3_A/I delivers 3.75× higher surge power handling in a slightly larger footprint; versus SMCJ64CAHE3_A/I, it offers superior DC rail efficiency with zero reverse leakage in normal operation and explicit polarity control.
Availability
SMCJ64AHE3_A/I is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive inputs, and telecom power interface designs requiring stable component supply, AEC-Q101 compliance, and high-energy transient immunity.
Supply support for SMCJ64AHE3_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 SMCJ series is engineered for high-power transient suppression in demanding environments - particularly automotive, industrial, and telecom infrastructure - where robustness, AEC-Q101 validation, and precise clamping performance are essential.
FAQ
What is the clamping voltage of the SMCJ64AHE3_A/I under full-rated surge conditions?
The SMCJ64AHE3_A/I has a maximum clamping voltage (VC) of 103 V at 14.6 A peak pulse current (IPPM), measured with a 10/1000 µs waveform. This value represents the highest voltage imposed on protected circuitry during a full 1500 W transient event, ensuring downstream components remain within safe operating limits. The SMCJ64AHE3_A/I maintains this clamping performance across its specified temperature range and lifetime.
Is the SMCJ64AHE3_A/I suitable for automotive applications?
Yes, the SMCJ64AHE3_A/I is AEC-Q101 qualified and explicitly designated for automotive use with the "HE3" suffix. It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias, and ESD verification. Its -55 °C to +150 °C operating range, 1500 W surge capability, and UL 497B recognition make the SMCJ64AHE3_A/I appropriate for engine control units, body electronics, and ADAS power domains.
How does the SMCJ64AHE3_A/I differ from the bidirectional SMCJ64CAHE3_A/I?
The SMCJ64AHE3_A/I is unidirectional with a marked cathode band and conducts only during positive overvoltages relative to ground, while the SMCJ64CAHE3_A/I is bidirectional and suppresses transients of either polarity. Both share identical VWM (64 V), VBR (71.1–78.6 V), and VC (103 V) ratings, but the SMCJ64AHE3_A/I exhibits 1.0 µA leakage at VWM versus doubled ID for the CA version per spec note (3). Use the SMCJ64AHE3_A/I for DC rail protection where polarity is fixed.
What PCB layout considerations apply to the SMCJ64AHE3_A/I?
For optimal thermal and electrical performance, mount the SMCJ64AHE3_A/I on minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, as specified in the Vishay datasheet. Avoid narrow traces between the SMCJ64AHE3_A/I and protected node - use short, wide paths to minimize inductance and ensure rapid clamping response. Ground plane connectivity must be low-impedance to handle 14.6 A surge currents without excessive voltage rise.
Does the SMCJ64AHE3_A/I require derating at elevated ambient temperatures?
Yes, the SMCJ64AHE3_A/I must be derated above TA = 25 °C per Figure 2 in the Vishay datasheet. Its peak pulse power (PPPM) decreases linearly with rising junction temperature, reaching ~75 % of 1500 W at 75 °C ambient (assuming typical PCB thermal resistance). Derating ensures the SMCJ64AHE3_A/I remains within its safe operating area and avoids thermal runaway during repeated surge events.
SMCJ64AHE3_A/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:
- Active
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ64AHE3_A/I FAQ
1.How can I place an order for SMCJ64AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ64AHE3_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 SMCJ64AHE3_A/I reliable?
The price and inventory of SMCJ64AHE3_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 SMCJ64AHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMCJ64AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ64AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ64AHE3_A/I?
SMCJ64AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ64AHE3_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 SMCJ64AHE3_A/I?
For technical support, including SMCJ64AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ64AHE3_A/I requirements.
6.How does Aetrix verify that SMCJ64AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMCJ64AHE3_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 SMCJ64AHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMCJ64AHE3_A/I?
All SMCJ64AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ64AHE3_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 SMCJ64AHE3_A/I part is unused and in its original packaging.
Return procedure for SMCJ64AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ64AHE3_A/I Tags
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