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Vishay General Semiconductor - Diodes Division SMCJ64AHE3/9AT
- Part No.:
- SMCJ64AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ64AHE3/9AT.pdf
- Description:
- TVS DIODE 64VWM 103VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,308
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Product details
Overview
SMCJ64AHE3/9AT from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 64 V standoff voltage (VWM), 71.1–78.6 V breakdown range (VBR at 1 mA), 1500 W peak pulse power (10/1000 μs), and clamps to ≤103 V at 14.6 A peak surge current. It is AEC-Q101 qualified and housed in an SMC (DO-214AB) package for automotive and industrial DC bus protection.
For engineers reviewing the SMCJ64AHE3/9AT datasheet, SMCJ64AHE3/9AT pinout, SMCJ64AHE3/9AT application, or SMCJ64AHE3/9AT equivalent, key selection criteria include its 1500 W surge rating, ±5% VBR tolerance, low 0.105 %/°C temperature coefficient, AEC-Q101 qualification status, and compatibility with automated SMT placement on 8 mm × 8 mm copper pads.
Technical Context
This TVS diode operates as a clamping device that remains high-impedance below VWM = 64 V and rapidly transitions to low-impedance conduction above VBR ≥ 71.1 V to limit transient voltages. Its glass-passivated junction ensures stable leakage (<1 μA at VWM) and repeatable breakdown behavior under repetitive surges.
The SMCJ64AHE3/9AT is rated for 200 A non-repetitive forward surge (8.3 ms half-sine) and exhibits a typical junction-to-lead thermal resistance of 15 °C/W, enabling effective heat dissipation during transient events when mounted per recommended pad layout. Its MSL Level 1 rating supports lead-free reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 71.1 V / 78.6 V at 1 mA - Confirmed breakdown range defining turn-on threshold |
| VC @ IPPM | ≤103 V at 14.6 A - Clamping voltage limiting downstream circuit stress during 1500 W transients |
| PPPM | 1500 W (10/1000 μs) - Peak surge power handling capacity for lightning/inductive switching events |
| IFSM | 200 A (8.3 ms half-sine) - Forward surge current capability for unidirectional applications |
| TJ max | +150 °C - Maximum junction temperature supporting operation in under-hood automotive environments |
| Temp. Coeff. | +0.105 %/°C - Predictable VBR drift with temperature for stable protection across operating range |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded plastic case with matte tin-plated leads; polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-side connection in reverse-biased protection configuration | Connected to protected line; conducts when transient exceeds VBR, shunting surge to ground |
| Anode (non-banded end) | Reference/ground return path | Typically tied to system ground or low-impedance return plane to complete clamping current path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity, and surge endurance |
| Glass passivated junction | Ensures stable leakage current (<1 μA at VWM) and consistent VBR over lifetime and environmental stress |
| Low incremental surge resistance | Enables tight clamping (VC − VBR ≈ 32 V) and minimal let-through energy during fast transients |
| MSL Level 1 (260 °C) | Compatible with standard lead-free reflow profiles without preconditioning or special handling |
| UL 94 V-0 molding compound | Self-extinguishing encapsulation meets flammability requirements for safety-critical PCB layouts |
Applications
| Automotive Power Distribution | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting 24 V DC power rails in engine control units against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and ECU input stage to clamp spikes up to ISO 7637-2 Pulse 5a. Use Value: Withstands 1500 W surges and clamps to ≤103 V, preventing damage to downstream PMICs and microcontrollers. | Use Scenario: Safeguarding digital input channels of programmable logic controllers exposed to field wiring inductive kickback. IC Role / Device Role / Timing Role: Standoff-rated TVS on each 24 V sensor input line, conducting only during >64 V transients to preserve signal integrity. Use Value: Low 1 μA leakage at 64 V avoids false triggering; 14.6 A IPPM handles typical 1 A–5 A inductive surges without degradation. |
| Telecom DC Power Feeds | Consumer Appliance Motor Drivers |
Use Scenario: Overvoltage suppression on -48 V telecom power feeds subject to lightning-induced surges on long-line interfaces. IC Role / Device Role / Timing Role: Reverse-biased TVS (with polarity adapted) on primary DC input to telecom shelf power modules. Use Value: 1500 W rating and 103 V clamping ensure compliance with ITU-T K.20/21 immunity requirements for central office equipment. | Use Scenario: Protecting gate drivers and H-bridge MOSFETs in washing machine motor control boards from back-EMF during commutation. IC Role / Device Role / Timing Role: Unidirectional TVS across motor supply rails to absorb inductive energy when PWM switches off. Use Value: 200 A IFSM rating accommodates worst-case motor stall currents; AEC-Q101 qualification ensures long-term stability in high-vibration environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC64A-E3/9AT | Lower 600 W PPPM, same VWM/VBR, smaller SMA package | Reduced surge margin; suitable only for lower-energy transients or space-constrained designs | Select when board area is critical and surge threat level is ≤600 W |
| SMCJ64CAHE3/9AT | Bidirectional variant; identical VWM/VBR/PPPM, but symmetric clamping in both polarities | Required for AC-coupled or floating signal lines where polarity reversal may occur | Choose for differential data lines, RS-485, or AC power inputs needing bidirectional protection |
Compared with SAC64A-E3/9AT, the SMCJ64AHE3/9AT delivers 2.5× higher surge power handling and superior thermal robustness in the larger SMC package; compared with SMCJ64CAHE3/9AT, it provides optimized unidirectional clamping with lower capacitance and no reverse conduction path-ideal for DC power rail protection.
Availability
SMCJ64AHE3/9AT is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, telecom power supplies, and appliance motor controllers requiring stable component supply with AEC-Q101 assurance and full traceability.
Supply support for SMCJ64AHE3/9AT 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 performance.
The SMCJ series was developed for high-energy transient suppression in harsh environments-specifically targeting automotive, industrial, and telecom systems where failure due to voltage surges must be prevented without compromising signal fidelity or thermal stability.
FAQ
What is the maximum clamping voltage of the SMCJ64AHE3/9AT under a 1500 W transient?
The SMCJ64AHE3/9AT clamps to a maximum of 103 V when subjected to its rated 1500 W peak pulse power (10/1000 μs waveform), corresponding to a peak surge current of 14.6 A. This value is measured and guaranteed per Vishay's datasheet Document Number 88394, Revision 09-Jan-2024, and defines the upper voltage limit imposed on protected circuitry during standardized surge events. The SMCJ64AHE3/9AT maintains this clamping performance across its full operating temperature range.
Is the SMCJ64AHE3/9AT suitable for automotive applications?
Yes, the SMCJ64AHE3/9AT is explicitly AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3", which denotes RoHS-compliant and automotive-grade qualification. It meets requirements for temperature cycling, mechanical shock, humidity resistance, and surge endurance required in engine control units, body electronics, and ADAS power domains. The SMCJ64AHE3/9AT is designed for under-hood and chassis-mounted systems operating from −55 °C to +150 °C junction temperature.
What does the "9AT" suffix indicate in SMCJ64AHE3/9AT?
"9AT" is Vishay's preferred package code denoting 13-inch diameter plastic tape-and-reel packaging containing 3500 units per reel. This format supports high-volume automated SMT placement and is compatible with industry-standard pick-and-place equipment. The "HE3" portion confirms RoHS compliance and AEC-Q101 qualification, while "9AT" specifies the delivery mode-not electrical or thermal characteristics. The SMCJ64AHE3/9AT shares identical electrical specs with other SMCJ64AHE3 variants in different reels or trays.
How does the SMCJ64AHE3/9AT differ from the bidirectional SMCJ64CAHE3/9AT?
The SMCJ64AHE3/9AT is unidirectional and conducts only in reverse bias above VBR, making it ideal for DC power rail protection with defined polarity. In contrast, the SMCJ64CAHE3/9AT is bidirectional, offering symmetrical clamping for AC signals or floating lines. Both share identical VWM (64 V), VBR, PPPM (1500 W), and package-but the SMCJ64AHE3/9AT has lower junction capacitance and avoids reverse conduction, reducing noise coupling in sensitive DC circuits.
What is the thermal resistance from junction to lead for the SMCJ64AHE3/9AT?
The SMCJ64AHE3/9AT has a typical thermal resistance of 15 °C/W from junction to lead (RθJL), as specified in Vishay's datasheet. This parameter enables accurate estimation of junction temperature rise during transient events when heat is conducted through the leads into the PCB copper. Combined with its 75 °C/W junction-to-ambient rating (RθJA on minimum pad layout), the SMCJ64AHE3/9AT supports reliable operation under repeated surge conditions when mounted per recommended 8 mm × 8 mm copper pads.
SMCJ64AHE3/9AT 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ64AHE3/9AT FAQ
1.How can I place an order for SMCJ64AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ64AHE3/9AT 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 SMCJ64AHE3/9AT reliable?
The price and inventory of SMCJ64AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ64AHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ64AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ64AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ64AHE3/9AT?
SMCJ64AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ64AHE3/9AT 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 SMCJ64AHE3/9AT?
For technical support, including SMCJ64AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ64AHE3/9AT requirements.
6.How does Aetrix verify that SMCJ64AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ64AHE3/9AT 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 SMCJ64AHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ64AHE3/9AT?
All SMCJ64AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ64AHE3/9AT, 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 SMCJ64AHE3/9AT part is unused and in its original packaging.
Return procedure for SMCJ64AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ64AHE3/9AT Tags
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