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Vishay General Semiconductor - Diodes Division SMCJ64AHE3/57T
- Part No.:
- SMCJ64AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ64AHE3/57T.pdf
- Description:
- TVS DIODE 64VWM 103VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,622
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Product details
Overview
SMCJ64AHE3/57T from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 64 V standoff voltage (VWM), 71.1–78.6 V breakdown voltage (VBR) at 1 mA, 103 V clamping voltage (VC) at 14.6 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive ECUs, industrial motor drives, and telecom power supplies.
For engineers reviewing the SMCJ64AHE3/57T datasheet, SMCJ64AHE3/57T pinout, SMCJ64AHE3/57T application, or SMCJ64AHE3/57T equivalent, key selection criteria include clamping performance under 1500 W surge, AEC-Q101 qualification for automotive use, 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 voltage-clamping protector triggered by transient overvoltages exceeding its reverse standoff threshold. Its glass-passivated junction ensures stable breakdown behavior, low incremental surge resistance, and fast response time (<1 ns), enabling effective suppression of ESD, lightning-induced surges, and inductive switching spikes.
The device is rated for -55 °C to +150 °C operating junction temperature, meets MSL level 1 per J-STD-020 (260 °C reflow peak), and delivers 103 V clamping at 14.6 A IPPM - critical for safeguarding downstream MOSFETs, ICs, and sensor interfaces without sacrificing system reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 71.1 V / 78.6 V at 1 mA - guaranteed breakdown range defining turn-on threshold tolerance |
| VC @ IPPM | 103 V at 14.6 A - clamped voltage during 1500 W 10/1000 µs surge, limiting stress on protected circuitry |
| PPPM | 1500 W - peak transient power handling capability under standardized surge waveform |
| ID @ VWM | 1.0 µA - ultra-low leakage ensuring minimal standby power loss in high-impedance circuits |
| TJ max | +150 °C - maximum junction temperature supporting operation in under-hood automotive environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, RoHS-compliant and halogen-free (HE3 suffix), polarity indicated by cathode band on unidirectional variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Protected line connection | Connected to the node requiring overvoltage protection; reverse-biased during normal operation |
| Anode | Ground or return path | Typically tied to system ground or low-impedance return plane to sink surge current safely |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power rating | Enables robust protection against severe transients like ISO 7637-2 Pulse 5a (load dump) in 12 V automotive systems |
| AEC-Q101 qualification | Validated for automotive electronics including engine control units, ADAS sensors, and body controllers |
| Glass passivated junction | Ensures stable VBR over lifetime and improved resistance to humidity and thermal stress |
| Low clamping ratio (VC/VBR ≈ 1.33) | Minimizes voltage overshoot during clamping, reducing risk of damage to sensitive downstream components |
| MSL Level 1 moisture sensitivity | Allows standard SMT reflow without baking, supporting high-yield automated assembly |
Applications
| Automotive Power Rail Protection | Industrial Motor Drive Control |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs in engine control modules against load dump transients up to 35 V for 400 ms. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VCC and GND, clamping excess energy before it reaches the LDO or MCU. Use Value: Limits peak voltage to ≤103 V during 1500 W surge, preventing latch-up or permanent damage to 5 V/3.3 V logic. | Use Scenario: Safeguarding gate driver ICs and IGBTs in variable-frequency drives exposed to inductive kickback from motor windings. IC Role / Device Role / Timing Role: Mounted across DC bus rails or gate-source terminals to clamp switching spikes within nanoseconds. Use Value: Fast <1 ns response and low Rsurge ensure clamping occurs before gate oxide breakdown thresholds are exceeded. |
| Telecom DC Power Input | Automotive Sensor Interface Protection |
Use Scenario: Securing 48 V PoE-powered base station equipment against lightning-induced surges entering via Ethernet ports or DC input connectors. IC Role / Device Role / Timing Role: Primary-level TVS on main DC input rail upstream of DC/DC converters and PMICs. Use Value: 1500 W PPPM rating handles high-energy surges while maintaining low leakage (<1 µA) to avoid degrading efficiency. | Use Scenario: Shielding LIN/CAN transceiver supply pins and data lines in parking assist ultrasonic sensors subjected to ESD and cable discharge events. IC Role / Device Role / Timing Role: Unidirectional TVS on VCC line and bidirectional variants on data lines (e.g., SMCJ64CA). Use Value: AEC-Q101 qualification and 150 °C TJ max ensure reliable operation in under-bumper mounting locations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ64A-E3/61T | Lower PPPM (400 W), SMA package (smaller footprint, lower thermal mass) | Suitable for space-constrained consumer electronics; insufficient for automotive load dump | Select only for non-automotive, low-energy surge environments where board area is critical |
| SMCJ64A-M3/57T | Identical electrical specs and AEC-Q101 qualification; halogen-free construction instead of standard RoHS | No functional difference; required where halogen-free compliance is mandated (e.g., EU automotive Tier 1) | Drop-in replacement when halogen-free material specification applies |
Compared with SMCJ64AHE3/57T, SMAJ64A-E3/61T offers reduced surge capacity and thermal performance due to smaller package, while SMCJ64A-M3/57T provides identical protection performance with halogen-free materials - making it a direct material-compliance alternative rather than an electrical one.
Availability
SMCJ64AHE3/57T is available at Aetrix Electronics and suitable for automotive electronic control units, industrial motor drive systems, and telecom DC power inputs requiring stable component supply with full AEC-Q101 traceability and long-term lifecycle support.
Supply support for SMCJ64AHE3/57T 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, precision, and application-specific optimization.
The SMCJ series is engineered for high-energy transient suppression in harsh environments - particularly targeting automotive, industrial, and telecom infrastructure where robustness, AEC-Q101 validation, and repeatable clamping performance are mandatory.
FAQ
What is the clamping voltage of SMCJ64AHE3/57T at its rated peak pulse current?
The SMCJ64AHE3/57T has a maximum clamping voltage (VC) of 103 V when subjected to its rated peak pulse current (IPPM) of 14.6 A under a 10/1000 µs waveform. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during surge events. The clamping performance is guaranteed across the full operating temperature range and forms the basis for safe margining in designs using this TVS diode.
Is SMCJ64AHE3/57T qualified for automotive applications?
Yes, SMCJ64AHE3/57T is AEC-Q101 qualified, confirming its suitability for automotive applications including engine control units, body electronics, and ADAS subsystems. The HE3 suffix explicitly denotes RoHS-compliant and AEC-Q101-qualified construction. Qualification covers stress tests such as high-temperature reverse bias, temperature cycling, and ESD - all performed per the AEC-Q101 standard. This makes SMCJ64AHE3/57T appropriate for under-hood and cabin-mounted systems operating up to +150 °C junction temperature.
What does the "HE3" suffix mean in SMCJ64AHE3/57T?
The "HE3" suffix in SMCJ64AHE3/57T indicates RoHS-compliant construction with AEC-Q101 qualification. Specifically, "H" denotes AEC-Q101 qualification, "E3" signifies standard RoHS compliance (lead-free, no exemptions beyond Annex II), and the combination confirms both environmental compliance and automotive-grade reliability. This distinguishes it from commercial-grade variants (e.g., E3-only) and halogen-free automotive versions (HM3). The HE3 marking is laser-etched on the device body per Vishay's packaging standards.
How is the polarity marked on SMCJ64AHE3/57T?
SMCJ64AHE3/57T is a unidirectional TVS diode, and its polarity is marked by a distinct cathode band located near one end of the SMC (DO-214AB) package. During PCB layout, the banded end must be connected to the line being protected (e.g., VCC or signal), while the opposite (anode) terminal connects to ground or return. This orientation ensures proper reverse-bias operation under normal conditions and rapid forward conduction into clamping mode during overvoltage events. No marking appears on bidirectional variants, but SMCJ64AHE3/57T is unidirectional and always uses the band.
What is the thermal resistance from junction to ambient for SMCJ64AHE3/57T?
The typical thermal resistance from junction to ambient (RθJA) for SMCJ64AHE3/57T is 75 °C/W when mounted on the minimum recommended pad layout - defined as 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. This value assumes still air conditions and is used to estimate junction temperature rise under steady-state power dissipation. For transient surge conditions, thermal impedance curves (Fig. 5 in the datasheet) govern short-duration heating, while RθJA guides long-term derating and layout optimization for sustained power handling.
SMCJ64AHE3/57T 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)
SMCJ64AHE3/57T FAQ
1.How can I place an order for SMCJ64AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ64AHE3/57T 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 SMCJ64AHE3/57T reliable?
The price and inventory of SMCJ64AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ64AHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ64AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ64AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ64AHE3/57T?
SMCJ64AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ64AHE3/57T 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 SMCJ64AHE3/57T?
For technical support, including SMCJ64AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ64AHE3/57T requirements.
6.How does Aetrix verify that SMCJ64AHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ64AHE3/57T 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 SMCJ64AHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ64AHE3/57T?
All SMCJ64AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ64AHE3/57T, 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 SMCJ64AHE3/57T part is unused and in its original packaging.
Return procedure for SMCJ64AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ64AHE3/57T Tags
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