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Vishay General Semiconductor - Diodes Division SMCJ64A-M3/57T
- Part No.:
- SMCJ64A-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ64A-M3/57T.pdf
- Description:
- TVS DIODE 64VWM 103VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,293
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Product details
Overview
SMCJ64A-M3/57T from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed to protect sensitive electronics against voltage transients induced by inductive load switching and lightning surges. It features a 64 V stand-off voltage (VWM), 103 V maximum clamping voltage (VC) at 14.6 A peak pulse current (IPPM), and 1500 W peak pulse power dissipation (10/1000 µs waveform), suitable for automotive and industrial power rail protection.
For engineers reviewing the SMCJ64A-M3/57T datasheet, SMCJ64A-M3/57T pinout, SMCJ64A-M3/57T application, or SMCJ64A-M3/57T equivalent, key selection criteria include clamping performance under 10/1000 µs surge, unidirectional polarity marking, halogen-free RoHS compliance (M3 suffix), and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
The SMCJ64A-M3/57T operates as a silicon avalanche diode with glass-passivated junction, delivering fast response time (<1 ps) and low incremental surge resistance to limit transient overvoltage before damage occurs. Its breakdown voltage range is 71.1–78.6 V at 1 mA test current, and it maintains stable clamping up to 150 °C junction temperature.
Designed for unidirectional protection only, the device uses cathode-band polarity marking and exhibits 1.0 µA maximum reverse leakage at 64 V stand-off, enabling low-power standby operation in 12 V–48 V DC systems. Thermal resistance is 75 °C/W junction-to-ambient (on recommended pad layout) and 15 °C/W junction-to-lead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working voltage margin. |
| VBR min/max | 71.1 V / 78.6 V - Breakdown voltage range at 1 mA; ensures reliable avalanche initiation across process variation. |
| VC @ IPPM | 103 V - Clamped voltage at 14.6 A peak pulse current; determines maximum stress imposed on protected IC or MOSFET. |
| PPPM | 1500 W - Peak pulse power handling (10/1000 µs waveform); supports high-energy transients per IEC 61000-4-5 Level 4. |
| IPPM | 14.6 A - Peak pulse current capability; directly limits transient energy absorption without failure. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive or industrial enclosures. |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with IPC-7351B land patterns. |
Pinout & Package
SMCJ64A-M3/57T is housed in an SMC (DO-214AB) package with two terminals: anode and cathode. The cathode is marked by a band on the body; polarity must be observed during PCB layout to ensure correct unidirectional clamping direction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line (e.g., 12 V rail); conducts surge current to ground when VIN exceeds VWM. |
| Anode | Reference node | Typically tied to system ground; completes clamping path during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free, RoHS-compliant (M3 suffix) | Meets JEDEC J-STD-201 Class 2 whisker resistance and global environmental regulations without compromising thermal reliability. |
| MSL Level 1 rating | Unlimited floor life at ≤30 °C/85 % RH; eliminates bake requirements prior to reflow soldering. |
| 1500 W peak pulse power (10/1000 µs) | Withstands IEC 61000-4-5 Combination Wave (1.2/50 µs + 8/20 µs) surges up to ±2 kV on 50 Ω source impedance. |
| Low clamping ratio (VC/VWM = 1.61) | Minimizes voltage overshoot during clamping, reducing risk of latch-up or gate oxide damage in downstream MOSFETs or microcontrollers. |
| Glass-passivated junction | Enhances long-term stability and moisture resistance versus epoxy-passivated alternatives, critical for automotive under-hood use. |
Applications
| Automotive Power Rail Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and ground, clamping spikes above 64 V within nanoseconds. Use Value: Limits peak voltage to 103 V during 14.6 A surges, preventing damage to CAN transceivers and MCU power supplies rated for 120 V absolute max. | Use Scenario: Safeguarding 24 V digital input modules in factory automation against field-wiring induced surges. IC Role / Device Role / Timing Role: Front-end transient suppressor on dry-contact inputs, absorbing energy from relay coil flyback and ESD events. Use Value: Withstands repeated 1500 W pulses without degradation, extending module service life in high-noise manufacturing environments. |
| Telecom DC Power Feeds | Consumer Appliance Motor Drivers |
Use Scenario: Shielding PoE-powered network switches from AC mains coupling and lightning-induced surges on 48 V DC input. IC Role / Device Role / Timing Role: Primary overvoltage clamp on primary-side DC bus, coordinated with upstream fuses and secondary-side TVS arrays. Use Value: Fast <1 ps response ensures clamping occurs before 48 V regulator ICs experience overvoltage stress, meeting GR-1089-CORE immunity requirements. | Use Scenario: Protecting BLDC motor driver ICs in smart washing machines from back-EMF spikes during commutation. IC Role / Device Role / Timing Role: Parallel-connected TVS across H-bridge supply rails, diverting inductive kickback away from gate drivers and sense resistors. Use Value: 103 V clamping voltage stays below 120 V absolute maximum ratings of common 60 V-rated MOSFETs, avoiding destructive avalanche failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ64A-E3/57T | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher VC (104 V at 3.9 A). | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 or automotive load dump. | Select when board space is constrained and surge threat level is ≤400 W. |
| SMCJ64CA-M3/57T | Bidirectional variant; identical VWM, VBR, and VC, but symmetrical clamping in both polarities. | Required for AC-coupled signal lines or differential buses where polarity reversal may occur. | Choose only if bidirectional protection is mandated; otherwise, unidirectional SMCJ64A-M3/57T offers better cost and layout simplicity. |
Compared with SMAJ64A-E3/57T, SMCJ64A-M3/57T delivers 3.75× higher surge energy handling in the same mounting footprint; versus SMCJ64CA-M3/57T, it provides optimized clamping for DC rails with reduced capacitance and lower leakage, improving efficiency in always-on systems.
Availability
SMCJ64A-M3/57T is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, and telecom power distribution systems requiring stable component supply and halogen-free compliance.
Supply support for SMCJ64A-M3/57T 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, and protection devices with emphasis on reliability, automotive qualification, and high-volume manufacturability.
The SMCJ series was developed specifically for robust transient suppression in harsh environments-meeting AEC-Q101 for automotive and supporting IEC/EN 61000-4-2/4-4/4-5 immunity standards across industrial and telecom applications.
FAQ
What is the clamping voltage of SMCJ64A-M3/57T at its rated peak pulse current?
The SMCJ64A-M3/57T has a maximum clamping voltage (VC) of 103 V at its rated peak pulse current (IPPM) of 14.6 A, measured using a 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during surge events and is confirmed in Vishay's Document Number 88394, page 2. The SMCJ64A-M3/57T maintains this clamping performance across its full operating temperature range of -55 °C to +150 °C.
Is SMCJ64A-M3/57T suitable for automotive applications?
Yes, the SMCJ64A-M3/57T is qualified to AEC-Q101 when ordered with HE3 or HM3 suffixes; however, the M3/57T variant is commercial-grade and not AEC-Q101 certified. For non-automotive applications-including industrial controls and telecom power supplies-the SMCJ64A-M3/57T meets all electrical and mechanical specifications required for harsh-environment transient suppression. Always verify qualification status via the full ordering code before deployment in automotive safety-critical systems.
What does the "M3" suffix indicate in SMCJ64A-M3/57T?
The "M3" suffix in SMCJ64A-M3/57T denotes halogen-free, RoHS-compliant construction meeting JEDEC J-STD-201 Class 2 whisker resistance requirements. It also signifies compliance with Vishay's material categorization standard (Document 99912) and supports lead-free reflow profiles up to 260 °C peak. Unlike E3-suffixed parts, M3 devices exclude brominated flame retardants while maintaining identical electrical performance and SMC package dimensions as the SMCJ64A-M3/57T.
How does SMCJ64A-M3/57T differ from SMCJ64CA-M3/57T?
The SMCJ64A-M3/57T is unidirectional, with cathode-band polarity marking and asymmetric conduction (forward-biased only), whereas SMCJ64CA-M3/57T is bidirectional and symmetrical in both directions. Both share identical VWM (64 V), VBR (71.1–78.6 V), and VC (103 V), but the CA version lacks polarity marking and exhibits doubled reverse leakage (2.0 µA vs. 1.0 µA) for VWM ≤10 V devices-though this does not apply to the 64 V variant. The SMCJ64A-M3/57T is preferred for DC rail protection; SMCJ64CA-M3/57T suits AC or differential signal lines.
What PCB pad layout is recommended for optimal thermal performance of SMCJ64A-M3/57T?
Vishay specifies a minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad area per terminal for the SMCJ64A-M3/57T to achieve rated 1500 W pulse power and 75 °C/W junction-to-ambient thermal resistance. These pads must be thermally connected to internal ground or power planes via ≥4 thermal vias (0.3 mm diameter, filled or capped) per pad. The SMCJ64A-M3/57T datasheet (Document 88394, page 5) confirms this layout enables full derating per Figure 2 and avoids thermal runaway during repetitive surge events.
SMCJ64A-M3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ64A-M3/57T FAQ
1.How can I place an order for SMCJ64A-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ64A-M3/57T 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 SMCJ64A-M3/57T reliable?
The price and inventory of SMCJ64A-M3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ64A-M3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ64A-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ64A-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ64A-M3/57T?
SMCJ64A-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ64A-M3/57T 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 SMCJ64A-M3/57T?
For technical support, including SMCJ64A-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ64A-M3/57T requirements.
6.How does Aetrix verify that SMCJ64A-M3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ64A-M3/57T 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 SMCJ64A-M3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ64A-M3/57T?
All SMCJ64A-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ64A-M3/57T, 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 SMCJ64A-M3/57T part is unused and in its original packaging.
Return procedure for SMCJ64A-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ64A-M3/57T Tags
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