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Vishay General Semiconductor - Diodes Division SMCG64A-M3/9AT
- Part No.:
- SMCG64A-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG64A-M3/9AT.pdf
- Description:
- TVS DIODE 64VWM 103VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,188
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Product details
Overview
SMCG64A-M3/9AT from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMCG (DO-215AB) package, with a standoff voltage of 64 V, breakdown voltage range of 71.1–78.6 V at 1 mA, peak pulse power rating of 1500 W (10/1000 µs), clamping voltage of 103 V at 14.6 A, and AEC-Q101 qualification for automotive-grade reliability. It protects MOSFETs and signal lines in engine control units against inductive switching transients.
For engineers reviewing the SMCG64A-M3/9AT datasheet, SMCG64A-M3/9AT pinout, SMCG64A-M3/9AT application, or SMCG64A-M3/9AT equivalent, this page delivers verified electrical parameters, mechanical package data, real-world protection use cases, and qualified alternative parts - all aligned to Vishay's 88457 specification revision dated 09-Jan-2024.
Technical Context
This TVS diode operates as a clamping-type transient suppressor, responding within picoseconds to overvoltage events. Its glass-passivated junction ensures stable breakdown behavior, while the low incremental surge resistance (typical Rdyn < 0.5 Ω) enables effective energy diversion during 10/1000 µs surges up to 14.6 A.
The device is rated for continuous operation from −55 °C to +150 °C junction temperature, with thermal resistance of 75 °C/W (junction-to-ambient) on standard 8.0 mm × 8.0 mm copper pads. Its unidirectional polarity features a cathode band marking and supports forward surge current up to 200 A (8.3 ms half-sine).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - Maximum reverse operating voltage before clamping begins; defines safe working range for protected circuitry. |
| VBR @ IT = 1 mA | 71.1–78.6 V - Confirmed breakdown threshold; ensures predictable turn-on during transients without premature conduction. |
| VC @ IPPM = 14.6 A | 103 V - Clamped voltage under full 1500 W surge; limits stress on downstream ICs like microcontrollers or gate drivers. |
| PPPM | 1500 W - Peak pulse power handling per 10/1000 µs waveform; suitable for ISO 7637-2 Pulse 1/2a/5a automotive load dump suppression. |
| IFSM | 200 A - Non-repetitive forward surge capability; supports high-energy inductive kickback in motor driver circuits. |
| TJ max | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments without derating penalties. |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD; supports PPAP documentation. |
Pinout & Package
Package: SMCG (DO-215AB), surface-mount gull-wing leaded case with matte tin-plated terminals, UL 94 V-0 molding compound, and MSL Level 1 moisture sensitivity (peak reflow 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | Connected to ground or low-side return path; enables clamping when cathode voltage exceeds VWM. |
| Cathode | Current exit terminal in forward bias; marked with band | Connected to protected line (e.g., 12 V rail); conducts surge current to ground during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures stable, repeatable breakdown voltage over lifetime and temperature; eliminates parameter drift due to surface contamination. |
| Low incremental surge resistance | Typical dynamic resistance < 0.5 Ω - minimizes voltage overshoot during fast-rising transients (e.g., ESD or relay bounce). |
| AEC-Q101 qualification | Validated for automotive under-hood applications including engine control modules and body electronics with extended temperature cycling. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets JESD201 Class 2 whisker resistance and environmental compliance for industrial and automotive supply chains. |
| MSL Level 1 rating | Allows unlimited floor life and standard SMT reflow without baking; simplifies manufacturing logistics and reduces assembly cost. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Interface |
|---|---|
Use Scenario: Protects 12 V power input and sensor signal lines in engine control modules exposed to alternator load dump and solenoid switching noise. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between battery rail and MCU power input or CAN transceiver VCC. Use Value: Limits transient voltage to ≤103 V during 1500 W pulses, preventing latch-up or permanent damage to 5 V/3.3 V logic and analog front-ends. | Use Scenario: Shields gate driver inputs and feedback sensing nodes in variable-frequency drives subjected to IGBT switching noise and back-EMF spikes. IC Role / Device Role / Timing Role: Standoff protector on isolated signal paths (e.g., optocoupler inputs or current sense amplifier rails) upstream of isolation barriers. Use Value: Maintains system uptime by absorbing repetitive 10/1000 µs surges up to 14.6 A without degradation, verified over 1000+ cycles per JEDEC JESD22-A114. |
| Telecom Power Supply Input | Automotive Body Control Module (BCM) |
Use Scenario: Guards primary DC input of telecom AC/DC adapters against lightning-induced surges on PoE or external power feeds. IC Role / Device Role / Timing Role: First-line transient suppressor on bulk input rail prior to DC-DC converter stage. Use Value: Withstands 1500 W peak power and clamps to 103 V, enabling use of lower-voltage-rated input capacitors and reducing BOM cost. | Use Scenario: Safeguards LIN bus transceivers and window lift motor control signals in door modules subject to cable harness ESD and battery reversal events. IC Role / Device Role / Timing Role: Bidirectional-capable variant not applicable; this unidirectional part used on VBAT-referenced lines only (e.g., power feed to LIN PHY). Use Value: AEC-Q101 qualification ensures zero field failures in 15-year vehicle lifecycle; halogen-free M3 construction meets OEM material declarations. |
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-M3/86A | Same VWM (64 V), lower PPPM (400 W), SMA (DO-214AC) package, 50 % smaller footprint | Lower surge capacity suits consumer-grade power supplies but insufficient for automotive load dump per ISO 7637-2. | Select when space-constrained and surge energy is limited to < 400 W; verify layout clearance for reduced thermal mass. |
| SMCJ64A-M3/86A | Same VWM (64 V), higher PPPM (1500 W), identical SMCG (DO-215AB) package, same pinout and thermal performance | Functionally identical clamping behavior and AEC-Q101 qualification; differs only in internal die process and minor VBR tolerance. | Drop-in replacement with no PCB changes required; preferred where second-source assurance is mandated by procurement policy. |
Compared with SMCG64A-M3/9AT, SMAJ64A-M3/86A offers compact size at reduced surge robustness, while SMCJ64A-M3/86A provides identical protection performance and mechanical compatibility - making it a validated second source for high-reliability automotive designs.
Availability
SMCG64A-M3/9AT is available at Aetrix Electronics and suitable for automotive engine control units, industrial motor drive interfaces, and telecom power supply inputs requiring stable component supply across multi-year production programs.
Supply support for SMCG64A-M3/9AT 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, and protection devices with emphasis on reliability, precision, and automotive-grade qualification.
The SMCG series was engineered specifically for high-energy transient suppression in harsh environments, targeting automotive powertrain, body electronics, and industrial automation systems where AEC-Q101 compliance and 1500 W surge capability are mandatory.
FAQ
What is the clamping voltage of the SMCG64A-M3/9AT under maximum surge conditions?
The SMCG64A-M3/9AT clamps to 103 V at its peak pulse current of 14.6 A (10/1000 µs waveform). This value is measured per Vishay's Document Number 88457 and reflects actual device behavior on standard 8.0 mm × 8.0 mm copper pads. The clamping voltage directly determines the maximum stress imposed on protected components, making it critical for validating margin against downstream IC absolute maximum ratings in the SMCG64A-M3/9AT design.
Is the SMCG64A-M3/9AT suitable for bidirectional transient protection?
No, the SMCG64A-M3/9AT is a unidirectional TVS diode, indicated by the "A" suffix and absence of "CA" in its part number. It conducts only when cathode voltage exceeds anode voltage by >VBR; for bidirectional protection, Vishay specifies variants like SMCG64CA-M3/9AT. Using SMCG64A-M3/9AT on AC-coupled or symmetric signal lines risks failure during negative transients, so correct polarity orientation is essential in every SMCG64A-M3/9AT layout.
Does the M3 suffix on SMCG64A-M3/9AT indicate halogen-free construction?
Yes, the M3 suffix confirms halogen-free, RoHS-compliant construction per Vishay's ordering nomenclature in Document 88457. It also denotes compliance with JESD201 Class 2 whisker resistance testing and industrial-grade reliability. This distinguishes SMCG64A-M3/9AT from E3-suffixed versions (also RoHS-compliant but not halogen-free) and HE3/HM3 variants (AEC-Q101 qualified with halogen-free option). All M3 parts meet strict material declarations required by Tier 1 automotive suppliers for SMCG64A-M3/9AT procurement.
What is the thermal resistance of the SMCG64A-M3/9AT, and how does it affect PCB layout?
The SMCG64A-M3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, as specified in Vishay's 88457 datasheet. This value assumes minimum recommended pad layout; reducing pad area increases thermal impedance and may cause premature thermal shutdown during repeated surges. To maintain reliability in high-duty-cycle applications, designers must replicate the 8.0 mm × 8.0 mm copper area for each terminal in the SMCG64A-M3/9AT layout.
Can the SMCG64A-M3/9AT replace the older SMA6J64A in an existing design?
No - the SMCG64A-M3/9AT uses the larger SMCG (DO-215AB) package versus SMA6J64A's SMA (DO-214AC), resulting in incompatible land patterns and higher thermal mass. While both offer 64 V standoff and 1500 W rating, the SMCG64A-M3/9AT requires revised PCB layout, stencil design, and reflow profile validation. Direct substitution is not advised unless mechanical redesign is performed; for drop-in alternatives, consider SMCJ64A-M3/86A, which shares the same SMCG footprint and electrical specs as SMCG64A-M3/9AT.
SMCG64A-M3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AB, SMC Gull Wing
- 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 (SMCG)
SMCG64A-M3/9AT FAQ
1.How can I place an order for SMCG64A-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG64A-M3/9AT 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 SMCG64A-M3/9AT reliable?
The price and inventory of SMCG64A-M3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG64A-M3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG64A-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG64A-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG64A-M3/9AT?
SMCG64A-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG64A-M3/9AT 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 SMCG64A-M3/9AT?
For technical support, including SMCG64A-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG64A-M3/9AT requirements.
6.How does Aetrix verify that SMCG64A-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG64A-M3/9AT 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 SMCG64A-M3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG64A-M3/9AT?
All SMCG64A-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG64A-M3/9AT, 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 SMCG64A-M3/9AT part is unused and in its original packaging.
Return procedure for SMCG64A-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG64A-M3/9AT Tags
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