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Vishay General Semiconductor - Diodes Division SMCG6.5A-E3/9AT
- Part No.:
- SMCG6.5A-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG6.5A-E3/9AT.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,487
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Product details
Overview
SMCG6.5A-E3/9AT from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, featuring a 6.5 V stand-off voltage (VWM), 7.22–7.98 V breakdown voltage (VBR) at 10 mA, 11.2 V clamping voltage (VC) at 133.9 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with a 10/1000 µs waveform - designed for robust overvoltage protection on DC power rails and signal lines in automotive ECUs.
For engineers reviewing the SMCG6.5A-E3/9AT datasheet, SMCG6.5A-E3/9AT pinout, SMCG6.5A-E3/9AT application, or SMCG6.5A-E3/9AT equivalent, this device is evaluated for fast-response surge suppression in AEC-Q101-compliant automotive systems, industrial sensor interfaces, and low-voltage DC power inputs where clamping accuracy, thermal reliability, and RoHS-compliant packaging are critical selection criteria.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging glass-passivated junction technology for stable breakdown behavior and low incremental surge resistance. Its 1500 W PPPM rating is validated under standardized 10/1000 µs transients on 8.0 mm × 8.0 mm copper pads, and it maintains operation across –55 °C to +150 °C junction temperature range.
The SMCG6.5A-E3/9AT exhibits 1000 µA maximum reverse leakage at VWM (6.5 V), 75 °C/W typical junction-to-ambient thermal resistance, and meets J-STD-020 MSL Level 1 with 260 °C reflow peak - confirming suitability for high-reliability surface-mount assembly without moisture sensitivity concerns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe DC rail margin for 5 V–6 V systems. |
| VBR min/max | 7.22 V / 7.98 V at 10 mA - Tight breakdown window ensures predictable turn-on during transients without premature conduction. |
| VC @ IPPM | 11.2 V at 133.9 A - Clamping voltage limits downstream IC stress during 1500 W surges; <4.7 V overhead above VWM enables robust margin. |
| PPPM | 1500 W (10/1000 µs) - Sustains high-energy lightning-induced or inductive-switching transients common in automotive and industrial environments. |
| TJ max | +150 °C - Enables deployment in under-hood automotive modules and thermally constrained PCB layouts without derating penalties. |
| RθJA | 75 °C/W - Confirms thermal performance on standard 0.31" × 0.31" copper pads; supports 6.5 W steady-state dissipation at TA = 50 °C. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per AEC-Q101 Rev D requirements. |
Pinout & Package
Package: SMCG (DO-215AB) - low-profile, gull-wing surface-mount case with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards; meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to protected circuit ground or low-side return path | Provides reference node for unidirectional clamping; must be routed to lowest-impedance ground plane to minimize clamping overshoot. |
| Cathode | Current exit terminal in forward bias; marked by band on package body | Connected to line being protected (e.g., 5 V supply rail); band orientation confirms polarity during automated placement and visual inspection. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over lifetime and temperature, eliminating parameter drift seen in epoxy-passivated alternatives. |
| Low incremental surge resistance | Minimizes VC rise under high di/dt transients, improving protection effectiveness for fast-rising ESD or load-dump events. |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow processing at 260 °C peak without baking, reducing manufacturing cost and complexity. |
| AEC-Q101 qualification | Validates long-term reliability in automotive applications including engine control, body electronics, and ADAS sensor interfaces. |
| RoHS-compliant E3 suffix | Meets industrial-grade environmental compliance without halogen restrictions; suitable for global OEM and Tier-1 supply chains. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 5 V microcontroller power inputs in engine control units against ISO 7637-2 load-dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed directly at MCU VDD pin to shunt surge energy to ground before it reaches silicon. Use Value: 11.2 V clamping voltage ensures MCU remains below absolute maximum ratings during 133.9 A surges, preventing latch-up or permanent damage. | Use Scenario: Safeguarding analog output lines of pressure sensors in factory automation PLC I/O modules exposed to relay coil switching noise. IC Role / Device Role / Timing Role: Fast-response transient suppressor installed at sensor connector interface to clamp induced spikes before they corrupt 4–20 mA or 0–10 V signals. Use Value: Sub-1 ns response time and 1000 µA leakage at 6.5 V preserve signal integrity while blocking >1 kV transients without loading the precision analog path. |
| Consumer USB Port Protection | Telecom DC Power Input Protection |
Use Scenario: Overvoltage defense for USB-C power delivery circuits in portable medical devices subjected to accidental 12 V adapter misconnection. IC Role / Device Role / Timing Role: Standoff-limited TVS on VBUS line that conducts only above 6.5 V, allowing normal 5 V operation while clamping fault conditions. Use Value: Tight 7.22–7.98 V VBR window prevents false triggering during USB PD negotiation while ensuring reliable activation during overvoltage faults. | Use Scenario: Front-end surge suppression for 48 V DC input of telecom base station remote radio units located in lightning-prone outdoor cabinets. IC Role / Device Role / Timing Role: Primary-level TVS in series with upstream fuse and secondary MOV, absorbing initial 1500 W surge energy before downstream components engage. Use Value: 1500 W PPPM rating and DO-215AB thermal mass enable repeated surge handling without degradation, extending field service life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.5A-E3/57T | Same VWM/VBR/VC specs but in SMA (DO-214AC) package; 1000 W PPPM (vs. 1500 W); RθJA = 85 °C/W | Limited to lower-energy transients; less thermal margin in high-power-density layouts | Select when board space constraints favor smaller SMA footprint and surge energy is ≤1000 W. |
| SMCJ6.5A-E3/9AT | Same SMCG package and 1500 W rating, but higher VBR (7.22–8.33 V) and VC (11.5 V); AEC-Q101 qualified | Wider VBR tolerance increases risk of nuisance clamping in tight-margin 5 V systems | Prefer for designs requiring broader process variation margin or compatibility with legacy SMCJ layout footprints. |
Compared with SMAJ6.5A-E3/57T and SMCJ6.5A-E3/9AT, the SMCG6.5A-E3/9AT delivers optimal balance of clamping precision (tightest VBR window), thermal capability (75 °C/W), and surge capacity (1500 W) in the DO-215AB form factor - making it preferred for next-generation automotive and industrial modules demanding both reliability and design margin.
Availability
SMCG6.5A-E3/9AT is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom DC power inputs requiring stable component supply with AEC-Q101 validation and RoHS compliance.
Supply support for SMCG6.5A-E3/9AT 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, MOSFETs, and protection devices with emphasis on high-reliability, automotive-qualified, and industry-standard solutions.
The SMCG series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where failure modes must be eliminated through AEC-Q101 validation and robust thermal design.
FAQ
What is the clamping voltage of SMCG6.5A-E3/9AT at its rated peak pulse current?
The SMCG6.5A-E3/9AT has a maximum clamping voltage (VC) of 11.2 V at 133.9 A peak pulse current (IPPM), measured under the standardized 10/1000 µs waveform. This value is confirmed in the Vishay datasheet (Document Number: 88457, page 2) and defines the upper voltage limit imposed on protected circuitry during surge events. The SMCG6.5A-E3/9AT maintains this clamping performance across its full operating temperature range.
Is SMCG6.5A-E3/9AT suitable for automotive applications?
Yes, SMCG6.5A-E3/9AT is AEC-Q101 qualified per the Vishay datasheet (page 1, FEATURES section and page 3, Thermal Characteristics note), confirming its reliability for automotive use cases including engine control, body electronics, and ADAS sensor protection. Its DO-215AB package, MSL Level 1 rating, and –55 °C to +150 °C operating range further support under-hood and chassis-mounted deployments. The SMCG6.5A-E3/9AT meets all required stress tests including temperature cycling and high-temperature reverse bias.
What does the "E3/9AT" suffix indicate in SMCG6.5A-E3/9AT?
The "E3" suffix denotes RoHS-compliant, industrial-grade construction with matte tin-plated leads, while "9AT" specifies the packaging format: 13-inch diameter plastic tape and reel containing 3500 units. This differs from "57T" (7-inch reel, 850 units). Both comply with J-STD-002 solderability and JESD 201 Class 2 whisker resistance. The SMCG6.5A-E3/9AT is not halogen-free or AEC-Q101 enhanced - those variants use HE3/HM3 suffixes.
How does SMCG6.5A-E3/9AT differ from bidirectional TVS diodes like SMCG6.5CA?
The SMCG6.5A-E3/9AT is unidirectional, with polarity marked by a cathode band and intended for DC line protection where reverse voltage is blocked. In contrast, SMCG6.5CA is bidirectional, has no polarity marking, and protects AC or dual-polarity signals. Their VBR and VC values differ: SMCG6.5A-E3/9AT has VBR = 7.22–7.98 V and VC = 11.2 V, while SMCG6.5CA has higher VBR (7.22–8.60 V) and VC (12.0 V) due to symmetrical structure. The SMCG6.5A-E3/9AT cannot substitute for SMCG6.5CA in AC-coupled applications.
What is the thermal resistance of SMCG6.5A-E3/9AT, and how does it affect PCB layout?
The SMCG6.5A-E3/9AT 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 the Vishay datasheet (page 3). This value assumes minimum recommended pad layout; reducing pad area increases RθJA and risks thermal runaway during sustained surge events. For reliable operation at 6.5 W steady-state dissipation, the SMCG6.5A-E3/9AT requires adequate copper pour and may need thermal vias in high-power designs.
SMCG6.5A-E3/9AT 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):
- 6.5V
- Voltage - Breakdown (Min):
- 7.22V
- Voltage - Clamping (Max) @ Ipp:
- 11.2V
- Current - Peak Pulse (10/1000µs):
- 133.9A
- 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)
SMCG6.5A-E3/9AT FAQ
1.How can I place an order for SMCG6.5A-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG6.5A-E3/9AT 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 SMCG6.5A-E3/9AT reliable?
The price and inventory of SMCG6.5A-E3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG6.5A-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG6.5A-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG6.5A-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG6.5A-E3/9AT?
SMCG6.5A-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG6.5A-E3/9AT 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 SMCG6.5A-E3/9AT?
For technical support, including SMCG6.5A-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG6.5A-E3/9AT requirements.
6.How does Aetrix verify that SMCG6.5A-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG6.5A-E3/9AT 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 SMCG6.5A-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG6.5A-E3/9AT?
All SMCG6.5A-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG6.5A-E3/9AT, 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 SMCG6.5A-E3/9AT part is unused and in its original packaging.
Return procedure for SMCG6.5A-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG6.5A-E3/9AT Tags
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