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Vishay General Semiconductor - Diodes Division SMCG6.5CA-E3/9AT
- Part No.:
- SMCG6.5CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG6.5CA-E3/9AT.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,049
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Product details
Overview
SMCG6.5CA-E3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) in the SMCG (DO-215AB) package, designed for clamping voltage transients on signal and power lines. It features a 6.5 V stand-off voltage (VWM), 7.22–7.98 V breakdown voltage (VBR) at 10 mA, 1500 W peak pulse power (10/1000 µs), 133.9 A peak pulse current (IPPM), and clamps to ≤11.2 V at rated surge. It is AEC-Q101 qualified and used in automotive sensor protection.
For engineers reviewing the SMCG6.5CA-E3/9AT datasheet, SMCG6.5CA-E3/9AT pinout, SMCG6.5CA-E3/9AT application, or SMCG6.5CA-E3/9AT equivalent, key selection criteria include bidirectional clamping capability, 1500 W surge rating, DO-215AB thermal performance (RθJA = 75 °C/W), AEC-Q101 qualification, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This device operates as a bidirectional avalanche diode, symmetrically suppressing transients in both polarities without polarity marking. Its glass-passivated junction ensures stable VBR and low leakage (<500 µA at VWM), while its low incremental surge resistance enables effective clamping under fast-rising 10/1000 µs surges.
The SMCG6.5CA-E3/9AT is thermally optimized for surface-mount use: RθJL = 15 °C/W to lead and RθJA = 75 °C/W on standard 0.31" × 0.31" copper pads. It meets J-STD-020 MSL Level 1 and supports reflow up to 260 °C peak, making it suitable for high-reliability industrial and automotive PCB assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - Maximum continuous reverse stand-off voltage before clamping begins; defines safe operating margin below breakdown |
| VBR (min/max) | 7.22 V / 7.98 V at IT = 10 mA - Confirmed bidirectional breakdown range; ensures predictable turn-on across production lot |
| VC @ IPPM | ≤11.2 V at 133.9 A - Clamping voltage under full 1500 W surge; limits downstream IC stress during ESD/EFT events |
| PPPM | 1500 W (10/1000 µs) - Peak transient energy handling capacity; validated per ANSI/IEEE C62.35 waveform |
| ID @ VWM | ≤500 µA - Reverse leakage at rated stand-off; ensures minimal quiescent power loss in always-on protection circuits |
| TJ max. | +150 °C - Maximum junction temperature; supports operation in under-hood automotive environments |
Pinout & Package
Package: SMCG (DO-215AB) - Surface-mount, low-profile gull-wing package with matte tin-plated leads; meets UL 94 V-0, MSL Level 1, and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; symmetrical with cathode for bidirectional operation | No polarity marking required; terminals are functionally identical for AC transient suppression |
| Cathode | Current exit terminal in forward bias; symmetrical with anode for bidirectional operation | Identical electrical behavior to anode; device conducts equally in either direction above VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness per stress test plan |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term leakage stability under thermal and humidity stress |
| Low incremental surge resistance | Enables tighter clamping (VC − VBR ≈ 3.5 V) versus competing TVS diodes, reducing protected circuit overvoltage |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow processing at 260 °C peak, simplifying SMT line integration |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Lines |
|---|---|
Use Scenario: Protecting ABS wheel speed sensors and airbag crash sensors from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector interface to shunt transients before reaching ASIC input pins. Use Value: Limits voltage to ≤11.2 V during 1500 W surges, preventing latch-up or gate oxide damage in 5 V-tolerant sensor interfaces. | Use Scenario: Guarding differential CAN_H/CAN_L lines against ESD (IEC 61000-4-2) and burst noise in factory automation PLCs. IC Role / Device Role / Timing Role: Low-capacitance (typ. <50 pF) bidirectional TVS placed across bus pair to clamp common-mode transients without distorting signal integrity. Use Value: Maintains CAN signal rise/fall times due to sub-12 V clamping and minimal parasitic capacitance, preserving 1 Mbps timing margins. |
| Consumer Power Adapter Inputs | Telecom DSL Line Interfaces |
Use Scenario: Safeguarding AC-DC adapter primary-side rectifier and controller ICs from lightning-induced surges on mains input. IC Role / Device Role / Timing Role: First-line transient suppressor mounted at AC inlet, coordinated with MOV and fuse for staged overvoltage protection. Use Value: Absorbs 1500 W surges without degradation, enabling compact design vs. higher-power alternatives requiring larger footprints. | Use Scenario: Protecting ADSL/VDSL line drivers and receivers from induced surges on outdoor copper pairs exposed to lightning. IC Role / Device Role / Timing Role: Bidirectional TVS placed between tip/ring and ground on line interface transformer secondary side. Use Value: Withstands repeated 10/1000 µs surges up to 133.9 A while maintaining ≤11.2 V clamping, ensuring modem uptime during storm conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.5CA | Same VWM (6.5 V) and PPPM (1500 W), but in SMA (DO-214AC) package; RθJA = 85 °C/W vs. 75 °C/W | Lower thermal efficiency requires larger copper area for same power derating; less suited for dense automotive modules | Select SMAJ6.5CA only if existing layout uses SMA footprint and thermal margin allows higher junction temp rise |
| 1.5KE6.8CA | Higher VWM (6.8 V), same bidirectional 1500 W rating, but through-hole DO-201 package; no AEC-Q101 qualification | Not suitable for automated SMT or automotive qualification requirements; limited to legacy industrial designs | Choose 1.5KE6.8CA only for cost-sensitive, non-automotive, through-hole applications where AEC-Q101 is not mandated |
Compared with SMAJ6.5CA and 1.5KE6.8CA, the SMCG6.5CA-E3/9AT delivers superior thermal performance (75 °C/W), AEC-Q101 compliance, and SMT compatibility-making it the preferred choice for new automotive and high-density industrial designs requiring reliable, automated assembly.
Availability
SMCG6.5CA-E3/9AT is available at Aetrix Electronics and suitable for automotive sensor protection, industrial CAN bus lines, and telecom DSL line interfaces requiring stable component supply and AEC-Q101 assurance.
Supply support for SMCG6.5CA-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive qualification.
The SMCG series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy, bidirectional transient suppression in space-constrained automotive and industrial environments where AEC-Q101 compliance and low-profile SMT integration are mandatory.
FAQ
What is the clamping voltage of the SMCG6.5CA-E3/9AT under maximum rated surge current?
The SMCG6.5CA-E3/9AT clamps to a maximum of 11.2 V when subjected to its rated peak pulse current of 133.9 A (10/1000 µs waveform). This value is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet revision 09-Jan-2024. The low clamping ratio (VC/VBR ≈ 1.45) reflects efficient transient suppression critical for protecting 5 V logic interfaces. SMCG6.5CA-E3/9AT maintains this performance across its full operating temperature range.
Is the SMCG6.5CA-E3/9AT suitable for automotive applications?
Yes, the SMCG6.5CA-E3/9AT is AEC-Q101 qualified and explicitly rated for automotive use per Vishay documentation. It undergoes stress testing including temperature cycling, high-temperature reverse bias (HTRB), and ESD per the AEC-Q101 standard. Its DO-215AB package supports reflow at 260 °C, and its 150 °C maximum junction temperature aligns with under-hood requirements. SMCG6.5CA-E3/9AT is deployed in automotive sensor units, body control modules, and infotainment interfaces.
How does the bidirectional configuration of SMCG6.5CA-E3/9AT affect its mounting and circuit design?
The SMCG6.5CA-E3/9AT has no polarity marking and functions identically in both directions, eliminating orientation concerns during placement. In circuit design, it is connected across the protected nodes (e.g., CAN_H to CAN_L or tip to ring) without regard to anode/cathode assignment. This symmetry simplifies layout, reduces BOM complexity, and avoids field failures due to incorrect orientation-unlike unidirectional TVS devices such as SMCG6.5A. SMCG6.5CA-E3/9AT's bidirectional behavior is verified across its full VBR range (7.22–7.98 V).
What is the thermal resistance profile of SMCG6.5CA-E3/9AT, and how does it impact PCB layout?
The SMCG6.5CA-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, and junction-to-lead resistance (RθJL) of 15 °C/W. To achieve rated 6.5 W power dissipation at TA = 50 °C, designers must allocate sufficient copper area and consider internal layer thermal vias. Reducing pad size increases RθJA, requiring derating per Figure 2 in the datasheet. SMCG6.5CA-E3/9AT's low RθJA enables compact layouts in tight automotive ECUs.
Does SMCG6.5CA-E3/9AT meet RoHS and halogen-free requirements?
Yes, the "E3" suffix in SMCG6.5CA-E3/9AT indicates RoHS-compliant, industrial-grade construction with matte tin-plated leads. It meets JESD 201 Class 2 whisker resistance and UL 94 V-0 flammability. While not halogen-free (which would require "M3" suffix), SMCG6.5CA-E3/9AT complies fully with EU RoHS Directive 2011/65/EU and is suitable for consumer, industrial, and automotive applications where halogen-free is not mandated. Vishay confirms material categorization per doc# 99912.
SMCG6.5CA-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:
- -
- Bidirectional Channels:
- 1
- 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)
SMCG6.5CA-E3/9AT FAQ
1.How can I place an order for SMCG6.5CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG6.5CA-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 SMCG6.5CA-E3/9AT reliable?
The price and inventory of SMCG6.5CA-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 SMCG6.5CA-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG6.5CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG6.5CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG6.5CA-E3/9AT?
SMCG6.5CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG6.5CA-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 SMCG6.5CA-E3/9AT?
For technical support, including SMCG6.5CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG6.5CA-E3/9AT requirements.
6.How does Aetrix verify that SMCG6.5CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG6.5CA-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 SMCG6.5CA-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG6.5CA-E3/9AT?
All SMCG6.5CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG6.5CA-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 SMCG6.5CA-E3/9AT part is unused and in its original packaging.
Return procedure for SMCG6.5CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG6.5CA-E3/9AT Tags
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