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Vishay General Semiconductor - Diodes Division SMCG6.5AHE3/57T
- Part No.:
- SMCG6.5AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG6.5AHE3/57T.pdf
- Description:
- TVS DIODE 6.5VWM 11.2VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,011
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Product details
Overview
SMCG6.5AHE3/57T from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, designed for robust overvoltage protection of sensitive electronics. It features 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 - deployed in automotive sensor signal lines and industrial I/O interfaces.
For engineers reviewing the SMCG6.5AHE3/57T datasheet, SMCG6.5AHE3/57T pinout, SMCG6.5AHE3/57T application, or SMCG6.5AHE3/57T equivalent, key selection criteria include AEC-Q101 qualification, low clamping ratio (VC/VBR ≈ 1.45), MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This TVS diode operates as a unidirectional clamping device, leveraging a glass-passivated silicon junction to achieve sub-nanosecond response time and low incremental surge resistance. Its electrical behavior is defined by precise VBR tolerance (±5%), tight VC consistency under standardized 10/1000 µs surge, and thermal derating per Figure 2 - enabling reliable protection against inductive switching transients and ESD events up to ±30 kV (IEC 61000-4-2).
The SMCG6.5AHE3/57T is rated for continuous operation from –55 °C to +150 °C junction temperature, with RθJA = 75 °C/W and RθJL = 15 °C/W. Its DO-215AB package supports high-current surge handling (200 A IFSM) while maintaining RoHS compliance and AEC-Q101 qualification for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.5 V - maximum reverse working voltage before clamping begins; ensures no interference with normal 5 V or 6.5 V logic/sensor bias rails. |
| VBR (min/max) | 7.22 V / 7.98 V at 10 mA - tight breakdown window enables predictable turn-on and minimizes false triggering during voltage ripple. |
| VC @ IPPM | 11.2 V at 133.9 A - clamping voltage limits downstream IC stress during 1500 W transient events; clamping ratio = 1.45. |
| PPPM | 1500 W (10/1000 µs) - defines maximum single-event surge energy absorption capability without failure. |
| ID @ VWM | 500 µA - low leakage preserves signal integrity and battery life in always-on sensor circuits. |
| TJ max. | +150 °C - supports under-hood automotive and industrial environments where ambient temperatures exceed 105 °C. |
| Package | SMCG (DO-215AB) - surface-mount gull-wing package with matte tin leads, optimized for reflow soldering and automated placement. |
Pinout & Package
SMCG6.5AHE3/57T uses the SMCG (DO-215AB) package: a 2-terminal, gull-wing leaded surface-mount outline with cathode band marking. The case conforms to JEDEC DO-215AB mechanical dimensions (0.220–0.245" body length, 0.115–0.125" width, 0.095" height), UL 94 V-0 molding compound, and J-STD-002/JESD 22-B102 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward conduction mode; connected to protected circuit ground or low-side reference. | Provides return path during clamping; must be routed to lowest-impedance ground plane to minimize VPEAK rise during surge. |
| Cathode | Current exit terminal during reverse-biased clamping; marked with band on package body. | Connected to protected line (e.g., CAN_H, LIN, sensor VOUT); polarity must match system grounding scheme to avoid short-circuit. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units, ADAS sensors, and body electronics - meets stress test requirements for temperature cycling, HTRB, and ESD. |
| Low clamping ratio (VC/VBR) | ≈1.45 - reduces voltage overshoot across protected ICs compared to higher-ratio TVS devices, improving margin for 3.3 V/5 V interface ICs. |
| MSL Level 1 rating | Unlimited floor life at ≤30 °C/85 % RH - eliminates bake requirements prior to reflow, reducing manufacturing cost and process complexity. |
| Glass passivated junction | Enhances long-term stability and leakage performance over temperature and lifetime vs. epoxy-passivated alternatives. |
| 1500 W peak pulse power | Withstands severe load-dump and ISO 7637-2 Pulse 5a transients in 12 V automotive systems without degradation. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine bay modules exposed to ISO 7637-2 transients and ESD. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between sensor output and microcontroller ADC input. Use Value: Limits transient voltage to ≤11.2 V, preserving ADC accuracy and preventing latch-up in 5 V-tolerant SAR converters. |
Use Scenario: Safeguarding RS-485 transceiver data lines in factory automation PLCs subject to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Line-side TVS mounted directly at connector entry point, ahead of transceiver ESD diodes. Use Value: Absorbs >1000 W surge energy before clamping, reducing stress on integrated transceiver protection and extending system uptime. |
| Consumer Power Adapter Input | Automotive LIN Bus Node |
|
Use Scenario: Secondary-side overvoltage suppression in USB-C PD adapters where 5–20 V rail transients may damage controller ICs. IC Role / Device Role / Timing Role: Standoff-rated TVS on VBUS line downstream of DC-DC converter output filter. Use Value: Maintains 6.5 V working voltage while clamping 1500 W spikes - compatible with tight 5 V ±5 % regulation tolerances. |
Use Scenario: Protecting LIN transceiver pins (LIN_H) in door module ECUs subjected to battery disconnect/load dump events. IC Role / Device Role / Timing Role: Unidirectional TVS tied between LIN_H and ground, with cathode to LIN_H. Use Value: Clamps to 11.2 V within nanoseconds, ensuring LIN physical layer remains functional after 100 V/50 ms transients per ISO 16750-2. |
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-E3/52T | Same VWM (6.5 V), but SMA (DO-214AC) package; lower PPPM (400 W); RθJA = 110 °C/W. | Limited to lower-energy transients (e.g., IEC 61000-4-5 Level 3); unsuitable for automotive load dump. | Select when board space is constrained and surge energy is <500 W; verify thermal margin with smaller pad layout. |
| 1.5SMC6.5AHE3_A/H | Same VWM and DO-215AB package, but 1500 W rating and identical clamping (11.2 V); differs only in marking code and tape/reel packaging. | Functionally interchangeable in all electrical and thermal respects; validated AEC-Q101 equivalent. | Preferred for dual-sourcing where identical form-fit-function and qualification are required without redesign. |
Compared with SMAJ6.5A-E3/52T, SMCG6.5AHE3/57T delivers 3.75× higher surge power handling and superior thermal dissipation; versus 1.5SMC6.5AHE3_A/H, it offers identical protection performance with verified automotive qualification and consistent reel packaging for production traceability.
Availability
SMCG6.5AHE3/57T is available at Aetrix Electronics and suitable for automotive sensor protection, industrial RS-485 interface hardening, and consumer power adapter secondary-side surge suppression requiring stable component supply and AEC-Q101 assurance.
Supply support for SMCG6.5AHE3/57T 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMCG series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where AEC-Q101 compliance, low clamping, and robust thermal performance are mandatory.
FAQ
What is the maximum clamping voltage of SMCG6.5AHE3/57T under a 10/1000 µs surge?
The SMCG6.5AHE3/57T has a maximum clamping voltage (VC) of 11.2 V when subjected to its rated peak pulse current of 133.9 A using the standard 10/1000 µs waveform. This value is measured per Figure 3 in Vishay document 88457 and reflects worst-case clamping performance at TA = 25 °C on the recommended 8.0 mm × 8.0 mm copper pad layout. The SMCG6.5AHE3/57T maintains this clamping level across its full operating temperature range.
Is SMCG6.5AHE3/57T suitable for bidirectional signal line protection?
No - SMCG6.5AHE3/57T is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. For bidirectional protection, Vishay specifies the "CA" suffix (e.g., SMCG6.5CA). Using SMCG6.5AHE3/57T on AC or differential lines risks forward conduction during negative excursions, potentially damaging the device or circuit. Always confirm polarity alignment before deploying SMCG6.5AHE3/57T.
Does SMCG6.5AHE3/57T require PCB layout derating for thermal performance?
Yes - the specified RθJA = 75 °C/W assumes mounting on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, as noted in the "Notes" section of the datasheet. Reducing pad size or omitting internal ground planes increases junction temperature and reduces safe operating area. For continuous 6.5 W dissipation, SMCG6.5AHE3/57T requires at least two 8 mm² external copper pads with thermal vias to inner layers to maintain TJ ≤ 150 °C at TA = 50 °C.
What does the "HE3" suffix signify in SMCG6.5AHE3/57T?
The "HE3" suffix in SMCG6.5AHE3/57T indicates RoHS-compliant construction with AEC-Q101 qualification - distinguishing it from industrial-grade "E3" (RoHS, non-automotive) and halogen-free "HM3" variants. This suffix confirms that the SMCG6.5AHE3/57T has passed stress tests including temperature cycling, high-temperature reverse bias, and ESD per AEC-Q101 Rev D, making it suitable for automotive under-hood and chassis applications.
Can SMCG6.5AHE3/57T replace P6SMB6.5A in an existing design?
No - although both are 6.5 V standoff TVS diodes, SMCG6.5AHE3/57T uses the DO-215AB (SMCG) package with gull-wing leads, whereas P6SMB6.5A uses DO-214AA (SMB) with flat leads. Their footprints, thermal paths, and surge ratings differ significantly: P6SMB6.5A is rated for 600 W PPPM vs. 1500 W for SMCG6.5AHE3/57T. Direct replacement would require PCB layout revision and thermal validation. The SMCG6.5AHE3/57T is not a drop-in substitute for P6SMB6.5A.
SMCG6.5AHE3/57T 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCG)
SMCG6.5AHE3/57T FAQ
1.How can I place an order for SMCG6.5AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG6.5AHE3/57T 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 SMCG6.5AHE3/57T reliable?
The price and inventory of SMCG6.5AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG6.5AHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCG6.5AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG6.5AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG6.5AHE3/57T?
SMCG6.5AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG6.5AHE3/57T 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 SMCG6.5AHE3/57T?
For technical support, including SMCG6.5AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG6.5AHE3/57T requirements.
6.How does Aetrix verify that SMCG6.5AHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG6.5AHE3/57T 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 SMCG6.5AHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCG6.5AHE3/57T?
All SMCG6.5AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG6.5AHE3/57T, 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 SMCG6.5AHE3/57T part is unused and in its original packaging.
Return procedure for SMCG6.5AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG6.5AHE3/57T Tags
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