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Vishay General Semiconductor - Diodes Division SMCG7.0HE3/9AT
- Part No.:
- SMCG7.0HE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG7.0HE3/9AT.pdf
- Description:
- TVS DIODE 7VWM 13.3VC DO215AB
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMCG7.0HE3/9AT from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) in DO-215AB (SMCG) package, designed for clamping voltage transients on signal/power lines. It features 7.0 V stand-off voltage (VWM), 12.0 V maximum clamping voltage (VC) at 200 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 µs waveform - used to protect automotive sensor interfaces and industrial I/O circuits against ESD and load-switching surges.
For engineers reviewing the SMCG7.0HE3/9AT datasheet, SMCG7.0HE3/9AT pinout, SMCG7.0HE3/9AT application, or SMCG7.0HE3/9AT equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), DO-215AB mechanical dimensions, and direct alternatives for automotive-grade surge protection design-in.
Technical Context
The SMCG7.0HE3/9AT is a bi-directional TVS diode optimized for fast transient suppression without polarity sensitivity - its symmetrical breakdown behavior (VBR min/max = 7.78 V / 8.60 V at IT = 10 mA) enables use on AC-coupled or floating lines. It meets AEC-Q101 stress test requirements including temperature cycling, HTRB, and ESD (HBM ≥ 8 kV).
With low incremental surge resistance and 1500 W PPPM rating, it delivers robust clamping under repetitive or single-event surges per ISO 7637-2 and IEC 61000-4-5. Its RθJL of 15 °C/W supports reliable heat dissipation into PCB copper pads (8.0 mm × 8.0 mm per terminal), critical for sustained surge handling in engine control units and ADAS sensor modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for 5 V–12 V automotive bus lines. |
| VBR (min/max) | 7.78 V / 8.60 V at 10 mA - Confirmed breakdown threshold ensures predictable turn-on during transients without false triggering. |
| VC @ IPPM | 12.0 V at 200 A (10/1000 µs) - Clamped voltage level protects downstream ICs rated ≤ 13.2 V (e.g., CAN transceivers, LIN controllers). |
| PPPM | 1500 W - Sustains high-energy surges typical of ISO 7637-2 Pulse 1/2a/5a in 12 V vehicle systems. |
| ID @ VWM | 200 µA max - Low leakage preserves signal integrity on high-impedance sensor inputs (e.g., thermistor, potentiometer interfaces). |
| TJ max. | +150 °C - Enables operation in under-hood environments (e.g., transmission control modules, battery management sensors). |
| RθJA | 75 °C/W - Validated on 8.0 mm × 8.0 mm copper pads; informs thermal derating for >1 Hz surge repetition rates. |
Pinout & Package
DO-215AB (SMCG) surface-mount package: gull-wing leads, matte tin-plated terminals, RoHS-compliant, AEC-Q101 qualified. No polarity marking - bi-directional symmetry eliminates orientation concerns during automated placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals behave identically - no cathode band; bidirectional clamping across any two-point connection. |
| Case (exposed metal) | Thermal conduction path | Not electrically connected; serves only as heatsink interface to PCB copper pour for thermal management. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood applications including temperature cycling (-55 °C to +150 °C), HTRB, and ESD (HBM ≥ 8 kV). |
| Low clamping ratio (VC/VBR ≈ 1.44) | Minimizes overvoltage stress on protected ICs - critical for 3.3 V/5 V logic interfacing with 12 V supply domains. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns or baking requirements. |
| Glass-passivated junction | Ensures stable VBR over lifetime and resistance to humidity-induced parameter drift in harsh environments. |
| UL 94 V-0 molding compound | Meets flammability safety standards for enclosed automotive electronics enclosures and junction boxes. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting analog outputs of pressure/temperature sensors in engine control units exposed to load-dump and alternator ripple. IC Role / Device Role / Timing Role: Bi-directional clamping element placed between sensor output and microcontroller ADC input. Use Value: Limits voltage excursions to ≤12.0 V during 100 V/50 ms load-dump events, preserving ADC linearity and preventing latch-up. |
Use Scenario: Safeguarding RS-485 transceiver data lines in factory automation PLCs subject to inductive switching noise. IC Role / Device Role / Timing Role: Line-to-line TVS on differential pair, absorbing common-mode surges up to 1500 W. Use Value: Maintains signal integrity by clamping transients within 1 ns response time, avoiding communication errors or transceiver damage. |
| Automotive Lighting Control | Consumer Power Adapter Input |
Use Scenario: Suppressing switching spikes on LED driver MOSFET gate drive lines in adaptive headlight modules. IC Role / Device Role / Timing Role: Gate-to-source TVS protecting low-threshold logic-level MOSFETs from dv/dt-induced turn-on. Use Value: Withstands 200 A surge peaks while limiting gate voltage to 12.0 V, preventing unintended FET conduction and thermal runaway. |
Use Scenario: Input-stage surge protection for USB-C PD adapters subjected to lightning-induced surges on AC mains input. IC Role / Device Role / Timing Role: Primary clamping device across bridge rectifier output, shunting energy before bulk capacitor. Use Value: Absorbs 1500 W pulses without degradation, enabling compliance with IEC 61000-4-5 Level 3 (2 kV/12 Ω) immunity testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.0AHE3/A | Uni-directional; VWM = 7.0 V, VC = 12.0 V @ 200 A, but requires correct polarity orientation and lacks bi-directional symmetry. | Suitable only where circuit topology enforces unidirectional bias (e.g., DC power rail); not usable on AC or floating lines. | Select SMAJ7.0AHE3/A only when polarity is fixed and board layout allows cathode alignment; SMCG7.0HE3/9AT avoids orientation risk. |
| 1.5KE7.0CA | Through-hole DO-201 package; same VWM/VC specs but higher RθJA (100 °C/W), larger footprint, and no AEC-Q101 qualification. | Limited to non-automotive industrial or prototyping use due to lack of automotive reliability validation and manual assembly requirement. | Choose 1.5KE7.0CA only for cost-sensitive, non-automotive designs where surface-mount constraints are absent and qualification is not required. |
Compared with SMAJ7.0AHE3/A and 1.5KE7.0CA, SMCG7.0HE3/9AT uniquely combines bi-directional operation, AEC-Q101 qualification, and DO-215AB SMT compatibility - making it the only option for automated, high-reliability automotive sensor interface protection without polarity dependency or through-hole assembly.
Availability
SMCG7.0HE3/9AT is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface hardening, and consumer power adapter surge immunity requiring stable component supply and full traceability.
Supply support for SMCG7.0HE3/9AT 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, automotive qualification, and high-volume manufacturability.
The SMCG series was engineered specifically for AEC-Q101-compliant transient suppression in automotive powertrain and body electronics - prioritizing low clamping voltage, bi-directional symmetry, and robust thermal performance in compact SMT packages.
FAQ
What is the clamping voltage of SMCG7.0HE3/9AT under a 200 A surge?
The SMCG7.0HE3/9AT has a maximum clamping voltage (VC) of 12.0 V when subjected to a 200 A peak pulse current with a 10/1000 µs waveform. This value is measured and guaranteed per the Vishay datasheet (Document Number: 88457), ensuring predictable overvoltage protection for downstream components such as 12 V-rated CAN transceivers or microcontroller I/O pins. The SMCG7.0HE3/9AT maintains this clamping performance across its full operating temperature range of -55 °C to +150 °C.
Is SMCG7.0HE3/9AT qualified for automotive applications?
Yes, SMCG7.0HE3/9AT is explicitly AEC-Q101 qualified, as confirmed by the "HE3" suffix and documentation in Vishay's datasheet (Revision: 14-Mar-12). It passes all required stress tests including temperature cycling, high-temperature reverse bias (HTRB), and human-body model ESD (≥8 kV). This qualification makes SMCG7.0HE3/9AT suitable for under-hood and chassis-mounted automotive systems where reliability under thermal and electrical stress is mandatory.
Does SMCG7.0HE3/9AT have polarity markings?
No, SMCG7.0HE3/9AT has no polarity markings because it is a bi-directional TVS diode. Its DO-215AB package is symmetric, with identical electrical behavior between both terminals - meaning either end can serve as anode or cathode depending on transient polarity. This eliminates orientation errors during automated placement and simplifies layout for AC-coupled or floating signal paths, unlike uni-directional variants such as SMCG7.0A.
What is the thermal resistance of SMCG7.0HE3/9AT?
The SMCG7.0HE3/9AT 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. Its junction-to-lead resistance (RθJL) is 15 °C/W, indicating efficient heat transfer into the PCB. These values directly inform derating curves for repetitive surge conditions and must be applied when designing for ambient temperatures above 25 °C or multi-pulse scenarios.
How does SMCG7.0HE3/9AT differ from SMCG7.0A?
SMCG7.0HE3/9AT is the AEC-Q101-qualified, bi-directional version, while SMCG7.0A is uni-directional and commercial-grade. The "CA" suffix in SMCG7.0CA denotes bi-directionality, and "HE3" confirms automotive qualification and RoHS compliance. SMCG7.0HE3/9AT shares the same VWM (7.0 V), VC (12.0 V), and PPPM (1500 W) but adds bi-directional symmetry and extended reliability testing - making it appropriate for automotive sensor lines where polarity cannot be assumed, unlike SMCG7.0A which requires cathode alignment.
SMCG7.0HE3/9AT 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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 13.3V
- Current - Peak Pulse (10/1000µs):
- 112.8A
- 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)
SMCG7.0HE3/9AT FAQ
1.How can I place an order for SMCG7.0HE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG7.0HE3/9AT 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 SMCG7.0HE3/9AT reliable?
The price and inventory of SMCG7.0HE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG7.0HE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG7.0HE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG7.0HE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG7.0HE3/9AT?
SMCG7.0HE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG7.0HE3/9AT 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 SMCG7.0HE3/9AT?
For technical support, including SMCG7.0HE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG7.0HE3/9AT requirements.
6.How does Aetrix verify that SMCG7.0HE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG7.0HE3/9AT 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 SMCG7.0HE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG7.0HE3/9AT?
All SMCG7.0HE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG7.0HE3/9AT, 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 SMCG7.0HE3/9AT part is unused and in its original packaging.
Return procedure for SMCG7.0HE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG7.0HE3/9AT Tags
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