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Vishay General Semiconductor - Diodes Division SMCG7.5CAHE3/57T
- Part No.:
- SMCG7.5CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG7.5CAHE3/57T.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,510
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Product details
Overview
SMCG7.5CAHE3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, designed for robust overvoltage protection of sensitive electronics. It features a 7.5 V stand-off voltage (VWM), 8.33–9.21 V breakdown voltage (VBR) at 1.0 mA test current, 1500 W peak pulse power (PPPM), and clamps to ≤12.9 V at 116.3 A peak pulse current (IPPM) under 10/1000 µs waveform - ideal for automotive sensor line protection.
For engineers reviewing the SMCG7.5CAHE3/57T datasheet, SMCG7.5CAHE3/57T pinout, SMCG7.5CAHE3/57T application, or SMCG7.5CAHE3/57T equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification, 1500 W surge capability, low clamping ratio (VC/VBR ≈ 1.55), and DO-215AB thermal performance with RθJA = 75 °C/W.
Technical Context
This device operates as a voltage-clamped crowbar during transients, leveraging an avalanche junction to limit reverse voltage across protected lines. Its bidirectional structure ensures symmetrical clamping in both polarities without polarity marking, enabling use on AC-coupled or floating signal paths.
Designed for high-reliability automotive applications, it meets AEC-Q101 stress testing requirements and supports operation from –55 °C to +150 °C junction temperature. The glass-passivated chip junction and matte tin-plated leads ensure long-term solderability and resistance to environmental degradation per J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 8.33 V / 9.21 V at 1.0 mA - defines reliable avalanche initiation window for predictable turn-on |
| VC @ IPPM | ≤12.9 V at 116.3 A - clamping voltage under 10/1000 µs surge, limiting stress on downstream ICs |
| PPPM | 1500 W - peak transient energy handling capacity, critical for ISO 7637-2 pulse 5a/b compliance |
| TJ max | +150 °C - enables under-hood automotive deployment without derating penalties |
| RθJA | 75 °C/W - thermal resistance with 8.0 mm × 8.0 mm copper pads, informs PCB thermal layout requirements |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including HTGB, HTRB, and temperature cycling |
Pinout & Package
Package: SMCG (DO-215AB) - surface-mount, low-profile gull-wing leaded case with 0.310" × 0.400" footprint, UL 94 V-0 molding compound, and no polarity marking for bidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative half-cycle) | One terminal of symmetrical avalanche junction; accepts surge current in either direction |
| Cathode | Transient current entry (positive half-cycle) | Second terminal of symmetrical avalanche junction; functionally identical to Anode in bidirectional mode |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses, or ungrounded lines without polarity concerns |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS modules requiring zero-failure field reliability |
| 1500 W peak pulse rating | Withstands ISO 7637-2 Pulse 5a (50 V, 100 ms) and Pulse 5b (100 V, 400 ms) without degradation |
| Low clamping ratio (VC/VBR ≈ 1.55) | Minimizes voltage overshoot during fast transients, reducing risk of latch-up in 3.3 V/5 V logic interfaces |
| MSL Level 1 (260 °C peak) | Supports standard SMT reflow profiles without moisture sensitivity concerns or baking requirements |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine control units exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed directly at connector entry point to shunt transients before reaching ADC input or signal conditioner. Use Value: Prevents sensor signal corruption and microcontroller reset events by limiting transient voltage to ≤12.9 V during 116 A surges. | Use Scenario: Safeguarding CANH/CANL differential pair against ESD and coupled surges in factory automation gateways and motor drives. IC Role / Device Role / Timing Role: Bidirectional clamping device mounted across CAN bus lines to maintain signal integrity during ±8 kV contact ESD (IEC 61000-4-2) and burst events. Use Value: Maintains CAN bit timing stability by clamping common-mode transients without adding capacitance that degrades >1 Mbps signaling. |
| Consumer USB Type-C Port | Telecom DSL Line Interface |
Use Scenario: Overvoltage protection for VBUS and CC lines in automotive infotainment USB-C ports subject to hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Bidirectional TVS placed inline with USB-C CC detection path and VBUS rail to absorb 15 kV air-gap ESD pulses. Use Value: Ensures CC logic-level recognition remains functional after repeated ESD strikes due to low leakage (<1 μA at 7.5 V). | Use Scenario: Primary protection for DSL line drivers interfacing with outside plant wiring vulnerable to lightning-induced surges. IC Role / Device Role / Timing Role: First-stage crowbar device on twisted-pair inputs to limit surge energy delivered to secondary protection and line driver ICs. Use Value: Absorbs up to 1500 W of surge energy while maintaining <12.9 V clamping, preventing latch-up in 5 V line interface ASICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.5CA | Same VWM (7.5 V) and bidirectional configuration, but lower PPPM (400 W) and larger SMA (DO-214AC) package | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5 compliance | Select when cost or board space constraints outweigh surge margin requirements |
| 1.5KE7.5CA | Higher PPPM (1500 W) but axial-leaded DO-201AD package; not surface-mountable | Requires through-hole assembly; incompatible with automated SMT lines and high-density layouts | Choose only for legacy through-hole designs where rework to SMT is impractical |
Compared with SMAJ7.5CA and 1.5KE7.5CA, SMCG7.5CAHE3/57T delivers identical surge rating in a smaller, AEC-Q101-qualified SMT package with superior thermal resistance - making it the optimal choice for new automotive and industrial designs requiring high reliability and automated manufacturing.
Availability
SMCG7.5CAHE3/57T is available at Aetrix Electronics and suitable for automotive sensor protection, industrial CAN bus interface, and telecom DSL line protection requiring stable component supply and full AEC-Q101 traceability.
Supply support for SMCG7.5CAHE3/57T 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 automotive, industrial, and computing applications.
The SMCG series is engineered specifically for high-power transient suppression in harsh environments, combining AEC-Q101 qualification, low-profile SMT packaging, and precise bidirectional clamping for next-generation vehicle electronics and ruggedized industrial systems.
FAQ
What is the clamping voltage of SMCG7.5CAHE3/57T under a 10/1000 µs surge?
The SMCG7.5CAHE3/57T clamps to a maximum of 12.9 V when subjected to its rated peak pulse current of 116.3 A under the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's datasheet revision 09-Jan-2024, ensuring predictable overvoltage limiting for downstream 5 V or 3.3 V circuitry.
Is SMCG7.5CAHE3/57T suitable for automotive applications?
Yes, SMCG7.5CAHE3/57T is AEC-Q101 qualified and explicitly rated for automotive use. Its construction - including glass-passivated junction, matte tin-plated leads, MSL Level 1 rating, and operation up to +150 °C - meets stringent automotive reliability requirements. The "HE3" suffix denotes RoHS-compliant, AEC-Q101-qualified industrial grade, confirming its suitability for engine bay and ADAS modules.
Does SMCG7.5CAHE3/57T have polarity markings?
No, SMCG7.5CAHE3/57T does not have polarity markings because it is a bidirectional TVS diode. Unlike unidirectional variants (e.g., SMCG7.5A), the CA suffix indicates symmetrical avalanche behavior in both directions, eliminating the need for cathode band identification. This simplifies layout and prevents orientation errors during automated placement.
What is the thermal resistance of SMCG7.5CAHE3/57T, and how does it affect PCB design?
The SMCG7.5CAHE3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal. This value directly informs minimum pad area requirements: reducing pad size increases thermal impedance, risking junction overheating during repetitive surges. Designers must adhere to the recommended mounting layout to sustain full 1500 W pulse rating.
How does SMCG7.5CAHE3/57T differ from SMCG7.5A?
SMCG7.5CAHE3/57T is bidirectional with symmetrical clamping in both polarities and no polarity marking, whereas SMCG7.5A is unidirectional with a cathode band and forward conduction capability. Their breakdown voltages differ slightly (SMCG7.5A: 8.33–9.21 V; SMCG7.5CAHE3/57T: same range), but only the CA version supports AC or floating-line protection without external diode pairing.
SMCG7.5CAHE3/57T 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 12.9V
- Current - Peak Pulse (10/1000µs):
- 116.3A
- 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)
SMCG7.5CAHE3/57T FAQ
1.How can I place an order for SMCG7.5CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG7.5CAHE3/57T 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 SMCG7.5CAHE3/57T reliable?
The price and inventory of SMCG7.5CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG7.5CAHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCG7.5CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG7.5CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG7.5CAHE3/57T?
SMCG7.5CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG7.5CAHE3/57T 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 SMCG7.5CAHE3/57T?
For technical support, including SMCG7.5CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG7.5CAHE3/57T requirements.
6.How does Aetrix verify that SMCG7.5CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG7.5CAHE3/57T 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 SMCG7.5CAHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCG7.5CAHE3/57T?
All SMCG7.5CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG7.5CAHE3/57T, 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 SMCG7.5CAHE3/57T part is unused and in its original packaging.
Return procedure for SMCG7.5CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG7.5CAHE3/57T Tags
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