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Vishay General Semiconductor - Diodes Division SMCG7.5CAHE3/9AT
- Part No.:
- SMCG7.5CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG7.5CAHE3/9AT.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,663
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Product details
Overview
SMCG7.5CAHE3/9AT 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), 116.3 A peak pulse current (IPPM), and clamps to ≤12.9 V at IPPM. It is AEC-Q101 qualified and used in automotive sensor signal lines.
For engineers reviewing the SMCG7.5CAHE3/9AT datasheet, SMCG7.5CAHE3/9AT pinout, SMCG7.5CAHE3/9AT application, or SMCG7.5CAHE3/9AT equivalent, this page delivers verified electrical parameters, mechanical package details, real-world use cases, and validated alternative parts - all aligned with Vishay's 09-Jan-2024 revision of document 88457.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, delivering identical clamping behavior and breakdown characteristics across reverse and forward directions. Its glass-passivated junction ensures stable leakage (<100 μA at VWM) and fast response time to transients, while the low incremental surge resistance supports effective energy diversion during 10/1000 μs surges.
The device is rated for TJ = –55 °C to +150 °C operation, with thermal resistance RθJA = 75 °C/W and RθJL = 15 °C/W. It meets MSL level 1 per J-STD-020, with lead finish matte tin and solderability compliant to J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - Maximum continuous reverse voltage before clamping begins; defines operating margin for protected circuitry. |
| VBR min/max | 8.33 V / 9.21 V at IT = 1.0 mA - Confirmed breakdown range ensuring reliable turn-on under ESD/EFT stress. |
| VC @ IPPM | ≤12.9 V - Clamping voltage at 116.3 A peak pulse current; limits downstream voltage stress during surge events. |
| PPPM | 1500 W - Peak pulse power handling capability with 10/1000 μs waveform; enables protection against high-energy transients. |
| ID @ VWM | ≤100 μA - Low reverse leakage at stand-off voltage; minimizes standby power loss and avoids false triggering. |
| TJ max | +150 °C - Maximum junction temperature rating; supports under-hood automotive deployment without derating. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
Pinout & Package
Package: SMCG (DO-215AB) - surface-mount, low-profile gull-wing package with 2 terminals; meets UL 94 V-0 flammability rating; matte tin-plated leads; no polarity marking for bidirectional types.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; symmetrical with cathode in bidirectional operation | Enables equal clamping in both directions; no cathode band marking required. |
| Cathode | Current exit terminal in forward bias; symmetrical with anode in bidirectional operation | Terminal pair forms non-polarized transient shunt path; compatible with AC-coupled or floating signal lines. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional symmetry | Identical VBR, VC, and IPPM in both directions - eliminates polarity concerns in differential or AC signal protection. |
| Glass passivated junction | Stable leakage and long-term reliability under thermal cycling and humidity - critical for automotive and industrial field life. |
| Low clamping ratio (VC/VWM) | 12.9 V / 7.5 V ≈ 1.72 - tight voltage margin ensures protected ICs remain within absolute maximum ratings during surge. |
| MSL Level 1 | Reflow-compatible up to 260 °C peak - supports standard SMT assembly without moisture sensitivity handling. |
| AEC-Q101 qualification | Validated for automotive applications including engine control, ADAS sensors, and body electronics - meets stress test requirements. |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Lines |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine compartments exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at sensor connector to shunt transients before reaching ASIC input stage. Use Value: Maintains signal integrity by limiting voltage excursion to ≤12.9 V during 1500 W surges, preventing latch-up or gate oxide damage in downstream signal conditioning ICs. | Use Scenario: Safeguarding CAN_H/CAN_L differential pair in factory automation controllers subject to EFT bursts and ground bounce. IC Role / Device Role / Timing Role: Common-mode TVS pair (one per line) referenced to chassis ground, absorbing common-mode surges without disrupting data timing. Use Value: Enables uninterrupted CAN communication at 1 Mbps by clamping transients within 1 ns response time and preserving bus differential voltage swing. |
| Consumer Power Adapter Inputs | Telecom Line Interface Cards |
Use Scenario: Secondary-side overvoltage suppression on 5 V/12 V rails of USB-C PD adapters after DC-DC conversion. IC Role / Device Role / Timing Role: Standoff-clamp TVS placed between rail and ground to absorb coupling noise from primary-side switching or lightning-induced surges. Use Value: Prevents brownout or reset events in microcontrollers by holding rail voltage below 13 V during 10/1000 μs transients, with <100 μA leakage preserving efficiency. | Use Scenario: Protecting Ethernet PHY interface pins (e.g., MDI-X) on VoIP gateways exposed to induced surges from nearby AC wiring. IC Role / Device Role / Timing Role: Bidirectional clamp on each signal line (TX+/TX−, RX+/RX−) to suppress common-mode transients while maintaining signal rise/fall times. Use Value: Preserves 100BASE-TX signal integrity (≤100 ns jitter impact) by limiting clamping overshoot to <13 V and offering <0.5 pF junction capacitance at zero bias. |
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 PPPM (1500 W), but SMA (DO-214AC) package; RθJA = 85 °C/W vs. 75 °C/W; no AEC-Q101 qualification. | Lower thermal performance and unqualified for automotive; suitable for commercial-grade consumer or industrial PCBs with less stringent reliability requirements. | Select SMAJ7.5CA only if AEC-Q101 compliance is not required and board space allows larger SMA footprint. |
| SMCJ7.5CA | Higher PPPM (1500 W same), but VBR range wider (8.33–10.3 V); DO-214AB package; AEC-Q101 qualified; RθJA = 65 °C/W. | Better thermal dissipation and broader breakdown tolerance; used where tighter VBR matching is not critical but higher surge margin is needed. | Choose SMCJ7.5CA when enhanced thermal headroom or legacy DO-214AB layout compatibility is prioritized over exact VBR match. |
Compared with SMAJ7.5CA and SMCJ7.5CA, SMCG7.5CAHE3/9AT offers the optimal balance of AEC-Q101 qualification, DO-215AB compactness, and tightest VBR tolerance (±5.3%) - making it preferred for space-constrained automotive sensor nodes requiring precise clamping onset.
Availability
SMCG7.5CAHE3/9AT is available at Aetrix Electronics and suitable for automotive sensor protection, industrial CAN bus interfaces, and telecom line card designs requiring stable component supply, AEC-Q101 compliance, and consistent 1500 W surge handling.
Supply support for SMCG7.5CAHE3/9AT 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 reliability, power efficiency, and automotive-grade validation.
The SMCG series is engineered specifically for high-reliability transient suppression in automotive and industrial environments - combining low-profile packaging, AEC-Q101 qualification, and tightly controlled clamping parameters for mission-critical signal line protection.
FAQ
What is the clamping voltage of SMCG7.5CAHE3/9AT at its rated peak pulse current?
The SMCG7.5CAHE3/9AT clamps to a maximum of 12.9 V at its rated peak pulse current (IPPM) of 116.3 A under a 10/1000 μs waveform. This value is measured per Vishay's test conditions in document 88457 and reflects worst-case voltage seen by protected circuitry during surge events. The SMCG7.5CAHE3/9AT maintains this clamping performance bidirectionally due to its symmetrical construction.
Is SMCG7.5CAHE3/9AT suitable for automotive applications?
Yes, SMCG7.5CAHE3/9AT is AEC-Q101 qualified per Vishay's documentation (Rev. 09-Jan-2024, Doc. 88457), confirming compliance with stress tests including temperature cycling, high-temperature reverse bias, and ESD. Its DO-215AB package, 150 °C TJ max, and low-leakage design make SMCG7.5CAHE3/9AT appropriate for under-hood and ADAS sensor protection in production vehicles.
Does SMCG7.5CAHE3/9AT have polarity markings on the package?
No, SMCG7.5CAHE3/9AT does not feature polarity markings such as a cathode band because it is a bidirectional TVS diode. The device functions identically in both directions, and its SMCG (DO-215AB) package has two symmetrical terminals labeled Anode and Cathode solely for schematic reference - physical orientation on PCB is non-critical. This simplifies layout and reduces assembly errors compared to unidirectional variants.
What is the maximum reverse leakage current for SMCG7.5CAHE3/9AT at its stand-off voltage?
The maximum reverse leakage current (ID) for SMCG7.5CAHE3/9AT is 100 μA at its 7.5 V stand-off voltage (VWM), measured at TA = 25 °C. This low leakage ensures minimal power loss in always-on systems and avoids false triggering in high-impedance sensor interfaces. The SMCG7.5CAHE3/9AT maintains this specification across its full operating temperature range per Vishay's published electrical characteristics table.
What tape-and-reel packaging does SMCG7.5CAHE3/9AT ship in?
SMCG7.5CAHE3/9AT ships in 13-inch diameter plastic tape and reel with a base quantity of 3500 units per reel (package code 9AT). This format supports high-volume automated SMT placement and aligns with industry-standard feeder compatibility. The "HE3" suffix confirms RoHS compliance and AEC-Q101 qualification, while the "9AT" denotes the reel size and quantity - distinct from the 7-inch / 850-unit 57T option.
SMCG7.5CAHE3/9AT 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):
- 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)
SMCG7.5CAHE3/9AT FAQ
1.How can I place an order for SMCG7.5CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG7.5CAHE3/9AT 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 SMCG7.5CAHE3/9AT reliable?
The price and inventory of SMCG7.5CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG7.5CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG7.5CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG7.5CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG7.5CAHE3/9AT?
SMCG7.5CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG7.5CAHE3/9AT 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 SMCG7.5CAHE3/9AT?
For technical support, including SMCG7.5CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG7.5CAHE3/9AT requirements.
6.How does Aetrix verify that SMCG7.5CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG7.5CAHE3/9AT 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 SMCG7.5CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG7.5CAHE3/9AT?
All SMCG7.5CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG7.5CAHE3/9AT, 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 SMCG7.5CAHE3/9AT part is unused and in its original packaging.
Return procedure for SMCG7.5CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG7.5CAHE3/9AT Tags
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