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Vishay General Semiconductor - Diodes Division SMCG7.5AHE3/57T
- Part No.:
- SMCG7.5AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG7.5AHE3/57T.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,132
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Product details
Overview
SMCG7.5AHE3/57T 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 7.5 V stand-off voltage (VWM), 8.33–9.21 V breakdown voltage (VBR) at 1.0 mA test current, 12.9 V clamping voltage (VC) at 100 A peak pulse current, 1500 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMCG7.5AHE3/57T datasheet, SMCG7.5AHE3/57T pinout, SMCG7.5AHE3/57T application, or SMCG7.5AHE3/57T equivalent, key selection criteria include clamping performance under 100 A surge, unidirectional polarity with cathode band marking, RoHS-compliant AEC-Q101 qualification, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This TVS diode operates as a clamping-type protector, leveraging an avalanche breakdown mechanism to limit transient voltages across protected lines. Its low incremental surge resistance and fast response time ensure effective suppression of ESD, lightning-induced surges, and inductive switching spikes in DC power rails and signal paths.
The device is rated for -55 °C to +150 °C junction temperature, with thermal resistance of 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-lead), enabling reliable operation under high-power transients when mounted per recommended pad layout. It meets UL 497B recognition and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC bias margin for protected circuit. |
| VBR min/max | 8.33 V / 9.21 V at 1.0 mA - Tight breakdown tolerance ensures predictable turn-on threshold for consistent protection timing. |
| VC @ IPPM | 12.9 V at 100 A - Clamping voltage during full-rated 10/1000 µs surge; determines maximum stress imposed on downstream ICs. |
| PPPM | 1500 W - Peak pulse power handling capability; supports high-energy transients without failure when applied per JEDEC standards. |
| ID @ VWM | 100 µA - Low reverse leakage at stand-off voltage minimizes quiescent power loss and avoids false triggering. |
| TJ max | +150 °C - Maximum junction temperature rating enables use in under-hood automotive environments and industrial enclosures. |
| AEC-Q101 | Qualified - Validated for automotive electronic systems per stress-test requirements including HTOL, TCT, and ESD. |
Pinout & Package
Package: SMCG (DO-215AB) - surface-mount, low-profile gull-wing leaded package with matte tin-plated terminals; meets UL 94 V-0 flammability rating and J-STD-002 solderability standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to protected line's lower-potential side | For unidirectional operation, connects to ground or return path; polarity must align with cathode band orientation. |
| Cathode | Current exit terminal in forward bias; marked with band on package body | Connects to the line being protected (e.g., 12 V rail); clamping occurs when cathode-to-anode voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable, repeatable avalanche characteristics and long-term reliability under repeated surge stress. |
| MSL Level 1 (260 °C) | Enables standard reflow soldering without moisture sensitivity concerns or pre-bake requirements. |
| Low clamping ratio (VC/VBR ≈ 1.44) | Minimizes overvoltage overshoot during surge events, reducing risk of damage to downstream MOSFETs or ICs. |
| Automated placement compatible | Gull-wing leads and standardized DO-215AB footprint support high-yield pick-and-place assembly in volume production. |
| AEC-Q101 qualified & RoHS compliant | Meets automotive supply chain requirements for qualification, traceability, and environmental compliance (HE3 suffix). |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and alternator transients in passenger vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp positive-going surges above 12 V. Use Value: Withstands 1500 W pulses and clamps to ≤12.9 V, preventing latch-up or gate oxide damage in microcontrollers and CAN transceivers. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation PLC modules. IC Role / Device Role / Timing Role: Connected across differential or single-ended signal lines to shunt ESD and cable discharge events. Use Value: 100 µA leakage at 7.5 V avoids signal offset errors; fast response preserves integrity of sub-µs sensor pulses. |
| Consumer USB Power Input Protection | Telecom DC Feeder Line Protection |
Use Scenario: Shielding USB-C PD input stages in portable chargers and docking stations from hot-swap and adapter transients. IC Role / Device Role / Timing Role: Placed upstream of buck converter input to absorb 10/1000 µs surges induced by connector mating. Use Value: 12.9 V clamping ensures input capacitors and controller ICs remain within absolute maximum ratings during 100 A surge events. | Use Scenario: Protecting PoE-powered equipment (e.g., IP cameras, wireless APs) from lightning-induced surges on 48 V DC feeder lines. IC Role / Device Role / Timing Role: Mounted across DC input terminals to divert common-mode transients to chassis ground. Use Value: AEC-Q101 qualification and 1500 W rating provide field-proven robustness in outdoor telecom infrastructure deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.5A-E3/52T | Same VWM (7.5 V) and VC (12.9 V), but lower PPPM (400 W) and smaller SMA (DO-214AC) package. | Lower surge capacity limits use to consumer-grade or low-energy industrial signals; not AEC-Q101 qualified. | Select only where space constraints prohibit SMCG footprint and surge energy remains below 400 W. |
| SMCJ7.5AHE3/57T | Identical electrical specs (VWM, VBR, VC, PPPM) and AEC-Q101 qualification, but larger SMC (DO-214AB) package with higher thermal mass. | Better thermal dissipation for repetitive surge duty cycles; requires larger PCB area and different land pattern. | Choose when enhanced thermal endurance is required and board space allows SMC footprint. |
Compared with SMAJ7.5A-E3/52T, SMCG7.5AHE3/57T delivers 275 % higher surge power handling and automotive qualification; versus SMCJ7.5AHE3/57T, it offers identical protection performance in a 30 % smaller footprint, optimizing board space without sacrificing reliability.
Availability
SMCG7.5AHE3/57T is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, USB-C power delivery systems, and telecom DC feeder protection requiring stable component supply and AEC-Q101 assurance.
Supply support for SMCG7.5AHE3/57T 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 is part of Vishay's TRANSZORB® TVS platform, engineered for high-energy transient suppression in automotive, industrial, and communications systems where compact size and AEC-Q101 compliance are critical.
FAQ
What is the clamping voltage of SMCG7.5AHE3/57T at its rated peak pulse current?
The SMCG7.5AHE3/57T has a maximum clamping voltage (VC) of 12.9 V when subjected to its rated 100 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured with the device mounted on 8.0 mm × 8.0 mm copper pads per the Vishay recommended layout, ensuring realistic thermal and electrical conditions for design validation.
Is SMCG7.5AHE3/57T suitable for automotive applications?
Yes, SMCG7.5AHE3/57T is AEC-Q101 qualified and carries the HE3 suffix indicating RoHS compliance and automotive-grade qualification. It is specifically intended for use in automotive subsystems such as body control modules, infotainment power supplies, and sensor interfaces where robust transient immunity and long-term reliability under temperature cycling are mandatory.
What does the "HE3" suffix mean in SMCG7.5AHE3/57T?
The "HE3" suffix in SMCG7.5AHE3/57T denotes that the device is RoHS compliant and AEC-Q101 qualified (H = AEC-Q101, E3 = RoHS-compliant industrial grade). It also indicates compliance with JESD201 Class 2 whisker resistance testing and suitability for lead-free reflow soldering up to 260 °C peak temperature.
How does SMCG7.5AHE3/57T differ from bidirectional variants like SMCG7.5CA?
SMCG7.5AHE3/57T is unidirectional, with polarity indicated by a cathode band and optimized for DC line protection where only positive-going transients occur. In contrast, SMCG7.5CA is bidirectional, offering symmetrical clamping for AC-coupled or floating signal lines, but with no polarity marking and slightly different VBR limits (e.g., max 7.25 V for SMCG5.0CA per datasheet note).
What is the thermal resistance of SMCG7.5AHE3/57T, and how does it affect layout design?
SMCG7.5AHE3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-lead (RθJL) of 15 °C/W. These values assume mounting on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. To maintain safe junction temperatures during repeated surges, PCB layout must replicate this pad area and avoid excessive trace length or isolation that degrades heat transfer.
SMCG7.5AHE3/57T 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):
- 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)
SMCG7.5AHE3/57T FAQ
1.How can I place an order for SMCG7.5AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG7.5AHE3/57T 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 SMCG7.5AHE3/57T reliable?
The price and inventory of SMCG7.5AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG7.5AHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCG7.5AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG7.5AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG7.5AHE3/57T?
SMCG7.5AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG7.5AHE3/57T 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 SMCG7.5AHE3/57T?
For technical support, including SMCG7.5AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG7.5AHE3/57T requirements.
6.How does Aetrix verify that SMCG7.5AHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG7.5AHE3/57T 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 SMCG7.5AHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCG7.5AHE3/57T?
All SMCG7.5AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG7.5AHE3/57T, 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 SMCG7.5AHE3/57T part is unused and in its original packaging.
Return procedure for SMCG7.5AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG7.5AHE3/57T Tags
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