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Vishay General Semiconductor - Diodes Division SMCG7.5A-E3/57T
- Part No.:
- SMCG7.5A-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG7.5A-E3/57T.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,896
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Product details
Overview
SMCG7.5A-E3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMCG (DO-215AB) package, designed for clamping voltage transients on power and signal lines. 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 maximum clamping voltage (VC) at 116.3 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with a 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the SMCG7.5A-E3/57T datasheet, SMCG7.5A-E3/57T pinout, SMCG7.5A-E3/57T application, or SMCG7.5A-E3/57T equivalent, this device is evaluated for robust ESD and surge immunity in 12 V rail protection, CAN bus front-end safeguarding, and low-voltage microcontroller I/O line hardening - with attention to clamping ratio, thermal resistance (RθJA = 75 °C/W), and AEC-Q101 qualification status.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its specified breakdown range. Its glass-passivated junction ensures stable leakage performance (<100 µA at VWM), while low incremental surge resistance enables rapid energy diversion during transient events such as ISO 7637-2 load dump or IEC 61000-4-5 surges.
The SMCG7.5A-E3/57T is rated for -55 °C to +150 °C operating junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its DO-215AB package supports automated placement and provides 75 °C/W junction-to-ambient thermal resistance on standard 8.0 mm × 8.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - Maximum continuous reverse operating voltage before clamping begins; sets minimum system rail margin for 12 V nominal circuits. |
| VBR min/max | 8.33 V / 9.21 V at 1.0 mA - Confirmed breakdown window defines turn-on consistency across production lots and temperature. |
| VC @ IPPM | 12.9 V at 116.3 A - Clamping voltage under full 1500 W surge; determines worst-case overvoltage seen by protected downstream IC. |
| PPPM | 1500 W (10/1000 µs) - Peak transient power handling capacity; validates suitability for automotive load-dump suppression per ISO 7637-2 Pulse 5a. |
| ID @ VWM | ≤100 µA - Reverse leakage at stand-off voltage; critical for low-power sensor bias networks and battery-backed circuits. |
| TJ max | +150 °C - Maximum junction temperature rating; enables use in under-hood automotive environments without derating penalties. |
| AEC-Q101 | Qualified - Certified for automotive-grade reliability including high-temperature operating life, temperature cycling, and HTRB testing. |
Pinout & Package
Package: SMCG (DO-215AB) - surface-mount, gull-wing leaded case with cathode band marking; 0.310" × 0.400" footprint (7.87 mm × 10.16 mm); matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward conduction mode; tied to ground or low-side reference in unidirectional TVS configuration. | Connected to system ground plane to provide low-impedance return path during clamping; requires low-inductance layout for effective surge shunting. |
| Cathode | Current exit terminal in forward conduction; marked with band on package; connected to protected line (e.g., 12 V supply or CAN_H). | Acts as the "input" side of the clamp - must be routed with minimal trace length and loop area to avoid inductive overshoot during fast transients. |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile DO-215AB package | Enables PCB space savings in dense automotive ECUs and industrial PLC modules while maintaining 1500 W surge capability. |
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage drift over time and temperature - critical for long-life field deployments. |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control, body electronics, and ADAS sensor interfaces. |
| MSL Level 1 rating | Supports standard SMT reflow without moisture sensitivity concerns - eliminates bake requirements and streamlines manufacturing. |
| 1500 W peak pulse power | Meets ISO 7637-2 Pulse 5a (load dump) requirements for 12 V systems with up to 100 V clamped voltage margin. |
Applications
| Automotive Power Rail Protection | CAN Bus Physical Layer Safeguarding |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs against load dump transients in body control modules. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between VCC and GND, activated within <1 ns to limit voltage excursion to ≤12.9 V. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic supplies during ISO 7637-2 Pulse 5a events up to 100 V/1500 W. |
Use Scenario: Shielding CAN_H and CAN_L lines from ESD and coupled transients in vehicle infotainment gateways. IC Role / Device Role / Timing Role: Paired unidirectional SMCG7.5A-E3/57T devices (one per line) referenced to common ground, clamping differential and common-mode surges. Use Value: Maintains CAN signal integrity by limiting line voltage to <13 V during ±25 kV contact ESD (IEC 61000-4-2) without disrupting bit timing. |
| Industrial Sensor Interface Protection | Consumer Appliance Motor Drive Inputs |
|
Use Scenario: Hardening analog sensor outputs (e.g., pressure, temperature) connected to ADC inputs in factory automation controllers. IC Role / Device Role / Timing Role: Low-leakage (≤100 µA) TVS placed at connector entry point to suppress induced lightning surges on 24 V sensor loops. Use Value: Preserves measurement accuracy by preventing input-stage saturation or ESD-induced offset drift in precision op-amp front-ends. |
Use Scenario: Guarding triac/driver IC inputs against commutation spikes from universal motor switching in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Fast-response (sub-nanosecond) clamp absorbing inductive kickback energy before it reaches logic-level gate drivers. Use Value: Eliminates false triggering and extends lifetime of zero-crossing detection circuitry subjected to repetitive 100–500 V spikes. |
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-E3/57T | Same VWM (7.5 V) and PPPM (400 W), but lower peak power rating and SMA (DO-214AC) package with higher RθJA (110 °C/W). | Limited to lower-energy transients (e.g., IEC 61000-4-2 ESD only); unsuitable for ISO 7637-2 load dump. | Select when cost or board space is constrained and surge threat level is limited to human-body-model ESD. |
| SMCJ7.5A-E3/57T | Same VWM and DO-214AB package, but higher PPPM (1500 W) and VC = 12.0 V - tighter clamping with identical footprint. | Offers improved clamping ratio (VC/VWM = 1.60 vs. 1.72) and better thermal performance (RθJA = 60 °C/W). | Prefer for new designs requiring marginally lower clamped voltage or enhanced thermal headroom in high-ambient environments. |
Compared with SMAJ7.5A-E3/57T and SMCJ7.5A-E3/57T, the SMCG7.5A-E3/57T delivers identical 1500 W surge rating in a lower-profile DO-215AB package with AEC-Q101 qualification - making it optimal for space-constrained automotive modules where both mechanical fit and qualification compliance are mandatory.
Availability
SMCG7.5A-E3/57T is available at Aetrix Electronics and suitable for automotive power rail protection, CAN bus safeguarding, and industrial sensor interface hardening requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for SMCG7.5A-E3/57T 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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The SMCG series targets high-energy transient suppression in automotive and industrial environments, delivering AEC-Q101-qualified, surface-mount TVS solutions optimized for space-constrained layouts and demanding surge waveforms like ISO 7637-2.
FAQ
What is the clamping voltage of SMCG7.5A-E3/57T under maximum surge conditions?
The SMCG7.5A-E3/57T has a maximum clamping voltage (VC) of 12.9 V at 116.3 A peak pulse current (IPPM), measured using a 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during a full 1500 W transient event - critical for ensuring downstream ICs remain within absolute maximum ratings. The SMCG7.5A-E3/57T achieves this clamping performance while maintaining low leakage and fast response.
Is SMCG7.5A-E3/57T qualified for automotive applications?
Yes, SMCG7.5A-E3/57T is AEC-Q101 qualified, having passed stress tests including high-temperature operating life, temperature cycling, and highly accelerated stress testing. This qualification confirms its suitability for under-hood and cabin-mounted automotive electronics such as body control modules and sensor interfaces. The SMCG7.5A-E3/57T also meets MSL Level 1 and RoHS compliance requirements per its E3 suffix.
How does the SMCG7.5A-E3/57T differ from SMAJ7.5A-E3/57T in practical design use?
The SMCG7.5A-E3/57T offers 1500 W peak pulse power in a DO-215AB package with 75 °C/W thermal resistance, whereas SMAJ7.5A-E3/57T provides only 400 W in a larger DO-214AC package with 110 °C/W RθJA. In practice, the SMCG7.5A-E3/57T supports ISO 7637-2 load dump protection, while SMAJ7.5A-E3/57T is restricted to ESD-only scenarios. Layout, thermal management, and surge threat coverage differ significantly between the two.
What is the polarity configuration and marking convention for SMCG7.5A-E3/57T?
The SMCG7.5A-E3/57T is a unidirectional TVS diode with cathode indicated by a visible band on the package body. The anode connects to ground, and the cathode connects to the line being protected (e.g., 12 V rail). This polarity must be observed strictly - reverse orientation prevents clamping action and may cause catastrophic failure during overvoltage events. The SMCG7.5A-E3/57T does not function as a bidirectional device.
Can SMCG7.5A-E3/57T be used in parallel to increase surge current handling?
No - SMCG7.5A-E3/57T should not be paralleled without external balancing components. Minor VBR tolerances (8.33–9.21 V) cause uneven current sharing during transients, risking thermal runaway in the lower-VBR unit. For higher IPPM requirements, select a single higher-rated device (e.g., SMCG12A or SMCG15A) or consult Vishay's application note AN942 for validated multi-device configurations with matched units and current-sharing resistors.
SMCG7.5A-E3/57T 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCG)
SMCG7.5A-E3/57T FAQ
1.How can I place an order for SMCG7.5A-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG7.5A-E3/57T 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 SMCG7.5A-E3/57T reliable?
The price and inventory of SMCG7.5A-E3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG7.5A-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCG7.5A-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG7.5A-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG7.5A-E3/57T?
SMCG7.5A-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG7.5A-E3/57T 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 SMCG7.5A-E3/57T?
For technical support, including SMCG7.5A-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG7.5A-E3/57T requirements.
6.How does Aetrix verify that SMCG7.5A-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG7.5A-E3/57T 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 SMCG7.5A-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCG7.5A-E3/57T?
All SMCG7.5A-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG7.5A-E3/57T, 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 SMCG7.5A-E3/57T part is unused and in its original packaging.
Return procedure for SMCG7.5A-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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