My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMCG7.5A-E3/9AT
- Part No.:
- SMCG7.5A-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG7.5A-E3/9AT.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,543
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCG7.5A-E3/9AT from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMCG (DO-215AB) package, with a standoff voltage of 7.5 V, breakdown voltage range of 8.33–9.21 V at 1.0 mA test current, clamping voltage of 12.9 V at 116.3 A peak pulse current, and 1500 W peak pulse power rating. It protects sensitive ICs and MOSFETs against inductive switching transients in automotive and industrial power rails.
For engineers reviewing the SMCG7.5A-E3/9AT datasheet, SMCG7.5A-E3/9AT pinout, SMCG7.5A-E3/9AT application, or SMCG7.5A-E3/9AT equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), polarity marking (cathode band), and reel packaging details (13" tape, 3500 pcs/reel) for rapid design-in and procurement assessment.
Technical Context
This TVS diode operates as a unidirectional clamping device with glass-passivated junction and low incremental surge resistance, enabling fast response to transient overvoltages (10/1000 µs waveform). Its 7.5 V stand-off voltage ensures compatibility with 5 V and 6 V logic-supply rails while maintaining margin against normal operating variations.
Designed for surface-mount assembly on 8.0 mm × 8.0 mm copper pads per terminal, it meets J-STD-020 MSL Level 1 (260 °C peak reflow) and is qualified to AEC-Q101 for automotive under-hood applications. The matte tin-plated leads support reliable solderability per JESD 22-B102 and J-STD-002.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - Maximum reverse working voltage before clamping begins; sets minimum system overvoltage immunity threshold |
| VBR (min/max) | 8.33 V / 9.21 V at IT = 1.0 mA - Confirmed breakdown range ensures predictable turn-on across temperature and unit variation |
| VC @ IPPM | 12.9 V at 116.3 A - Clamping voltage during 1500 W transient; defines maximum stress imposed on protected downstream circuitry |
| PPPM | 1500 W - Peak pulse power handling capability with 10/1000 µs waveform; determines survivability against ISO 7637-2 Pulse 1/2a/5a events |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance on standard 8 mm × 8 mm pad layout; enables thermal derating calculations up to +125 °C ambient |
| IFSM | 200 A - Non-repetitive forward surge current rating (8.3 ms half-sine); supports protection against load-dump transients in 12 V automotive systems |
Pinout & Package
Package: SMCG (DO-215AB) - low-profile, gull-wing surface-mount package with cathode band marking on unidirectional variants; meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during clamping (reverse bias) | Connected to protected line; conducts surge current toward ground when VLINE exceeds VBR |
| Cathode | Current exit point during clamping (reverse bias) | Marked with band; tied to system ground or low-impedance return path to complete clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood use including temperature cycling, humidity, and mechanical shock per AEC specification |
| Glass passivated chip junction | Enhances long-term reliability and moisture resistance versus epoxy-passivated alternatives in harsh environments |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ESD, inductive kickback) |
| MSL Level 1 compliance | Enables single-pass reflow without baking; compatible with standard SMT lines using peak temperature ≤260 °C |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and alternator ripple transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between power rail and ground, absorbing energy before it reaches LDOs or microcontrollers. Use Value: Withstands 200 A surge (8.3 ms) and clamps to 12.9 V, preventing damage to 5 V/3.3 V logic supplies downstream. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events in factory automation. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted at connector interface to shunt transients before signal conditioning amplifiers. Use Value: 12.9 V clamping voltage preserves signal integrity for 0–5 V ratiometric sensors while meeting IEC 61000-4-2 ±8 kV contact discharge. |
| Consumer USB Power Port Protection | Telecom DC Power Input Protection |
Use Scenario: Safeguarding USB-C PD controller ICs and Type-C port power switches from hot-plug and reverse-polarity transients. IC Role / Device Role / Timing Role: Unidirectional TVS on VBUS line, positioned upstream of buck converter and load switch. Use Value: 7.5 V VWM allows operation across USB 2.0/3.x (5 V) and USB PD 3.0 (up to 20 V) with headroom; 1500 W rating handles worst-case insertion spikes. | Use Scenario: Securing -48 V telecom rectifier outputs against lightning-induced surges entering central office equipment. IC Role / Device Role / Timing Role: Paired unidirectional TVS devices (anode-to-rail, cathode-to-ground) on primary DC input bus. Use Value: 1500 W PPPM and 116.3 A IPPM meet GR-1089-CORE Level 3 surge requirements for outdoor plant applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.5A-E3/57T | Same VWM (7.5 V), lower PPPM (400 W), SMA (DO-214AC) package, RθJA = 110 °C/W | Lower power handling limits use to sub-100 W surge environments; less suitable for automotive load dump | Select when board space is constrained and surge threat level is limited to IEC 61000-4-5 Level 3 (0.5 kV) |
| SMCJ7.5A-E3/9AT | Same VWM (7.5 V), higher PPPM (1500 W), but larger SMC (DO-214AB) package and higher RθJA (50 °C/W) | Requires more PCB area; better thermal performance on minimal copper but less compact than SMCG | Prefer when higher thermal margin is needed and footprint constraints allow 7.11 mm × 6.22 mm vs. SMCG's 7.87 mm × 3.17 mm |
Compared with SMAJ7.5A-E3/57T and SMCJ7.5A-E3/9AT, SMCG7.5A-E3/9AT delivers identical 7.5 V standoff and 1500 W surge rating in the smallest DO-215AB footprint, enabling high-density automotive PCB layouts without sacrificing AEC-Q101 qualification or thermal robustness on standard pad layouts.
Availability
SMCG7.5A-E3/9AT is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and consumer USB-C PD port safeguarding requiring stable component supply and full traceability.
Supply support for SMCG7.5A-E3/9AT 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, TVS devices, and optoelectronics with emphasis on reliability, AEC-Q qualification, and industrial-grade robustness.
The SMCG series is part of Vishay's Transient Voltage Suppressor portfolio, engineered specifically for high-power, low-profile surface-mount surge protection in space-constrained automotive and industrial control modules.
FAQ
What is the clamping voltage of SMCG7.5A-E3/9AT and how is it measured?
The clamping voltage of SMCG7.5A-E3/9AT is 12.9 V, measured at its peak pulse current (IPPM) of 116.3 A under a 10/1000 µs waveform. This value reflects the maximum voltage seen across the device terminals during standardized surge testing and directly determines the protection level provided to downstream components. SMCG7.5A-E3/9AT maintains this clamping performance across its specified operating temperature range.
Is SMCG7.5A-E3/9AT qualified for automotive applications?
Yes, SMCG7.5A-E3/9AT is AEC-Q101 qualified, confirming its suitability for automotive electronic systems including engine control units, body electronics, and ADAS modules. The qualification covers temperature cycling, humidity resistance, mechanical shock, and lifetime reliability testing. SMCG7.5A-E3/9AT carries the HE3 suffix variant for full AEC-Q101 compliance; the E3 suffix denotes RoHS-compliant industrial grade, and both share identical electrical specs.
What does the "-E3/9AT" suffix mean in SMCG7.5A-E3/9AT?
The "-E3" suffix indicates RoHS-compliant, matte tin-plated leads and industrial-grade qualification per JESD 201 Class 2 whisker resistance. The "/9AT" denotes packaging in 13-inch diameter plastic tape and reel, with 3500 units per reel - optimized for high-volume SMT placement. This differs from /57T (7-inch reel, 850 units), and confirms full traceability and process control for production use.
How does SMCG7.5A-E3/9AT compare to bidirectional TVS diodes like SMCG7.5CA?
SMCG7.5A-E3/9AT is unidirectional and features a cathode band for polarity identification, while SMCG7.5CA is bidirectional with no polarity marking and symmetric breakdown in both directions. The unidirectional version offers lower leakage and tighter VBR tolerance (±5% typical) but requires correct orientation in-circuit. SMCG7.5A-E3/9AT is preferred for DC power rail protection where polarity is fixed and low reverse leakage is critical.
What is the thermal resistance of SMCG7.5A-E3/9AT and how does it affect layout?
SMCG7.5A-E3/9AT 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. This value assumes minimum recommended pad layout per Vishay's datasheet; reducing pad size increases RθJA, potentially limiting surge duty cycle or ambient operating temperature. For continuous operation near TJmax = 150 °C, designers must ensure adequate copper area and airflow per thermal simulation.
SMCG7.5A-E3/9AT 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:
- 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-E3/9AT FAQ
1.How can I place an order for SMCG7.5A-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG7.5A-E3/9AT 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 SMCG7.5A-E3/9AT reliable?
The price and inventory of SMCG7.5A-E3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG7.5A-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG7.5A-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG7.5A-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG7.5A-E3/9AT?
SMCG7.5A-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG7.5A-E3/9AT 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 SMCG7.5A-E3/9AT?
For technical support, including SMCG7.5A-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG7.5A-E3/9AT requirements.
6.How does Aetrix verify that SMCG7.5A-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG7.5A-E3/9AT 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 SMCG7.5A-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG7.5A-E3/9AT?
All SMCG7.5A-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG7.5A-E3/9AT, 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 SMCG7.5A-E3/9AT part is unused and in its original packaging.
Return procedure for SMCG7.5A-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG7.5A-E3/9AT Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
