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Vishay General Semiconductor - Diodes Division SMCG75AHE3/57T
- Part No.:
- SMCG75AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG75AHE3/57T.pdf
- Description:
- TVS DIODE 75VWM 121VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,313
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Product details
Overview
SMCG75AHE3/57T 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 75 V stand-off voltage (VWM), 83.3–92.1 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (PPPM), 12.4 A peak pulse current (IPPM), and clamps to ≤121 V at rated surge. It is AEC-Q101 qualified and used in automotive power line and sensor interface protection.
For engineers reviewing the SMCG75AHE3/57T datasheet, SMCG75AHE3/57T pinout, SMCG75AHE3/57T application, or SMCG75AHE3/57T equivalent, key selection criteria include unidirectional polarity, DO-215AB thermal performance (RθJA = 75 °C/W), 1500 W 10/1000 µs surge rating, 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 device in parallel with protected circuitry, responding within picoseconds to transients exceeding its VWM. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 µA at 75 V), while the low incremental surge resistance enables effective energy diversion during 10/1000 µs surges.
The SMCG75AHE3/57T is rated for continuous operation from –55 °C to +150 °C junction temperature and dissipates up to 6.5 W at TA = 50 °C on an infinite heatsink. Its DO-215AB package supports high-current surge handling (200 A IFSM for unidirectional types) and meets J-STD-020 MSL Level 1 with 260 °C reflow peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 75 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 83.3 V / 92.1 V at IT = 1 mA - Ensures reliable turn-on above normal operating voltage with tight tolerance |
| VC @ IPPM | ≤121 V at 12.4 A - Clamping voltage limits stress on downstream ICs during 10/1000 µs surge events |
| PPPM | 1500 W - Peak surge power handling capability per standard 10/1000 µs waveform |
| ID @ VWM | ≤1.0 µA - Ultra-low reverse leakage preserves signal integrity and minimizes standby power loss |
| TJ max | +150 °C - Enables use in under-hood automotive environments and industrial power supplies |
| RθJA | 75 °C/W - Thermal resistance defines required PCB copper area (8.0 mm × 8.0 mm pads per terminal) for safe power dissipation |
Pinout & Package
Package: SMCG (DO-215AB), surface-mount gull-wing leaded package with matte tin-plated terminals, RoHS-compliant and AEC-Q101 qualified. Cathode indicated by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to ground or low-side reference | Completes conduction path during transient clamping; must be routed with low-inductance ground plane |
| Cathode | Current exit point in forward bias; marked with band; connected to protected line | Receives surge energy from protected node; requires direct connection to I/O or power rail without series impedance |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated reliability for automotive powertrain and body electronics applications requiring zero-failure field performance |
| Glass passivated junction | Stable VBR over lifetime and temperature; eliminates parameter drift due to moisture or contamination |
| MSL Level 1 rating | Supports single-reflow assembly without baking; compatible with standard 260 °C peak reflow profiles |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a/5a) |
| UL 94 V-0 molding compound | Meets flammability safety requirements for enclosed automotive and industrial enclosures |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump (ISO 16750-2) and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges >75 V. Use Value: Limits clamped voltage to ≤121 V, preventing damage to 3.3 V/5 V microcontrollers and CAN transceivers downstream. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation systems exposed to relay switching noise. IC Role / Device Role / Timing Role: Parallel-connected TVS on signal lines referenced to local ground, absorbing inductive kickback. Use Value: Sub-100 ns response time and <1.0 µA leakage preserve signal accuracy and prevent false triggering in precision ADC front-ends. |
| Telecom DC Power Input Protection | Consumer Device USB/DC Jack Protection |
Use Scenario: Securing 48 V PoE-powered network switches against lightning-induced surges on DC input rails. IC Role / Device Role / Timing Role: Primary clamping device on main DC bus, coordinated with upstream fuses and secondary filtering. Use Value: 1500 W PPPM rating handles multi-kA induced surges while maintaining VWM margin above nominal 48 V supply. | Use Scenario: Guarding USB-C or barrel-jack inputs in smart home hubs against ESD and accidental AC adapter misconnection. IC Role / Device Role / Timing Role: First-line defense at connector, shunting transients before they reach USB PD controllers or LDOs. Use Value: DO-215AB footprint enables compact layout; AEC-Q101 qualification ensures long-term stability even in thermally cycled consumer enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ75A-E3/57T | Same VWM (75 V) and PPPM (400 W), but lower surge rating (400 W vs. 1500 W); SMA (DO-214AC) package | Limited to lower-energy transients (e.g., IEC 61000-4-2 ESD only); not suitable for load dump or lightning | Select SMAJ75A-E3/57T only when space constraints prohibit DO-215AB and surge energy is <400 W |
| SMCJ75A-E3/57T | Same VWM (75 V) and PPPM (1500 W), identical DO-214AB package (not DO-215AB); slightly higher RθJA (85 °C/W) | Compatible thermal design but requires verification of pad layout compatibility (DO-214AB vs. DO-215AB land pattern) | Choose SMCJ75A-E3/57T if existing DO-214AB footprint is fixed and AEC-Q101 is not mandatory |
Compared with SMAJ75A-E3/57T and SMCJ75A-E3/57T, the SMCG75AHE3/57T delivers identical 1500 W surge capability with AEC-Q101 qualification and optimized thermal resistance (75 °C/W), making it the preferred choice for automotive and high-reliability industrial designs where qualification and thermal margin are critical.
Availability
SMCG75AHE3/57T is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and telecom DC input surge suppression requiring stable component supply across extended production lifecycles.
Supply support for SMCG75AHE3/57T 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 automotive-grade qualification.
The SMCG series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in harsh environments including automotive power distribution, industrial control, and infrastructure equipment.
FAQ
What is the clamping voltage of SMCG75AHE3/57T at its rated peak pulse current?
The SMCG75AHE3/57T has a maximum clamping voltage (VC) of 121 V when subjected to its rated peak pulse current (IPPM) of 12.4 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream components see limited overvoltage stress during surge events. The clamping performance is guaranteed across the full operating temperature range.
Is SMCG75AHE3/57T suitable for automotive applications?
Yes, SMCG75AHE3/57T is AEC-Q101 qualified and explicitly designed for automotive use. Its construction-glass-passivated junction, DO-215AB package with matte tin leads, MSL Level 1 rating, and operation up to +150 °C-meets stringent automotive reliability requirements. It is commonly deployed in engine control units, body control modules, and ADAS sensor interfaces for load dump and ISO 7637-2 transient protection.
What does the "HE3" suffix indicate in SMCG75AHE3/57T?
The "HE3" suffix in SMCG75AHE3/57T denotes RoHS-compliant construction with AEC-Q101 qualification. Per Vishay's ordering nomenclature, "HE3" identifies the industrial-grade, AEC-Q101-qualified variant with matte tin-plated leads, distinguishing it from "E3" (RoHS, non-AEC-Q101) and "HM3" (halogen-free + AEC-Q101) variants. The "57T" indicates 7-inch tape-and-reel packaging with 850 units per reel.
How does the thermal performance of SMCG75AHE3/57T compare to similar TVS diodes?
SMCG75AHE3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads-superior to SMAJ (≈150 °C/W) and competitive with SMCJ (≈85 °C/W). This lower RθJA allows higher sustained power dissipation and improved reliability in thermally constrained layouts, especially important in automotive under-hood applications where ambient temperatures exceed 105 °C.
Can SMCG75AHE3/57T be used in bidirectional configurations?
No, SMCG75AHE3/57T is a unidirectional TVS diode, as confirmed by its "A" suffix and cathode band marking. Bidirectional variants in the same family use the "CA" suffix (e.g., SMCG75CA). Using SMCG75AHE3/57T in bidirectional circuits would result in forward conduction during negative transients, potentially damaging the device or failing to protect the circuit. Always match polarity to application requirements.
SMCG75AHE3/57T 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):
- 75V
- Voltage - Breakdown (Min):
- 83.3V
- Voltage - Clamping (Max) @ Ipp:
- 121V
- Current - Peak Pulse (10/1000µs):
- 12.4A
- 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)
SMCG75AHE3/57T FAQ
1.How can I place an order for SMCG75AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG75AHE3/57T 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 SMCG75AHE3/57T reliable?
The price and inventory of SMCG75AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG75AHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCG75AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG75AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG75AHE3/57T?
SMCG75AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG75AHE3/57T 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 SMCG75AHE3/57T?
For technical support, including SMCG75AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG75AHE3/57T requirements.
6.How does Aetrix verify that SMCG75AHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG75AHE3/57T 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 SMCG75AHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCG75AHE3/57T?
All SMCG75AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG75AHE3/57T, 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 SMCG75AHE3/57T part is unused and in its original packaging.
Return procedure for SMCG75AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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