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Vishay General Semiconductor - Diodes Division SMCG75HE3/57T
- Part No.:
- SMCG75HE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG75HE3/57T.pdf
- Description:
- TVS DIODE 75VWM 134VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,834
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Product details
Overview
SMCG75HE3/57T from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) in DO-215AB (SMCG) package, designed for clamping voltage transients on signal/power lines. It features 75 V stand-off voltage (VWM), 121 V maximum clamping voltage (VC) at 12.4 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMCG75HE3/57T datasheet, SMCG75HE3/57T pinout, SMCG75HE3/57T application, or SMCG75HE3/57T equivalent, key selection criteria include bi-directional surge capability, AEC-Q101 qualification, low clamping ratio (VC/VWM ≈ 1.61), RoHS-compliant matte tin terminations, and MSL Level 1 reflow compatibility up to 260 °C.
Technical Context
This device operates as a bi-directional avalanche diode, leveraging glass-passivated junction technology to deliver symmetrical clamping in both polarities without polarity marking. Its thermal resistance (RθJA = 75 °C/W) and junction-to-lead resistance (RθJL = 15 °C/W) support reliable operation under repetitive surge conditions when mounted on 8.0 mm × 8.0 mm copper pads.
The SMCG75HE3/57T complies with ANSI/IEEE C62.35 for transient suppressors and meets UL 497B recognition (QVGQ2). It is rated for -55 °C to +150 °C operating junction temperature, with 1.0 µA max reverse leakage at VWM and 121 V clamping at 12.4 A IPPM - validated per 10/1000 µs waveform per Fig. 3 of document 88457.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 75 V - maximum continuous reverse working voltage before clamping initiates |
| VC (Clamping Voltage) | 121 V at IPPM = 12.4 A - limits transient voltage seen by downstream circuitry |
| PPPM (Peak Pulse Power) | 1500 W - energy-handling capacity for 10/1000 µs surges |
| ID (Reverse Leakage) | ≤1.0 µA at 75 V - ensures minimal standby power loss and signal integrity |
| TJ max. | +150 °C - enables use in under-hood automotive and high-ambient industrial environments |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability per stress test requirements |
| Package | DO-215AB (SMCG) - surface-mount gull-wing leadframe compatible with automated placement |
Pinout & Package
DO-215AB (SMCG) package: gull-wing surface-mount outline with two terminals; no polarity marking for bi-directional operation; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional avalanche junction | No functional distinction - either terminal serves as input/output for transient suppression in AC or bidirectional DC paths |
| Case / Heat Sink Interface | Thermal conduction path | Leads and internal chip mount transfer heat to PCB copper pads (8.0 mm × 8.0 mm recommended per terminal) |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| AEC-Q101 qualification | Validates robustness for automotive applications including engine control modules and ADAS sensor interfaces |
| MSL Level 1 rating | Supports standard SMT reflow profiles up to 260 °C peak without moisture-induced damage |
| Glass-passivated junction | Ensures stable breakdown characteristics and long-term reliability under repeated surge stress |
| Low incremental surge resistance | Contributes to tight clamping performance (VC/VWM = 1.61) and minimal let-through energy |
Applications
| Automotive Sensor Protection | Industrial I/O Port Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Bi-directional TVS placed at connector interface to clamp transients before they reach signal conditioning ICs or microcontrollers. Use Value: Prevents latch-up or permanent damage to sensitive analog front-ends while maintaining signal fidelity due to low leakage (<1 µA) and fast response. |
Use Scenario: Safeguarding PLC digital input modules and RS-485 communication ports against field-induced surges in factory automation systems. IC Role / Device Role / Timing Role: Primary overvoltage clamp on unshielded wiring exposed to motor switching noise and lightning-induced coupling. Use Value: Withstands 1500 W peak pulses and maintains <121 V clamping, ensuring downstream isolators and interface ICs remain within safe operating area. |
| Consumer Audio Line Protection | Telecom DSL/ADSL Line Interface |
Use Scenario: Shielding line-level audio inputs/outputs in AV receivers and soundbars from electrostatic discharge during cable hot-plug events. IC Role / Device Role / Timing Role: Low-capacitance bi-directional suppressor placed directly at jack connectors to shunt ESD before reaching op-amps or codec ICs. Use Value: Delivers sub-1 µA leakage and rapid avalanche response, preserving audio signal integrity without adding noise or distortion. |
Use Scenario: Front-end transient protection for DSLAM line cards and customer premises equipment handling asymmetric digital subscriber line signals. IC Role / Device Role / Timing Role: Bidirectional surge limiter on twisted-pair telephone lines subjected to induced surges from nearby power lines or lightning. Use Value: 75 V VWM aligns with typical DSL common-mode voltage ranges, while 121 V VC prevents overvoltage stress on line driver/receiver ICs. |
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 | Uni-directional; 75 V VWM; 121 V VC; same PPPM but lower IPPM (12.3 A); SMA package (DO-214AC) | Requires polarity-aware layout; unsuitable for AC or floating-bias circuits | Select only if circuit topology guarantees unidirectional voltage polarity and board space favors smaller SMA footprint |
| SMCJ75CA | Bi-directional; identical VWM/VC/PPPM specs; DO-214AB (SMC) package; higher thermal mass but larger footprint | Same functional role but requires different pad layout and stencil design | Prefer when higher thermal dissipation margin is needed and DO-214AB mounting is already standardized in production |
Compared with SMAJ75A-E3/57T and SMCJ75CA, the SMCG75HE3/57T uniquely combines AEC-Q101 qualification, DO-215AB's compact gull-wing form factor, and bi-directional symmetry - making it optimal for space-constrained automotive and industrial designs requiring zero-polarity dependency and high-reliability validation.
Availability
SMCG75HE3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial I/O protection, consumer audio line safeguarding, and telecom DSL line interface applications requiring stable component supply and long-term lifecycle continuity.
Supply support for SMCG75HE3/57T 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 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-energy transient suppression in automotive, industrial, and communications infrastructure where AEC-Q101 compliance and precise clamping performance are mandatory.
FAQ
What does the 'HE3' suffix indicate in SMCG75HE3/57T?
The 'HE3' suffix denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. Unlike base 'E3' variants, SMCG75HE3/57T is specifically tested and certified for automotive-grade reliability, including temperature cycling, humidity bias, and mechanical shock - critical for deployment in engine control units and ADAS systems where SMCG75HE3/57T must maintain clamping integrity across extended life cycles.
Is SMCG75HE3/57T suitable for protecting USB or HDMI data lines?
No - SMCG75HE3/57T is not optimized for high-speed data lines. Its junction capacitance is not specified in the datasheet, and its 121 V clamping voltage far exceeds typical USB/HDMI signal swing (±3.3 V or less). For such interfaces, low-capacitance TVS arrays like Vishay's USB3XXX or Diodes Inc.'s D3V3Z9U are appropriate. SMCG75HE3/57T is intended for power/signal lines with slower edges and higher surge energy, such as automotive sensor feeds or industrial 24 V I/O.
How does the DO-215AB package of SMCG75HE3/57T compare to DO-214AB (SMC)?
The DO-215AB (SMCG) package is dimensionally smaller than DO-214AB (SMC), with tighter lead spacing and lower profile - enabling higher board density. While both handle 1500 W PPPM, DO-215AB has higher thermal resistance (RθJA = 75 °C/W vs. ~50 °C/W for DO-214AB), so SMCG75HE3/57T requires strict adherence to the 8.0 mm × 8.0 mm copper pad layout to achieve rated performance. This makes SMCG75HE3/57T ideal for space-constrained automotive modules where DO-214AB cannot fit.
Does SMCG75HE3/57T have polarity markings on the body?
No - SMCG75HE3/57T is a bi-directional device and carries no cathode band or other polarity marking. The DO-215AB package is symmetric, and either terminal functions identically regardless of applied voltage polarity. This eliminates orientation errors during automated placement and simplifies layout for AC-coupled or differential signal paths where polarity is undefined - a key advantage over uni-directional alternatives like SMCG75A or SMAJ75A.
What is the maximum allowable PCB trace length between SMCG75HE3/57T and the protected IC?
To preserve clamping effectiveness, PCB trace inductance must be minimized: total inductance from SMCG75HE3/57T to ground and protected node should remain below 10 nH. This typically translates to ≤5 mm straight trace length with adjacent ground plane, no vias, and direct connection to large copper pour. Longer traces increase let-through voltage during fast transients (e.g., ESD), degrading the 121 V VC spec - verified in application note AN8001 where SMCG75HE3/57T performance degrades measurably beyond 8 mm total loop inductance.
SMCG75HE3/57T 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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 75V
- Voltage - Breakdown (Min):
- 83.3V
- Voltage - Clamping (Max) @ Ipp:
- 134V
- Current - Peak Pulse (10/1000µs):
- 11.2A
- 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)
SMCG75HE3/57T FAQ
1.How can I place an order for SMCG75HE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG75HE3/57T 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 SMCG75HE3/57T reliable?
The price and inventory of SMCG75HE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG75HE3/57T is usually 5 days.
3.What payment methods are accepted for SMCG75HE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG75HE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG75HE3/57T?
SMCG75HE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG75HE3/57T 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 SMCG75HE3/57T?
For technical support, including SMCG75HE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG75HE3/57T requirements.
6.How does Aetrix verify that SMCG75HE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG75HE3/57T 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 SMCG75HE3/57T meets industry standards.
7.What is the process for return or replacement of SMCG75HE3/57T?
All SMCG75HE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG75HE3/57T, 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 SMCG75HE3/57T part is unused and in its original packaging.
Return procedure for SMCG75HE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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