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Vishay General Semiconductor - Diodes Division SMCG75CAHE3/57T
- Part No.:
- SMCG75CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG75CAHE3/57T.pdf
- Description:
- TVS DIODE 75VWM 121VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,007
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Product details
Overview
SMCG75CAHE3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, designed for robust overvoltage protection of sensitive electronics. It features a 75 V standoff voltage (VWM), 83.3–92.1 V breakdown voltage (VBR), 1500 W peak pulse power (PPPM), and clamps to ≤121 V at 12.4 A IPPM under 10/1000 µs waveform - deployed on automotive sensor signal lines, industrial I/O ports, and telecom interface circuits.
For engineers reviewing the SMCG75CAHE3/57T datasheet, SMCG75CAHE3/57T pinout, SMCG75CAHE3/57T application, or SMCG75CAHE3/57T equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 1500 W surge rating, DO-215AB thermal performance (RθJA = 75 °C/W), and RoHS-compliant HE3 suffix indicating automotive-grade reliability.
Technical Context
This device operates as a voltage-clamped crowbar during transients, leveraging an avalanche junction to limit voltage across protected circuitry. Its bidirectional symmetry ensures identical clamping behavior in both polarities, with no polarity marking required on the package.
Designed for high-energy surge immunity, it sustains 12.4 A peak pulse current (IPPM) at 10/1000 µs while maintaining ≤121 V clamping voltage (VC), and supports continuous operation up to TJ = 150 °C with derating above TA = 25 °C per Figure 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 75 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 83.3 V / 92.1 V - guaranteed avalanche breakdown range at 1 mA test current |
| VC @ IPPM | ≤121 V - clamped voltage at 12.4 A peak pulse current, defining worst-case stress on downstream ICs |
| PPPM | 1500 W - peak transient energy handling capacity under standardized 10/1000 µs waveform |
| TJ max | +150 °C - maximum junction temperature enabling use in under-hood automotive environments |
| RθJA | 75 °C/W - thermal resistance from junction to ambient on 8.0 mm × 8.0 mm copper pads, guiding PCB thermal design |
| AEC-Q101 | Qualified - validated for automotive electronic systems per stress test requirements |
Pinout & Package
Package: SMCG (DO-215AB) - surface-mount, low-profile gull-wing leaded case with matte tin-plated terminals, UL 94 V-0 molding compound, and MSL Level 1 moisture sensitivity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; common terminal in bidirectional configuration | No marking - symmetrical terminals enable orientation-agnostic placement on PCB |
| Cathode | Current exit point in forward bias; common terminal in bidirectional configuration | No marking - identical to Anode electrically; device functions identically regardless of orientation |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines without polarity concerns |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control, ADAS sensors, and infotainment interfaces |
| 1500 W peak pulse power | Withstands ISO 7637-2 Pulse 1, 2a, 3a/b and IEC 61000-4-5 surge events without degradation |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns rise time), improving system-level ESD immunity |
| MSL Level 1, 260 °C reflow | Supports standard lead-free SMT assembly without pre-baking or special handling |
Applications
| Automotive Sensor Protection | Industrial I/O Port Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed directly at connector or IC input pins to shunt surge energy before reaching signal conditioning circuitry. Use Value: Maintains signal integrity by limiting transient voltage to ≤121 V, preventing latch-up or gate oxide damage in 5 V/12 V automotive ICs. | Use Scenario: Safeguarding PLC digital input modules and fieldbus interfaces (RS-485, Profibus) against lightning-induced surges and ground potential differences. IC Role / Device Role / Timing Role: Primary front-end transient suppressor mounted at board edge connectors to absorb >1 kV/1 kA surge energy before propagation into isolation barriers or MCU GPIOs. Use Value: Delivers 1500 W peak power handling with <1 ns response, ensuring compliance with IEC 61000-4-5 Level 4 (4 kV/2 kA) test requirements. |
| Telecom Interface Protection | Consumer Device USB/DisplayPort ESD Guard |
Use Scenario: Shielding Ethernet PHYs, DSL line drivers, and base station RF front-end components from induced surges on long cable runs. IC Role / Device Role / Timing Role: Bidirectional clamping element integrated into common-mode choke filter networks to suppress differential and common-mode transients simultaneously. Use Value: Symmetrical VBR (83.3–92.1 V) and VC (≤121 V) ensure balanced protection across twisted-pair data lines without skew or DC bias shift. | Use Scenario: Adding secondary surge margin to USB 2.0/3.0, HDMI, or DisplayPort receptacles in laptops and docking stations exposed to user-handling ESD. IC Role / Device Role / Timing Role: Secondary TVS stage after primary ESD array, absorbing residual energy from multi-kV contact discharges that bypass front-end polymer devices. Use Value: Clamps to ≤121 V within nanoseconds, preventing cumulative stress on high-speed serializer/deserializer ICs rated for 1.8–3.3 V operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ75CA | Same VWM (75 V) and PPPM (1500 W), but SMA (DO-214AC) package with higher RθJA (110 °C/W) | Limited to lower-power or lower-ambient-temperature environments due to reduced thermal dissipation | Select when DO-215AB footprint is unavailable and thermal budget allows ≥35 °C higher junction rise |
| SMCJ75CA | Higher PPPM (3000 W), same VWM (75 V), but larger SMC (DO-214AB) package and non-AEC-Q101 rated | Suitable for industrial mains-connected equipment where automotive qualification is not required | Choose for cost-sensitive industrial designs needing double the surge energy margin without automotive certification |
Compared with SMAJ75CA and SMCJ75CA, the SMCG75CAHE3/57T delivers superior thermal performance in automotive-grade packaging - its DO-215AB footprint enables tighter layout integration and lower junction temperature rise (ΔTJ = IPPM² × RθJA), critical for sustained operation near 150 °C in engine bay modules.
Availability
SMCG75CAHE3/57T is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O port hardening, and telecom interface surge suppression requiring stable component supply and AEC-Q101 traceability.
Supply support for SMCG75CAHE3/57T 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 targets high-reliability transient suppression in space-constrained, thermally demanding environments - engineered for automotive, industrial, and telecom systems where failure modes must be mitigated without compromising signal fidelity or board area.
FAQ
What is the clamping voltage of SMCG75CAHE3/57T at its rated peak pulse current?
The SMCG75CAHE3/57T clamps to a maximum of 121 V at its specified 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 defines the upper voltage limit imposed on protected circuitry during surge events, ensuring compatibility with 75 V-rated downstream components.
Is SMCG75CAHE3/57T suitable for automotive applications?
Yes, SMCG75CAHE3/57T is AEC-Q101 qualified and carries the HE3 suffix denoting RoHS-compliant, automotive-grade construction. It meets stringent stress testing requirements for temperature cycling, humidity, mechanical shock, and surge immunity - making it appropriate for engine control units, ADAS camera modules, and body electronics where reliability under harsh conditions is mandatory.
Does SMCG75CAHE3/57T have polarity markings on the package?
No, SMCG75CAHE3/57T is a bidirectional TVS diode and has no polarity marking on the SMCG (DO-215AB) package. Both terminals are functionally identical, allowing unrestricted orientation during automated placement - a key advantage for differential signal line protection and simplified PCB layout.
What is the thermal resistance of SMCG75CAHE3/57T, and how does it affect PCB layout?
The SMCG75CAHE3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal. This value assumes minimum recommended pad layout per Vishay's datasheet; reducing pad size increases thermal impedance and risks exceeding TJ max = 150 °C during repeated surges - so full-pad implementation is essential for automotive or high-duty-cycle use.
How does the HE3 suffix in SMCG75CAHE3/57T differ from E3 or M3 variants?
The HE3 suffix in SMCG75CAHE3/57T indicates RoHS-compliant construction with AEC-Q101 qualification, distinguishing it from E3 (RoHS-compliant, industrial grade) and M3 (halogen-free + RoHS-compliant, industrial grade). Only HE3 and HM3 variants are certified for automotive applications, and HE3 is supplied in 7" tape-and-reel (57T) packaging optimized for high-volume SMT assembly.
SMCG75CAHE3/57T 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:
- -
- Bidirectional Channels:
- 1
- 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)
SMCG75CAHE3/57T FAQ
1.How can I place an order for SMCG75CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG75CAHE3/57T 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 SMCG75CAHE3/57T reliable?
The price and inventory of SMCG75CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG75CAHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCG75CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG75CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG75CAHE3/57T?
SMCG75CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG75CAHE3/57T 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 SMCG75CAHE3/57T?
For technical support, including SMCG75CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG75CAHE3/57T requirements.
6.How does Aetrix verify that SMCG75CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG75CAHE3/57T 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 SMCG75CAHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCG75CAHE3/57T?
All SMCG75CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG75CAHE3/57T, 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 SMCG75CAHE3/57T part is unused and in its original packaging.
Return procedure for SMCG75CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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