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Vishay General Semiconductor - Diodes Division SMCG43CAHE3/57T
- Part No.:
- SMCG43CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG43CAHE3/57T.pdf
- Description:
- TVS DIODE 43VWM 69.4VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,381
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Product details
Overview
SMCG43CAHE3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, designed for robust overvoltage protection on signal and power lines. It features a 43 V stand-off voltage (VWM), 47.8–52.8 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (10/1000 µs), clamping voltage of 69.4 V at 21.6 A IPPM, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMCG43CAHE3/57T datasheet, SMCG43CAHE3/57T pinout, SMCG43CAHE3/57T application, or SMCG43CAHE3/57T equivalent, this device is selected for high-energy surge suppression in automotive sensor interfaces, industrial I/O protection, and telecom line conditioning where bidirectional clamping, low clamping ratio, and MSL Level 1 reflow compatibility are critical.
Technical Context
The SMCG43CAHE3/57T operates as a bidirectional avalanche diode with symmetrical clamping in both polarities, enabling protection of AC-coupled or floating signal paths without polarity constraints. Its glass-passivated junction ensures stable VBR tolerance and long-term reliability under repetitive surge stress.
Designed for surface-mount use on 8.0 mm × 8.0 mm copper pads, it delivers 1500 W peak pulse power per the 10/1000 µs waveform while maintaining a low thermal resistance (RθJL = 15 °C/W) and operating junction temperature range of –55 °C to +150 °C - supporting deployment in under-hood automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 43 V - Maximum continuous reverse working voltage before leakage exceeds 1 µA; defines safe operating margin for 36 V nominal systems. |
| VBR (min/max) | 47.8 V / 52.8 V at 1 mA - Tight 10.5% tolerance ensures predictable turn-on across production lots and temperature. |
| VC @ IPPM | 69.4 V at 21.6 A - Clamping voltage during 10/1000 µs surge; provides 26.4 V headroom above VWM for protected ICs. |
| PPPM | 1500 W - Peak pulse power handling capability; supports IEC 61000-4-5 Level 4 (4 kV/2 Ω) surge testing. |
| TJ max. | +150 °C - Enables operation in high-temperature automotive engine control units and industrial motor drives. |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test requirements including HTOL, TC, and ESD. |
| Package | SMCG (DO-215AB) - Low-profile SMD package with gull-wing leads; compatible with automated pick-and-place and J-STD-020 reflow (260 °C peak). |
Pinout & Package
SMCG43CAHE3/57T uses the SMCG (DO-215AB) surface-mount package: a bidirectional device with no polarity marking; both terminals are electrically symmetrical and interchangeable. The case conforms to JEDEC DO-215AB outline, featuring gull-wing leads and glass-passivated chip die.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as anode or cathode depending on instantaneous polarity; no fixed polarity - enables AC-line or floating-bus protection. |
| Terminal 2 | Anode/Cathode (bidirectional) | Electrically identical to Terminal 1; symmetrical construction eliminates orientation constraints during PCB layout and assembly. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of differential pairs, AC signals, or ungrounded buses without external polarity management. |
| AEC-Q101 qualification | Validates reliability for automotive applications including ADAS sensors, body control modules, and infotainment power rails. |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes voltage overshoot during transients, reducing stress on downstream MOSFETs, microcontrollers, and analog front-ends. |
| MSL Level 1 rating | Supports unlimited floor life and standard reflow profiles up to 260 °C peak - eliminates baking requirements and simplifies manufacturing. |
| Glass-passivated junction | Improves long-term stability of breakdown voltage and leakage current under thermal cycling and humidity exposure. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN FD and LIN bus transceivers from load dump and inductive switching transients in vehicle chassis modules. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential bus lines to clamp ±100 V surges within nanoseconds. Use Value: Prevents latch-up or permanent damage to transceivers rated for only ±40 V common-mode range while maintaining signal integrity. |
Use Scenario: Shielding 24 V DC digital input channels in programmable logic controllers against field-wiring induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS connected between input line and ground to shunt >1 kV transients before reaching optocoupler inputs. Use Value: Eliminates need for external series impedance or RC filtering, preserving fast edge response (<1 µs) for high-speed discrete I/O scanning. |
| Telecom Line Interface | Consumer Power Adapter Output |
|
Use Scenario: Safeguarding Ethernet PHY magnetics and PoE injectors from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Bidirectional TVS mounted across transformer secondary windings to clamp mode-common transients. Use Value: Maintains IEEE 802.3af/at compliance by limiting clamped voltage to <75 V - below isolation barrier breakdown thresholds. |
Use Scenario: Secondary-side overvoltage protection on 5 V/9 V USB-C PD adapter outputs exposed to hot-plug and cable fault events. IC Role / Device Role / Timing Role: Fast-response TVS placed between VBUS and GND to absorb 1500 W surges without affecting regulation loop stability. Use Value: Prevents catastrophic failure of USB port controllers and protects connected devices during accidental short-to-VBUS events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43CA | Same VWM (43 V) and bidirectional configuration, but lower PPPM (400 W) and larger SMA (DO-214AC) package. | Limited to lower-energy surges (IEC 61000-4-5 Level 2); less suitable for automotive under-hood locations due to higher RθJA. | Select when cost sensitivity outweighs surge margin and board space allows larger footprint. |
| SMCJ43CA | Same VWM and DO-214AB package, but higher PPPM (1500 W) and wider VBR tolerance (43.2–47.8 V); not AEC-Q101 qualified. | Acceptable for industrial/commercial use but requires additional qualification effort for automotive deployment. | Choose when AEC-Q101 is not mandated and legacy SMCJ footprint reuse is prioritized. |
Compared with SMAJ43CA and SMCJ43CA, the SMCG43CAHE3/57T uniquely combines AEC-Q101 qualification, DO-215AB's compact gull-wing form factor, and guaranteed 1500 W surge handling - making it the preferred choice for next-generation automotive and space-constrained industrial designs requiring zero compromise on reliability or performance.
Availability
SMCG43CAHE3/57T is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line interface circuits requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMCG43CAHE3/57T 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 high-reliability, automotive-qualified components.
The SMCG series was developed specifically for high-power, surface-mount transient suppression in demanding automotive and industrial environments - balancing low clamping voltage, tight VBR tolerance, and robust thermal performance in a compact gull-wing package.
FAQ
What does the "CA" suffix indicate in SMCG43CAHE3/57T?
The "CA" suffix in SMCG43CAHE3/57T denotes a bidirectional configuration - meaning the device provides symmetrical transient voltage suppression in both polarities. Unlike unidirectional variants (e.g., SMCG43A), it has no cathode marking and functions identically regardless of voltage polarity applied across its terminals, making it ideal for AC-coupled or floating signal lines.
Is SMCG43CAHE3/57T suitable for automotive applications?
Yes, SMCG43CAHE3/57T is AEC-Q101 qualified and manufactured with HE3 suffix - indicating RoHS compliance and automotive-grade reliability. It meets stringent stress tests including high-temperature operating life, temperature cycling, and ESD, and is widely deployed in engine control units, ADAS camera modules, and body electronics where sustained +125 °C operation and surge immunity are required.
What is the clamping voltage of SMCG43CAHE3/57T and why does it matter?
The SMCG43CAHE3/57T clamps at 69.4 V when subjected to its rated peak pulse current of 21.6 A (10/1000 µs waveform). This value is critical because it defines the maximum voltage imposed on protected circuitry during a surge event - ensuring downstream ICs rated for ≤70 V absolute maximum survive transient exposure without degradation or failure.
How does the SMCG (DO-215AB) package differ from SMA or SMC packages?
The SMCG (DO-215AB) package used by SMCG43CAHE3/57T features gull-wing leads and a lower profile than SMA (DO-214AC) or SMC (DO-214AB), enabling tighter board spacing and improved thermal conduction via shorter lead paths. Its MSL Level 1 rating allows direct placement into standard reflow ovens without moisture-sensitive handling - unlike many SMC variants requiring baking prior to assembly.
Can SMCG43CAHE3/57T replace SMCG43A in an existing design?
No - SMCG43CAHE3/57T is bidirectional while SMCG43A is unidirectional, with opposite polarity markings and different IV characteristics under forward bias. Substituting them without circuit review risks improper clamping behavior, especially in DC-biased lines. Layout changes, including removal of polarity-dependent routing and verification of system-level surge path symmetry, are required before replacement.
SMCG43CAHE3/57T 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):
- 43V
- Voltage - Breakdown (Min):
- 47.8V
- Voltage - Clamping (Max) @ Ipp:
- 69.4V
- Current - Peak Pulse (10/1000µs):
- 21.6A
- 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)
SMCG43CAHE3/57T FAQ
1.How can I place an order for SMCG43CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG43CAHE3/57T 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 SMCG43CAHE3/57T reliable?
The price and inventory of SMCG43CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG43CAHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCG43CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG43CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG43CAHE3/57T?
SMCG43CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG43CAHE3/57T 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 SMCG43CAHE3/57T?
For technical support, including SMCG43CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG43CAHE3/57T requirements.
6.How does Aetrix verify that SMCG43CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG43CAHE3/57T 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 SMCG43CAHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCG43CAHE3/57T?
All SMCG43CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG43CAHE3/57T, 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 SMCG43CAHE3/57T part is unused and in its original packaging.
Return procedure for SMCG43CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG43CAHE3/57T Tags
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