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Vishay General Semiconductor - Diodes Division SMCG48AHE3/9AT
- Part No.:
- SMCG48AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG48AHE3/9AT.pdf
- Description:
- TVS DIODE 48VWM 77.4VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,856
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Product details
Overview
SMCG48AHE3/9AT 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 48 V stand-off voltage (VWM), 53.3–58.9 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (PPPM), 19.4 A peak pulse current (IPPM), and clamps to ≤77.4 V at rated surge. It is AEC-Q101 qualified and used in automotive power line and sensor interface protection.
For engineers reviewing the SMCG48AHE3/9AT datasheet, SMCG48AHE3/9AT pinout, SMCG48AHE3/9AT application, or SMCG48AHE3/9AT equivalent, this page delivers verified electrical parameters, mechanical package data, real-world use cases, and validated alternative parts for automotive-grade circuit protection design.
Technical Context
The SMCG48AHE3/9AT operates as a unidirectional avalanche diode with glass-passivated junction, optimized for fast response (<1 ns) to transient surges such as ISO 7637-2 pulses and ESD events. Its low incremental surge resistance ensures stable clamping under high-current transients up to 19.4 A (10/1000 µs waveform).
Designed for surface-mount automated placement, it meets J-STD-020 MSL Level 1, supports 260 °C reflow peak temperature, and maintains operation across -55 °C to +150 °C junction temperature range. The cathode-band-marked DO-215AB package enables polarity-aware PCB layout in space-constrained automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 48 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 53.3 V / 58.9 V at 1 mA - Confirmed breakdown threshold range for reliable turn-on margin |
| VC @ IPPM | ≤77.4 V at 19.4 A - Clamped voltage during full-rated 10/1000 µs surge, limiting downstream stress |
| PPPM | 1500 W - Peak transient energy handling capacity per single event |
| ID @ VWM | ≤1.0 µA - Ultra-low leakage preserves signal integrity in high-impedance circuits |
| TJ max | +150 °C - Enables deployment in under-hood automotive environments |
| Package | SMCG (DO-215AB) - Low-profile SMD outline with 0.31" × 0.31" copper pad requirement |
Pinout & Package
SMCG48AHE3/9AT uses the SMCG (DO-215AB) surface-mount package: 2-terminal, gull-wing leadform, matte tin-plated leads solderable per J-STD-002, with cathode identified by a band on the body. Dimensions: 7.87 mm × 9.64 mm × 2.41 mm (L × W × H). Molding compound complies with UL 94 V-0.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to protected circuit ground | Reference node for clamping action - ties to system GND to shunt surge current away from ICs |
| Cathode | Current exit point in forward bias; marked with band, connects to protected line | Surge input node - placed directly on power/signal line upstream of load to intercept transients |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS sensors |
| Glass-passivated junction | Ensures long-term reliability and stable VBR under thermal cycling and humidity exposure |
| MSL Level 1 rating | Enables standard SMT reflow without moisture sensitivity concerns or baking requirements |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., load dump, inductive kick) |
| RoHS-compliant HE3 suffix | Meets automotive environmental standards and supports lead-free manufacturing compliance |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump (ISO 7637-2 Pulse 5a) and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges above 48 V. Use Value: Limits peak voltage to ≤77.4 V during 1500 W transients, preventing damage to MCU power supplies and CAN transceivers. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop) in factory automation sensors. IC Role / Device Role / Timing Role: Bidirectional-capable but used unidirectionally on supply-side to suppress coupling noise from adjacent motor drives. Use Value: Sub-1 µA leakage at 48 V preserves loop accuracy; 19.4 A surge rating handles field-wiring fault currents. |
| Automotive Lighting Control | Onboard Charger Communication Lines |
Use Scenario: Shielding LED driver ICs and MOSFET gate drivers from switching-induced spikes in headlamp modules. IC Role / Device Role / Timing Role: Mounted at driver input to absorb inductive flyback energy from relay coils and solenoids. Use Value: Fast <1 ns response captures sub-microsecond edges; DO-215AB footprint fits tight board areas near connectors. | Use Scenario: Protecting UART or LIN bus lines between EV onboard charger and vehicle BMS during high-voltage switching events. IC Role / Device Role / Timing Role: Unidirectional TVS on VCC and signal lines to prevent latch-up in level-shifters and isolators. Use Value: 75 °C/W junction-to-ambient thermal resistance allows direct PCB copper pad heatsinking without extra thermal vias. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ48A-E3/57T | Same VWM (48 V), lower PPPM (400 W), SMA (DO-214AC) package, 13.4 A IPPM | Lower surge rating suits consumer-grade or non-automotive industrial use | Select when cost-sensitive designs tolerate reduced surge margin and require smaller footprint |
| SMCJ48AHE3/9AT | Same VWM (48 V), higher PPPM (1500 W), identical DO-215AB package, same AEC-Q101 qualification | Functionally identical but differs in ordering code - not a distinct variant | Not a true alternative; verify exact part marking and reel packaging before substitution |
Compared with SMCG48AHE3/9AT, SMAJ48A-E3/57T offers lower surge capability in a smaller package, while SMCJ48AHE3/9AT is a packaging variant rather than a functional alternative - making SMCG48AHE3/9AT the preferred choice for AEC-Q101-compliant 1500 W protection in DO-215AB.
Availability
SMCG48AHE3/9AT is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface, and EV onboard charger protection requiring stable component supply and AEC-Q101 compliance.
Supply support for SMCG48AHE3/9AT 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, and protection devices with emphasis on reliability and automotive qualification.
The SMCG series was developed specifically for high-energy transient suppression in harsh automotive and industrial environments, balancing clamping performance, thermal robustness, and SMT manufacturability.
FAQ
What is the clamping voltage of SMCG48AHE3/9AT under full-rated surge conditions?
The SMCG48AHE3/9AT clamps to a maximum of 77.4 V when subjected to its rated 19.4 A peak pulse current (10/1000 µs waveform). This value is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet revision 09-Jan-2024. The clamping behavior ensures downstream components like MCUs and transceivers remain within safe operating voltage limits during transient events. SMCG48AHE3/9AT achieves this with low incremental surge resistance and a glass-passivated junction.
Is SMCG48AHE3/9AT suitable for automotive applications?
Yes, SMCG48AHE3/9AT is AEC-Q101 qualified and explicitly designed for automotive use, including engine control units, lighting modules, and ADAS sensor interfaces. Its -55 °C to +150 °C operating junction temperature range, MSL Level 1 rating, and RoHS-compliant HE3 suffix meet stringent automotive manufacturing and reliability requirements. The SMCG48AHE3/9AT datasheet confirms qualification per AEC-Q101 test conditions, making it appropriate for under-hood and cabin applications.
What does the "HE3" suffix indicate in SMCG48AHE3/9AT?
The "HE3" suffix in SMCG48AHE3/9AT denotes RoHS-compliant, AEC-Q101-qualified construction with matte tin-plated leads. Per Vishay's ordering documentation, HE3 indicates industrial-grade reliability plus automotive qualification - distinct from E3 (RoHS only) and HM3 (halogen-free + AEC-Q101). This suffix ensures SMCG48AHE3/9AT meets both environmental compliance and automotive stress testing standards required for Tier 1 suppliers.
How does SMCG48AHE3/9AT differ from SMAJ48A-E3/57T?
SMCG48AHE3/9AT delivers 1500 W peak pulse power in a DO-215AB package with AEC-Q101 qualification, whereas SMAJ48A-E3/57T provides only 400 W in the smaller DO-214AC (SMA) package and lacks automotive qualification. Their VWM and VBR ranges align, but SMCG48AHE3/9AT supports higher surge currents (19.4 A vs. 13.4 A) and superior thermal performance (RθJA = 75 °C/W on specified pads). For automotive or high-reliability industrial use, SMCG48AHE3/9AT is the technically superior choice.
What is the recommended PCB pad layout for SMCG48AHE3/9AT?
Vishay specifies a minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad area for each terminal of SMCG48AHE3/9AT to achieve rated thermal and surge performance. These pads must be connected with adequate copper pour to dissipate heat during repetitive transients. The DO-215AB outline drawing shows 0.038"–0.058" lead width and 0.220"–0.245" body length; proper stencil aperture design ensures reliable solder joint formation without bridging. SMCG48AHE3/9AT performance is validated only with this layout.
SMCG48AHE3/9AT 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):
- 48V
- Voltage - Breakdown (Min):
- 53.3V
- Voltage - Clamping (Max) @ Ipp:
- 77.4V
- Current - Peak Pulse (10/1000µs):
- 19.4A
- 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)
SMCG48AHE3/9AT FAQ
1.How can I place an order for SMCG48AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG48AHE3/9AT 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 SMCG48AHE3/9AT reliable?
The price and inventory of SMCG48AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG48AHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG48AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG48AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG48AHE3/9AT?
SMCG48AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG48AHE3/9AT 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 SMCG48AHE3/9AT?
For technical support, including SMCG48AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG48AHE3/9AT requirements.
6.How does Aetrix verify that SMCG48AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG48AHE3/9AT 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 SMCG48AHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG48AHE3/9AT?
All SMCG48AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG48AHE3/9AT, 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 SMCG48AHE3/9AT part is unused and in its original packaging.
Return procedure for SMCG48AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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