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Vishay General Semiconductor - Diodes Division SMCG48A-M3/9AT
- Part No.:
- SMCG48A-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG48A-M3/9AT.pdf
- Description:
- TVS DIODE 48VWM 77.4VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,933
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Product details
Overview
SMCG48A-M3/9AT from Vishay General Semiconductor is a unidirectional surface-mount TransZORB® transient voltage suppressor in the SMCG (DO-215AB) package, with 48 V standoff voltage (VWM), 53.3–58.9 V breakdown voltage (VBR), 1500 W peak pulse power (PPPM), and 19.4 A peak pulse current (IPPM). It protects MOSFETs and ICs in automotive power rails and industrial sensor interfaces against inductive switching transients.
For engineers reviewing the SMCG48A-M3/9AT datasheet, SMCG48A-M3/9AT pinout, SMCG48A-M3/9AT application, or SMCG48A-M3/9AT equivalent, key selection criteria include clamping voltage (77.4 V at IPPM), unidirectional polarity, AEC-Q101 qualification, halogen-free RoHS compliance, and DO-215AB thermal performance (RθJA = 75 °C/W).
Technical Context
This device operates as a unidirectional avalanche diode for transient suppression, leveraging glass-passivated junction technology to achieve sub-nanosecond response time and low incremental surge resistance. Its clamping behavior is defined by a 10/1000 µs waveform, with VC = 77.4 V at IPPM = 19.4 A under standard test conditions (TA = 25 °C, 8.0 mm × 8.0 mm copper pads).
The SMCG48A-M3/9AT is rated for TJ = –55 °C to +150 °C, supports 200 A non-repetitive forward surge current (IFSM), and meets J-STD-020 MSL Level 1 with 260 °C lead-free reflow peak. Its matte tin-plated leads comply with JESD 22-B102 solderability and JESD 201 Class 2 whisker resistance.
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 - guaranteed avalanche initiation range for reliable overvoltage detection |
| VC @ IPPM | 77.4 V at 19.4 A - clamping voltage limiting downstream component stress during 10/1000 µs surge |
| PPPM | 1500 W - peak transient energy absorption capability under standardized surge waveform |
| RθJA | 75 °C/W - thermal resistance defining junction-to-ambient temperature rise under 6.5 W steady-state dissipation |
| Polarity | Unidirectional - cathode marked with band; blocks reverse current until VBR exceeded |
| Qualification | AEC-Q101 qualified - validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
Package: SMCG (DO-215AB), surface-mount gull-wing configuration with cathode band marking. Dimensions: 7.87 mm × 9.64 mm × 2.41 mm (L × W × H); terminals are matte tin-plated for J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | Connected to protected circuit ground or low-side return path during transient clamp |
| Cathode | Current exit terminal in forward bias; marked with band | Connected to line/voltage rail being protected; defines directionality of clamping action |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable, repeatable avalanche characteristics and long-term reliability under repeated surge stress |
| Low-profile DO-215AB package | Reduces board space and parasitic inductance vs. axial or larger SMD packages, improving high-frequency transient response |
| AEC-Q101 qualification | Validates suitability for automotive powertrain and body electronics where failure modes must meet stringent stress-test requirements |
| Halogen-free & RoHS compliant (M3 suffix) | Meets environmental compliance mandates without compromising surge robustness or thermal performance |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow processing at 260 °C peak, simplifying manufacturing flow |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppressing load-dump and inductive kickback transients on 48 V battery-fed ECUs and ADAS modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC input to clamp surges before they reach regulator ICs. Use Value: Limits peak voltage to 77.4 V during 1500 W transients, preventing damage to 65 V-rated buck controllers and gate drivers. | Use Scenario: Shielding analog front-end inputs of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: TVS connected across differential signal pair (e.g., RS-485 bus lines) to shunt ESD and fast transients. Use Value: Sub-ns response and 77.4 V clamping protect 3.3 V/5 V ADC inputs while maintaining signal integrity up to 1 MHz. |
| Motor Drive Gate Driver Protection | Telecom DC Power Input Protection |
Use Scenario: Safeguarding high-side N-channel MOSFET gate drivers in BLDC inverters subject to shoot-through-induced voltage spikes. IC Role / Device Role / Timing Role: TVS mounted directly at driver output pin to clamp gate-source overvoltage before it exceeds MOSFET VGS(max). Use Value: 19.4 A IPPM and 77.4 V VC ensure gate oxide remains intact during 100 ns–1 µs switching transients. | Use Scenario: Protecting primary-side rectifiers and PMICs in telecom base station power supplies exposed to lightning-induced surges. IC Role / Device Role / Timing Role: First-line unidirectional suppressor on 48 V DC input before bulk capacitor and isolation stage. Use Value: 1500 W PPPM and AEC-Q101 qualification support sustained operation in harsh outdoor environments per IEC 61000-4-5 Level 4. |
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, RθJA = 110 °C/W | Limited to lower-energy transients; unsuitable for automotive load-dump per ISO 7637-2 Pulse 5a | Select when cost or board density outweighs surge margin; verify thermal derating at >1 W ambient |
| SMCJ48A-M3/9AT | Same VWM (48 V), higher PPPM (1500 W), identical DO-215AB package, but no AEC-Q101 qualification | Acceptable for industrial use only; lacks automotive qualification testing (HTRB, TC, UHAST) | Choose for non-automotive 48 V systems requiring same surge rating but without automotive certification requirement |
Compared with SMCG48A-M3/9AT, SMAJ48A-E3/57T offers lower surge capacity and worse thermal performance in a smaller package, while SMCJ48A-M3/9AT matches surge rating but omits AEC-Q101 validation-making SMCG48A-M3/9AT the sole option for qualified automotive 48 V protection.
Availability
SMCG48A-M3/9AT is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface hardening, and 48 V telecom power input protection requiring stable component supply and full AEC-Q101 traceability.
Supply support for SMCG48A-M3/9AT 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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on high-reliability, high-surge, and automotive-qualified components.
The SMCG series targets high-energy transient suppression in space-constrained, thermally demanding applications-specifically engineered for automotive 12 V/48 V systems and industrial equipment needing AEC-Q101 validation and 1500 W surge handling.
FAQ
What is the clamping voltage of the SMCG48A-M3/9AT under a 10/1000 µs surge?
The SMCG48A-M3/9AT has a maximum clamping voltage (VC) of 77.4 V at its rated peak pulse current (IPPM) of 19.4 A, measured using the standardized 10/1000 µs waveform. This value ensures downstream 65 V-rated ICs remain within safe operating limits during transient events. The SMCG48A-M3/9AT maintains this clamping performance across its specified junction temperature range (–55 °C to +150 °C) when mounted on minimum recommended copper pads.
Is the SMCG48A-M3/9AT suitable for automotive applications?
Yes, the SMCG48A-M3/9AT is AEC-Q101 qualified and explicitly designed for automotive use, including engine control units, ADAS modules, and 48 V mild-hybrid systems. Its qualification covers high-temperature reverse bias (HTRB), temperature cycling, and unbiased highly accelerated stress testing (UHAST). The SMCG48A-M3/9AT also meets ISO 7637-2 Pulse 5a load-dump immunity requirements when applied with appropriate PCB layout.
What does the "M3" suffix indicate in SMCG48A-M3/9AT?
"M3" denotes halogen-free, RoHS-compliant construction with industrial-grade reliability and JESD 201 Class 2 whisker resistance. Unlike "E3" (standard RoHS), M3 ensures zero brominated flame retardants and reduced environmental impact without sacrificing surge performance or thermal robustness. The SMCG48A-M3/9AT retains identical electrical specs and AEC-Q101 qualification as HE3/HM3 variants, making it suitable for both industrial and automotive deployments.
How does the SMCG48A-M3/9AT differ from the SMAJ48A series?
The SMCG48A-M3/9AT delivers 1500 W peak pulse power in a DO-215AB package with RθJA = 75 °C/W, whereas SMAJ48A offers only 400 W in the smaller DO-214AC (SMA) package and RθJA = 110 °C/W. The SMCG48A-M3/9AT also features AEC-Q101 qualification and superior thermal dissipation-critical for sustained surge duty cycles. Both share 48 V VWM, but SMCG48A-M3/9AT is the only one validated for automotive load-dump scenarios.
What is the recommended PCB pad layout for optimal thermal and surge performance of SMCG48A-M3/9AT?
Vishay specifies 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal for rated PPPM and thermal performance. These pads must be connected to internal ground/power planes via ≥4 thermal vias (0.3 mm diameter) per pad to minimize RθJA and sustain 6.5 W steady-state dissipation. The SMCG48A-M3/9AT's DO-215AB footprint requires precise gull-wing alignment to avoid solder bridging-verified in IPC-7351B compliant land patterns.
SMCG48A-M3/9AT 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCG)
SMCG48A-M3/9AT FAQ
1.How can I place an order for SMCG48A-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG48A-M3/9AT 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 SMCG48A-M3/9AT reliable?
The price and inventory of SMCG48A-M3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG48A-M3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG48A-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG48A-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG48A-M3/9AT?
SMCG48A-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG48A-M3/9AT 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 SMCG48A-M3/9AT?
For technical support, including SMCG48A-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG48A-M3/9AT requirements.
6.How does Aetrix verify that SMCG48A-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG48A-M3/9AT 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 SMCG48A-M3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG48A-M3/9AT?
All SMCG48A-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG48A-M3/9AT, 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 SMCG48A-M3/9AT part is unused and in its original packaging.
Return procedure for SMCG48A-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG48A-M3/9AT Tags
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