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Vishay General Semiconductor - Diodes Division SMCG48CAHE3/57T
- Part No.:
- SMCG48CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG48CAHE3/57T.pdf
- Description:
- TVS DIODE 48VWM 77.4VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,318
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Product details
Overview
SMCG48CAHE3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) surface-mount package, designed for high-energy surge protection on signal and power lines. It features a 48 V stand-off voltage (VWM), 1500 W peak pulse power (PPPM), clamping voltage of 77.4 V at 19.4 A IPPM, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMCG48CAHE3/57T datasheet, SMCG48CAHE3/57T pinout, SMCG48CAHE3/57T application, or SMCG48CAHE3/57T equivalent, key selection criteria include bidirectional clamping symmetry, low clamping ratio (VC/VWM = 1.61), MSL Level 1 moisture sensitivity, and compatibility with automated SMT assembly on 8.0 mm × 8.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped shunt protector using an avalanche breakdown mechanism. Its bidirectional structure enables symmetrical clamping in both polarities without polarity marking, and its glass-passivated junction ensures stable breakdown characteristics over temperature and lifetime.
The SMCG48CAHE3/57T delivers 1500 W peak pulse power under the standardized 10/1000 µs waveform, with thermal resistance RθJA = 75 °C/W and RθJL = 15 °C/W, supporting robust transient energy dissipation while maintaining junction temperature ≤ 150 °C under defined PCB layout conditions.
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 - guaranteed breakdown voltage range at 1 mA test current |
| VC @ IPPM | 77.4 V at 19.4 A - clamping voltage during 10/1000 µs surge, limiting downstream voltage stress |
| PPPM | 1500 W - peak transient power handling capability per JEDEC standard waveform |
| TJ max. | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| MSL Level | Level 1 (per J-STD-020) - no floor life limitation; safe for reflow without dry-pack requirements |
| AEC-Q101 | Qualified - validated for automotive electronic systems per stress test requirements |
Pinout & Package
Package: SMCG (DO-215AB) - low-profile, gull-wing surface-mount package with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; clamping node in negative transients | Bidirectional symmetry means this terminal serves as cathode during positive surges and anode during negative surges |
| Cathode | Current exit terminal in forward bias; clamping node in positive transients | No band marking - terminals are functionally identical; polarity irrelevant for bidirectional operation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics including engine control, body modules, and ADAS sensor interfaces |
| Low incremental surge resistance | Enables tighter clamping (VC/VWM = 1.61) and reduced let-through energy to protected ICs |
| Glass passivated junction | Ensures long-term stability of breakdown voltage and leakage current across temperature and humidity stress |
| MSL Level 1 rating | Eliminates bake-out or dry-pack requirements prior to reflow, reducing manufacturing overhead |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth, 2 kV line-line) on properly laid out PCBs |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting ABS wheel speed sensors and ambient temperature sensors exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Shunt clamping element placed directly at connector entry point to divert surge energy before reaching analog front-end or microcontroller input pins. Use Value: Maintains signal integrity by limiting transient voltage to ≤ 77.4 V during 19.4 A surges, preventing latch-up or gate oxide damage in downstream ASICs. |
Use Scenario: Safeguarding CAN transceivers (e.g., TJA1042, SN65HVD230) against ESD and fast transient bursts in factory automation networks. IC Role / Device Role / Timing Role: Bidirectional voltage clamp across CAN_H/CAN_L differential pair, symmetrically suppressing ±15 kV contact ESD (IEC 61000-4-2) and 10/1000 µs surges. Use Value: Preserves bus timing margins by clamping within 1.5 ns response time and avoids false dominant/recessive state errors during transients. |
| Consumer Power Adapter Input | Telecom Line Card Surge Protection |
Use Scenario: Secondary-side DC input protection for USB-C PD adapters and wireless charging controllers subjected to hot-plug and capacitive discharge events. IC Role / Device Role / Timing Role: Standoff-rated TVS placed between DC input rail and ground, absorbing repetitive 100–500 W surges from upstream switching noise or cable coupling. Use Value: Enables compact design with 48 V VWM matching common 5 V–24 V adapter outputs while sustaining 6.5 W steady-state power dissipation at 50 °C ambient. |
Use Scenario: Primary protection for Ethernet PHYs and DSL line drivers in residential gateways exposed to lightning-induced surges on RJ-45 ports. IC Role / Device Role / Timing Role: First-stage shunt protector on each twisted-pair line, coordinated with gas discharge tubes (GDTs) for multi-level protection architecture. Use Value: Provides precise clamping at 77.4 V to prevent premature triggering of secondary protectors while surviving 1500 W single-event surges per IEC 61000-4-5. |
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 | Unidirectional; lower PPPM (400 W); SMA (DO-214AC) package; no AEC-Q101 qualification | Limited to single-polarity DC rails; unsuitable for AC-coupled or differential lines | Select only for cost-sensitive industrial DC supplies where automotive qualification and bidirectionality are unnecessary |
| SMCJ48CA | Same electrical specs and DO-214AB package; lacks HE3 suffix (no AEC-Q101 or RoHS-compliant matte tin plating) | Not qualified for automotive use; may require additional qualification testing for OEM programs | Acceptable for non-automotive industrial designs where traceability and whisker resistance are not mandated |
Compared with SMAJ48A-E3/57T and SMCJ48CA, the SMCG48CAHE3/57T uniquely combines bidirectional clamping, 1500 W surge rating, AEC-Q101 qualification, and MSL Level 1 packaging-making it the only option suitable for automotive-grade CAN, LIN, and sensor interface protection without derating or secondary qualification.
Availability
SMCG48CAHE3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN bus nodes, telecom line cards, and consumer power adapter inputs requiring stable component supply and full AEC-Q101 compliance.
Supply support for SMCG48CAHE3/57T 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 was developed specifically for high-power, automotive-qualified transient suppression in space-constrained surface-mount applications-targeting harsh-environment electronics where failure modes must be mitigated without compromising board area or thermal performance.
FAQ
What is the clamping voltage of the SMCG48CAHE3/57T under a 10/1000 µs surge?
The SMCG48CAHE3/57T clamps to 77.4 V at its rated peak pulse current of 19.4 A under the standardized 10/1000 µs waveform. This value is measured per JEDEC test conditions on the minimum recommended 8.0 mm × 8.0 mm copper pad layout and defines the maximum voltage imposed on protected circuitry during surge events.
Is the SMCG48CAHE3/57T suitable for automotive applications?
Yes, the SMCG48CAHE3/57T is AEC-Q101 qualified and carries the HE3 suffix indicating RoHS compliance and automotive-grade qualification. It is explicitly rated for use in automotive subsystems including body electronics, powertrain sensors, and ADAS interfaces where transient immunity and long-term reliability are critical.
Does the SMCG48CAHE3/57T have polarity markings?
No, the SMCG48CAHE3/57T is a bidirectional TVS diode and has no polarity marking on the package. Its symmetrical breakdown behavior means both terminals are functionally identical - there is no anode or cathode designation, and orientation during placement does not affect electrical performance.
What is the maximum operating temperature for the SMCG48CAHE3/57T?
The SMCG48CAHE3/57T has a maximum junction temperature (TJ max.) of +150 °C and an operating junction/storage temperature range of –55 °C to +150 °C. This allows reliable operation in under-hood automotive environments and industrial enclosures with elevated ambient temperatures.
What packaging format is used for the SMCG48CAHE3/57T?
The SMCG48CAHE3/57T is supplied in 7-inch diameter plastic tape and reel packaging (package code 57T), with 850 units per reel. This format supports high-speed automated pick-and-place assembly and complies with EIA-481 standards for SMT manufacturing.
SMCG48CAHE3/57T 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):
- 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)
SMCG48CAHE3/57T FAQ
1.How can I place an order for SMCG48CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG48CAHE3/57T 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 SMCG48CAHE3/57T reliable?
The price and inventory of SMCG48CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG48CAHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCG48CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG48CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG48CAHE3/57T?
SMCG48CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG48CAHE3/57T 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 SMCG48CAHE3/57T?
For technical support, including SMCG48CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG48CAHE3/57T requirements.
6.How does Aetrix verify that SMCG48CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG48CAHE3/57T 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 SMCG48CAHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCG48CAHE3/57T?
All SMCG48CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG48CAHE3/57T, 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 SMCG48CAHE3/57T part is unused and in its original packaging.
Return procedure for SMCG48CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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