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Vishay General Semiconductor - Diodes Division SMCG48AHE3/57T
- Part No.:
- SMCG48AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG48AHE3/57T.pdf
- Description:
- TVS DIODE 48VWM 77.4VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,182
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Product details
Overview
SMCG48AHE3/57T from Vishay General Semiconductor is a unidirectional surface-mount 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 transients to ≤77.4 V at IPPM - deployed on power rails and signal lines in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the SMCG48AHE3/57T datasheet, SMCG48AHE3/57T pinout, SMCG48AHE3/57T application, or SMCG48AHE3/57T equivalent, key selection criteria include its AEC-Q101 qualification, 1500 W 10/1000 µs surge rating, DO-215AB thermal performance (RθJA = 75 °C/W), and compatibility with automated SMT assembly on 8.0 mm × 8.0 mm copper pads.
Technical Context
The SMCG48AHE3/57T operates as a unidirectional avalanche diode with glass-passivated junction, delivering fast response (<1 ns) to transient events such as ISO 7637-2 load dump or ESD pulses. Its clamping behavior is defined by a low incremental surge resistance and stable VBR tolerance (±5 %), enabling predictable protection margins across temperature (−55 °C to +150 °C).
Designed for high-reliability environments, it meets J-STD-020 MSL Level 1 (260 °C peak reflow), supports 200 A non-repetitive forward surge (IFSM), and maintains <1 µA reverse leakage at VWM - critical for low-power sensor nodes and always-on automotive modules where quiescent current must remain minimal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 48 V - maximum continuous reverse operating voltage before clamping initiates; sets safe margin below system rail voltage. |
| VBR (min/max) | 53.3 V / 58.9 V at IT = 1 mA - defines precise avalanche onset range; ensures consistent turn-on across production lots. |
| VC @ IPPM | ≤77.4 V at 19.4 A - clamping voltage under 10/1000 µs surge; determines protected circuit's maximum transient stress level. |
| PPPM | 1500 W - peak pulse power handling capability; enables survival of high-energy transients like inductive switch-off spikes. |
| ID @ VWM | ≤1.0 µA - ultra-low reverse leakage at stand-off voltage; preserves battery life in always-on automotive subsystems. |
| TJ max. | +150 °C - maximum junction temperature rating; supports operation in under-hood automotive environments. |
| Package | SMCG (DO-215AB) - low-profile surface-mount outline with matte tin-plated leads; optimized for automated placement and thermal dissipation on 8 mm² copper pads. |
Pinout & Package
SMCG48AHE3/57T uses the SMCG (DO-215AB) package: a gull-wing, surface-mount case with two terminals, polarity indicated by a cathode band. The device is unidirectional; the banded end is the cathode. Mounting requires 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal for rated power derating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-side reference node for clamping | Connected to protected line (e.g., 48 V supply rail); conducts during overvoltage to shunt current to ground. |
| Anode | Reference/ground return path | Typically tied to system ground plane; completes clamping path and defines voltage reference for protection threshold. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for engine control, ADAS, and body electronics. |
| Glass passivated junction | Ensures stable VBR and low leakage over lifetime; resists moisture ingress and electrochemical degradation in humid environments. |
| MSL Level 1 (260 °C) | Enables single-reflow soldering without preconditioning; compatible with standard lead-free SMT processes. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients; improves clamping precision for sensitive 48 V microcontrollers and CAN FD transceivers. |
| UL 94 V-0 molding compound | Provides flame-retardant encapsulation required for automotive and industrial safety certifications. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 48 V battery-supplied ECUs from load dump and alternator ripple in mild-hybrid vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 48 V rail and chassis ground to clamp surges up to ±150 V. Use Value: Limits transient voltage to ≤77.4 V, preventing damage to downstream PMICs and MCU power inputs rated for 60 V absolute maximum. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops) in factory-floor pressure sensors exposed to relay switching noise. IC Role / Device Role / Timing Role: TVS mounted across signal and return lines to suppress coupled transients before they reach ADC front-end. Use Value: Sub-1 ns response and ≤1 µA leakage preserve signal integrity and measurement accuracy while surviving repeated 1 kV EFT bursts. |
| Telecom DC Power Input Protection | Consumer USB-C PD Port Clamping |
Use Scenario: Shielding 48 V PoE++ (IEEE 802.3bt) powered devices against lightning-induced surges on Ethernet cables. IC Role / Device Role / Timing Role: Primary clamping device on DC input stage, coordinated with upstream GDT and series impedance. Use Value: 1500 W PPPM rating handles multi-kA induced surges; DO-215AB footprint allows compact layout near connector entry point. |
Use Scenario: Adding secondary overvoltage protection on USB-C VBUS lines in portable docking stations supporting 48 V PD 3.1 Extended Power Range. IC Role / Device Role / Timing Role: Fast-acting clamping element after primary fuse and common-mode choke, referenced to system ground. Use Value: 48 V VWM aligns with PD 3.1 EPR nominal; 77.4 V VC ensures protected buck converters remain within 85 V absolute max rating. |
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-E3/52T | Same VWM (48 V) and PPPM (400 W), but lower power rating; SMA (DO-214AC) package with higher RθJA (110 °C/W). | Limited to lower-energy transients (e.g., IEC 61000-4-2 ESD only); unsuitable for load dump or ISO 7637-2 Pulse 5a. | Select when cost sensitivity outweighs surge energy requirements and board space permits larger SMA footprint. |
| SMCJ48AHE3/57T | Identical electrical specs (VWM, VBR, VC, PPPM) and AEC-Q101 qualification; same DO-215AB package but with alternate marking code. | No functional difference; dual-sourced variant with identical thermal and mechanical behavior. | Use as direct second-source option with no design or layout changes required. |
Compared with SMAJ48A-E3/52T, SMCG48AHE3/57T delivers 3.75× higher surge power handling and superior thermal performance; versus SMCJ48AHE3/57T, it offers identical protection capability with verified cross-compatibility in automotive production programs.
Availability
SMCG48AHE3/57T is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface development, and 48 V telecom power systems requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMCG48AHE3/57T 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 automotive qualification.
The SMCG series was developed specifically for high-energy transient suppression in next-generation 48 V architectures, combining AEC-Q101 compliance, low-profile packaging, and industry-leading PPPM density in the DO-215AB outline.
FAQ
What is the clamping voltage of the SMCG48AHE3/57T under a 10/1000 µs surge?
The SMCG48AHE3/57T clamps to a maximum of 77.4 V when subjected to its rated peak pulse current of 19.4 A (10/1000 µs waveform). This value is measured per ANSI/IEEE C62.35 standards and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring downstream ICs remain within their absolute maximum ratings.
Is SMCG48AHE3/57T suitable for automotive applications?
Yes, SMCG48AHE3/57T is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its −55 °C to +150 °C operating range, MSL Level 1 reflow compatibility, and validation against temperature cycling, HTRB, and ESD make it appropriate for engine control units, ADAS camera modules, and 48 V battery management systems where reliability is mission-critical.
What does the "HE3" suffix indicate in SMCG48AHE3/57T?
The "HE3" suffix in SMCG48AHE3/57T denotes RoHS-compliant construction with AEC-Q101 qualification. Per Vishay's ordering nomenclature, "HE3" identifies the industrial-grade, halogen-free, RoHS-compliant, and AEC-Q101-qualified variant - distinguishing it from "E3" (RoHS, non-AEC-Q101) and "HM3" (halogen-free + AEC-Q101) versions.
How is thermal performance specified for SMCG48AHE3/57T?
SMCG48AHE3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. Its junction-to-lead resistance (RθJL) is 15 °C/W. These values enable accurate thermal derating above 25 °C ambient and confirm suitability for high-power transient absorption without external heatsinking in constrained layouts.
Can SMCG48AHE3/57T be used in bidirectional configurations?
No, SMCG48AHE3/57T is a unidirectional TVS diode, as indicated by the "A" suffix (versus "CA" for bidirectional variants like SMCG48CA). Its cathode band marks polarity, and it conducts only when the anode is negative relative to the cathode. For bidirectional protection, select the SMCG48CAHE3/57T variant, which provides symmetrical clamping in both directions.
SMCG48AHE3/57T 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:
- 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)
SMCG48AHE3/57T FAQ
1.How can I place an order for SMCG48AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG48AHE3/57T 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 SMCG48AHE3/57T reliable?
The price and inventory of SMCG48AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG48AHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCG48AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG48AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG48AHE3/57T?
SMCG48AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG48AHE3/57T 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 SMCG48AHE3/57T?
For technical support, including SMCG48AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG48AHE3/57T requirements.
6.How does Aetrix verify that SMCG48AHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG48AHE3/57T 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 SMCG48AHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCG48AHE3/57T?
All SMCG48AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG48AHE3/57T, 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 SMCG48AHE3/57T part is unused and in its original packaging.
Return procedure for SMCG48AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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