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Vishay General Semiconductor - Diodes Division SMCG48CAHE3/9AT
- Part No.:
- SMCG48CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG48CAHE3/9AT.pdf
- Description:
- TVS DIODE 48VWM 77.4VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,873
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Product details
Overview
SMCG48CAHE3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, designed for robust overvoltage protection of signal and power lines. 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), clamping voltage of 77.4 V at 19.4 A IPPM, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SMCG48CAHE3/9AT datasheet, SMCG48CAHE3/9AT pinout, SMCG48CAHE3/9AT application, or SMCG48CAHE3/9AT equivalent, key selection criteria include bidirectional clamping performance under 10/1000 µs surge, low incremental surge resistance, MSL Level 1 reflow compatibility, and RoHS-compliant, AEC-Q101-qualified construction for automotive electronics protection.
Technical Context
This device operates as a voltage-clamped crowbar during transients, leveraging an avalanche junction to limit voltage across protected circuits. Its bidirectional symmetry ensures identical clamping behavior in both polarities, with no polarity marking required on the package.
Designed for fast response (<1 ns), it handles repetitive and non-repetitive surges per IEC 61000-4-5 and ISO 7637-2, with thermal resistance RθJA = 75 °C/W and RθJL = 15 °C/W enabling reliable operation up to TJ = +150 °C.
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 - Ensures predictable turn-on threshold across production lot |
| VC @ IPPM | 77.4 V at 19.4 A - Clamped voltage during 10/1000 µs surge defines worst-case stress on downstream ICs |
| PPPM | 1500 W - Peak surge energy handling capacity under standardized waveform |
| TJ max | +150 °C - Enables deployment in under-hood automotive environments |
| MSL Level | Level 1 (260 °C peak) - Supports standard lead-free reflow without preconditioning |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
Package: SMCG (DO-215AB) - Surface-mount, low-profile gull-wing package with matte tin-plated leads, UL 94 V-0 molding compound, and 8.0 mm × 8.0 mm copper pad layout recommendation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry (bidirectional) | Terminal accepts surge current in either polarity; no cathode band marking on bidirectional variants |
| Cathode | Current exit (bidirectional) | Electrically symmetric with Anode; terminals interchangeable in circuit layout |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR and VC in both directions eliminates need for polarity-aware placement |
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., load dump, ESD) |
| Glass passivated junction | Enhances long-term stability and moisture resistance in harsh environments |
| MSL Level 1 rating | Enables direct placement into high-temperature lead-free reflow without baking or dry pack |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting LIN bus or 12 V power rails in body control modules against ISO 7637-2 pulse 1, 2a, and 5a transients. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed directly at connector entry point to shunt surge energy to ground before reaching MCU or transceiver. Use Value: Limits clamped voltage to ≤77.4 V, ensuring downstream 48 V-rated CAN/LIN transceivers remain within absolute maximum ratings. | Use Scenario: Safeguarding analog outputs (4–20 mA) and digital I/O of industrial pressure/temperature sensors exposed to motor switching noise. IC Role / Device Role / Timing Role: Bidirectional transient suppressor bridging signal line to ground, absorbing ±1 kV EFT bursts per IEC 61000-4-4. Use Value: Fast <1 ns response prevents latch-up in precision op-amps and ADC front-ends while maintaining signal integrity below 48 V DC bias. |
| Telecom DSL Line Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Shielding ADSL/VDSL line drivers from lightning-induced surges on twisted-pair telephone lines. IC Role / Device Role / Timing Role: Primary protection device in series with transformer-coupled line interface, rated for repeated 10/1000 µs surges up to 1500 W. Use Value: Withstands ≥100 surges at rated PPPM, preserving signal fidelity and preventing transformer saturation during clamping. | Use Scenario: Suppressing inductive kickback from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals to clamp flyback voltage spikes during MOSFET commutation. Use Value: 77.4 V clamping voltage prevents exceedance of 80 V MOSFET drain-source breakdown, extending switch lifetime and reducing EMI. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ48CA-E3/57T | Same VWM (48 V), lower PPPM (400 W), SMA (DO-214AC) package, higher RθJA (110 °C/W) | Lower surge capacity; suited for consumer-grade, non-automotive designs with less stringent surge requirements | Select when cost sensitivity outweighs automotive qualification and 1500 W surge headroom |
| SMCJ48CA | Same VWM and PPPM (1500 W), but unqualified for AEC-Q101 and uses base P/N without HE3 suffix | Lacks automotive reliability validation; not recommended for safety-critical vehicle subsystems | Acceptable for industrial controls where AEC-Q101 is not mandated, but requires separate qualification effort |
Compared with SMAJ48CA-E3/57T and SMCJ48CA, SMCG48CAHE3/9AT delivers automotive-grade reliability (AEC-Q101), superior thermal performance (RθJA = 75 °C/W vs. 110 °C/W), and guaranteed 1500 W surge handling in a compact DO-215AB footprint-making it optimal for space-constrained, high-reliability automotive and industrial deployments.
Availability
SMCG48CAHE3/9AT is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom line interfaces, and appliance motor drives requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMCG48CAHE3/9AT 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMCG series was developed specifically for high-power, bidirectional transient suppression in automotive and industrial systems where AEC-Q101 compliance, low clamping voltage, and surface-mount manufacturability are critical design requirements.
FAQ
What is the clamping voltage of SMCG48CAHE3/9AT and how is it measured?
The clamping voltage (VC) of SMCG48CAHE3/9AT is 77.4 V, measured at a peak pulse current (IPPM) of 19.4 A under a standardized 10/1000 µs double-exponential surge waveform. This value reflects the maximum voltage seen across the device during transient suppression and is verified per ANSI/IEEE C62.35 test conditions on the minimum recommended 8.0 mm × 8.0 mm copper pad layout.
Is SMCG48CAHE3/9AT suitable for automotive applications?
Yes, SMCG48CAHE3/9AT is AEC-Q101 qualified and carries the HE3 suffix denoting RoHS compliance and automotive-grade qualification. It meets requirements for under-hood and cabin electronics, including temperature cycling, high-temperature reverse bias, and accelerated life testing-making SMCG48CAHE3/9AT appropriate for engine control, ADAS, and body electronics.
Does SMCG48CAHE3/9AT have polarity markings on the package?
No, SMCG48CAHE3/9AT is a bidirectional TVS diode and carries no cathode band or polarity marking. Its symmetrical construction means either terminal may serve as anode or cathode depending on transient polarity-simplifying PCB layout and eliminating orientation errors during automated placement.
What is the thermal resistance of SMCG48CAHE3/9AT and why does it matter?
SMCG48CAHE3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-lead (RθJL) of 15 °C/W. These values determine how effectively heat from surge dissipation transfers to the PCB and ambient environment-critical for sustaining repeated 1500 W pulses without exceeding the +150 °C maximum junction temperature.
How does the SMCG (DO-215AB) package compare to SMA (DO-214AC) or SMC (DO-214AB) in terms of surge handling?
The SMCG (DO-215AB) package used by SMCG48CAHE3/9AT offers lower thermal resistance than SMA (RθJA ≈ 110 °C/W) and improved power density over SMC, enabling 1500 W PPPM in a footprint only slightly larger than SMA. Its gull-wing leads provide stronger solder joint reliability under thermal cycling-key for automotive applications where SMCG48CAHE3/9AT is deployed.
SMCG48CAHE3/9AT 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:
- -
- 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)
SMCG48CAHE3/9AT FAQ
1.How can I place an order for SMCG48CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG48CAHE3/9AT 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 SMCG48CAHE3/9AT reliable?
The price and inventory of SMCG48CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG48CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG48CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG48CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG48CAHE3/9AT?
SMCG48CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG48CAHE3/9AT 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 SMCG48CAHE3/9AT?
For technical support, including SMCG48CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG48CAHE3/9AT requirements.
6.How does Aetrix verify that SMCG48CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG48CAHE3/9AT 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 SMCG48CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG48CAHE3/9AT?
All SMCG48CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG48CAHE3/9AT, 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 SMCG48CAHE3/9AT part is unused and in its original packaging.
Return procedure for SMCG48CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG48CAHE3/9AT Tags
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