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Vishay General Semiconductor - Diodes Division 1.5SMC47CAHE3_A/I
- Part No.:
- 1.5SMC47CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC47CAHE3_A/I.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:2,135
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Product details
Overview
1.5SMC47CAHE3_A/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 1500 W peak pulse power (10/1000 μs), 47 V standoff voltage (VWM), and 64.8 V clamping voltage (VC) at 23.1 A peak pulse current. It protects signal lines and power rails in automotive sensor units, industrial I/O interfaces, and telecom front-end circuits.
For engineers reviewing the 1.5SMC47CAHE3_A/I datasheet, 1.5SMC47CAHE3_A/I pinout, 1.5SMC47CAHE3_A/I application, or 1.5SMC47CAHE3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low thermal resistance (RθJL = 15 °C/W), and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped shunt protector: during transients exceeding its breakdown voltage (VBR min = 44.7 V, max = 49.4 V at 1 mA), it avalanches to divert surge current away from downstream circuitry while maintaining clamped voltage ≤64.8 V. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response (<1.0 ns).
Rated for -65 °C to +150 °C junction temperature, it delivers 6.5 W steady-state power dissipation at TA = 50 °C and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. The HE3 suffix confirms RoHS-compliance and AEC-Q101 qualification for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 40.2 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC/AC working margin. |
| VBR (Breakdown) | 44.7–49.4 V at 1 mA - Voltage at which avalanche conduction initiates; tight tolerance enables precise overvoltage thresholding. |
| VC (Clamping) | 64.8 V at IPPM = 23.1 A - Peak voltage seen by protected circuit during 10/1000 μs surge; determines stress on downstream ICs. |
| PPPM | 1500 W - Surge energy handling capacity under standardized waveform; supports lightning and inductive-switching immunity. |
| RθJL | 15 °C/W - Junction-to-leads thermal resistance; enables efficient heat transfer to PCB copper, critical for repetitive surge duty. |
| TJ max | +150 °C - Maximum allowable junction temperature; supports operation in under-hood automotive and industrial environments. |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress-test requirements including HTGB, HTRB, and TCT; suitable for safety-critical ECUs. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Bidirectional construction means no polarity marking; both terminals are electrically symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Surge current path | Identical terminals conduct equally in either direction; connects across protected line and ground or between differential lines. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), or ungrounded power rails without polarity concerns. |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) and ISO 7637-2 Pulse 5a without degradation when mounted on 8 mm² copper pads. |
| AEC-Q101 qualification | Validated for automotive applications including engine control, ADAS sensors, and infotainment; eliminates need for additional qualification testing. |
| MSL Level 1 rating | Allows unlimited floor life and standard reflow profile (peak 260 °C); compatible with high-volume automated assembly without baking. |
| Glass-passivated junction | Ensures stable leakage current (<1 μA at 40.2 V), low capacitance (~200 pF at 0 V), and long-term reliability under thermal cycling. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load-dump and jump-start transients in vehicle ECUs. IC Role / Device Role / Timing Role: Shunt TVS placed directly at connector entry point to clamp surges before reaching signal conditioning ICs or microcontrollers. Use Value: Maintains signal integrity under ISO 7637-2 Pulse 5a (75 V/350 ms) and prevents latch-up or gate oxide damage in 3.3 V/5 V interface ICs. |
Use Scenario: Safeguarding PLC digital input modules against field-wiring induced surges from relay coils, motor drives, and solenoids. IC Role / Device Role / Timing Role: Bidirectional clamping element across 24 V DC input lines and common reference, absorbing ±1 kV/42 Ω transients. Use Value: Enables robust operation per IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) without derating or external series impedance. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Front-end protection of Ethernet PHYs, PoE injectors, and DSL line drivers exposed to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary surge arrestor on differential pairs (e.g., MDI-X), coordinated with common-mode chokes and secondary TVS. Use Value: Limits clamped voltage to <65 V, preserving PHY ESD tolerance margins and preventing data corruption during 10/700 μs telecom surges. |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters for smart home devices, limiting transient propagation to USB-C PD controllers. IC Role / Device Role / Timing Role: Clamping component across 5–20 V output rails to absorb coupling from primary-side MOSFET switching noise or input surge reflection. Use Value: Prevents false triggering of OVP circuits and extends lifespan of downstream LDOs and USB interface ICs under repeated 1 kV surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ47CA | Same VWM (40.2 V) and VC (64.8 V), but lower PPPM (600 W) and smaller SMB (DO-214AA) package with higher RθJA (100 °C/W). | Limited to lower-energy surges (IEC 61000-4-5 Level 2); less suitable for automotive under-hood or industrial motor drive environments. | Select when board space is constrained and surge threat level is moderate; verify thermal performance with reduced copper area. |
| 1.5KE47CA | Same electrical specs but axial-leaded DO-15 package; no AEC-Q101 qualification; higher RθJA (50 °C/W) and manual assembly only. | Restricted to prototyping, low-volume industrial equipment, or non-automotive applications where automated SMT is not required. | Choose only for legacy designs or cost-sensitive non-automotive use; avoid where AEC-Q101 compliance or reflow compatibility is mandatory. |
Compared with SMBJ47CA and 1.5KE47CA, the 1.5SMC47CAHE3_A/I provides superior surge robustness (1500 W vs. 600 W/1500 W), automotive-grade qualification, and optimized thermal performance for high-reliability SMT production-making it the preferred choice for volume automotive and industrial deployments.
Availability
1.5SMC47CAHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial programmable logic controllers, and telecom line interface cards requiring stable component supply, AEC-Q101 traceability, and consistent SMT placement yield.
Supply support for 1.5SMC47CAHE3_A/I 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, efficiency, and application-specific optimization.
The 1.5SMC Series was engineered for high-power, surface-mount transient suppression in harsh environments-targeting automotive, industrial, and telecom systems where compact size, AEC-Q101 compliance, and repeatable clamping performance are essential.
FAQ
What does the "CA" suffix indicate in 1.5SMC47CAHE3_A/I?
The "CA" suffix in 1.5SMC47CAHE3_A/I denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression in both polarities-ideal for protecting AC-coupled signals, differential buses like RS-485 or CAN, or ungrounded power rails without polarity constraints. This differs from "A"-suffixed unidirectional variants that require correct cathode orientation.
Is 1.5SMC47CAHE3_A/I suitable for automotive applications?
Yes, 1.5SMC47CAHE3_A/I is AEC-Q101 qualified and explicitly designated for automotive use via the "HE3" suffix. It has passed stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling (TCT), making it appropriate for engine control units, ADAS sensors, and body electronics where reliability under thermal and electrical stress is critical.
What is the maximum clamping voltage of 1.5SMC47CAHE3_A/I and how is it measured?
The maximum clamping voltage (VC) of 1.5SMC47CAHE3_A/I is 64.8 V, measured at a peak pulse current (IPPM) of 23.1 A using the standardized 10/1000 μs double-exponential surge waveform. This value represents the highest voltage the device allows across protected circuitry during worst-case transient events, directly determining stress on downstream ICs.
How does the SMC (DO-214AB) package of 1.5SMC47CAHE3_A/I improve thermal performance?
The SMC (DO-214AB) package of 1.5SMC47CAHE3_A/I features low junction-to-leads thermal resistance (RθJL = 15 °C/W), enabling efficient heat transfer from the silicon die to PCB copper pads. When mounted on 8.0 mm × 8.0 mm copper areas per terminal, it sustains 1500 W surge pulses with minimal thermal runaway risk-critical for repetitive surge environments like industrial motor controls.
What is the significance of the "_A/I" suffix in 1.5SMC47CAHE3_A/I?
The "_A/I" suffix in 1.5SMC47CAHE3_A/I indicates packaging: "A" denotes AEC-Q101 qualification level, and "I" specifies 13-inch diameter plastic tape-and-reel delivery containing 3500 units. This format supports high-speed pick-and-place assembly and ensures full traceability for automotive and industrial production programs requiring lot-level documentation.
1.5SMC47CAHE3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 40.2V
- Voltage - Breakdown (Min):
- 44.7V
- Voltage - Clamping (Max) @ Ipp:
- 64.8V
- Current - Peak Pulse (10/1000µs):
- 23.1A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC47CAHE3_A/I FAQ
1.How can I place an order for 1.5SMC47CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC47CAHE3_A/I 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 1.5SMC47CAHE3_A/I reliable?
The price and inventory of 1.5SMC47CAHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC47CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC47CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC47CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC47CAHE3_A/I?
1.5SMC47CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC47CAHE3_A/I 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 1.5SMC47CAHE3_A/I?
For technical support, including 1.5SMC47CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC47CAHE3_A/I requirements.
6.How does Aetrix verify that 1.5SMC47CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC47CAHE3_A/I 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 1.5SMC47CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC47CAHE3_A/I?
All 1.5SMC47CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC47CAHE3_A/I, 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 1.5SMC47CAHE3_A/I part is unused and in its original packaging.
Return procedure for 1.5SMC47CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC47CAHE3_A/I Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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