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Vishay General Semiconductor - Diodes Division 1.5SMC47CAHE3_A/H
- Part No.:
- 1.5SMC47CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC47CAHE3_A/H.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:5,663
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Product details
Overview
1.5SMC47CAHE3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients on signal or power lines. It features 47 V standoff voltage (VWM), 64.8 V maximum clamping voltage (VC) at 23.1 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 μs waveform - used to protect automotive sensor interfaces, industrial I/O ports, and telecom line drivers.
For engineers reviewing the 1.5SMC47CAHE3_A/H datasheet, 1.5SMC47CAHE3_A/H pinout, 1.5SMC47CAHE3_A/H application, or 1.5SMC47CAHE3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low incremental surge resistance, thermal performance under repetitive surge conditions, and compatibility with automated SMT assembly on standard PCB pad layouts.
Technical Context
This device operates as a voltage-clamping protector using an avalanche breakdown mechanism, with symmetrical bidirectional conduction enabling suppression of both positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repeated surge stress.
Designed for mounting on 8.0 mm × 8.0 mm copper pads per terminal, it delivers 1500 W peak pulse power while maintaining TJ ≤ 150 °C under derated conditions above 25 °C ambient, and meets J-STD-020 MSL Level 1 with peak reflow temperature up to 260 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 40.2 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown) | 44.7–49.4 V at 1 mA - Verified avalanche threshold range ensuring consistent turn-on during transients. |
| VC (Clamping) | 64.8 V at 23.1 A IPPM - Peak voltage seen by protected circuit during worst-case 10/1000 μs surge; determines downstream component stress. |
| PPPM | 1500 W - Surge energy handling capacity with standardized 10/1000 μs waveform; enables protection against lightning-induced and inductive-switching spikes. |
| TJ max. | 150 °C - Maximum junction temperature rating; supports operation in under-hood automotive and industrial environments. |
| RθJA | 75 °C/W - Thermal resistance from junction to ambient; informs required PCB copper area and airflow for sustained power dissipation. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness per AEC specification. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (negative half-cycle) | Conducts during negative voltage excursions; symmetric with cathode for bidirectional clamping. |
| Cathode | Transient current entry point (positive half-cycle) | Conducts during positive voltage excursions; functionally identical to anode in bidirectional mode. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| 1500 W peak pulse power | Handles high-energy surges from inductive load switching or lightning-induced coupling in industrial and automotive systems. |
| AEC-Q101 qualification | Validates suitability for automotive electronics including engine control modules, ADAS sensors, and body controllers. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and direct placement into reflow without baking, simplifying manufacturing logistics. |
| Glass-passivated junction | Improves long-term stability of breakdown voltage and leakage current under thermal and electrical stress cycles. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor inputs (e.g., pressure, temperature) in engine bay or chassis modules from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential or single-ended signal lines upstream of interface ICs. Use Value: Limits transient voltage to ≤64.8 V, preventing damage to 5 V or 3.3 V interface receivers while maintaining signal integrity during normal operation. |
Use Scenario: Shielding digital input/output terminals of programmable logic controllers from field-wiring induced surges in factory automation environments. IC Role / Device Role / Timing Role: Primary overvoltage protection element mounted directly at connector entry points on PCBs. Use Value: Absorbs 1500 W surge energy without degradation, enabling compliance with IEC 61000-4-5 Level 3 (2 kV/12 Ω) immunity requirements. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Safeguarding Ethernet PHY or RS-485 transceivers connected to unshielded outdoor cabling exposed to induced lightning surges. IC Role / Device Role / Timing Role: First-line transient suppressor located between connector and isolation transformer or bus termination. Use Value: Clamps common-mode transients within nanoseconds, preserving data integrity and avoiding latch-up in communication ICs. |
Use Scenario: Secondary-side surge protection on DC output rails of wall adapters powering smart home devices. IC Role / Device Role / Timing Role: Bidirectional clamp across +VOUT and GND to suppress reverse-polarity connection events and capacitive discharge spikes. Use Value: Withstands repeated 10/1000 μs surges up to 23.1 A, extending adapter lifetime in high-surge environments like shared outlets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode 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); SMB package (smaller footprint, higher RθJA). | Limited to lower-energy transients; suitable only where board space constraints outweigh power-handling needs. | Select when PCB real estate is critical and surge threat level is defined as IEC 61000-4-5 Level 2 or lower. |
| 1.5KE47CA | Through-hole TO-204AA (DO-15) package; identical electrical specs but incompatible with SMT assembly and higher thermal resistance. | Requires manual or wave soldering; not suitable for automated production or high-density layouts. | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required. |
Compared with 1.5SMC47CAHE3_A/H, SMBJ47CA trades peak power for compactness, while 1.5KE47CA sacrifices SMT compatibility for mechanical robustness - making 1.5SMC47CAHE3_A/H the optimal choice for AEC-Q101-compliant, high-power, automated surface-mount protection.
Availability
1.5SMC47CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line drivers requiring stable component supply, AEC-Q101 validation, and 1500 W transient suppression capability.
Supply support for 1.5SMC47CAHE3_A/H 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 1.5SMC Series targets high-energy transient suppression in automotive, industrial, and telecom infrastructure, combining AEC-Q101 qualification, robust SMC packaging, and precise clamping performance for mission-critical signal and power line protection.
FAQ
What is the clamping voltage of the 1.5SMC47CAHE3_A/H under maximum rated surge current?
The 1.5SMC47CAHE3_A/H has a maximum clamping voltage (VC) of 64.8 V at 23.1 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuits during worst-case transient events. The 1.5SMC47CAHE3_A/H maintains this clamping performance consistently due to its glass-passivated junction and bidirectional symmetry.
Is the 1.5SMC47CAHE3_A/H suitable for automotive applications?
Yes, the 1.5SMC47CAHE3_A/H is AEC-Q101 qualified and specifically designed for automotive use, including engine control units, ADAS sensors, and body electronics. Its qualification covers temperature cycling, highly accelerated life testing, and ESD robustness. The 1.5SMC47CAHE3_A/H also meets MSL Level 1 for reflow compatibility and operates reliably from –65 °C to +150 °C junction temperature.
How does the bidirectional configuration of the 1.5SMC47CAHE3_A/H affect its circuit implementation?
The 1.5SMC47CAHE3_A/H has no polarity marking and conducts identically in both directions, allowing direct placement across any two nodes subject to bipolar transients - such as differential signal pairs, AC-coupled lines, or floating power rails. Unlike unidirectional TVS diodes, the 1.5SMC47CAHE3_A/H eliminates orientation errors during assembly and simplifies layout by removing the need for series blocking diodes or external bias networks.
What is the thermal resistance of the 1.5SMC47CAHE3_A/H, and how does it impact PCB layout?
The 1.5SMC47CAHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal. To maintain safe junction temperatures during repetitive surges, designers must allocate sufficient copper area and consider airflow. Reducing pad size or omitting thermal vias increases RθJA, potentially causing premature thermal shutdown or parametric drift in the 1.5SMC47CAHE3_A/H.
Does the 1.5SMC47CAHE3_A/H require derating at elevated ambient temperatures?
Yes, the 1.5SMC47CAHE3_A/H requires derating above TA = 25 °C, as shown in Figure 2 of the Vishay datasheet (Document Number: 88303). Its peak pulse power capability decreases linearly with rising ambient temperature - for example, at 85 °C ambient, PPPM drops to approximately 70 % of the rated 1500 W. This derating ensures the 1.5SMC47CAHE3_A/H remains within its 150 °C maximum junction temperature limit under sustained surge conditions.
1.5SMC47CAHE3_A/H 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/H FAQ
1.How can I place an order for 1.5SMC47CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC47CAHE3_A/H 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/H reliable?
The price and inventory of 1.5SMC47CAHE3_A/H 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/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC47CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC47CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC47CAHE3_A/H?
1.5SMC47CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC47CAHE3_A/H 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/H?
For technical support, including 1.5SMC47CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC47CAHE3_A/H requirements.
6.How does Aetrix verify that 1.5SMC47CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC47CAHE3_A/H 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/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC47CAHE3_A/H?
All 1.5SMC47CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC47CAHE3_A/H, 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/H part is unused and in its original packaging.
Return procedure for 1.5SMC47CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC47CAHE3_A/H Tags
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