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Vishay General Semiconductor - Diodes Division 1.5SMC47AHM3_A/H
- Part No.:
- 1.5SMC47AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC47AHM3_A/H.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,090
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Product details
Overview
1.5SMC47AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, rated for 47 V breakdown voltage (VBR = 44.7–49.4 V at IT = 1.0 mA), 64.8 V maximum clamping voltage (VC) at 23.1 A peak pulse current (IPPM), and 1500 W peak pulse power (10/1000 µs). It protects automotive-grade signal lines and power rails against ESD, lightning surges, and inductive switching transients.
For engineers reviewing the 1.5SMC47AHM3_A/H datasheet, 1.5SMC47AHM3_A/H pinout, 1.5SMC47AHM3_A/H application, or 1.5SMC47AHM3_A/H equivalent, this part delivers AEC-Q101 qualification, halogen-free RoHS compliance, low incremental surge resistance, and MSL Level 1 moisture sensitivity - critical for automotive electronics, industrial sensor interfaces, and high-reliability DC power input stages.
Technical Context
The 1.5SMC47AHM3_A/H operates as a unidirectional avalanche diode with cathode-band polarity marking, leveraging glass-passivated junction technology for stable breakdown behavior and fast response (<1 ns). Its clamping action begins at VWM = 40.2 V (stand-off voltage), limiting transient overvoltage before reaching VC = 64.8 V under 23.1 A IPPM.
Designed for surface-mount assembly on 8.0 mm × 8.0 mm copper pads, it features RθJA = 75 °C/W and RθJL = 15 °C/W thermal resistance, enabling reliable operation up to TJ = +150 °C. The device meets UL 497B recognition (QVGQ2) and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 44.7 V / 49.4 V at IT = 1.0 mA - defines precise avalanche onset range for predictable clamping threshold |
| VWM | 40.2 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 64.8 V at 23.1 A (10/1000 µs) - peak voltage seen by protected circuit during worst-case surge |
| PPPM | 1500 W - surge energy handling capacity per single transient event, supporting automotive ISO 7637-2 Pulse 1/2a/5a |
| IFSM | 200 A (8.3 ms half-sine) - withstands high-current inrush without failure during power-up or fault conditions |
| TJ max. | +150 °C - enables use in under-hood automotive environments and high-ambient industrial enclosures |
| Package | SMC (DO-214AB) - industry-standard 2-pin surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads, compliant with J-STD-002 and JESD22-B102 solderability standards. Cathode indicated by band marking on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential side of protected line; enables bidirectional surge shunting only when paired with complementary device |
| Cathode | Current exit point during reverse-biased clamping | Connected to higher-potential rail (e.g., VIN); conducts surge current to ground when VIN exceeds VWM |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for global automotive OEMs and industrial equipment manufacturers |
| 1500 W peak pulse power | Handles severe transients per ISO 7637-2 and IEC 61000-4-5 without degradation |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes voltage overshoot across protected ICs, reducing risk of latch-up or gate oxide damage |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free reflow profiles without preconditioning or baking |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and GND to clamp positive-going surges above 40.2 V. Use Value: Limits peak voltage to 64.8 V during 23.1 A transients, preventing damage to downstream LDOs and microcontrollers. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC I/O modules. IC Role / Device Role / Timing Role: TVS mounted at connector interface to absorb ESD (±15 kV contact) and cable discharge events. Use Value: Sub-1 ns response ensures clamping occurs before sensitive op-amps or ADC inputs experience overstress. |
| Telecom DC Power Feeds | Consumer Device USB Power Ports |
Use Scenario: Shielding PoE-powered network switches from induced surges on 48 V DC input lines. IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side DC bus after isolation transformer and rectifier. Use Value: 1500 W rating supports repeated surge exposure in outdoor telecom cabinets per IEC 61000-4-5 Level 4. |
Use Scenario: Adding robustness to USB-C PD input circuits in portable speakers and docking stations. IC Role / Device Role / Timing Role: Secondary-level TVS on VCONN or VBUS lines to suppress hot-plug transients and ESD coupling. Use Value: Halogen-free construction aligns with consumer brand sustainability mandates while maintaining 64.8 V clamping performance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ47A-E3/57T | Same VBR range (44.7–49.4 V), but SMA package (smaller footprint, lower PPPM = 400 W) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a or high-current load dump | Select when board space is constrained and surge threat level is limited to IEC 61000-4-2/4-4 only |
| 1.5KE47A | Through-hole DO-201 package, identical electrical specs but no AEC-Q101 or halogen-free certification | Not qualified for automotive production; requires manual insertion or wave soldering | Choose for cost-sensitive industrial prototypes where AEC-Q101 and RoHS are not mandated |
Compared with SMAJ47A-E3/57T and 1.5KE47A, the 1.5SMC47AHM3_A/H uniquely combines AEC-Q101 qualification, halogen-free compliance, SMC surface-mount compatibility, and full 1500 W surge capability - making it the only option qualified for volume automotive production with zero layout compromise.
Availability
1.5SMC47AHM3_A/H is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom DC power feeds requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for 1.5SMC47AHM3_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 designs and manufactures discrete semiconductors including diodes, MOSFETs, and optoelectronics, with emphasis on reliability, efficiency, and application-specific performance.
The 1.5SMC Series targets high-power transient suppression in automotive, industrial, and telecom systems, delivering standardized 1500 W surge protection in compact SMC packages with AEC-Q101 and RoHS options.
FAQ
What is the clamping voltage of the 1.5SMC47AHM3_A/H under maximum surge conditions?
The 1.5SMC47AHM3_A/H exhibits a maximum clamping voltage (VC) of 64.8 V when subjected to its rated peak pulse current of 23.1 A using the standard 10/1000 µs waveform. This value is measured at TA = 25 °C with devices mounted on 8.0 mm × 8.0 mm copper pads per JEDEC guidelines. The 1.5SMC47AHM3_A/H maintains this clamping performance across its full operating temperature range, ensuring consistent protection for downstream ICs.
Is the 1.5SMC47AHM3_A/H qualified for automotive applications?
Yes, the 1.5SMC47AHM3_A/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" and documentation in datasheet 88303. It is specifically intended for automotive use cases including engine control units, body control modules, and ADAS sensor interfaces. The 1.5SMC47AHM3_A/H also meets JESD201 Class 2 whisker resistance and UL 497B recognition, fulfilling key automotive reliability and safety requirements.
What does the "_A/H" suffix mean in 1.5SMC47AHM3_A/H?
The "_A/H" suffix in 1.5SMC47AHM3_A/H indicates two attributes: "A" denotes AEC-Q101 qualification for the 1.5SMC47A variant, and "H" specifies packaging in 7-inch diameter plastic tape and reel with 850 units per reel. This matches Vishay's ordering convention shown in the "Ordering Information" section of datasheet 88303, where "H" corresponds to the 57T carrier format.
How does the 1.5SMC47AHM3_A/H compare to bidirectional TVS diodes like 1.5SMC47CHM3_A/H?
The 1.5SMC47AHM3_A/H is unidirectional and features a cathode band for polarity identification, whereas 1.5SMC47CHM3_A/H is bidirectional with no polarity marking and symmetric clamping in both directions. The 1.5SMC47AHM3_A/H has VWM = 40.2 V and VBR = 44.7–49.4 V, while the bidirectional version has VWM = 40.2 V and VBR = 44.7–49.4 V in each direction. Use the 1.5SMC47AHM3_A/H for DC power line protection where polarity is fixed; choose the "C" version for AC-coupled or floating signal lines.
What is the thermal resistance of the 1.5SMC47AHM3_A/H, and how does it affect PCB layout?
The 1.5SMC47AHM3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-leads resistance (RθJL) of 15 °C/W, measured on minimum recommended pad layout (8.0 mm × 8.0 mm copper per terminal). To maintain TJ ≤ 150 °C during repetitive surges, PCB layout must provide adequate copper area and avoid thermal bottlenecks - the 1.5SMC47AHM3_A/H relies on thermal conduction through its leads into the board, not air convection.
1.5SMC47AHM3_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:
- 1
- Bidirectional Channels:
- -
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC47AHM3_A/H FAQ
1.How can I place an order for 1.5SMC47AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC47AHM3_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 1.5SMC47AHM3_A/H reliable?
The price and inventory of 1.5SMC47AHM3_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 1.5SMC47AHM3_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC47AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC47AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC47AHM3_A/H?
1.5SMC47AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC47AHM3_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 1.5SMC47AHM3_A/H?
For technical support, including 1.5SMC47AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC47AHM3_A/H requirements.
6.How does Aetrix verify that 1.5SMC47AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC47AHM3_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 1.5SMC47AHM3_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC47AHM3_A/H?
All 1.5SMC47AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC47AHM3_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 1.5SMC47AHM3_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC47AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC47AHM3_A/H Tags
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