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Vishay General Semiconductor - Diodes Division 1.5SMC47CA-M3/9AT
- Part No.:
- 1.5SMC47CA-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC47CA-M3/9AT.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:4,686
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Product details
Overview
1.5SMC47CA-M3/9AT from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMC (DO-214AB) package, designed for high-energy surge protection. It features a 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 - deployed to safeguard signal lines and power rails in automotive sensor interfaces and industrial control I/O.
For engineers reviewing the 1.5SMC47CA-M3/9AT datasheet, 1.5SMC47CA-M3/9AT pinout, 1.5SMC47CA-M3/9AT application, or 1.5SMC47CA-M3/9AT equivalent, key selection criteria include bidirectional clamping symmetry, low incremental surge resistance, MSL Level 1 moisture sensitivity, halogen-free RoHS compliance (M3 suffix), and AEC-Q101 qualification readiness via HM3 variant.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping performance in forward and reverse directions - critical for AC-coupled or floating signal paths. Its glass-passivated junction ensures stable breakdown behavior and fast response time (<1 ns), while the SMC package supports automated placement and meets UL 94 V-0 flammability rating.
The device sustains repetitive 10/1000 μs surges at 0.01% duty cycle and derates linearly above 25 °C ambient per Fig. 2, with thermal resistance RθJA = 75 °C/W and RθJL = 15 °C/W. It exhibits no polarity marking, distinguishing it from unidirectional variants that use a cathode band.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 40.2 V - Maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping threshold. |
| VBR (Breakdown) | 44.7–49.4 V at 1 mA - Verified avalanche onset range; ensures predictable turn-on during transients. |
| VC (Clamping) | 64.8 V at IPPM = 23.1 A - Peak voltage seen by protected circuit under full-rated surge; determines downstream component stress. |
| PPPM | 1500 W - Surge energy handling capacity with 10/1000 μs waveform; enables robust lightning and ESD immunity per IEC 61000-4-5. |
| ID (Leakage) | 1.0 μA max at VWM - Minimal standby power loss and signal integrity impact in high-impedance circuits. |
| TJ max | +150 °C - Enables operation in under-hood automotive and industrial environments without thermal shutdown. |
| Package | SMC (DO-214AB) - Standardized 8.13 mm × 6.22 mm surface-mount outline compatible with IPC-7351B footprint guidelines. |
Pinout & Package
Package: SMC (DO-214AB), bidirectional configuration - no polarity marking on body. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102, with MSL Level 1 rating (peak reflow ≤260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (either polarity) | Acts as cathode during positive half-cycle; forms symmetrical conduction path with opposite terminal. |
| Cathode | Transient current entry (either polarity) | Acts as anode during negative half-cycle; completes bidirectional clamping loop with Anode terminal. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR and VC in both directions - eliminates need for polarity-aware layout in differential or AC signal protection. |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 (4 kV) surges on 2 Ω source impedance without degradation. |
| Glass passivated junction | Ensures long-term stability of breakdown voltage and low leakage drift over temperature and lifetime. |
| Halogen-free & RoHS-compliant (M3) | Meets JEDEC J-STD-204 and EU Directive 2015/863; supports green manufacturing and end-of-life recycling. |
| MSL Level 1 rating | Zero floor life limitation - can be stored indefinitely at ≤30 °C/60% RH without baking prior to reflow. |
Applications
| Automotive Sensor Interface | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN FD and LIN bus transceivers from load dump and ISO 7637-2 pulses in engine control modules. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential signal pair or supply rail to shunt transient energy before IC input stages. Use Value: Maintains signal integrity during 100 V/50 ms load dump events while limiting clamped voltage to <65 V - within absolute max rating of most 5 V/3.3 V transceivers. |
Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Primary front-end TVS on each isolated input channel, mounted directly at connector entry point. Use Value: Clamps 1500 W surges within 1 ns to prevent latch-up or gate oxide damage in optocoupler input drivers and protection FETs. |
| Telecom Line Card Protection | Consumer Power Adapter EMI Filtering |
Use Scenario: Shielding Ethernet PHY interface pins (e.g., RJ45 magnetics secondary side) against induced lightning surges in outdoor access points. IC Role / Device Role / Timing Role: Secondary-stage TVS after gas discharge tube (GDT), providing low-clamp refinement for fast-rising transients. Use Value: Reduces residual clamping voltage from >100 V (GDT alone) to 64.8 V - enabling use of lower-voltage-rated Ethernet magnetics and PHYs. |
Use Scenario: Suppressing switching noise and line transients on DC output rails of USB-C PD adapters and smart home power supplies. IC Role / Device Role / Timing Role: Final-stage transient suppressor downstream of LC filter, guarding against output short-circuit recovery spikes. Use Value: Limits overshoot during 100 ns–1 μs recovery events to <65 V, preventing overvoltage stress on connected USB devices and battery management ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ47CA | Lower PPPM (600 W), same VWM/VC, SMB package (smaller footprint, higher RθJA = 90 °C/W) | Limited to lower-energy transients (IEC 61000-4-5 Level 2); unsuitable for automotive load dump. | Select when board space is constrained and surge threat level is ≤600 W - verify thermal margin at 50 °C ambient. |
| 1.5KE47CA | Through-hole DO-201 package, identical electrical specs, higher mounting thermal mass | Requires wave solder or hand-solder process; not compatible with fully SMT production lines. | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required. |
Compared with SMBJ47CA and 1.5KE47CA, the 1.5SMC47CA-M3/9AT delivers optimal balance of 1500 W surge capability, SMT manufacturability, and thermal performance in a mid-size surface-mount package - making it the preferred choice for volume automotive and industrial designs requiring AEC-Q101-ready variants.
Availability
1.5SMC47CA-M3/9AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, telecom line card surge hardening, and consumer power adapter EMI filtering requiring stable component supply, halogen-free compliance, and MSL Level 1 handling.
Supply support for 1.5SMC47CA-M3/9AT 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, precision, and automotive-grade qualification.
The 1.5SMC Series targets high-reliability transient suppression in harsh environments - engineered for automotive, industrial, and telecom applications where consistent clamping, low leakage, and AEC-Q101 readiness are mandatory.
FAQ
What does the "CA" suffix indicate in 1.5SMC47CA-M3/9AT?
The "CA" suffix in 1.5SMC47CA-M3/9AT denotes a bidirectional configuration - meaning the device provides symmetrical transient voltage suppression in both polarities, with identical breakdown and clamping characteristics regardless of voltage polarity applied. This eliminates the need for orientation-specific placement on PCBs used in AC-coupled or floating signal paths.
Is 1.5SMC47CA-M3/9AT AEC-Q101 qualified?
The base 1.5SMC47CA-M3/9AT is halogen-free and RoHS-compliant but not AEC-Q101 qualified. However, Vishay offers the HM3 variant (e.g., 1.5SMC47CAHM3_A/I) which adds AEC-Q101 qualification for automotive applications - confirmed in the ordering information table and footnote (1) of the datasheet.
What is the maximum clamping voltage of 1.5SMC47CA-M3/9AT at rated surge current?
The maximum clamping voltage (VC) of 1.5SMC47CA-M3/9AT is 64.8 V at a peak pulse current (IPPM) of 23.1 A, measured using the standard 10/1000 μs double-exponential waveform. This value is guaranteed across the full operating temperature range and defines the worst-case voltage imposed on protected circuitry during a full-rated transient event.
How does the M3 suffix differ from E3 in 1.5SMC47CA-M3/9AT?
The M3 suffix in 1.5SMC47CA-M3/9AT indicates halogen-free, RoHS-compliant construction meeting JEDEC J-STD-204, whereas E3 denotes standard RoHS compliance without halogen-free assurance. Both meet JESD 201 Class 2 whisker resistance, but M3 is required for strict environmental compliance in EU and Asian markets.
Can 1.5SMC47CA-M3/9AT be used in place of a unidirectional TVS like 1.5SMC47A-M3/9AT?
No - 1.5SMC47CA-M3/9AT is strictly bidirectional and lacks polarity marking, while 1.5SMC47A-M3/9AT is unidirectional with a cathode band. Substituting them requires verifying circuit topology: bidirectional use is mandatory for AC signals or floating grounds; unidirectional is required for DC rails with defined polarity and where reverse leakage must be minimized in one direction.
1.5SMC47CA-M3/9AT 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC47CA-M3/9AT FAQ
1.How can I place an order for 1.5SMC47CA-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC47CA-M3/9AT 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 1.5SMC47CA-M3/9AT reliable?
The price and inventory of 1.5SMC47CA-M3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC47CA-M3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC47CA-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC47CA-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC47CA-M3/9AT?
1.5SMC47CA-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC47CA-M3/9AT 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 1.5SMC47CA-M3/9AT?
For technical support, including 1.5SMC47CA-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC47CA-M3/9AT requirements.
6.How does Aetrix verify that 1.5SMC47CA-M3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC47CA-M3/9AT 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 1.5SMC47CA-M3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC47CA-M3/9AT?
All 1.5SMC47CA-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC47CA-M3/9AT, 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 1.5SMC47CA-M3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC47CA-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC47CA-M3/9AT Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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