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Vishay General Semiconductor - Diodes Division 1.5SMC47A-M3/57T
- Part No.:
- 1.5SMC47A-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC47A-M3/57T.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:3,965
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Product details
Overview
1.5SMC47A-M3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection. It features 47 V breakdown voltage (VBR = 44.7–49.4 V at 1 mA), 40.2 V stand-off voltage (VWM), 64.8 V maximum clamping voltage (VC) at 23.1 A peak pulse current, and 1500 W peak pulse power capability with 10/1000 µs waveform - ideal for safeguarding power rails and I/O lines in industrial motor drives.
For engineers reviewing the 1.5SMC47A-M3/57T datasheet, 1.5SMC47A-M3/57T pinout, 1.5SMC47A-M3/57T application, or 1.5SMC47A-M3/57T equivalent, key selection considerations include unidirectional polarity, halogen-free RoHS-compliant M3 suffix, 150 °C max junction temperature, and compatibility with automated SMT placement on standard PCB copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 µA leakage at 40.2 V), then rapidly avalanches below 64.8 V to divert transient energy away from downstream circuitry. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance.
The device is rated for repetitive 10/1000 µs surges at 0.01% duty cycle, with thermal resistance of 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-leads). It meets J-STD-020 MSL Level 1 and JESD201 Class 2 whisker resistance requirements, supporting lead-free reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 44.7 V / 49.4 V at 1 mA - defines precise avalanche onset range for reliable overvoltage triggering |
| VWM | 40.2 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 64.8 V at 23.1 A - clamping voltage during full 1500 W transient, limiting stress on protected ICs |
| PPPM | 1500 W - peak pulse power handling per 10/1000 µs waveform, enabling robust lightning/inductive-spike immunity |
| TJ max | +150 °C - allows operation in high-temperature environments such as automotive engine bays or industrial enclosures |
| Package | SMC (DO-214AB) - industry-standard 2-pin surface-mount outline with 8.0 mm × 8.0 mm copper pad requirement |
| Compliance | Halogen-free, RoHS-compliant (M3 suffix), JESD201 Class 2 whisker resistant |
Pinout & Package
Package: SMC (DO-214AB) - molded plastic case with matte tin-plated leads, UL 94 V-0 rated, dimensions 7.11 mm × 6.22 mm × 2.62 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-side connection in unidirectional configuration | Connected to protected line; avalanche conduction occurs when cathode-to-anode voltage exceeds VBR |
| Anode (unmarked end) | Reference/ground return path | Typically tied to system ground or low-impedance return plane to complete clamping current path |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Enables single-device protection against IEC 61000-4-5 Level 4 (4 kV) surges without cascading devices |
| 64.8 V clamping at 23.1 A | Keeps downstream 48 V rail components (e.g., MOSFET gate drivers, ADC references) within safe operating limits |
| Glass-passivated junction | Ensures long-term stability of VBR and low parameter drift across temperature and lifetime |
| MSL Level 1 moisture sensitivity | Eliminates bake-out requirement prior to reflow, reducing manufacturing cost and process complexity |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns response), improving protection fidelity |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of 48 V DC bus inputs against switching transients from relay coils and contactor arcs. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between bus rail and chassis ground to clamp spikes before they reach DC-DC converters. Use Value: Withstands 23.1 A pulses at 64.8 V clamping, preventing latch-up or gate oxide damage in 48 V power management ICs. |
Use Scenario: Safeguarding LIN bus transceivers and microcontroller I/O pins from load dump and jump-start events. IC Role / Device Role / Timing Role: Standoff-rated TVS on LIN signal line (VWM = 40.2 V) to suppress >100 V transients while remaining transparent during normal 12 V operation. Use Value: Low leakage (<1 µA) avoids signal distortion; fast response preserves LIN timing integrity during ESD bursts. |
| Telecom Power Supplies | Renewable Energy Inverters |
Use Scenario: Input-stage surge suppression on 48 V telecom rectifier outputs exposed to lightning-induced surges on distribution lines. IC Role / Device Role / Timing Role: Primary clamping device upstream of PMICs and hot-swap controllers, absorbing 1500 W pulses without degradation. Use Value: 1500 W rating enables compliance with GR-1089-CORE Level 3 (2 kV/500 A) without parallel staging. |
Use Scenario: DC-link overvoltage protection in solar string inverters where PV array transients couple into MPPT controller inputs. IC Role / Device Role / Timing Role: Bidirectional-capable family variant used in unidirectional mode to clamp positive-going surges on 600 V+ DC strings. Use Value: High VBR tolerance (44.7–49.4 V) supports precise coordination with higher-voltage crowbar circuits in multi-stage protection schemes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ47A-E3/52 | Lower peak power (600 W), SMB package (smaller footprint, higher RθJA = 85 °C/W) | Suitable only for lower-energy transients (e.g., IEC 61000-4-2 ESD); not rated for 10/1000 µs lightning surges | Select when board space is constrained and surge threat level is limited to ESD or low-duty-cycle switching noise |
| 1.5KE47A-T | Through-hole DO-201 package, same electrical specs but incompatible with SMT assembly | Requires wave solder or hand-solder; unsuitable for high-volume automated production | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with SMBJ47A-E3/52 and 1.5KE47A-T, the 1.5SMC47A-M3/57T uniquely delivers 1500 W SMT-compatible surge immunity in a halogen-free, MSL Level 1 package - making it the optimal choice for production-grade industrial and automotive power rail protection where reliability, manufacturability, and regulatory compliance are jointly critical.
Availability
1.5SMC47A-M3/57T is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom power supplies, and renewable energy inverters requiring stable component supply, halogen-free compliance, and AEC-Q101-qualified alternatives.
Supply support for 1.5SMC47A-M3/57T 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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for demanding industrial and automotive applications.
The 1.5SMC Series was engineered specifically for surface-mount transient suppression in high-power-density systems, balancing 1500 W surge capacity with automated assembly compatibility and extended thermal performance up to +150 °C junction temperature.
FAQ
What is the maximum clamping voltage of the 1.5SMC47A-M3/57T under full-rated surge conditions?
The 1.5SMC47A-M3/57T exhibits a maximum clamping voltage (VC) of 64.8 V when subjected to its rated 23.1 A peak pulse current (IPPM) using the standardized 10/1000 µs waveform. This value is guaranteed per Vishay's datasheet (Document Number 88303, Rev. 09-Mar-2026) and represents the upper limit of voltage seen by downstream circuitry during worst-case transient events. Designers must ensure that all protected components have voltage ratings exceeding 64.8 V to maintain functional safety.
Is the 1.5SMC47A-M3/57T suitable for automotive applications requiring AEC-Q101 qualification?
No - the 1.5SMC47A-M3/57T carries the M3 suffix (halogen-free, RoHS-compliant commercial grade) but is not AEC-Q101 qualified. For automotive use, select the HM3 variant (e.g., 1.5SMC47AHM3_A/H), which adds AEC-Q101 qualification while retaining identical electrical specs and SMC packaging. The 1.5SMC47A-M3/57T remains appropriate for industrial and telecom applications where AEC-Q101 is not mandated.
How does the 1.5SMC47A-M3/57T differ from bidirectional TVS diodes like 1.5SMC47CA-M3/57T?
The 1.5SMC47A-M3/57T is unidirectional and features a cathode band for polarity-sensitive placement, whereas 1.5SMC47CA-M3/57T is bidirectional with no polarity marking and symmetric breakdown in both directions. Unidirectional types offer lower leakage at VWM and are preferred for DC rail protection; bidirectional variants suit AC-coupled or floating signal lines. Both share identical VBR, VC, and PPPM, but their circuit integration and layout rules differ fundamentally.
What is the recommended PCB pad layout for optimal thermal and surge performance of the 1.5SMC47A-M3/57T?
Vishay specifies a minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad area per terminal for the 1.5SMC47A-M3/57T to achieve rated 1500 W pulse power and 75 °C/W thermal resistance. Use solid internal ground planes connected via multiple thermal vias, avoid narrow traces, and maintain ≥0.5 mm clearance to adjacent components. Deviating from this layout reduces surge current handling and risks thermal runaway during repetitive transients.
Does the 1.5SMC47A-M3/57T require derating at elevated ambient temperatures?
Yes - the 1.5SMC47A-M3/57T must be derated above TA = 25 °C per Figure 2 in the Vishay datasheet. At 70 °C ambient, its peak pulse power drops to ~70% of 1500 W (≈1050 W), and at 125 °C it falls to ~30% (≈450 W). Continuous power dissipation (PD = 6.5 W) also decreases linearly beyond 50 °C. Thermal modeling and margin analysis are essential for high-temperature deployments such as under-hood automotive or enclosed industrial enclosures.
1.5SMC47A-M3/57T 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC47A-M3/57T FAQ
1.How can I place an order for 1.5SMC47A-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC47A-M3/57T 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 1.5SMC47A-M3/57T reliable?
The price and inventory of 1.5SMC47A-M3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC47A-M3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC47A-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC47A-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC47A-M3/57T?
1.5SMC47A-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC47A-M3/57T 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 1.5SMC47A-M3/57T?
For technical support, including 1.5SMC47A-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC47A-M3/57T requirements.
6.How does Aetrix verify that 1.5SMC47A-M3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC47A-M3/57T 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 1.5SMC47A-M3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC47A-M3/57T?
All 1.5SMC47A-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC47A-M3/57T, 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 1.5SMC47A-M3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC47A-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC47A-M3/57T Tags
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