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Vishay General Semiconductor - Diodes Division 1.5SMC300A-M3/57T
- Part No.:
- 1.5SMC300A-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC300A-M3/57T.pdf
- Description:
- TVS DIODE 256VWM 414VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:3,827
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Product details
Overview
1.5SMC300A-M3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in power and signal lines. It features a 300 V standoff voltage (VWM), 344 V minimum breakdown voltage (VBR), 414 V maximum clamping voltage (VC) at 3.6 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 μs waveform - deployed in automotive power supplies and industrial sensor interfaces.
For engineers reviewing the 1.5SMC300A-M3/57T datasheet, 1.5SMC300A-M3/57T pinout, 1.5SMC300A-M3/57T application, or 1.5SMC300A-M3/57T equivalent, this page delivers verified electrical parameters, SMC (DO-214AB) package details, clamping performance under transient stress, thermal resistance data, and RoHS-compliant halogen-free construction per JESD201 Class 2 whisker testing.
Technical Context
The 1.5SMC300A-M3/57T operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its 344–375 V breakdown range (tested at 1 mA). Its glass-passivated junction ensures stable VBR temperature coefficient of +0.110 %/°C and low incremental surge resistance for consistent clamping during repetitive transients.
Designed for surface-mount assembly on 8.0 mm × 8.0 mm copper pads, it delivers 1500 W peak pulse power with 0.01 % duty cycle, derated above 25 °C per Fig. 2, and supports operating junction temperatures from –65 °C to +150 °C - meeting MSL Level 1 and J-STD-020 reflow profile up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 300 V - Maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 344–375 V at 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on during overvoltage events |
| VC (Clamping Voltage) | 414 V at IPPM = 3.6 A - Peak voltage seen by protected circuit during 10/1000 μs surge; determines downstream component stress |
| PPPM (Peak Pulse Power) | 1500 W - Energy-handling capacity under standardized 10/1000 μs waveform; validates robustness against lightning and inductive spikes |
| RθJA / RθJL | 75 °C/W (junction-to-ambient), 15 °C/W (junction-to-leads) - Critical for thermal design; dictates required PCB copper area and heatsinking strategy |
| IFSM (Surge Current) | 200 A (8.3 ms half-sine) - Withstands short-duration forward surges in rectifier or crowbar configurations |
| Leakage Current (ID) | 1.0 μA max at VWM - Ensures minimal standby power loss and signal integrity in high-impedance circuits |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Polarity marked with cathode band; unidirectional operation only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to lower-potential side of protected line; defines conduction direction during clamping |
| Cathode | Avalanche conduction terminal / Surge return path | Connected to higher-potential side (e.g., supply rail); carries full transient current to ground or return path |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables protection against IEC 61000-4-5 Level 4 surges (4 kV line-earth) without cascaded stages |
| Low clamping ratio (VC/VBR ≈ 1.19) | Minimizes voltage overshoot across protected ICs, reducing risk of gate oxide damage in MOSFETs and microcontrollers |
| MSL Level 1, 260 °C reflow compatible | Supports single-pass lead-free reflow without popcorn cracking or delamination |
| Halogen-free, RoHS-compliant (M3 suffix) | Fulfills environmental compliance for automotive and industrial end-equipment certifications (e.g., ELV, RoHS Directive) |
| –65 °C to +150 °C operating range | Validates use in under-hood automotive modules and outdoor industrial enclosures without derating |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load dump and alternator transients per ISO 7637-2 Pulse 5a. IC Role / Device Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges above 300 V. Use Value: Limits peak voltage to 414 V during 1500 W transients, preventing damage to CAN transceivers and power management ICs. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops) in factory automation sensors exposed to ESD and cable discharge. IC Role / Device Role: TVS mounted across signal and return lines to shunt fast-rising transients before reaching ADC inputs. Use Value: Sub-1 ns response time and 1.0 μA leakage preserve signal accuracy while suppressing ±8 kV contact ESD per IEC 61000-4-2. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Securing -48 V telecom rectifier outputs against lightning-induced surges on outside plant wiring. IC Role / Device Role: Primary-stage TVS on input bus, coordinated with upstream fuses and secondary MOVs. Use Value: 300 V VWM matches nominal -48 V system derating; 414 V VC avoids tripping downstream overvoltage lockouts. |
Use Scenario: Suppressing inductive kickback from brushed DC motors in home appliances (e.g., washing machine pumps). IC Role / Device Role: Mounted across motor terminals to clamp flyback voltage during PWM switching. Use Value: 200 A IFSM rating handles repeated commutation surges; glass-passivated junction ensures long-term reliability under thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ300A-M3/57T | Lower PPPM (600 W), same VWM/VBR/VC, SMB package (smaller footprint, higher RθJA) | Not suitable for 1500 W surge requirements; limited to lighter-duty consumer interfaces | Select only if board space is constrained and surge energy is ≤600 W |
| 1.5KE300A-T | Through-hole DO-201 package, identical VWM/VBR/VC/PPPM, but no halogen-free or MSL-1 qualification | Requires wave soldering; incompatible with automated SMT lines and high-reliability automotive reflow profiles | Choose only for legacy through-hole designs where RoHS/halogen-free compliance is not mandated |
Compared with SMBJ300A-M3/57T and 1.5KE300A-T, the 1.5SMC300A-M3/57T uniquely combines 1500 W SMT capability, halogen-free construction, MSL Level 1 compatibility, and automotive-grade thermal robustness - making it the sole option for high-energy, high-volume, RoHS-compliant industrial and automotive applications.
Availability
1.5SMC300A-M3/57T is available at Aetrix Electronics and suitable for automotive power systems, industrial sensor interfaces, telecom DC inputs, and appliance motor drives requiring stable component supply, long-lifecycle support, and traceable halogen-free sourcing.
Supply support for 1.5SMC300A-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 diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive qualification.
The 1.5SMC Series was engineered for high-power, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where robustness, repeatability, and regulatory compliance are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC300A-M3/57T under a 10/1000 μs surge?
The 1.5SMC300A-M3/57T has a maximum clamping voltage (VC) of 414 V when subjected to its rated peak pulse current of 3.6 A with a 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet 88303 and defines the upper voltage limit imposed on protected circuitry during standardized surge events.
Is the 1.5SMC300A-M3/57T suitable for automotive applications?
Yes - the 1.5SMC300A-M3/57T is halogen-free and RoHS-compliant (M3 suffix), qualified to MSL Level 1, and supports junction temperatures up to +150 °C. While the base 1.5SMC300A-M3 variant is commercial grade, Vishay offers AEC-Q101-qualified versions (e.g., 1.5SMC300AHM3_B/H) for automotive use; confirm ordering code suffix for qualification status.
What does the "M3" suffix mean in 1.5SMC300A-M3/57T?
The "M3" suffix in 1.5SMC300A-M3/57T indicates halogen-free, RoHS-compliant construction with matte tin-plated leads, compliant with JESD201 Class 2 whisker testing. It distinguishes this variant from "E3" (RoHS-compliant but not halogen-free) and "HM3" (halogen-free + AEC-Q101 qualified).
How does the 1.5SMC300A-M3/57T compare to bidirectional TVS diodes?
The 1.5SMC300A-M3/57T is unidirectional and intended for DC line protection where polarity is fixed - such as +12 V rails or negative-grounded telecom supplies. Bidirectional variants (e.g., 1.5SMC300CA) are used for AC lines or floating signals; using a unidirectional device on AC risks forward conduction and failure.
What PCB pad layout is recommended for optimal thermal performance of the 1.5SMC300A-M3/57T?
Vishay specifies mounting the 1.5SMC300A-M3/57T on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal to achieve rated 1500 W pulse power. Smaller pads increase thermal resistance and reduce surge handling; thermal relief traces must be minimized to maintain RθJL = 15 °C/W.
1.5SMC300A-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):
- 256V
- Voltage - Breakdown (Min):
- 285V
- Voltage - Clamping (Max) @ Ipp:
- 414V
- Current - Peak Pulse (10/1000µs):
- 3.6A
- 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)
1.5SMC300A-M3/57T FAQ
1.How can I place an order for 1.5SMC300A-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC300A-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 1.5SMC300A-M3/57T reliable?
The price and inventory of 1.5SMC300A-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 1.5SMC300A-M3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC300A-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC300A-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC300A-M3/57T?
1.5SMC300A-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC300A-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 1.5SMC300A-M3/57T?
For technical support, including 1.5SMC300A-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC300A-M3/57T requirements.
6.How does Aetrix verify that 1.5SMC300A-M3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC300A-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 1.5SMC300A-M3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC300A-M3/57T?
All 1.5SMC300A-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC300A-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 1.5SMC300A-M3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC300A-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC300A-M3/57T Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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