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Vishay General Semiconductor - Diodes Division 1.5SMC300A-E3/57T
- Part No.:
- 1.5SMC300A-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC300A-E3/57T.pdf
- Description:
- TVS DIODE 256VWM 414VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:9,437
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Product details
Overview
1.5SMC300A-E3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMC (DO-214AB) package, designed for high-energy surge protection. 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 (IPPM), and 1500 W peak pulse power capability with a 10/1000 μs waveform - deployed to protect power rails and signal lines in industrial motor drives and automotive power modules.
For engineers reviewing the 1.5SMC300A-E3/57T datasheet, 1.5SMC300A-E3/57T pinout, 1.5SMC300A-E3/57T application, or 1.5SMC300A-E3/57T equivalent, this page delivers verified electrical parameters, thermal derating behavior, polarity marking, RoHS-compliant packaging, and AEC-Q101 qualification status - all confirmed from Vishay's official 1.5SMC Series specification document (Rev. 09-Mar-2026, Doc. #88303).
Technical Context
The 1.5SMC300A-E3/57T operates as a unidirectional avalanche diode with glass-passivated junction, delivering fast response time (<1 ns) and low incremental surge resistance to clamp transient overvoltages before downstream components are damaged. Its 1500 W peak pulse power rating is defined under standardized 10/1000 μs waveform conditions with 0.01% duty cycle, and thermal performance is characterized by RθJA = 75 °C/W on recommended 8.0 mm × 8.0 mm copper pads.
It exhibits a temperature coefficient of VBR of +0.110 %/°C and supports operating junction temperatures from –65 °C to +150 °C. The cathode band marking enables unambiguous polarity identification during automated placement, and its matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 300 V - Maximum continuous reverse operating voltage before conduction begins; defines safe working limit for DC or RMS line voltage exposure. |
| VBR (min) | 344 V - Minimum breakdown voltage at 1 mA test current; ensures reliable triggering above normal operating transients. |
| VC (max) | 414 V - Maximum clamped voltage at 3.6 A IPPM; determines worst-case voltage seen by protected IC or MOSFET during surge event. |
| PPPM | 1500 W - Peak pulse power handling with 10/1000 μs waveform; quantifies single-event surge energy absorption capacity. |
| IPPM | 3.6 A - Peak pulse current corresponding to VC; used with PCB trace impedance to estimate actual clamping margin. |
| TJ max | +150 °C - Maximum junction temperature; sets thermal design boundary for sustained operation and surge repetition limits. |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance on standard pad layout; informs heatsinking requirements for repetitive surges. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile plastic case meeting UL 94 V-0 flammability rating. Cathode identified by a distinct band on the body; anode is unmarked end. Matte tin-plated terminals ensure compatibility with lead-free reflow processes per J-STD-020 MSL Level 1 (peak 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | High-side connection point for unidirectional TVS configuration | Connects to protected line; conducts surge current toward ground when voltage exceeds VBR. |
| Anode (unmarked end) | Low-side reference terminal | Typically tied to system ground or common return path; completes conduction path during transient clamping. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 24–48 V industrial power rails without derating. |
| Glass-passivated junction | Ensures stable VBR and low leakage (<1 μA at VWM) across temperature and lifetime, critical for low-power sensor interfaces. |
| RoHS-compliant E3 suffix | Meets commercial-grade environmental compliance with matte tin plating and halogen-free molding compound. |
| AEC-Q101 qualified variant available | HE3 suffix version supports automotive powertrain and body electronics requiring validated reliability under temperature cycling and humidity testing. |
| MSL Level 1 rating | Allows direct placement into standard lead-free reflow profiles without baking, reducing manufacturing complexity and cost. |
Applications
| Industrial Motor Drives | Automotive Power Modules |
|---|---|
Use Scenario: Protection of gate drivers and bus voltage sensing circuits against switching-induced transients in 3-phase inverters. IC Role / Device Role / Timing Role: Unidirectional TVS placed between DC-link and ground to clamp flyback spikes from IGBT/MOSFET turn-off. Use Value: Limits voltage overshoot to ≤414 V during 3.6 A surge events, preventing gate oxide damage and false triggering in isolated gate drivers. |
Use Scenario: Surge suppression on 12 V battery-fed control inputs in engine control units (ECUs) and ADAS domain controllers. IC Role / Device Role / Timing Role: Primary front-end protection device on LIN/CAN power domains subjected to load dump and jump-start transients. Use Value: Withstands 1500 W pulses while maintaining <1 μA leakage at 300 V, ensuring minimal quiescent current impact on always-on subsystems. |
| Telecom Power Feeds | Renewable Energy Inverters |
Use Scenario: Input-stage protection for PoE-powered remote radio units exposed to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Standoff-rated TVS on 48 V DC feed line upstream of DC/DC converters and Ethernet PHYs. Use Value: Clamps induced transients within 1 ns to ≤414 V, preserving integrity of IEEE 802.3af/at compliant power delivery circuitry. |
Use Scenario: DC-link overvoltage suppression in solar string inverters where PV array transients couple into MPPT stages. IC Role / Device Role / Timing Role: High-VWM TVS bridging DC+ to ground on 600–1000 V nominal bus architectures. Use Value: 300 V VWM and 414 V VC provide 114 V design margin above 300 V nominal, accommodating system tolerances and aging drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ300A-E3/52 | Lower peak power (600 W), SMB (DO-214AA) package, same VWM/VC but reduced IPPM (1.45 A) | Suitable only for lower-energy transients (e.g., IEC 61000-4-4); not rated for 10/1000 μs lightning surges | Select when board space is constrained and surge threat level is limited to EFT, not lightning or inductive switching. |
| 1.5KE300A | Through-hole DO-201AE package, identical VWM/VBR/VC, but higher RθJA (100 °C/W) and no MSL Level 1 rating | Requires wave soldering or hand assembly; unsuitable for high-volume SMT lines or lead-free reflow | Choose only for legacy through-hole designs or prototyping where automated placement is unavailable. |
Compared with SMBJ300A-E3/52 and 1.5KE300A, the 1.5SMC300A-E3/57T uniquely combines 1500 W surge capability, SMC surface-mount compatibility, MSL Level 1 process readiness, and commercial-grade RoHS compliance - making it the optimal choice for high-reliability industrial and automotive SMT production environments requiring full IEC 61000-4-5 compliance.
Availability
1.5SMC300A-E3/57T is available at Aetrix Electronics and suitable for industrial motor drives, automotive power modules, telecom power feeds, and renewable energy inverters requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for 1.5SMC300A-E3/57T 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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5SMC Series was engineered for high-energy transient suppression in harsh environments - targeting industrial automation, automotive electronics, and telecom infrastructure where robustness, consistency, and AEC-Q101 qualification matter.
FAQ
What is the clamping voltage of the 1.5SMC300A-E3/57T under maximum surge conditions?
The 1.5SMC300A-E3/57T has a maximum clamping voltage (VC) of 414 V at 3.6 A peak pulse current (IPPM) using the standardized 10/1000 μs waveform. This value is measured per Figure 1 in Vishay's 1.5SMC Series datasheet (Doc. #88303, Rev. 09-Mar-2026) and represents the worst-case voltage imposed on protected circuitry during a full-rated surge event. Designers must verify that downstream components tolerate this clamped level under worst-case trace inductance and layout parasitics.
Is the 1.5SMC300A-E3/57T suitable for automotive applications?
The 1.5SMC300A-E3/57T itself is a commercial-grade part (E3 suffix), but Vishay offers the AEC-Q101 qualified variant 1.5SMC300AHE3_B/H for automotive use. The 1.5SMC300A-E3/57T shares identical electrical characteristics and SMC package, yet lacks the extended reliability validation required for under-hood or safety-critical systems. For production automotive designs, specify the HE3 suffix version to ensure compliance with AEC-Q101 stress tests including temperature cycling, HTRB, and uHAST.
How does the thermal resistance of the 1.5SMC300A-E3/57T affect its surge handling capability?
The 1.5SMC300A-E3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads. This directly impacts repetitive surge capability: at ambient temperatures above 25 °C, the peak pulse power must be derated per Figure 2 in the datasheet. For example, at 75 °C ambient, the 1500 W rating drops to ~900 W. Single-event surges remain unaffected, but frequent transients require thermal modeling to avoid junction overheating beyond 150 °C.
What is the meaning of the "-E3/57T" suffix in 1.5SMC300A-E3/57T?
In 1.5SMC300A-E3/57T, "E3" denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads and halogen-free molding compound; "57T" specifies packaging in 7-inch diameter plastic tape and reel, with 850 units per reel. This ordering code aligns with Vishay's standard delivery format for SMT production lines and ensures compatibility with pick-and-place equipment calibrated for SMC (DO-214AB) footprint dimensions.
Does the 1.5SMC300A-E3/57T have polarity marking, and how is it oriented on the PCB?
Yes, the 1.5SMC300A-E3/57T is unidirectional and features a visible cathode band on one end of the SMC (DO-214AB) package. During PCB layout, the banded end must connect to the line being protected (e.g., 300 V rail), while the unmarked (anode) end connects to ground or reference potential. Reversing polarity renders the device non-functional for transient suppression, as it will not avalanche in reverse bias - a critical check during schematic and layout review for the 1.5SMC300A-E3/57T.
1.5SMC300A-E3/57T 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:
- Obsolete
- 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-E3/57T FAQ
1.How can I place an order for 1.5SMC300A-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC300A-E3/57T 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-E3/57T reliable?
The price and inventory of 1.5SMC300A-E3/57T 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-E3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC300A-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC300A-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC300A-E3/57T?
1.5SMC300A-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC300A-E3/57T 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-E3/57T?
For technical support, including 1.5SMC300A-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC300A-E3/57T requirements.
6.How does Aetrix verify that 1.5SMC300A-E3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC300A-E3/57T 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-E3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC300A-E3/57T?
All 1.5SMC300A-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC300A-E3/57T, 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-E3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC300A-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC300A-E3/57T Tags
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