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Vishay General Semiconductor - Diodes Division P6SMB300A-E3/52
- Part No.:
- P6SMB300A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB300A-E3/52.pdf
- Description:
- TVS DIODE 256VWM 414VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,221
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Product details
Overview
P6SMB300A-E3/52 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 clamping voltage (VC) at 1.45 A peak pulse current, and 600 W peak pulse power capability with a 10/1000 μs waveform. It is used to protect MOSFETs, ICs, and sensor interfaces against lightning-induced transients and inductive switching surges in industrial power supplies.
For engineers reviewing the P6SMB300A-E3/52 datasheet, P6SMB300A-E3/52 pinout, P6SMB300A-E3/52 application, or P6SMB300A-E3/52 equivalent, key selection criteria include its 300 V stand-off rating, 344 V clamping performance under 1.45 A IPPM, SMB (DO-214AA) package compatibility, unidirectional polarity with cathode band marking, and AEC-Q101 qualification eligibility via HE3/HM3 variants.
Technical Context
The P6SMB300A-E3/52 operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its 300 V stand-off level (VWM) and clamping transient energy at ≤344 V. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1 μA at VWM).
It delivers 600 W peak pulse power handling per 10/1000 μs waveform with 0.01% duty cycle, supported by low incremental surge resistance and <1 ns response time. Thermal design relies on RθJA = 100 °C/W and RθJL = 20 °C/W, requiring minimum 0.2" × 0.2" copper pads per terminal for rated derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 300 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR (Breakdown) | 285–315 V at 1 mA - Confirmed avalanche onset range under standardized test current |
| VC (Clamping) | 414 V at 1.45 A - Maximum voltage seen across device during 10/1000 μs surge, defining protected circuit stress |
| PPPM | 600 W - Peak transient power dissipation capability with defined waveform and duty cycle |
| ID (Leakage) | ≤1.0 μA at 300 V - Low reverse leakage preserves system efficiency and signal integrity in standby |
| Package | SMB (DO-214AA) - Surface-mount outline with 5.59 mm × 4.06 mm footprint, compatible with automated placement |
| Polarity | Unidirectional - Cathode identified by band; blocks forward conduction, clamps reverse transients |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case meeting UL 94 V-0 flammability rating; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path / surge return path | Connected to lower-potential side of protected line; carries surge current to ground during clamping |
| Cathode | Avalanche junction anode / clamping node | Marked with band; connected to higher-potential side (e.g., VBUS, signal line); defines VWM and VC reference |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) without thermal runaway |
| Glass passivated junction | Ensures stable VBR tolerance (±5%), low leakage drift over temperature, and long-term reliability |
| MSL Level 1 (260 °C) | Supports lead-free reflow assembly without popcorn cracking or delamination risk |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes overvoltage stress on downstream ICs compared to higher-ratio TVS devices |
| AEC-Q101 qualification option | HE3/HM3 suffix variants available for automotive powertrain and body electronics applications |
Applications
| Industrial Power Supply Input Protection | Automotive DC-DC Converter Output Clamping |
|---|---|
Use Scenario: Protecting 300 V-rated input stages of AC/DC front-ends and DC/DC converters against lightning surges and load dump transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input rail and chassis ground to clamp ESD and surge events above 300 V. Use Value: Limits transient voltage to ≤414 V, preventing damage to upstream rectifiers and downstream PWM controllers rated for 350–400 V max. |
Use Scenario: Safeguarding 12 V/24 V DC-DC converter outputs feeding ADAS sensors and infotainment modules. IC Role / Device Role / Timing Role: TVS mounted at converter output to suppress coupled transients from alternator load dump or relay switching noise. Use Value: With 300 V VWM, it avoids false triggering during normal operation while clamping fast 100 V+ spikes within safe limits for downstream 3.3 V/5 V regulators. |
| Telecom Line Interface Surge Protection | MOSFET Gate Driver Transient Suppression |
Use Scenario: Shielding RS-485/RS-232 transceivers and PoE injectors from induced surges on long cable runs. IC Role / Device Role / Timing Role: Placed across differential data lines or between line and ground to absorb common-mode transients. Use Value: 600 W rating handles multi-kV surges; low capacitance (<100 pF typical) preserves signal integrity up to 10 Mbps. |
Use Scenario: Preventing gate oxide rupture in high-side N-channel MOSFETs driven by isolated gate drivers in motor control inverters. IC Role / Device Role / Timing Role: Connected between gate and source to clamp Miller-induced voltage spikes during high dV/dt switching. Use Value: Fast <1 ns response captures sub-microsecond gate spikes; 300 V rating accommodates 200–250 V bus designs with margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ300A | Same VWM (300 V), but lower PPPM (400 W); SMA package (smaller footprint, higher RθJA) | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 compliance | Select only if board space is constrained and surge threat level is ≤Level 3 |
| SMCJ300A | Same VWM (300 V), higher PPPM (1500 W); larger SMC (DO-214AB) package | Requires more PCB area and higher thermal mass; better for repeated surge exposure | Choose when long-term reliability under frequent transients is critical and layout allows SMC footprint |
Compared with SMAJ300A and SMCJ300A, the P6SMB300A-E3/52 delivers optimal balance of 600 W surge capacity, SMB footprint compatibility, and cost-effective industrial-grade protection-making it ideal for space-constrained 300 V systems needing verified Level 4 immunity without over-engineering.
Availability
P6SMB300A-E3/52 is available at Aetrix Electronics and suitable for industrial power supplies, automotive DC-DC converters, telecom line interfaces, and MOSFET gate driver circuits requiring stable component supply and RoHS-compliant manufacturing.
Supply support for P6SMB300A-E3/52 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, precision, and high-power handling.
The P6SMB Series targets high-energy transient suppression in industrial, automotive, and telecom infrastructure, delivering standardized 600 W surge capability in compact SMB packages for scalable, drop-in ESD and surge protection.
FAQ
What is the maximum clamping voltage of the P6SMB300A-E3/52 under standard test conditions?
The P6SMB300A-E3/52 has a maximum clamping voltage (VC) of 414 V when subjected to its rated peak pulse current of 1.45 A using a 10/1000 μs waveform. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during transient events. The P6SMB300A-E3/52 maintains this clamping performance across its specified operating temperature range and is validated with 0.2" × 0.2" copper pad mounting per terminal.
Is the P6SMB300A-E3/52 suitable for automotive applications?
The base P6SMB300A-E3/52 is commercial-grade and RoHS-compliant, but not AEC-Q101 qualified. However, Vishay offers AEC-Q101-qualified versions under ordering codes such as P6SMB300AHM3_D/H (halogen-free, tape-and-reel) for automotive use. For functional equivalence in non-automotive contexts, the P6SMB300A-E3/52 remains valid-but always verify qualification status via the full part number before deployment in automotive ECUs or powertrain systems.
How does the P6SMB300A-E3/52 differ from bidirectional TVS diodes like P6SMB300CA?
The P6SMB300A-E3/52 is unidirectional and functions only in reverse-bias clamping mode, with polarity marked by a cathode band. In contrast, P6SMB300CA is bidirectional and clamps symmetrically in both polarities-making it suitable for AC lines or differential signals. The P6SMB300A-E3/52 offers lower leakage and tighter VBR tolerance than its bidirectional counterpart, but cannot replace P6SMB300CA in AC-coupled or floating applications without circuit redesign.
What is the thermal resistance specification for the P6SMB300A-E3/52?
The P6SMB300A-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead resistance (RθJL) of 20 °C/W, measured under standard JEDEC conditions with 0.2" × 0.2" copper pads. These values assume no additional heatsinking and define safe power derating above 25 °C ambient. For sustained 5.0 W dissipation, board-level thermal design must ensure adequate copper area and airflow to maintain TJ ≤ 150 °C.
Can the P6SMB300A-E3/52 be used in place of the older P6KE300A?
Yes-the P6SMB300A-E3/52 is a direct surface-mount replacement for the through-hole P6KE300A, sharing identical electrical ratings (VWM = 300 V, VC = 414 V, PPPM = 600 W) and avalanche characteristics. The P6SMB300A-E3/52 improves manufacturability with SMB packaging, automated placement compatibility, and MSL Level 1 reflow support-while maintaining equivalent surge protection performance in the same circuit locations.
P6SMB300A-E3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, 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):
- 1.45A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMB)
P6SMB300A-E3/52 FAQ
1.How can I place an order for P6SMB300A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB300A-E3/52 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 P6SMB300A-E3/52 reliable?
The price and inventory of P6SMB300A-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB300A-E3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB300A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB300A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB300A-E3/52?
P6SMB300A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB300A-E3/52 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 P6SMB300A-E3/52?
For technical support, including P6SMB300A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB300A-E3/52 requirements.
6.How does Aetrix verify that P6SMB300A-E3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB300A-E3/52 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 P6SMB300A-E3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB300A-E3/52?
All P6SMB300A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB300A-E3/52, 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 P6SMB300A-E3/52 part is unused and in its original packaging.
Return procedure for P6SMB300A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB300A-E3/52 Tags
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