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Vishay General Semiconductor - Diodes Division P6SMB400A-E3/52
- Part No.:
- P6SMB400A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB400A-E3/52.pdf
- Description:
- TVS DIODE 342VWM 548VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,796
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Product details
Overview
P6SMB400A-E3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 400 V standoff voltage (VWM), 420 V maximum breakdown voltage (VBR), and 548 V clamping voltage (VC) at 1.10 A peak pulse current (IPPM) under 10/1000 μs waveform. It delivers 600 W peak pulse power for protecting MOSFETs, ICs, and sensor signal lines against inductive switching transients in industrial and telecom power supplies.
For engineers reviewing the P6SMB400A-E3/52 datasheet, P6SMB400A-E3/52 pinout, P6SMB400A-E3/52 application, or P6SMB400A-E3/52 equivalent, key selection criteria include its 400 V stand-off rating, low 1.10 A IPPM threshold for precise overvoltage triggering, unidirectional polarity with cathode band marking, RoHS-compliant matte tin plating, and MSL Level 1 reflow compatibility up to 260 °C.
Technical Context
The P6SMB400A-E3/52 operates as a silicon avalanche diode, leveraging glass-passivated junction technology for stable reverse-biased clamping behavior. Its 100 °C/W junction-to-ambient thermal resistance requires PCB copper pad thermal management per recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) layout to sustain repetitive 600 W pulses at 0.01% duty cycle.
Designed for transient suppression in DC power rails and high-voltage signal paths, it exhibits 0.110 %/°C temperature coefficient of VBR and maintains ≤1.0 μA reverse leakage at VWM - critical for minimizing standby power loss in 400 V systems such as telecom rectifiers and industrial motor drives.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 400 V - Maximum continuous reverse voltage before clamping begins; defines operating margin below system max voltage. |
| VBR (Breakdown) | 380–420 V at 1.0 mA - Confirmed avalanche initiation range; ensures reliable turn-on within ±5% tolerance. |
| VC (Clamping) | 548 V at IPPM = 1.10 A - Peak voltage seen by protected circuit during 10/1000 μs surge; limits stress on downstream 600 V-rated components. |
| PPPM | 600 W - Sustains single 10/1000 μs transients without degradation; validated per Fig. 1 derating curve. |
| ID (Leakage) | ≤1.0 μA at VWM - Negligible standby current draw in high-impedance 400 V bias networks. |
| TJ max | +150 °C - Enables operation in enclosed industrial enclosures with ambient up to +105 °C when thermally managed. |
| Package | SMB (DO-214AA) - Surface-mount footprint compatible with automated placement; 0.220" × 0.130" body size. |
Pinout & Package
SMB (DO-214AA) package with matte tin-plated leads; cathode indicated by band on one end. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal per datasheet Fig. 6 layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or low-potential rail; establishes reference for clamping action. |
| Cathode | High-side transient input | Connected to protected line (e.g., 400 V DC bus); avalanche conduction occurs from cathode to anode during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR over lifetime and humidity exposure; eliminates risk of junction corrosion in industrial environments. |
| 600 W peak pulse power (10/1000 μs) | Handles IEC 61000-4-5 Level 4 surges (4 kV) on 400 V lines without failure when properly heatsinked. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without preconditioning; eliminates moisture-related popcorning. |
| RoHS-compliant, halogen-free option available | E3 suffix confirms compliance with EU RoHS Directive 2011/65/EU and JEDEC J-STD-020 Class 2 whisker resistance. |
| Unidirectional polarity with cathode band | Enables DC rail protection with polarity-aware placement; prevents accidental reverse-bias damage during assembly. |
Applications
| Telecom Rectifier Output Protection | Industrial PLC Power Input Stage |
|---|---|
Use Scenario: 400 V DC output of telecom rectifier modules exposed to lightning-induced surges on AC input side coupling through transformer parasitics. IC Role / Device Role / Timing Role: Unidirectional TVS placed across DC output to clamp transients before they reach downstream DC-DC converters and monitoring ICs. Use Value: 548 V clamping voltage ensures protected 600 V-rated MOSFETs remain within safe SOA; 1.0 μA leakage avoids loading precision voltage references. |
Use Scenario: 380–420 V DC link in programmable logic controller power supply subjected to inductive kickback from solenoid drivers. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main DC bus, absorbing energy from 100 A+ IFSM-rated relay coils. Use Value: 600 W PPPM rating sustains repeated 10/1000 μs events without parameter drift; SMB footprint allows dense layout near bus terminals. |
| High-Voltage Sensor Signal Conditioning | EV Charging Station DC Link Monitoring |
Use Scenario: Isolated voltage divider feeding 400 V battery sensing circuitry in battery management systems, vulnerable to ESD and fast transients. IC Role / Device Role / Timing Role: Secondary-level TVS on signal path between divider and ADC input, limiting voltage to <550 V during fault conditions. Use Value: 380–420 V VBR range matches 400 V nominal bus, enabling precise clamping onset without false triggering during normal ripple. |
Use Scenario: DC link monitoring node in 400 V EV charging station where voltage spikes occur during contactor make/break and grid harmonics. IC Role / Device Role / Timing Role: Standoff-rated TVS across measurement shunt or isolation amplifier inputs to prevent latch-up or destruction. Use Value: 0.110 %/°C VBR tempco ensures stable clamping threshold across -40 °C to +125 °C operating range; RoHS/E3 compliance meets automotive sourcing requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ400A | Same 400 V VWM, but SMA package (smaller footprint, higher RθJA = 140 °C/W); lower 400 W PPPM rating. | Preferred for space-constrained boards where thermal budget allows reduced pulse handling. | Select SMAJ400A only if board area is critical and surge duty cycle remains <0.005%; verify thermal relief pads for 400 W derating. |
| 1.5SMC400A | Same electrical specs but larger SMC (DO-214AB) package; RθJA = 70 °C/W; 1.5 kW PPPM capability. | Suitable for high-reliability industrial systems requiring margin beyond 600 W or extended thermal endurance. | Choose 1.5SMC400A when PCB layout permits larger footprint and system demands >1000 W surge headroom or improved long-term thermal cycling life. |
Compared with SMAJ400A, P6SMB400A-E3/52 offers 50% higher peak pulse power and better thermal dissipation in SMB form factor; versus 1.5SMC400A, it trades 2.5× package area for verified compatibility with high-density automated assembly lines and tighter IPC Class 3 spacing rules.
Availability
P6SMB400A-E3/52 is available at Aetrix Electronics and suitable for telecom rectifiers, industrial PLC power inputs, high-voltage sensor conditioning, and EV charging station DC link monitoring requiring stable component supply with full traceability and RoHS compliance.
Supply support for P6SMB400A-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The P6SMB Series targets high-energy transient suppression in industrial, telecom, and automotive power systems, delivering standardized 600 W surge capability across 6.8 V to 540 V ratings in compact SMB packaging.
FAQ
What is the maximum clamping voltage of the P6SMB400A-E3/52 under standard test conditions?
The P6SMB400A-E3/52 has a maximum clamping voltage (VC) of 548 V when subjected to a 10/1000 μs waveform at 1.10 A peak pulse current (IPPM), as specified in the Vishay datasheet Document Number 88370. This value defines the upper voltage limit imposed on protected circuitry during transient events and is measured with the device mounted on 0.2" × 0.2" copper pads per JEDEC standards.
Is the P6SMB400A-E3/52 suitable for automotive applications?
The P6SMB400A-E3/52 itself is commercial-grade and not AEC-Q101 qualified; however, Vishay offers the automotive variant P6SMB400AHM3_D/I with identical electrical specs and halogen-free RoHS compliance. For automotive use, specify the HM3_D suffix - the P6SMB400A-E3/52 must be validated separately per OEM requirements and does not carry AEC-Q101 certification.
What is the thermal resistance of the P6SMB400A-E3/52, and how does it affect PCB layout?
The P6SMB400A-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain reliability during repetitive 600 W pulses, PCB layout must allocate adequate copper area and avoid thermal bottlenecks - insufficient copper increases junction temperature and accelerates parameter drift or failure.
Does the P6SMB400A-E3/52 have bidirectional capability?
No, the P6SMB400A-E3/52 is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. Bidirectional variants use the "CA" suffix (e.g., P6SMB400CA). Using P6SMB400A-E3/52 on AC-coupled or bipolar signal lines would result in forward conduction during negative half-cycles and potential damage.
What is the reverse leakage current specification for the P6SMB400A-E3/52 at its rated standoff voltage?
The P6SMB400A-E3/52 exhibits a maximum reverse leakage current (ID) of 1.0 μA at its rated standoff voltage (VWM) of 400 V, measured at TA = 25 °C. This low leakage ensures minimal power loss in high-impedance 400 V bias networks and avoids interference with precision voltage monitoring circuits downstream.
P6SMB400A-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):
- 342V
- Voltage - Breakdown (Min):
- 380V
- Voltage - Clamping (Max) @ Ipp:
- 548V
- Current - Peak Pulse (10/1000µs):
- 1.1A
- 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)
P6SMB400A-E3/52 FAQ
1.How can I place an order for P6SMB400A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB400A-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 P6SMB400A-E3/52 reliable?
The price and inventory of P6SMB400A-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 P6SMB400A-E3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB400A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB400A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB400A-E3/52?
P6SMB400A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB400A-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 P6SMB400A-E3/52?
For technical support, including P6SMB400A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB400A-E3/52 requirements.
6.How does Aetrix verify that P6SMB400A-E3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB400A-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 P6SMB400A-E3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB400A-E3/52?
All P6SMB400A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB400A-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 P6SMB400A-E3/52 part is unused and in its original packaging.
Return procedure for P6SMB400A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB400A-E3/52 Tags
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