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Vishay General Semiconductor - Diodes Division P6SMB400AHE3_A/H
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- Part No.:
- P6SMB400AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB400AHE3_A/H.pdf
- Description:
- TVS DIODE 342VWM 548VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,388
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Product details
Overview
P6SMB400AHE3_A/H 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 minimum breakdown voltage (VBR), and 548 V maximum clamping voltage (VC) at 1.10 A peak pulse current (IPPM), designed to protect power rails and signal lines in high-voltage industrial power supplies and motor drive circuits.
For engineers reviewing the P6SMB400AHE3_A/H datasheet, P6SMB400AHE3_A/H pinout, P6SMB400AHE3_A/H application, or P6SMB400AHE3_A/H equivalent, key selection criteria include its 600 W peak pulse power rating (10/1000 μs), AEC-Q101 qualification status (HE3 suffix), RoHS-compliant matte tin plating, and low thermal resistance (RθJL = 20 °C/W) for reliable surge handling in automotive-grade power systems.
Technical Context
The P6SMB400AHE3_A/H operates as a unidirectional avalanche diode with cathode-band polarity marking, leveraging glass-passivated junction technology for stable reverse breakdown and fast response (<1 ns) to transient overvoltages. Its 10/1000 μs waveform rating reflects standardized surge immunity testing per REA definitions.
Thermal performance is defined by RθJA = 100 °C/W (on 0.2" × 0.2" copper pads) and RθJL = 20 °C/W, enabling effective heat transfer to PCB traces or heatsinks. The device is rated for TJ = -65 °C to +150 °C operation and meets J-STD-020 MSL Level 1 reflow profile (260 °C peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 342 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (Breakdown) | 380–420 V at IT = 1.0 mA - Confirmed avalanche initiation range under standardized test current |
| VC (Clamping) | 548 V at IPPM = 1.10 A - Peak voltage seen across protected circuit during 10/1000 μs surge |
| PPPM | 600 W - Surge energy absorption capability under standard 10/1000 μs waveform, 0.01% duty cycle |
| IFSM | 100 A - Single half-sine surge current tolerance (8.3 ms), critical for inductive turn-off protection |
| TJ max. | +150 °C - Maximum junction temperature defining safe derating envelope above 25 °C ambient |
| RθJL | 20 °C/W - Low junction-to-lead thermal resistance enabling efficient conduction cooling via PCB copper |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; cathode indicated by band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal (unidirectional) | Connected to lower-potential side of protected line; conducts during forward surge or ESD events |
| Cathode | Avalanche clamping terminal (unidirectional) | Connected to higher-potential rail; initiates controlled breakdown when reverse voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) in industrial AC inputs |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive powertrain and body electronics requiring extended temperature and reliability compliance |
| Glass passivated junction | Ensures stable VBR over lifetime and improved moisture resistance vs. epoxy-passivated alternatives |
| MSL Level 1 (260 °C peak) | Supports single-reflow assembly without preconditioning, reducing manufacturing complexity |
| RoHS-compliant, halogen-free option available | Meets EU Directive 2011/65/EU and IPC-1752A material declaration requirements |
Applications
| Industrial Power Supply Input Protection | Automotive DC-DC Converter Output Clamping |
|---|---|
|
Use Scenario: Protecting 400 V DC bus inputs in switch-mode power supplies against lightning-induced surges and load dump transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed across input terminals to clamp overvoltage before it reaches rectifier bridge or controller IC. Use Value: Limits transient voltage to ≤548 V, preventing damage to 600 V-rated MOSFETs and electrolytic capacitors downstream. |
Use Scenario: Safeguarding 12 V/24 V output rails of high-voltage automotive DC-DC converters during battery voltage spikes. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected between output and ground to absorb coupled transients from HV side switching noise. Use Value: Maintains output regulation integrity during 100 V/100 ns transients per ISO 7637-2 Pulse 5a, preserving MCU and sensor functionality. |
| Motor Drive Gate Driver Protection | High-Voltage Sensor Signal Line Guarding |
|
Use Scenario: Shielding isolated gate drivers in 3-phase inverters from Miller-induced dv/dt coupling and shoot-through transients. IC Role / Device Role / Timing Role: TVS placed across driver output and reference to suppress >1 kV/ns edge-induced overshoot on gate nodes. Use Value: Prevents false turn-on of SiC/GaN FETs by clamping gate-source voltage to <±20 V, ensuring timing fidelity. |
Use Scenario: Protecting analog outputs of high-side current sensors measuring 400 V bus currents in EV traction inverters. IC Role / Device Role / Timing Role: Bidirectional-capable variant not used; this unidirectional part guards sensor supply rail against reverse polarity faults and ESD. Use Value: Blocks reverse leakage below 342 V while clamping positive surges to 548 V, preserving 16-bit ADC accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ400A-E3/52 | Same VWM/VBR/VC ratings; non-AEC-Q101, commercial-grade E3 suffix only | Lacks automotive qualification; suitable for industrial/commercial designs without AEC compliance needs | Select when cost sensitivity outweighs automotive qualification requirement and lifecycle assurance is less critical |
| P6SMB400AHM3_D/H | Identical electrical specs; HM3 suffix denotes halogen-free, RoHS-compliant, AEC-Q101 qualified version | Same automotive use cases but with stricter material content compliance (halogen-free molding compound) | Choose when halogen-free specification is mandated by OEM Tier 1 or environmental policy (e.g., VW 80101) |
Compared with P6SMB400AHE3_A/H, SMBJ400A-E3/52 offers identical surge protection performance without AEC-Q101 validation, while P6SMB400AHM3_D/H delivers identical qualification plus halogen-free construction-enabling direct substitution where material compliance drives sourcing decisions.
Availability
P6SMB400AHE3_A/H is available at Aetrix Electronics and suitable for industrial power supplies, automotive DC-DC converters, and motor drive gate driver circuits requiring stable component supply with guaranteed AEC-Q101 qualification and traceable lot history.
Supply support for P6SMB400AHE3_A/H 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, precision, and high-power handling.
The P6SMB Series targets high-energy transient suppression in space-constrained surface-mount applications, with design focus on industrial automation, automotive electrification, and renewable energy systems demanding robust surge immunity.
FAQ
What is the clamping voltage of P6SMB400AHE3_A/H at its rated peak pulse current?
The P6SMB400AHE3_A/H has a maximum clamping voltage (VC) of 548 V at 1.10 A peak pulse current (IPPM), measured under the standard 10/1000 μs waveform. This value defines the upper voltage limit imposed on protected circuitry during surge events and is confirmed in the Vishay datasheet Document Number 88370, page 2.
Is P6SMB400AHE3_A/H AEC-Q101 qualified?
Yes, P6SMB400AHE3_A/H is AEC-Q101 qualified, as indicated by the "HE3" suffix in its ordering code. This qualification covers stress testing for temperature cycling, humidity bias, mechanical shock, and high-temperature operating life-validating suitability for automotive power electronics applications.
What does the "_A/H" suffix mean in P6SMB400AHE3_A/H?
In P6SMB400AHE3_A/H, "A" denotes unidirectional polarity, "H" specifies 7-inch plastic tape-and-reel packaging (750 units per reel), and "HE3" confirms RoHS-compliant, AEC-Q101 qualified construction. The full suffix distinguishes it from commercial (E3), halogen-free (HM3), or alternate reel size (I) variants.
Can P6SMB400AHE3_A/H be used in bidirectional protection circuits?
No, P6SMB400AHE3_A/H is strictly unidirectional, as confirmed by its "A" suffix and cathode-band marking. For bidirectional protection, Vishay specifies CA-suffix parts (e.g., P6SMB400CA); using P6SMB400AHE3_A/H in reverse-biased configurations risks permanent failure due to lack of symmetrical breakdown capability.
What is the thermal resistance from junction to lead (RθJL) for P6SMB400AHE3_A/H?
The P6SMB400AHE3_A/H has a typical junction-to-lead thermal resistance (RθJL) of 20 °C/W, per Vishay's datasheet Document Number 88370, page 3. This low value enables efficient heat conduction from the silicon die through the leads into PCB copper, supporting sustained power dissipation in compact layouts.
P6SMB400AHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Tape & Box (TB)
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
P6SMB400AHE3_A/H FAQ
1.How can I place an order for P6SMB400AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB400AHE3_A/H 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 P6SMB400AHE3_A/H reliable?
The price and inventory of P6SMB400AHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB400AHE3_A/H is usually 5 days.
3.What payment methods are accepted for P6SMB400AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB400AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB400AHE3_A/H?
P6SMB400AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB400AHE3_A/H 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 P6SMB400AHE3_A/H?
For technical support, including P6SMB400AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB400AHE3_A/H requirements.
6.How does Aetrix verify that P6SMB400AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB400AHE3_A/H 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 P6SMB400AHE3_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB400AHE3_A/H?
All P6SMB400AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB400AHE3_A/H, 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 P6SMB400AHE3_A/H part is unused and in its original packaging.
Return procedure for P6SMB400AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB400AHE3_A/H Tags
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