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Vishay General Semiconductor - Diodes Division P6SMB400AHM3_C/H
- Part No.:
- P6SMB400AHM3_C/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB400AHM3_C/H.pdf
- Description:
- TVS DIODE 342VWM 548VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,750
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Product details
Overview
P6SMB400AHM3_C/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), 459 V minimum breakdown voltage (VBR), and 600 W peak pulse power (10/1000 μs). It provides robust overvoltage protection for high-voltage DC rails in industrial power supplies and telecom rectifier stages.
For engineers reviewing the P6SMB400AHM3_C/H datasheet, P6SMB400AHM3_C/H pinout, P6SMB400AHM3_C/H application, or P6SMB400AHM3_C/H equivalent, key selection criteria include clamping voltage at rated surge current, thermal resistance (RθJA = 100 °C/W), AEC-Q101 qualification status, and halogen-free RoHS compliance per HM3 suffix.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, designed to shunt transient energy above its breakdown threshold while maintaining low leakage (<1.0 μA at VWM) and fast response time. Its glass-passivated junction ensures stable performance under repetitive surge conditions.
The device sustains 100 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine) and operates across -65 °C to +150 °C junction temperature range. Thermal design must account for RθJL = 20 °C/W (junction-to-lead) and derating above TA = 25 °C per Fig. 2 of the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 400 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR (Breakdown min) | 459 V - Minimum voltage at which device enters avalanche conduction at 1 mA test current |
| VC (Clamping @ IPPM) | 548 V - Maximum voltage seen across terminals during 1.10 A peak pulse current (10/1000 μs) |
| PPPM | 600 W - Peak transient power handling capability under standardized 10/1000 μs waveform |
| ID (Leakage @ VWM) | 1.0 μA - Reverse leakage current at full rated standoff voltage, critical for low-power standby circuits |
| TJ max | +150 °C - Maximum allowable junction temperature; requires thermal pad layout per DO-214AA spec |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, MSL Level 1 (260 °C peak reflow). Cathode indicated by band; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts avalanche current to ground during overvoltage event |
| Anode (unbanded end) | Reference node | Typically tied to system ground or low-impedance return path; defines clamping reference point |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables protection against IEC 61000-4-5 Level 4 surges (4 kV line-earth) in high-voltage DC systems |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance |
| Glass passivated junction | Ensures stable VBR tolerance and low parameter drift over lifetime and temperature extremes |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., inductive switch-off) |
| Matte tin-plated leads | Guarantees solderability per J-STD-002 and whisker resistance per JESD 201 Class 2 |
Applications
| Industrial Power Supply Input Protection | Telecom Rectifier Stage Clamping |
|---|---|
Use Scenario: Protects AC/DC front-end rectifiers and bulk capacitors from lightning-induced surges on 380–480 VAC-derived DC bus lines. IC Role / Device Role / Timing Role: Unidirectional TVS placed across DC output after bridge rectifier to clamp positive-going transients. Use Value: Limits transient voltage to ≤548 V, preventing damage to downstream MOSFETs and PWM controllers rated for 600 V max. |
Use Scenario: Shields telecom base station power modules from load-dump and inductive kickback in -48 V DC distribution networks. IC Role / Device Role / Timing Role: Mounted directly across rectifier output to suppress >1 kV spikes generated by relay switching or cable disconnect events. Use Value: Withstands 100 A surge (8.3 ms) without degradation, ensuring long-term reliability in field-deployed infrastructure. |
| High-Voltage Motor Drive DC Link | Renewable Energy Inverter DC Bus |
Use Scenario: Safeguards IGBT gate drivers and bus capacitors in 400–690 V AC motor drives exposed to regenerative braking transients. IC Role / Device Role / Timing Role: Connected between DC+ and DC− rails to clamp bidirectional voltage spikes caused by rapid IGBT turn-off. Use Value: Low RθJL (20 °C/W) enables effective heat transfer to PCB copper, supporting repeated surge duty cycles. |
Use Scenario: Used in solar string inverters to protect MPPT controllers and isolation transformers from grid-switching transients. IC Role / Device Role / Timing Role: Placed at DC input stage to absorb 600 W surges from PV array open-circuit events or grid fault coupling. Use Value: Halogen-free HM3 construction meets environmental requirements for outdoor-rated renewable energy equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ400AHE3_A/H | Same VWM (400 V), same SMB package, but E3 suffix (non-AEC-Q101, non-halogen-free) | Lacks automotive qualification and halogen-free certification; suitable for commercial industrial use only | Select when AEC-Q101 and halogen-free compliance are not required; lower cost alternative |
| P6SMB400A-M3/52 | Identical electrical specs, same VWM/VBR/VC, but M3 suffix (halogen-free, RoHS, non-AEC-Q101) | No automotive qualification; same footprint and thermal behavior, but not validated for automotive stress profiles | Choose for halogen-free compliance without automotive validation; compatible PCB layout |
Compared with P6SMB400AHM3_C/H, SMBJ400AHE3_A/H omits AEC-Q101 and halogen-free compliance, while P6SMB400A-M3/52 retains halogen-free status but lacks automotive qualification-making P6SMB400AHM3_C/H the only option meeting both requirements simultaneously.
Availability
P6SMB400AHM3_C/H is available at Aetrix Electronics and suitable for industrial power supplies, telecom rectifier modules, and renewable energy inverters requiring stable component supply with automotive-grade reliability and halogen-free compliance.
Supply support for P6SMB400AHM3_C/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, rectifiers, and protection devices with emphasis on ruggedness, precision, and reliability.
The P6SMB Series targets high-energy transient suppression in demanding environments, with design focus on industrial automation, telecom infrastructure, and automotive power systems where surge immunity and long-term stability are critical.
FAQ
What is the clamping voltage of P6SMB400AHM3_C/H at its rated peak pulse current?
The P6SMB400AHM3_C/H has a maximum clamping voltage (VC) of 548 V at its rated peak pulse current (IPPM) of 1.10 A under the standard 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet and defines the upper voltage limit imposed on protected circuitry during surge events. Engineers must verify that downstream components have sufficient voltage margin above this clamping level.
Is P6SMB400AHM3_C/H qualified to AEC-Q101, and what does the HM3 suffix indicate?
Yes, P6SMB400AHM3_C/H is AEC-Q101 qualified, as confirmed by the "HM3" suffix per Vishay's ordering nomenclature guide. The HM3 designation indicates halogen-free, RoHS-compliant construction plus full AEC-Q101 stress testing-including temperature cycling, high-temperature reverse bias (HTRB), and surge endurance. This makes P6SMB400AHM3_C/H suitable for automotive power modules and other mission-critical applications.
Can P6SMB400AHM3_C/H be used in bidirectional protection circuits?
No, P6SMB400AHM3_C/H is a unidirectional TVS diode, as indicated by the "A" suffix (not "CA") and absence of bidirectional VBR/VWM ranges in its specification row. Bidirectional variants like P6SMB400CA require symmetrical clamping in both polarities and are marked differently. Using P6SMB400AHM3_C/H in bidirectional applications risks failure during negative transients due to lack of reverse avalanche capability.
What is the thermal resistance and recommended PCB layout for P6SMB400AHM3_C/H?
P6SMB400AHM3_C/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the Vishay datasheet. To achieve this rating, designers must follow the DO-214AA mounting pad layout shown on page 5, including minimum pad widths and spacing. Insufficient copper area will cause excessive junction temperature rise during repetitive surges.
How does the leakage current of P6SMB400AHM3_C/H affect low-power standby circuits?
P6SMB400AHM3_C/H exhibits a maximum reverse leakage current (ID) of 1.0 μA at its full 400 V standoff voltage (VWM), measured at 25 °C. This ultra-low leakage ensures minimal power loss in always-on monitoring circuits or battery-backed systems, where even nanoamp-level currents impact battery life. At elevated temperatures, leakage increases predictably per datasheet curves, so thermal design remains essential for sustained low-power operation.
P6SMB400AHM3_C/H 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB400AHM3_C/H FAQ
1.How can I place an order for P6SMB400AHM3_C/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB400AHM3_C/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 P6SMB400AHM3_C/H reliable?
The price and inventory of P6SMB400AHM3_C/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB400AHM3_C/H is usually 5 days.
3.What payment methods are accepted for P6SMB400AHM3_C/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB400AHM3_C/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB400AHM3_C/H?
P6SMB400AHM3_C/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB400AHM3_C/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 P6SMB400AHM3_C/H?
For technical support, including P6SMB400AHM3_C/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB400AHM3_C/H requirements.
6.How does Aetrix verify that P6SMB400AHM3_C/H is sourced from the original manufacturer or authorized distributors?
All P6SMB400AHM3_C/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 P6SMB400AHM3_C/H meets industry standards.
7.What is the process for return or replacement of P6SMB400AHM3_C/H?
All P6SMB400AHM3_C/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB400AHM3_C/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 P6SMB400AHM3_C/H part is unused and in its original packaging.
Return procedure for P6SMB400AHM3_C/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB400AHM3_C/H Tags
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