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Vishay General Semiconductor - Diodes Division P6SMB400AHM3_C/I
- Part No.:
- P6SMB400AHM3_C/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB400AHM3_C/I.pdf
- Description:
- TVS DIODE 342VWM 548VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P6SMB400AHM3_C/I 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 modules.
For engineers reviewing the P6SMB400AHM3_C/I datasheet, P6SMB400AHM3_C/I pinout, P6SMB400AHM3_C/I application, or P6SMB400AHM3_C/I equivalent, key selection criteria include clamping voltage (548 V at IPPM), low leakage (<1.0 μA at 342 V), AEC-Q101 qualification status, halogen-free RoHS compliance, and thermal resistance (RθJA = 100 °C/W).
Technical Context
The P6SMB400AHM3_C/I uses a glass-passivated silicon junction to achieve fast response time (<1.0 ns) and stable clamping under repetitive 10/1000 μs transients. Its unidirectional polarity enables integration into DC-biased lines without reverse conduction concerns.
Designed for surface-mount assembly on 0.2" × 0.2" copper pads, it delivers 600 W surge capability with 0.01% duty cycle and derates linearly above 25 °C ambient per Fig. 2. Junction temperature is rated from –65 °C to +150 °C, supporting operation in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 342 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 400 V systems. |
| VBR (Breakdown Voltage) | 380–420 V at 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 548 V at IPPM - Peak voltage seen by protected circuit during 600 W transient; critical for downstream IC/MOSFET survival. |
| IPPM (Peak Pulse Current) | 1.10 A - Maximum surge current supported under 10/1000 μs waveform; determines survivability against IEC 61000-4-5 Level 4 surges. |
| ID (Reverse Leakage) | <1.0 μA at 342 V - Ultra-low leakage preserves efficiency in high-impedance sensing or bias networks. |
| TJ max | +150 °C - Enables use in enclosed power converters and automotive under-hood applications with elevated ambient temperatures. |
| RθJA | 100 °C/W - Thermal resistance indicates need for adequate PCB copper area (0.2" × 0.2" pads specified) to maintain reliability at full power. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, AEC-Q101 qualified. 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 surge current to ground when V > VBR; must be routed with low-inductance path. |
| Anode (unbanded end) | Reference node | Typically tied to system ground or low-impedance return; establishes reference for clamping action in unidirectional configuration. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity in telecom and industrial power inputs without external series impedance. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, HAST, and mechanical shock-suitable for EV charging infrastructure. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage under humidity and thermal stress; eliminates risk of metallization corrosion. |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT reflow profiles without preconditioning; eliminates moisture-related popcorning failure. |
| Halogen-free & RoHS-compliant | Fulfills EU Directive 2011/65/EU and IPC-1752A material declarations; supports green manufacturing and end-of-life recycling. |
Applications
| Industrial Power Supply Protection | Telecom Rectifier Module Clamping |
|---|---|
Use Scenario: Protecting 380–400 VDC output stages of AC/DC front-end converters against lightning-induced surges and load dump transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed across bulk capacitor terminals to clamp overshoot during fault conditions. Use Value: Limits transient voltage to ≤548 V, preventing damage to downstream SiC MOSFETs and gate drivers rated for 650 V. |
Use Scenario: Safeguarding -48 V telecom rectifier outputs against cross-talk coupling and switching noise from adjacent modules. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing coupled energy from neighboring hot-swap events or relay bounce. Use Value: Sub-μA leakage avoids loading sensitive voltage regulation feedback loops while maintaining 342 V operational margin. |
| EV Charging Station DC Link | High-Voltage Sensor Interface Protection |
Use Scenario: Shielding DC link monitoring circuits in 400 V battery chargers from inductive kickback during contactor opening. IC Role / Device Role / Timing Role: Fast-clamping TVS placed at sensor input to suppress sub-microsecond transients before signal conditioning. Use Value: <1 ns response time prevents latch-up in isolated amplifiers; 150 °C rating sustains operation near heat-generating IGBT stacks. |
Use Scenario: Guarding precision voltage dividers and isolation amplifiers measuring 400 V bus voltage in motor drives. IC Role / Device Role / Timing Role: High-VWM TVS shunting transient energy away from high-impedance divider nodes. Use Value: 342 V standoff allows direct connection to 400 V rail without resistive attenuation; 100 °C/W RθJA enables thermal-aware layout on dense control boards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ400A-E3/52 | Same VWM/VBR/VC specs but non-AEC-Q101, standard RoHS (E3), MSL Level 1, RθJA = 110 °C/W. | Lacks automotive qualification; suitable for commercial/industrial use where AEC-Q101 is not mandated. | Select SMAJ400A-E3/52 when cost sensitivity outweighs automotive reliability requirements and thermal margin permits higher RθJA. |
| 1.5SMC400AHE3_A/H | Same electrical specs, AEC-Q101 qualified, but larger SMC (DO-214AB) package (2.5 mm height vs. SMB's 2.2 mm), RθJA = 85 °C/W. | Higher power dissipation capability due to larger thermal mass; requires more PCB area and different footprint. | Choose 1.5SMC400AHE3_A/H when board space allows and lower thermal resistance is needed for sustained surge duty cycles. |
Compared with P6SMB400AHM3_C/I, SMAJ400A-E3/52 offers identical clamping performance at lower cost but no automotive qualification, while 1.5SMC400AHE3_A/H improves thermal handling at the expense of footprint size-making P6SMB400AHM3_C/I optimal for space-constrained AEC-Q101 designs requiring SMB compatibility.
Availability
P6SMB400AHM3_C/I is available at Aetrix Electronics and suitable for industrial power supplies, telecom rectifier modules, EV charging station DC links, and high-voltage sensor interfaces requiring stable component supply and long-term lifecycle support.
Supply support for P6SMB400AHM3_C/I 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets high-energy transient suppression in compact surface-mount formats, designed specifically for automotive, industrial, and telecom systems demanding AEC-Q101 qualification and robust 600 W surge handling in SMB footprint.
FAQ
What is the maximum clamping voltage of the P6SMB400AHM3_C/I under a 600 W transient?
The P6SMB400AHM3_C/I has a maximum clamping voltage (VC) of 548 V when subjected to its rated 600 W peak pulse power with a 10/1000 μs waveform. This value is measured at the specified peak pulse current (IPPM = 1.10 A) and defines the upper voltage limit imposed on protected circuitry during surge events. The P6SMB400AHM3_C/I maintains this clamping performance across its qualified operating temperature range.
Is the P6SMB400AHM3_C/I qualified for automotive applications?
Yes, the P6SMB400AHM3_C/I is AEC-Q101 qualified, as confirmed by the "HM3" suffix and documentation in Vishay's P6SMB datasheet (Rev. 09-Jan-2024, Doc. #88370). This qualification covers stress tests including temperature cycling, highly accelerated stress testing (HAST), and mechanical shock-validating its suitability for automotive power electronics such as onboard chargers and DC-DC converters. The P6SMB400AHM3_C/I meets these requirements in its SMB package.
What does the "C/I" suffix indicate in P6SMB400AHM3_C/I?
The "C/I" suffix in P6SMB400AHM3_C/I denotes packaging configuration: "C" specifies tape-and-reel delivery on 13-inch diameter reels, and "I" indicates the reel contains 3200 units. This format aligns with Vishay's ordering code structure for the HM3 variant (halogen-free, RoHS-compliant, AEC-Q101 qualified). The P6SMB400AHM3_C/I is therefore supplied in high-volume, automated-assembly-ready packaging optimized for SMT production lines.
How does the thermal resistance of the P6SMB400AHM3_C/I affect PCB layout?
The P6SMB400AHM3_C/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W, which requires adherence to Vishay's recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad layout per terminal to achieve rated power dissipation. Deviating from this pad size increases thermal impedance, risking junction overheating during repetitive surges. Proper layout ensures the P6SMB400AHM3_C/I remains within its 150 °C maximum junction temperature under real-world duty cycles.
Can the P6SMB400AHM3_C/I be used in bidirectional configurations?
No, the P6SMB400AHM3_C/I is a unidirectional TVS diode, as indicated by its "A" suffix (e.g., P6SMB400A) and absence of "CA" designation. Bidirectional variants use the "CA" suffix (e.g., P6SMB400CA) and exhibit symmetrical clamping in both polarities. Using the unidirectional P6SMB400AHM3_C/I in AC or bipolar signal paths would result in forward conduction during negative half-cycles, potentially causing failure. Always verify polarity marking (cathode band) when placing the P6SMB400AHM3_C/I.
P6SMB400AHM3_C/I 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/I FAQ
1.How can I place an order for P6SMB400AHM3_C/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB400AHM3_C/I 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/I reliable?
The price and inventory of P6SMB400AHM3_C/I 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/I is usually 5 days.
3.What payment methods are accepted for P6SMB400AHM3_C/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB400AHM3_C/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB400AHM3_C/I?
P6SMB400AHM3_C/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB400AHM3_C/I 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/I?
For technical support, including P6SMB400AHM3_C/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB400AHM3_C/I requirements.
6.How does Aetrix verify that P6SMB400AHM3_C/I is sourced from the original manufacturer or authorized distributors?
All P6SMB400AHM3_C/I 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/I meets industry standards.
7.What is the process for return or replacement of P6SMB400AHM3_C/I?
All P6SMB400AHM3_C/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB400AHM3_C/I, 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/I part is unused and in its original packaging.
Return procedure for P6SMB400AHM3_C/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB400AHM3_C/I Tags
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