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Vishay General Semiconductor - Diodes Division P6SMB400AHM3_D/I
- Part No.:
- P6SMB400AHM3_D/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB400AHM3_D/I.pdf
- Description:
- 600W,400V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,268
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Product details
Overview
P6SMB400AHM3_D/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for high-voltage transient protection in power rails and DC bus lines. It features a 400 V standoff voltage (VWM), 459 V minimum breakdown voltage (VBR), 548 V maximum clamping voltage (VC) at 1.10 A peak pulse current, and 600 W peak pulse power capability with a 10/1000 μs waveform - suitable for protecting industrial motor drives and telecom power supplies against lightning-induced surges.
For engineers reviewing the P6SMB400AHM3_D/I datasheet, P6SMB400AHM3_D/I pinout, P6SMB400AHM3_D/I application, or P6SMB400AHM3_D/I equivalent, key selection considerations include its AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, SMB (DO-214AA) package thermal performance (RθJA = 100 °C/W), and unidirectional polarity with cathode band marking.
Technical Context
This TVS diode operates as a voltage-clamping device in parallel with protected circuitry, conducting only when reverse voltage exceeds VBR to shunt surge energy to ground. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM), while the low incremental surge resistance enables effective clamping under high-current transients.
The device is rated for repetitive 10/1000 μs pulses at 0.01% duty cycle and supports operating junction temperatures from –65 °C to +150 °C. Mounting on 0.2" × 0.2" copper pads per terminal is required to achieve specified thermal and power dissipation performance (PD = 5.0 W at TA = 50 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 342 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 380–420 V at IT = 1.0 mA - Confirmed voltage range where device transitions from high-impedance to low-impedance conduction. |
| VC (Clamping Voltage) | 548 V at IPPM = 1.10 A - Peak voltage seen across protected circuit during worst-case 10/1000 μs surge; determines stress on downstream components. |
| PPPM (Peak Pulse Power) | 600 W - Surge energy-handling capacity under standardized 10/1000 μs waveform; validates suitability for IEC 61000-4-5 Level 4 testing. |
| TJ max. | +150 °C - Maximum junction temperature; enables reliable operation in high-ambient environments like industrial enclosures or outdoor telecom cabinets. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient; requires PCB copper pad design per datasheet (0.2" × 0.2") to maintain power derating integrity. |
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 molded band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to lower-potential side of protected line (e.g., GND or return path) | Enables unidirectional clamping only during reverse overvoltage events; must be tied to system ground or reference plane. |
| Cathode | Current exit point in forward bias; marked by band; connected to higher-potential side (e.g., DC bus or signal line) | Defines polarity-sensitive placement - reversal prevents clamping function and risks catastrophic failure under surge. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - supports use in EV charging infrastructure and ADAS power modules. |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for industrial and consumer electronics without compromising surge robustness or thermal stability. |
| 600 W peak pulse power (10/1000 μs) | Provides proven immunity against lightning-induced surges per IEC 61000-4-5, enabling single-device protection for 400 V DC systems. |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes voltage overshoot during clamping - critical for safeguarding MOSFETs and gate drivers rated ≤ 600 V in motor control inverters. |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT assembly processes without moisture sensitivity concerns or pre-bake requirements. |
Applications
| Industrial Motor Drives | Telecom DC Power Distribution |
|---|---|
Use Scenario: Protection of IGBT gate driver supply rails and DC link capacitors against switching transients and lightning surges in variable-frequency drives. IC Role / Device Role / Timing Role: Unidirectional voltage clamp placed across 400 V DC bus to limit transient overvoltage before it reaches power semiconductors. Use Value: Prevents destructive overvoltage on 600 V-class IGBTs by clamping to 548 V, maintaining safe SOA margins during 600 W surge events. |
Use Scenario: Surge suppression on -48 V or +48 V telecom rectifier outputs feeding base station RF amplifiers and backhaul interfaces. IC Role / Device Role / Timing Role: Standoff-rated TVS deployed at power entry points to absorb IEC 61000-4-5 combination wave surges without affecting steady-state regulation. Use Value: Enables compliance with GR-1089-CORE Level 4 immunity requirements using a single discrete component with verified 600 W pulse rating. |
| EV Charging Station DC Link | Renewable Energy Inverter Input |
Use Scenario: Protection of onboard charger input stage and DC fast-charging interface against grid-side transients and load dump events. IC Role / Device Role / Timing Role: High-VWM TVS placed across 400 V nominal DC bus to suppress 10/1000 μs surges up to 1.10 A peak current. Use Value: Maintains AEC-Q101 qualification and halogen-free construction while delivering 548 V clamping - compatible with ISO 16750-2 load dump test profiles. |
Use Scenario: Transient suppression on PV string combiner box inputs exposed to induced surges from nearby lightning strikes. IC Role / Device Role / Timing Role: Unidirectional clamping device mounted directly at inverter DC input terminals to divert surge current away from MPPT controller and isolation stage. Use Value: Withstands 150 °C junction temperature and provides 342 V standoff - matches typical 600 V PV string open-circuit voltages while ensuring long-term reliability. |
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-E3/5B | Same VWM (342 V), but lower PPPM (400 W); SMA package (DO-214AC), higher RθJA (140 °C/W) | Limited to lower-energy surge environments; not AEC-Q101 qualified; unsuitable for automotive or high-reliability industrial use | Select only if cost or footprint constraints outweigh need for 600 W rating and automotive qualification. |
| 1.5SMC400AHE3_A/H | Same VWM and PPPM, but SMC (DO-214AB) package; larger footprint; no HM3 halogen-free designation | Requires more PCB area; lacks halogen-free certification; same thermal performance (RθJA = 100 °C/W) but no AEC-Q101 validation | Choose when legacy SMC layout exists and halogen-free compliance is not mandated by end-customer specifications. |
Compared with SMAJ400A-E3/5B and 1.5SMC400AHE3_A/H, P6SMB400AHM3_D/I delivers identical electrical protection performance in a smaller SMB footprint, with verified AEC-Q101 qualification and halogen-free construction - making it the preferred choice for space-constrained, high-reliability 400 V DC systems.
Availability
P6SMB400AHM3_D/I is available at Aetrix Electronics and suitable for industrial motor drives, telecom DC power distribution, and EV charging station designs requiring stable component supply, automotive-grade reliability, and halogen-free compliance.
Supply support for P6SMB400AHM3_D/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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets high-energy transient suppression in demanding environments, with design focus on automotive, industrial, and telecom power systems requiring robust, AEC-Q101-qualified TVS solutions in compact SMB packages.
FAQ
What is the clamping voltage of the P6SMB400AHM3_D/I under a 10/1000 μs surge?
The P6SMB400AHM3_D/I has a maximum clamping voltage (VC) of 548 V at a peak pulse current (IPPM) of 1.10 A with a 10/1000 μs waveform. This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring compatibility with 600 V-rated power semiconductors downstream.
Is the P6SMB400AHM3_D/I suitable for automotive applications?
Yes, the P6SMB400AHM3_D/I is AEC-Q101 qualified (indicated by the HM3 suffix), meaning it has passed rigorous stress tests including temperature cycling, high-temperature reverse bias, and ESD. This makes P6SMB400AHM3_D/I appropriate for use in EV charging infrastructure, battery management systems, and other automotive-grade power protection circuits.
What does the "D" in P6SMB400AHM3_D/I signify?
The "D" in P6SMB400AHM3_D/I denotes AEC-Q101 qualification for the high-voltage variant range (P6SMB250A to P6SMB540A). Combined with "HM3", it confirms halogen-free, RoHS-compliant construction and automotive-grade reliability - distinguishing it from commercial-grade variants like M3 or E3 suffixes.
How does the SMB package of the P6SMB400AHM3_D/I compare thermally to larger packages like SMC?
The SMB (DO-214AA) package of the P6SMB400AHM3_D/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads - matching the thermal performance of the larger SMC package. This allows P6SMB400AHM3_D/I to deliver full 600 W pulse power in a 30% smaller footprint than SMC, without thermal derating penalties.
Can the P6SMB400AHM3_D/I be used in bidirectional configurations?
No, the P6SMB400AHM3_D/I is a unidirectional TVS diode, as confirmed by its part number suffix "A" and cathode band marking. Bidirectional variants use the "CA" suffix (e.g., P6SMB400CA). Using P6SMB400AHM3_D/I in bidirectional applications would result in forward conduction during negative transients and potential device failure.
P6SMB400AHM3_D/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:
- Active
- 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:
- Telecom
- 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_D/I FAQ
1.How can I place an order for P6SMB400AHM3_D/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB400AHM3_D/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_D/I reliable?
The price and inventory of P6SMB400AHM3_D/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_D/I is usually 5 days.
3.What payment methods are accepted for P6SMB400AHM3_D/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB400AHM3_D/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB400AHM3_D/I?
P6SMB400AHM3_D/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB400AHM3_D/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_D/I?
For technical support, including P6SMB400AHM3_D/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB400AHM3_D/I requirements.
6.How does Aetrix verify that P6SMB400AHM3_D/I is sourced from the original manufacturer or authorized distributors?
All P6SMB400AHM3_D/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_D/I meets industry standards.
7.What is the process for return or replacement of P6SMB400AHM3_D/I?
All P6SMB400AHM3_D/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB400AHM3_D/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_D/I part is unused and in its original packaging.
Return procedure for P6SMB400AHM3_D/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB400AHM3_D/I Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
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Diodes Incorporated
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Diodes Incorporated
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