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Vishay General Semiconductor - Diodes Division P6SMB400AHM3_A/I
- Part No.:
- P6SMB400AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB400AHM3_A/I.pdf
- Description:
- TVS DIODE 342VWM 548VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,464
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Product details
Overview
P6SMB400AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for high-energy surge protection on DC power rails and signal lines. It features a 400 V standoff voltage (VWM), 459 V minimum breakdown voltage (VBR), 548 V maximum clamping voltage (VC) at 1.1 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - deployed in industrial motor drives and telecom power supplies.
For engineers reviewing the P6SMB400AHM3_A/I datasheet, P6SMB400AHM3_A/I pinout, P6SMB400AHM3_A/I application, or P6SMB400AHM3_A/I equivalent, this part delivers verified AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, SMB (DO-214AA) package compatibility, and precise clamping performance for overvoltage transients induced by inductive switching or lightning surges.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, optimized for fast response (<1 ns) to transient overvoltages while maintaining low incremental surge resistance. Its glass-passivated junction ensures stable leakage and robust surge handling under repetitive 0.01% duty cycle conditions.
The device is rated for 150 °C maximum junction temperature, 100 A non-repetitive forward surge current (IFSM), and exhibits a +0.110 %/°C temperature coefficient of VBR, enabling predictable voltage shift across automotive and industrial thermal ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 342 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 400 V nominal systems. |
| VBR (Breakdown, min) | 380 V - Guaranteed minimum breakdown voltage at 1 mA test current; ensures reliable triggering above system operating voltage. |
| VC (Clamping, max) | 548 V - Maximum voltage seen across the device during 1.1 A 10/1000 μs surge; determines protected circuit's peak stress level. |
| PPPM | 600 W - Peak pulse power dissipation capability with standard 10/1000 μs waveform; supports IEC 61000-4-5 Level 4 surge immunity. |
| IPPM | 1.10 A - Peak pulse current corresponding to VC = 548 V; used to size upstream fusing and PCB trace width. |
| TJ max | 150 °C - Maximum junction temperature; enables operation in under-hood automotive or enclosed industrial enclosures without derating. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs thermal layout requirements for sustained surge duty. |
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 surge current to ground when VWM exceeded - must route with low-inductance path to chassis or power ground. |
| Anode (unbanded end) | Reference node | Typically tied to system ground or low-impedance return; establishes clamping reference point and defines unidirectional polarity. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability (vibration, temperature cycling, HTRB); suitable for engine control, ADAS power rails. |
| Glass passivated junction | Ensures stable leakage current (<1 μA at VWM) and long-term parameter stability under humidity and thermal stress. |
| 600 W 10/1000 μs rating | Meets IEC 61000-4-5 surge immunity up to 4 kV (line-earth) in properly designed circuits with appropriate series impedance. |
| Low profile SMB package | 0.220" × 0.130" footprint enables dense PCB layouts; compatible with automated pick-and-place and reflow soldering (J-STD-020). |
| Halogen-free & RoHS | Complies with EU Directive 2011/65/EU and JEDEC J-STD-20; eliminates brominated flame retardants for safer end-of-life processing. |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
Use Scenario: Protection of 380–400 V DC bus against inductive kickback from IGBT gate drivers and contactor switching. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed across DC link capacitor terminals. Use Value: Limits transient overshoot to ≤548 V, preventing overvoltage failure of downstream DC-DC converters and microcontrollers. |
Use Scenario: Input-stage surge suppression on -48 V or +48 V telecom rectifier outputs exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side distribution rails feeding base station RF modules. Use Value: Clamps 10/1000 μs surges to safe levels within 1 ns, preserving integrity of sensitive GaN FETs and digital signal processors. |
| Automotive Body Control Modules | Renewable Energy Inverters |
Use Scenario: Protection of LIN/CAN power rails and sensor supply lines in BCMs subjected to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Secondary-level TVS on 12 V auxiliary rails powering door lock actuators and ambient light sensors. Use Value: Withstands 100 A surge (IFSM) and maintains <1 μA leakage at 342 V, ensuring low quiescent current and long battery life. |
Use Scenario: DC-link overvoltage suppression in solar string inverters where PV array transients couple into MPPT stage. IC Role / Device Role / Timing Role: Standoff-rated TVS on 600–800 V DC bus, coordinated with MOVs for staged energy absorption. Use Value: Provides precise 342 V clamping threshold and 548 V max clamping, enabling tighter voltage margins than Zener-based solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ400A | Same VWM (342 V), identical SMB package, but rated for 600 W with lower VC (530 V) and higher IPPM (1.13 A); no AEC-Q101 qualification. | Preferred for commercial/industrial designs where automotive qualification is not required and tighter clamping is critical. | Select SMBJ400A if AEC-Q101 is unnecessary and 18 V lower clamping voltage improves system margin. |
| 1.5SMC400A | Same electrical specs (VWM, VBR, VC, PPPM), but larger SMC (DO-214AB) package (0.285" × 0.185"); higher RθJA (75 °C/W) due to larger thermal mass. | Better suited for high-temperature environments requiring enhanced thermal dissipation, but requires PCB redesign. | Choose 1.5SMC400A only when board space allows larger footprint and thermal performance outweighs density constraints. |
Compared with SMBJ400A and 1.5SMC400A, P6SMB400AHM3_A/I uniquely combines AEC-Q101 qualification, halogen-free construction, and SMB footprint - making it the optimal choice for space-constrained automotive and industrial designs requiring certified reliability without layout change.
Availability
P6SMB400AHM3_A/I is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, automotive body control modules, and renewable energy inverters requiring stable component supply with full traceability and lifecycle support.
Supply support for P6SMB400AHM3_A/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where high surge immunity, AEC-Q101 compliance, and compact packaging are mandatory.
FAQ
What is the maximum clamping voltage of P6SMB400AHM3_A/I at its rated peak pulse current?
The maximum clamping voltage (VC) of P6SMB400AHM3_A/I is 548 V at 1.10 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is guaranteed per Vishay's datasheet revision 09-Jan-2024 (Document Number: 88370) and defines the upper voltage limit imposed on protected circuitry during surge events. Designers must ensure downstream components tolerate this clamping level.
Is P6SMB400AHM3_A/I qualified for automotive applications?
Yes, P6SMB400AHM3_A/I is AEC-Q101 qualified, as confirmed by the "HM3" suffix and documentation in the Vishay P6SMB datasheet. The HM3 designation indicates halogen-free, RoHS-compliant construction with full AEC-Q101 stress testing - including temperature cycling, high-temperature reverse bias, and mechanical shock - making it suitable for under-hood and body electronics in passenger vehicles and commercial fleets.
What does the "_A/I" suffix mean in P6SMB400AHM3_A/I?
The "_A/I" suffix in P6SMB400AHM3_A/I specifies packaging and reel configuration: "A" denotes the standard SMB (DO-214AA) package variant, and "I" indicates 13-inch diameter plastic tape-and-reel delivery with 3200 units per reel. This matches Vishay's ordering code convention shown in Table 3 of Document Number 88370, confirming full compatibility with high-speed SMT assembly lines.
How does the thermal resistance of P6SMB400AHM3_A/I affect PCB layout?
P6SMB400AHM3_A/I 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. To maintain safe junction temperatures during repetitive surges, designers must provide adequate copper area and avoid thermal isolation - especially critical in enclosed enclosures or high-ambient-temperature environments like automotive engine bays.
Can P6SMB400AHM3_A/I be used in bidirectional configurations?
No, P6SMB400AHM3_A/I is a unidirectional TVS diode, as indicated by the "A" suffix (not "CA") and absence of bidirectional VWM/VBR ratings in its datasheet entry. Its cathode band marks the surge-current sink terminal, and it conducts only in reverse breakdown. For bidirectional protection, a part like P6SMB400CA would be required - which P6SMB400AHM3_A/I does not substitute.
P6SMB400AHM3_A/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:
- Discontinued at Digi-Key
- 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_A/I FAQ
1.How can I place an order for P6SMB400AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB400AHM3_A/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_A/I reliable?
The price and inventory of P6SMB400AHM3_A/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_A/I is usually 5 days.
3.What payment methods are accepted for P6SMB400AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB400AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB400AHM3_A/I?
P6SMB400AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB400AHM3_A/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_A/I?
For technical support, including P6SMB400AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB400AHM3_A/I requirements.
6.How does Aetrix verify that P6SMB400AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB400AHM3_A/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_A/I meets industry standards.
7.What is the process for return or replacement of P6SMB400AHM3_A/I?
All P6SMB400AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB400AHM3_A/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_A/I part is unused and in its original packaging.
Return procedure for P6SMB400AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB400AHM3_A/I Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
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D5V0H1B2LP-7B
Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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