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Vishay General Semiconductor - Diodes Division P6SMB440AHM3_A/I
- Part No.:
- P6SMB440AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB440AHM3_A/I.pdf
- Description:
- TVS DIODE 376VWM 602VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,405
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Product details
Overview
P6SMB440AHM3_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 power and signal lines. It features a 440 V standoff voltage (VWM), 462 V maximum breakdown voltage (VBR), 600 W peak pulse power rating (10/1000 μs), and clamps transients to ≤602 V at 1.0 A IPPM - deployed in industrial power supplies and automotive ECUs.
For engineers reviewing the P6SMB440AHM3_A/I datasheet, P6SMB440AHM3_A/I pinout, P6SMB440AHM3_A/I application, or P6SMB440AHM3_A/I equivalent, key selection criteria include unidirectional polarity, SMB (DO-214AA) package compatibility, AEC-Q101 qualification status, and clamping performance under repetitive 10/1000 μs surges up to 0.01% duty cycle.
Technical Context
This TVS diode operates as a voltage-clamping device that enters avalanche conduction when reverse voltage exceeds its breakdown threshold (VBR = 418–462 V). Its low incremental surge resistance ensures minimal voltage overshoot during transient events, while the glass-passivated junction delivers stable leakage (<1.0 μA at VWM) and fast response time (<1.0 ns).
The device is rated for 150 °C maximum junction temperature and derates linearly above 25 °C ambient per Fig. 2 of the datasheet. Thermal resistance is RθJA = 100 °C/W (typical) and RθJL = 20 °C/W (typical), supporting reliable operation on standard 0.2" × 0.2" copper pads without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 376 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC/AC working margin. |
| VBR (Breakdown Voltage) | 418–462 V at IT = 1.0 mA - Voltage at which avalanche conduction begins; determines minimum clamping trigger point. |
| VC (Clamping Voltage) | ≤602 V at IPPM = 1.0 A (10/1000 μs) - Peak voltage seen by protected circuit during surge; critical for downstream IC survivability. |
| PPPM (Peak Pulse Power) | 600 W - Maximum transient energy absorption capability with 10/1000 μs waveform; enables robust lightning/surge immunity. |
| ID (Reverse Leakage) | ≤1.0 μA at VWM = 376 V - Ultra-low leakage preserves system efficiency and prevents false triggering in high-impedance nodes. |
| TJ max. | 150 °C - Maximum junction temperature; supports operation in under-hood automotive and industrial environments. |
| Package | SMB (DO-214AA) - Surface-mount outline with 0.220" × 0.130" footprint; compatible with automated pick-and-place and reflow soldering. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case meeting UL 94 V-0 flammability rating. Matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102. Polarity indicated by cathode band (unidirectional only).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection | Connected to ground or lower-potential rail; completes conduction path during reverse-biased avalanche event. |
| Cathode | High-side connection | Connected to protected line (e.g., 48 V bus); blocks normal operation but conducts during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics per stress test requirements. |
| 600 W peak pulse power (10/1000 μs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-to-earth) without degradation when properly mounted. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage across temperature and humidity cycling; reduces parameter drift. |
| MSL Level 1 (J-STD-020) | Zero moisture sensitivity; allows unlimited floor life and standard reflow profiles up to 260 °C peak. |
| Halogen-free & RoHS-compliant | Meets environmental compliance for global industrial and automotive supply chains; no brominated flame retardants. |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module (BCM) |
|---|---|
|
Use Scenario: Protects 48 V input rails in programmable logic controller (PLC) power stages against load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input rail and chassis ground to clamp transients before they reach DC/DC controllers and gate drivers. Use Value: Limits voltage excursion to ≤602 V during 10/1000 μs surges, preventing latch-up or permanent damage to 65 V-rated MOSFETs and PMICs. |
Use Scenario: Shields LIN bus transceivers and microcontroller I/O pins in BCMs from battery reverse connection and jump-start surges. IC Role / Device Role / Timing Role: Standoff-rated TVS on 12 V supply line upstream of LDO regulators, absorbing >100 A surge currents without failure. Use Value: Maintains <1.0 μA leakage at 376 V, ensuring minimal quiescent current draw in always-on vehicle modules. |
| Telecom Base Station DC Feeds | Renewable Energy Inverter DC Link |
|
Use Scenario: Guards remote radio head (RRH) power inputs against induced lightning surges on outdoor cable runs. IC Role / Device Role / Timing Role: Primary surge suppression stage before secondary filtering and regulation; coordinated with MOVs for multi-stage protection. Use Value: Fast <1 ns response time captures initial surge edge before slower components activate, reducing let-through energy by >30%. |
Use Scenario: Safeguards IGBT gate drivers and sensing circuits in solar string inverters exposed to grid-switching transients. IC Role / Device Role / Timing Role: Clamping device on auxiliary 24 V control rail, placed adjacent to isolated gate driver ICs to prevent false turn-on. Use Value: 150 °C TJ max and RθJL = 20 °C/W enable sustained operation near heat-generating power stages without thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ440A-E3/5B | Same VWM/VBR range (376/418–462 V), but lower PPPM (400 W) and higher ID (5.0 μA); SMA package (smaller footprint, lower thermal mass). | Limited to lower-energy surges; unsuitable for IEC 61000-4-5 Level 4 without parallel staging. | Select when board space is constrained and surge threat level is Class 2 or lower. |
| 1.5SMC440AHE3_A | Same electrical specs but SMC (DO-214AB) package - larger footprint (0.285" × 0.185"), higher RθJA (70 °C/W), and 1500 W PPPM rating. | Better thermal handling for high-repetition surges; requires larger PCB pad area and different stencil design. | Choose for high-duty-cycle industrial environments where thermal margin outweighs size constraints. |
Compared with P6SMB440AHM3_A/I, SMAJ440A-E3/5B trades peak power and leakage performance for compactness, while 1.5SMC440AHE3_A provides superior thermal and surge-handling capability at the cost of board area - making P6SMB440AHM3_A/I the balanced choice for AEC-Q101-compliant SMB-layout designs requiring 600 W clamping.
Availability
P6SMB440AHM3_A/I is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, telecom infrastructure, and renewable energy inverters requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB440AHM3_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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, automotive qualification, and high-volume manufacturability.
The P6SMB Series targets high-energy transient suppression in space-constrained applications, combining AEC-Q101 qualification, halogen-free construction, and standardized SMB packaging for seamless integration into automotive and industrial platforms.
FAQ
What is the maximum clamping voltage of the P6SMB440AHM3_A/I under a 10/1000 μs surge?
The P6SMB440AHM3_A/I clamps to a maximum of 602 V when subjected to a 1.0 A peak pulse current with a 10/1000 μs waveform. This value is measured per Figure 1 and Table on page 2 of the Vishay datasheet 88370 (Rev. 09-Jan-2024) and defines the upper voltage limit imposed on protected circuitry during standardized surge events.
Is the P6SMB440AHM3_A/I AEC-Q101 qualified?
Yes, the P6SMB440AHM3_A/I is AEC-Q101 qualified. The "HM3" suffix denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification, and the "_D" variant designation (per page 3 of datasheet 88370) confirms qualification for P6SMB250A through P6SMB540A, including P6SMB440AHM3_A/I.
What does the "A/I" suffix mean in P6SMB440AHM3_A/I?
The "A/I" suffix in P6SMB440AHM3_A/I indicates packaging: "A" specifies the SMB (DO-214AA) case style, and "I" denotes 13-inch diameter plastic tape-and-reel delivery with 3200 units per reel (see Ordering Information table, page 3 of datasheet 88370). It does not denote electrical variant or revision code.
Can the P6SMB440AHM3_A/I be used in bidirectional configurations?
No, the P6SMB440AHM3_A/I is unidirectional only. Bidirectional variants in the P6SMB series use the "CA" suffix (e.g., P6SMB440CA). The "A" suffix and presence of a cathode band confirm unidirectional polarity; using it in reverse-biased AC applications would result in forward conduction and failure.
What is the thermal resistance from junction to ambient for the P6SMB440AHM3_A/I?
The typical thermal resistance from junction to ambient (RθJA) for the P6SMB440AHM3_A/I is 100 °C/W, measured on a 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad per JEDEC standards. This value assumes standard PCB layout and natural convection; actual performance depends on board copper area and airflow.
P6SMB440AHM3_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):
- 376V
- Voltage - Breakdown (Min):
- 418V
- Voltage - Clamping (Max) @ Ipp:
- 602V
- Current - Peak Pulse (10/1000µs):
- 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)
P6SMB440AHM3_A/I FAQ
1.How can I place an order for P6SMB440AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB440AHM3_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 P6SMB440AHM3_A/I reliable?
The price and inventory of P6SMB440AHM3_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 P6SMB440AHM3_A/I is usually 5 days.
3.What payment methods are accepted for P6SMB440AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB440AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB440AHM3_A/I?
P6SMB440AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB440AHM3_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 P6SMB440AHM3_A/I?
For technical support, including P6SMB440AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB440AHM3_A/I requirements.
6.How does Aetrix verify that P6SMB440AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB440AHM3_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 P6SMB440AHM3_A/I meets industry standards.
7.What is the process for return or replacement of P6SMB440AHM3_A/I?
All P6SMB440AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB440AHM3_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 P6SMB440AHM3_A/I part is unused and in its original packaging.
Return procedure for P6SMB440AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB440AHM3_A/I Tags
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