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Vishay General Semiconductor - Diodes Division P6SMB440A-M3/52
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- Part No.:
- P6SMB440A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB440A-M3/52.pdf
- Description:
- TVS DIODE 376VWM 602VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,108
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Product details
Overview
P6SMB440A-M3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 440 V standoff voltage (VWM), 462 V maximum 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 P6SMB440A-M3/52 datasheet, P6SMB440A-M3/52 pinout, P6SMB440A-M3/52 application, or P6SMB440A-M3/52 equivalent, key selection criteria include clamping voltage under surge (602 V at 1 A), low leakage (<1.0 µA at 376 V), halogen-free RoHS compliance (M3 suffix), and AEC-Q101 qualification readiness via D-suffix variants.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, optimized for transient suppression on positive-rail DC systems. Its glass-passivated junction ensures stable breakdown behavior and low incremental surge resistance across repetitive 10/1000 µs pulses at 0.01% duty cycle.
Thermal performance is defined by RθJA = 100 °C/W (on 0.2" × 0.2" copper pads) and TJ(max) = +150 °C, supporting operation in enclosed industrial enclosures without forced airflow. The device meets J-STD-020 MSL Level 1 and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 376 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe DC rail margin for 400–440 V systems. |
| VBR (Breakdown Voltage) | 418–462 V at 1 mA - Tight 10% tolerance band ensures predictable turn-on during transients; measured per ANSI/IEEE C62.35. |
| VC (Clamping Voltage) | 602 V at IPPM = 1 A - Limits peak voltage seen by downstream MOSFETs or controllers during surge events. |
| IPPM (Peak Pulse Current) | 1.0 A (10/1000 µs) - Sustains single-event surges up to 1 A without degradation; derated above 25 °C per Fig. 2. |
| PPPM (Peak Pulse Power) | 600 W - Delivers standardized energy absorption capability compliant with IEC 61000-4-5 Level 4 testing. |
| ID (Reverse Leakage) | <1.0 µA at VWM - Negligible standby power loss in high-impedance sensing or control circuits. |
| Package | SMB (DO-214AA) - Low-profile SMD footprint (4.57 mm × 3.94 mm × 2.20 mm) compatible with automated pick-and-place and reflow. |
Pinout & Package
SMB (DO-214AA) surface-mount package with matte tin-plated leads, 0.2" × 0.2" copper pad recommendation per terminal, and cathode band marking for unidirectional polarity identification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction; tied to system ground or low-side reference in clamp configuration. | Connects to return path; must be routed with low-inductance trace to maintain clamping speed. |
| Cathode | Current exit point during reverse-biased clamping; connected to protected line (e.g., +400 V rail). | Band-marked terminal; placement adjacent to protected IC or MOSFET minimizes inductive overshoot. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables compliance with IEC 61000-4-5 surge immunity requirements for industrial equipment. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets EU Directive 2015/863 and IPC-1752A material declarations for green manufacturing. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking-reduces production overhead. |
| 150 °C maximum junction temperature | Supports operation in sealed power converters with ambient temperatures up to +105 °C. |
| Glass passivated chip junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity stress. |
Applications
| Industrial DC Power Supply Protection | Telecom Rectifier Module Clamping |
|---|---|
Use Scenario: Protecting 400 V DC output stages of switched-mode power supplies against lightning-induced surges and inductive switching spikes. IC Role / Device Role / Timing Role: Unidirectional TVS placed between +400 V rail and chassis ground to clamp transients within 1 ns. Use Value: Limits voltage excursion to ≤602 V, preventing gate oxide rupture in downstream SiC MOSFETs rated at 650 V. |
Use Scenario: Safeguarding telecom rectifier modules (e.g., -48 V to +400 V hybrid systems) from AC line coupling and load dump events. IC Role / Device Role / Timing Role: Standoff-rated clamping element on high-side DC bus, coordinated with upstream MOVs for staged protection. Use Value: Provides precise 376 V hold-off with sub-µA leakage, avoiding false triggering during normal regulation. |
| High-Voltage Sensor Interface Protection | EV Charging Station DC Link Monitoring |
Use Scenario: Shielding isolated voltage dividers and ADC front-ends measuring 300–500 V DC bus voltages in motor drives. IC Role / Device Role / Timing Role: First-line transient suppressor before precision resistive divider network. Use Value: Prevents latch-up in isolated amplifiers (e.g., AMC1301) by limiting input overvoltage to 602 V. |
Use Scenario: Protecting DC link voltage monitors in 1000 V-class EV charging stations during grid fault recovery. IC Role / Device Role / Timing Role: Parallel-connected TVS on main DC+ bus, coordinated with active crowbar circuitry. Use Value: Absorbs 600 W surge energy without thermal runaway, maintaining measurement integrity during ISO 17987-2 compliance tests. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ440A-T | Same VWM/VBR range and SMB package, but rated for 600 W with 1.5× higher IPPM (1.5 A) and higher VC (648 V). | Higher clamping voltage reduces margin for 650 V devices; better suited for lower-energy, higher-current transients. | Select when surge current exceeds 1 A but clamping voltage margin allows ≥648 V. |
| 1.5SMC440A | Same electrical specs but in larger SMC (DO-214AB) package (7.11 mm × 6.22 mm); 1.5× higher thermal mass and RθJA = 60 °C/W. | Requires PCB area increase; preferred where board space permits and thermal derating below 100 °C/W is critical. | Choose for high-reliability industrial designs needing extended surge endurance and lower junction temperature rise. |
Compared with SMBJ440A-T and 1.5SMC440A, P6SMB440A-M3/52 offers optimal balance of compact SMB footprint, halogen-free compliance, and verified 600 W clamping performance-ideal for space-constrained, high-voltage DC protection where layout density and environmental compliance are prioritized.
Availability
P6SMB440A-M3/52 is available at Aetrix Electronics and suitable for industrial power supplies, telecom rectifier modules, and EV charging station DC link monitoring requiring stable component supply, halogen-free compliance, and AEC-Q101-ready qualification path.
Supply support for P6SMB440A-M3/52 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 and automotive-grade validation.
The P6SMB Series targets high-voltage transient suppression in industrial, telecom, and transportation systems, designed to replace older SMA/SMB families with enhanced surge robustness and tighter parametric control.
FAQ
What is the maximum clamping voltage of P6SMB440A-M3/52 under full-rated surge current?
The P6SMB440A-M3/52 clamps to a maximum of 602 V when subjected to its rated 1.0 A peak pulse current (10/1000 µs waveform), as specified in the Electrical Characteristics table on page 2 of Vishay document 88370. This value is measured at TA = 25 °C with recommended 0.2" × 0.2" copper pads and defines the upper voltage limit imposed on protected circuitry during surge events. The P6SMB440A-M3/52 maintains this clamping performance across its full operating temperature range with appropriate derating.
Is P6SMB440A-M3/52 suitable for automotive applications?
P6SMB440A-M3/52 itself is not AEC-Q101 qualified; however, the P6SMB440AHM3_D/H variant (with D-suffix) is explicitly qualified per AEC-Q101 and listed in the Ordering Information table on page 3. The P6SMB440A-M3/52 shares identical electrical and thermal specifications but lacks the automotive qualification documentation and screening. For automotive use, specify P6SMB440AHM3_D/H or P6SMB440AHM3_D/I to ensure compliance. The P6SMB440A-M3/52 remains suitable for industrial and telecom applications requiring halogen-free RoHS compliance.
What does the "M3" suffix indicate in P6SMB440A-M3/52?
The "M3" suffix in P6SMB440A-M3/52 denotes halogen-free, RoHS-compliant construction per EU Directive 2015/863 and Vishay's material categorization standard (document 99912). It confirms the molding compound contains no brominated flame retardants or chlorine-based additives, and the matte tin-plated leads meet J-STD-002 solderability and JESD201 Class 2 whisker resistance requirements. This distinguishes it from the "E3" suffix (RoHS-compliant but not halogen-free) and supports green manufacturing initiatives. The P6SMB440A-M3/52 is fully compatible with lead-free reflow profiles.
How does the thermal resistance of P6SMB440A-M3/52 affect PCB layout?
P6SMB440A-M3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads per terminal, as defined in the Thermal Characteristics table. To avoid exceeding the 150 °C maximum junction temperature, PCB layout must allocate sufficient copper area-minimum 5.0 mm × 5.0 mm per pad-and avoid thermal isolation. Reducing pad size or using thinner copper increases RθJA, risking premature thermal shutdown during repetitive surges. The P6SMB440A-M3/52 benefits from internal thermal design that leverages the SMB package's low-mass structure for fast transient response without compromising steady-state dissipation.
Can P6SMB440A-M3/52 be used in bidirectional configurations?
No-P6SMB440A-M3/52 is a unidirectional TVS diode, indicated by the "A" suffix (not "CA"). Bidirectional variants use the "CA" suffix (e.g., P6SMB440CA) and exhibit symmetrical clamping in both polarities. The P6SMB440A-M3/52 features a cathode band marking and conducts only in forward bias; applying reverse voltage beyond VWM triggers clamping, while forward voltage > ~1.2 V causes conduction. Using P6SMB440A-M3/52 in AC or bipolar signal paths would result in unintended conduction or failure. For bidirectional protection, select P6SMB440CA-M3/52 or equivalent.
P6SMB440A-M3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
P6SMB440A-M3/52 FAQ
1.How can I place an order for P6SMB440A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB440A-M3/52 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 P6SMB440A-M3/52 reliable?
The price and inventory of P6SMB440A-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB440A-M3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB440A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB440A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB440A-M3/52?
P6SMB440A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB440A-M3/52 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 P6SMB440A-M3/52?
For technical support, including P6SMB440A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB440A-M3/52 requirements.
6.How does Aetrix verify that P6SMB440A-M3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB440A-M3/52 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 P6SMB440A-M3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB440A-M3/52?
All P6SMB440A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB440A-M3/52, 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 P6SMB440A-M3/52 part is unused and in its original packaging.
Return procedure for P6SMB440A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB440A-M3/52 Tags
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