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Vishay General Semiconductor - Diodes Division P6SMB440A-E3/52
- Part No.:
- P6SMB440A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB440A-E3/52.pdf
- Description:
- TVS DIODE 376VWM 602VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,169
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Product details
Overview
P6SMB440A-E3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in power and signal lines. It features a 440 V standoff voltage (VWM), 462 V maximum breakdown voltage (VBR), 602 V clamping voltage (VC) at 1.0 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - deployed in industrial motor drives, telecom power supplies, and DC bus protection.
For engineers reviewing the P6SMB440A-E3/52 datasheet, P6SMB440A-E3/52 pinout, P6SMB440A-E3/52 application, or P6SMB440A-E3/52 equivalent, key selection criteria include clamping performance under 10/1000 μs transients, thermal resistance (RθJA = 100 °C/W), unidirectional polarity marking, SMB (DO-214AA) package compatibility, and AEC-Q101 qualification availability via HE3/HM3 variants.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: during overvoltage events exceeding its breakdown threshold (418–462 V), it rapidly avalanches to limit downstream voltage to ≤602 V at 1.0 A IPPM. Its glass-passivated junction ensures stable leakage (<1.0 μA at 376 V) and fast response time (<1.0 ns), critical for safeguarding MOSFETs and IGBTs against lightning-induced surges and inductive switching spikes.
Thermally, it sustains 150 °C maximum junction temperature with 5.0 W steady-state power dissipation on infinite heatsink at 50 °C ambient. The SMB (DO-214AA) package supports automated placement and meets UL 94 V-0 flammability, while matte tin-plated leads comply with J-STD-002 solderability and JESD 22-B102 whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 376 V - Maximum continuous reverse operating voltage before conduction begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 418–462 V at 1.0 mA - Confirmed avalanche initiation range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 602 V at 1.0 A IPPM - Peak voltage seen by protected circuit during 10/1000 μs surge; determines stress on downstream components. |
| PPPM (Peak Pulse Power) | 600 W - Energy-handling capacity under standardized 10/1000 μs waveform; validates robustness against IEC 61000-4-5 Level 4 surges. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance; informs PCB copper pad sizing (0.2" × 0.2") for thermal management. |
| TJ max. | 150 °C - Maximum allowable junction temperature; sets upper limit for ambient + self-heating in enclosed enclosures. |
| ID (Leakage Current) | ≤1.0 μA at 376 V - Low reverse leakage preserves efficiency in high-impedance bias networks and sensor interfaces. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with cathode band marking for unidirectional polarity. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads; UL 94 V-0 compliant molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to lower-potential side of protected line; enables unidirectional clamping from cathode to anode. |
| Cathode | Current exit terminal during reverse avalanche | Marked with band; connected to higher-potential rail (e.g., DC bus); conducts surge current to ground when V > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Validates compliance with IEC 61000-4-5 surge immunity requirements for industrial equipment. |
| Clamping voltage ≤602 V at 1.0 A | Ensures protected MOSFETs or controllers remain within safe SOA limits during 1 kV/0.5 Ω surge events. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns response), improving protection fidelity. |
| MSL Level 1 (260 °C peak reflow) | Enables single-pass lead-free reflow assembly without moisture-related delamination risk. |
| Glass passivated junction | Provides stable VBR tolerance (±5%), low leakage, and long-term reliability under thermal cycling. |
Applications
| Industrial Motor Drives | Telecom DC Power Supplies |
|---|---|
Use Scenario: Protection of IGBT gate drivers and DC link capacitors against inductive kickback from contactor switching and regenerative braking. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed across DC bus rails to clamp voltage spikes up to 600 V. Use Value: Prevents IGBT destruction by limiting transient voltage to 602 V, maintaining system uptime in factory automation environments. |
Use Scenario: Surge suppression on -48 V primary input rails of telecom rectifiers exposed to lightning-induced surges on outdoor plant wiring. IC Role / Device Role / Timing Role: High-voltage TVS mounted at board edge to divert 10/1000 μs surges before reaching DC/DC converters. Use Value: Enables compliance with GR-1089-CORE Level 4 (4 kV line-to-ground) without derating or parallel staging. |
| Renewable Energy Inverters | EV Charging Station Power Stages |
Use Scenario: Protection of PV string combiner box inputs against lightning surges entering via long cable runs in solar farms. IC Role / Device Role / Timing Role: Unidirectional TVS installed between positive rail and ground to clamp transients above 376 V standoff. Use Value: Maintains 1500 V system rating margin while delivering 600 W pulse handling without thermal runaway. |
Use Scenario: DC bus protection in 1000 V-rated EV charging modules subjected to grid-switching transients and load dump events. IC Role / Device Role / Timing Role: Primary clamping device across high-side DC link, coordinated with MOVs for multi-stage protection. Use Value: Reduces failure rate of SiC MOSFETs by limiting clamped voltage to 602 V under 10/1000 μs 6 kV surges. |
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 | Same VWM/VBR/VC specs but 400 W PPPM rating; SMA package (smaller footprint, higher RθJA = 140 °C/W) | Limited to lower-energy surges; unsuitable for IEC 61000-4-5 Level 4 without parallel devices | Select only if space-constrained and surge energy ≤400 W; verify thermal margin with reduced copper area. |
| 1.5KE440A | Through-hole DO-201 package; identical 440 V VWM and 600 W PPPM but higher mounting inductance and manual assembly requirement | Not compatible with SMT production; less suitable for high-density telecom or automotive PCBs | Choose for legacy through-hole designs or prototyping where reflow compatibility is not required. |
Compared with P6SMB440A-E3/52, SMAJ440A trades pulse power and thermal performance for smaller size, while 1.5KE440A retains full power rating but sacrifices SMT manufacturability and high-frequency surge response due to lead inductance.
Availability
P6SMB440A-E3/52 is available at Aetrix Electronics and suitable for industrial motor drives, telecom DC power supplies, and renewable energy inverters requiring stable component supply, RoHS-compliant sourcing, and consistent SMB (DO-214AA) form factor across production batches.
Supply support for P6SMB440A-E3/52 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, rectifiers, and protection devices with emphasis on reliability, precision, and automotive-grade qualification.
The P6SMB Series targets high-energy transient suppression in industrial, telecom, and transportation systems, engineered for robust 600 W surge handling, low clamping ratio, and seamless SMT integration in harsh environments.
FAQ
What is the clamping voltage of P6SMB440A-E3/52 at its rated peak pulse current?
The clamping voltage (VC) of P6SMB440A-E3/52 is 602 V at 1.0 A peak pulse current (IPPM) under a 10/1000 μs waveform. This value is measured per standard test conditions and defines the maximum voltage imposed on protected circuitry during a defined surge event. The P6SMB440A-E3/52 maintains this clamping performance across its specified operating temperature range, ensuring consistent protection behavior in industrial environments.
Is P6SMB440A-E3/52 RoHS-compliant and halogen-free?
Yes, P6SMB440A-E3/52 carries the "E3" suffix, indicating it is RoHS-compliant and commercial grade per Vishay's material categorization. It is not halogen-free; for halogen-free compliance, the "M3" variant (e.g., P6SMB440A-M3/52) must be selected. Both E3 and M3 meet JESD 201 Class 2 whisker resistance and J-STD-002 solderability standards.
Can P6SMB440A-E3/52 be used in automotive applications?
P6SMB440A-E3/52 itself is not AEC-Q101 qualified; however, Vishay offers automotive-grade versions under the HE3 and HM3 suffixes (e.g., P6SMB440AHE3_D). These variants undergo additional stress testing and are marked with revision codes (e.g., "D") denoting AEC-Q101 qualification for high-reliability automotive power systems. The P6SMB440A-E3/52 remains suitable for non-automotive industrial use.
What is the thermal resistance of P6SMB440A-E3/52, and how does it affect PCB layout?
The typical junction-to-ambient thermal resistance (RθJA) of P6SMB440A-E3/52 is 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value directly informs minimum copper area requirements: reducing pad size increases thermal impedance, risking junction overheating during repetitive surges. For reliable operation at full 600 W pulse rating, the P6SMB440A-E3/52 must be placed on verified thermal land patterns per Vishay's recommended layout.
How does the unidirectional configuration of P6SMB440A-E3/52 impact circuit protection design?
The unidirectional configuration of P6SMB440A-E3/52 means it conducts only in reverse avalanche mode - protecting against positive-going transients on the cathode side - and blocks forward current like a rectifier. This makes it ideal for DC bus protection where polarity is fixed. Unlike bidirectional types (e.g., P6SMB440CA), the P6SMB440A-E3/52 requires correct orientation during placement, with the cathode band aligned toward the higher-potential rail.
P6SMB440A-E3/52 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):
- 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 (SMB)
P6SMB440A-E3/52 FAQ
1.How can I place an order for P6SMB440A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB440A-E3/52 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-E3/52 reliable?
The price and inventory of P6SMB440A-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB440A-E3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB440A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB440A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB440A-E3/52?
P6SMB440A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB440A-E3/52 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-E3/52?
For technical support, including P6SMB440A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB440A-E3/52 requirements.
6.How does Aetrix verify that P6SMB440A-E3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB440A-E3/52 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-E3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB440A-E3/52?
All P6SMB440A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB440A-E3/52, 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-E3/52 part is unused and in its original packaging.
Return procedure for P6SMB440A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB440A-E3/52 Tags
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DESD3V3E1BL-7B
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Diodes Incorporated
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