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Vishay General Semiconductor - Diodes Division P6SMB440A-E3/5B
- Part No.:
- P6SMB440A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB440A-E3/5B.pdf
- Description:
- TVS DIODE 376VWM 602VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,544
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Product details
Overview
P6SMB440A-E3/5B 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 A peak pulse current, and 600 W peak pulse power capability with a 10/1000 μs waveform - deployed in industrial motor drives, telecom power supplies, and DC-link protection circuits.
For engineers reviewing the P6SMB440A-E3/5B datasheet, P6SMB440A-E3/5B pinout, P6SMB440A-E3/5B application, or P6SMB440A-E3/5B equivalent, key selection criteria include clamping voltage margin versus system overvoltage tolerance, thermal derating above 25 °C ambient, unidirectional polarity marking for correct PCB orientation, and compatibility with automated SMT placement on SMB (DO-214AA) footprint.
Technical Context
The P6SMB440A-E3/5B operates as a silicon avalanche diode with glass-passivated junction, delivering fast response (<1 ns) to transient events such as ESD, lightning-induced surges, and inductive switching spikes. Its unidirectional configuration enables asymmetric clamping - conducting only during reverse-biased overvoltage - while maintaining low leakage (<1 μA at 376 V) under normal operation.
Thermally, it exhibits RθJA = 100 °C/W and RθJL = 20 °C/W, requiring copper pad layout per Vishay's 0.2" × 0.2" (5.0 mm × 5.0 mm) recommendation for rated 600 W pulse handling. The device is RoHS-compliant (E3 suffix), MSL Level 1 qualified, and rated for TJ = −65 °C to +150 °C operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 376 V - Maximum continuous reverse voltage before clamping initiates; defines operating margin below breakdown. |
| VBR (Breakdown Voltage) | 418–462 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 602 V at 1 A IPPM - Peak voltage seen by protected circuit during 10/1000 μs surge; critical for downstream IC survival. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy absorption capability under standardized 10/1000 μs waveform at 0.01% duty cycle. |
| ID (Reverse Leakage) | <1 μA at 376 V - Minimal standby power loss and noise coupling in high-impedance sensing or bias networks. |
| TJ Max | +150 °C - Enables use in under-hood automotive modules or enclosed industrial enclosures without forced cooling. |
| Package | SMB (DO-214AA) - Standardized 2-pin SMD outline with cathode band marking; compatible with JEDEC MS-012AC. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, molded plastic case with matte tin-plated leads. Cathode indicated by band marking on body; anode is unmarked end. Meets UL 94 V-0 flammability rating and JESD 22-B102 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when reverse voltage exceeds VBR. |
| Anode (unmarked end) | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop during overvoltage event. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Supports robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) in DC power rails without derating. |
| Glass-passivated junction | Ensures stable VBR over temperature and lifetime; eliminates moisture-induced parameter drift in humid environments. |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak - eliminates baking requirements prior to assembly. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., <100 ns edges), improving protection fidelity. |
| AEC-Q101 qualification option | HE3/HM3 variants available for automotive applications; P6SMB440A-E3/5B is commercial-grade but shares identical die design. |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
Use Scenario: Protection of IGBT gate drivers and DC-link capacitors against switching-induced voltage spikes and regenerative energy surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed across DC bus or between gate and source to clamp transient overvoltages within safe SOA limits. Use Value: Prevents cumulative gate oxide damage and catastrophic failure in 400–800 V drive systems operating at >10 kHz PWM frequency. |
Use Scenario: Input-stage surge suppression on −48 V or +54 V telecom rectifier outputs exposed to lightning-induced common-mode transients. IC Role / Device Role / Timing Role: Primary clamping device on secondary-side DC output, coordinated with upstream MOVs and filter inductors. Use Value: Limits output rail excursion to ≤602 V during 10/1000 μs surges, preserving downstream DC-DC converter input stage reliability. |
| Renewable Energy Inverters | Railway Signaling Interfaces |
Use Scenario: DC-link protection in solar string inverters where PV array transients couple into MPPT and inverter stages. IC Role / Device Role / Timing Role: Standoff-rated TVS mounted directly across bulk capacitor terminals to absorb repetitive switching energy and grid fault transients. Use Value: Maintains VWM margin above 376 V while clamping to 602 V - enabling compliance with IEC 62109 and UL 1741 surge immunity requirements. |
Use Scenario: Signal line protection on 24 V DC trackside sensor interfaces subjected to traction current coupling and EMI from passing trains. IC Role / Device Role / Timing Role: Low-leakage unidirectional suppressor on RS-485 or CAN physical layer lines, referenced to local chassis ground. Use Value: Sub-μA leakage preserves signal integrity on high-impedance bias networks; 602 V VC prevents latch-up in isolated interface ICs. |
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; SMA package (smaller footprint, higher RθJA = 140 °C/W). | Limited to lower average power dissipation; unsuitable for repeated surges in thermally constrained layouts. | Select SMAJ440A only when board space is critical and thermal management ensures TJ stays ≤125 °C. |
| 1.5SMC440A | Same electrical specs; larger SMC (DO-214AB) package with lower RθJA = 75 °C/W and higher IFSM = 200 A. | Better suited for high-repetition-rate surges and higher ambient temperatures (>70 °C). | Choose 1.5SMC440A when long-term reliability under frequent surge stress or elevated ambient is required. |
Compared with SMAJ440A and 1.5SMC440A, the P6SMB440A-E3/5B delivers optimal balance of surge robustness, thermal performance, and SMT process compatibility - offering 600 W clamping in the widely adopted SMB footprint with verified MSL Level 1 reflow resilience.
Availability
P6SMB440A-E3/5B is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, renewable energy inverters, and railway signaling interfaces requiring stable component supply, consistent parametric performance, and full traceability across production batches.
Supply support for P6SMB440A-E3/5B 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, precision, and ruggedized packaging.
The P6SMB Series targets high-energy transient suppression in harsh environments - engineered for repeatable clamping performance, low leakage, and compatibility with automated manufacturing across consumer, industrial, and infrastructure applications.
FAQ
What is the clamping voltage of the P6SMB440A-E3/5B under a 10/1000 μs surge?
The P6SMB440A-E3/5B has a maximum clamping voltage (VC) of 602 V at 1 A peak pulse current with a 10/1000 μs waveform. This value is measured per standard test conditions (TA = 25 °C, mounted on 0.2" × 0.2" copper pads) and represents the upper voltage limit imposed on the protected circuit during surge events - critical for ensuring downstream components remain within their absolute maximum ratings.
Is the P6SMB440A-E3/5B RoHS-compliant and lead-free?
Yes, the P6SMB440A-E3/5B is RoHS-compliant and lead-free, as confirmed by the "E3" suffix in its part number. It meets EU Directive 2011/65/EU and is manufactured using matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. No exemptions apply, and full material declarations are available via Vishay's compliance portal.
Does the P6SMB440A-E3/5B have AEC-Q101 qualification?
No, the P6SMB440A-E3/5B is commercial-grade and not AEC-Q101 qualified. However, Vishay offers AEC-Q101 variants under the HE3 and HM3 suffixes (e.g., P6SMB440AHE3_D), which share identical electrical characteristics but undergo additional automotive stress testing. For automotive designs requiring qualification, those variants must be specified separately.
What is the thermal resistance of the P6SMB440A-E3/5B, and how does it affect layout?
The P6SMB440A-E3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead resistance (RθJL) of 20 °C/W. To achieve rated 600 W pulse capability, PCB layout must use minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal - smaller pads cause thermal derating and reduce surge survivability. Thermal vias under pads further improve sustained power handling.
How is polarity identified on the P6SMB440A-E3/5B package?
The P6SMB440A-E3/5B is a unidirectional TVS diode with cathode polarity marked by a visible band on the SMB (DO-214AA) package body. During PCB layout, the banded end must connect to the line being protected (e.g., DC bus), while the unmarked end connects to ground or reference. Incorrect orientation renders the device non-functional for reverse-transient suppression.
P6SMB440A-E3/5B 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-E3/5B FAQ
1.How can I place an order for P6SMB440A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB440A-E3/5B 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-E3/5B reliable?
The price and inventory of P6SMB440A-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB440A-E3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB440A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB440A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB440A-E3/5B?
P6SMB440A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB440A-E3/5B 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-E3/5B?
For technical support, including P6SMB440A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB440A-E3/5B requirements.
6.How does Aetrix verify that P6SMB440A-E3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB440A-E3/5B 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-E3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB440A-E3/5B?
All P6SMB440A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB440A-E3/5B, 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-E3/5B part is unused and in its original packaging.
Return procedure for P6SMB440A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB440A-E3/5B Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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