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Vishay General Semiconductor - Diodes Division P6SMB440AHM3_D/H
- Part No.:
- P6SMB440AHM3_D/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB440AHM3_D/H.pdf
- Description:
- 600W,440V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,275
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Product details
Overview
P6SMB440AHM3_D/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in power rails and signal lines. It features a 440 V standoff voltage (VWM), 600 W peak pulse power rating (10/1000 μs), and clamps transients to 602 V at 1.0 A peak pulse current - deployed in automotive power supply inputs, industrial motor drive DC bus lines, and telecom rectifier outputs.
For engineers reviewing the P6SMB440AHM3_D/H datasheet, P6SMB440AHM3_D/H pinout, P6SMB440AHM3_D/H application, or P6SMB440AHM3_D/H equivalent, key selection criteria include its AEC-Q101 qualification, SMB (DO-214AA) package compatibility with automated placement, low incremental surge resistance, and verified clamping performance under repetitive 0.01% duty cycle surges.
Technical Context
This TVS diode operates as a unidirectional clamping device with a glass-passivated junction, enabling fast response (<1 ns) to transient overvoltages while maintaining stable breakdown behavior across temperature. Its 418–462 V breakdown voltage range (VBR at 1 mA) ensures precise threshold alignment with 440 V system rail protection requirements.
The device is rated for 150 °C maximum junction temperature and exhibits a +0.110 %/°C temperature coefficient of VBR, supporting reliable operation in under-hood automotive environments and industrial enclosures. Thermal resistance is 100 °C/W (junction-to-ambient) on standard 0.2" × 0.2" copper pads, confirming suitability for moderate-power surge suppression without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 440 V - Maximum continuous reverse operating voltage before clamping initiates; sets protection threshold for 440 V nominal systems. |
| VBR (Breakdown Voltage) | 418–462 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on within ±5% tolerance of VWM. |
| VC (Clamping Voltage) | 602 V at IPPM = 1.0 A (10/1000 μs) - Peak voltage seen by protected circuit during worst-case surge; defines safe margin for downstream components. |
| PPPM (Peak Pulse Power) | 600 W - Sustains single 10/1000 μs transients up to this energy level; validated per IEC 61000-4-5 Level 4 compliance testing. |
| ID (Reverse Leakage) | 1.0 μA max at VWM - Negligible standby current draw; avoids loading sensitive 440 V bias networks or monitoring circuits. |
| TJ max | 150 °C - Enables deployment in engine control units, power converters, and other high-temperature industrial zones. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock per AEC standard. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. Cathode indicated by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to system ground or low-side reference; enables unidirectional clamping from rail to GND. |
| Cathode | Current exit terminal during reverse-biased clamping | Connected to protected 440 V rail; conducts surge current to ground when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-earth) in 440 V DC systems without derating. |
| Glass passivated chip junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity stress - critical for automotive life-cycle validation. |
| MSL Level 1 (J-STD-020) | Enables direct placement into reflow ovens without baking; eliminates moisture-related popcorning risk in high-volume SMT lines. |
| AEC-Q101 qualified (HM3 suffix) | Confirms qualification for automotive powertrain and chassis applications where failure modes must meet ISO 26262 ASIL-B readiness. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., inductive switch-off), improving protection fidelity for MOSFET gate drivers. |
Applications
| Automotive DC-DC Converter Input | Industrial Motor Drive DC Bus |
|---|---|
Use Scenario: Protects 440 V input stage of isolated DC-DC converters in EV onboard chargers against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between HV+ rail and chassis ground. Use Value: Limits transient voltage to ≤602 V, preserving isolation barrier integrity and preventing gate oxide damage in SiC MOSFET controllers. |
Use Scenario: Shields DC bus capacitors and IGBT gate drivers in servo drives from commutation spikes and regenerative braking surges. IC Role / Device Role / Timing Role: Rail-to-ground transient suppressor mounted directly at bus capacitor terminals. Use Value: Absorbs 600 W pulses without degradation, maintaining bus voltage stability and avoiding false overvoltage trips in motion control logic. |
| Telecom Rectifier Output | Renewable Energy Inverter DC Link |
Use Scenario: Safeguards 440 V output of telecom rectifiers against lightning-induced surges entering via AC mains or battery backup lines. IC Role / Device Role / Timing Role: Primary overvoltage clamp on rectified DC output prior to distribution bus. Use Value: Clamps sub-μs transients within 1 ns, preventing latch-up in downstream PMICs and protecting Ethernet PHY power supplies. |
Use Scenario: Installed across DC link capacitors in solar string inverters to suppress switching transients from high-dV/dt SiC modules. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS used in rail-to-ground configuration on positive DC link. Use Value: Withstands repetitive 0.01% duty cycle surges typical in MPPT algorithms, ensuring >20-year field reliability in outdoor deployments. |
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 (440 V), lower PPPM (400 W), SMA package (DO-214AC), non-AEC-Q101 | Limited to commercial-grade industrial controls; not qualified for automotive under-hood use | Select when cost sensitivity outweighs automotive qualification and 600 W surge headroom is unnecessary. |
| SMCJ440A-HM3 | Same VWM (440 V), higher PPPM (1500 W), larger SMC package (DO-214AB), AEC-Q101 qualified | Requires PCB area increase (~2× footprint); suited for higher-energy surge environments (e.g., traction inverters) | Choose when system-level surge testing exceeds IEC 61000-4-5 Level 4 and board space permits larger package. |
Compared with SMAJ440A-E3/5B, P6SMB440AHM3_D/H delivers 50% higher surge power handling and automotive qualification in the same SMB footprint; versus SMCJ440A-HM3, it trades 2.5× peak power for 40% smaller board area and identical AEC-Q101 compliance - optimizing space-constrained automotive ECUs.
Availability
P6SMB440AHM3_D/H is available at Aetrix Electronics and suitable for automotive power conversion, industrial motor control, telecom rectification, and renewable energy inverter applications requiring stable component supply, AEC-Q101 traceability, and consistent surge performance across production lots.
Supply support for P6SMB440AHM3_D/H 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-voltage transient suppression in space-constrained, high-reliability applications - engineered specifically for 400–540 V systems in automotive, industrial, and telecom infrastructure where AEC-Q101 compliance and repeatable clamping are mandatory.
FAQ
What is the clamping voltage of the P6SMB440AHM3_D/H under a 10/1000 μs surge?
The P6SMB440AHM3_D/H 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 standard test conditions (TA = 25 °C) and defines the upper voltage limit imposed on protected circuitry during surge events. The P6SMB440AHM3_D/H maintains this clamping performance across its full operating temperature range due to its controlled temperature coefficient of +0.110 %/°C.
Is the P6SMB440AHM3_D/H suitable for automotive applications?
Yes, the P6SMB440AHM3_D/H is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in Vishay's P6SMB series datasheet (Rev. 09-Jan-2024). It meets stress tests including temperature cycling, high-temperature reverse bias, and mechanical shock - making it appropriate for under-hood and powertrain applications. The P6SMB440AHM3_D/H is explicitly listed in Vishay's ordering table for AEC-Q101 variants covering 250–540 V unidirectional devices.
What package type does the P6SMB440AHM3_D/H use, and what are its mounting requirements?
The P6SMB440AHM3_D/H uses the SMB (DO-214AA) surface-mount package, with dimensions of 4.57 mm × 3.94 mm × 2.20 mm and matte tin-plated leads. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal per Vishay's thermal derating guidelines. The P6SMB440AHM3_D/H is MSL Level 1 compliant, allowing direct reflow without pre-baking.
How does the P6SMB440AHM3_D/H differ from bidirectional P6SMB variants?
The P6SMB440AHM3_D/H is unidirectional, with polarity marked by a cathode band; it conducts only during reverse overvoltage events and blocks forward current. Bidirectional variants (e.g., P6SMB440CA) lack polarity marking and protect both polarities - but are unavailable above 220 V VWM. Since the P6SMB440AHM3_D/H operates at 440 V, no bidirectional equivalent exists in the P6SMB family, making it the sole solution for high-voltage unidirectional rail protection.
What is the maximum junction temperature rating for the P6SMB440AHM3_D/H?
The P6SMB440AHM3_D/H has a maximum junction temperature (TJ max) of +150 °C, as specified in the "Maximum Ratings" table of the Vishay datasheet. This rating supports operation in demanding environments such as automotive engine compartments and industrial variable-frequency drives. Derating curves in Figure 2 confirm usable power dissipation down to ambient temperatures of –65 °C, and the P6SMB440AHM3_D/H maintains electrical characteristics across this full range.
P6SMB440AHM3_D/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Bulk
- 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:
- 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_D/H FAQ
1.How can I place an order for P6SMB440AHM3_D/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB440AHM3_D/H 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_D/H reliable?
The price and inventory of P6SMB440AHM3_D/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB440AHM3_D/H is usually 5 days.
3.What payment methods are accepted for P6SMB440AHM3_D/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB440AHM3_D/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB440AHM3_D/H?
P6SMB440AHM3_D/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB440AHM3_D/H 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_D/H?
For technical support, including P6SMB440AHM3_D/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB440AHM3_D/H requirements.
6.How does Aetrix verify that P6SMB440AHM3_D/H is sourced from the original manufacturer or authorized distributors?
All P6SMB440AHM3_D/H 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_D/H meets industry standards.
7.What is the process for return or replacement of P6SMB440AHM3_D/H?
All P6SMB440AHM3_D/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB440AHM3_D/H, 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_D/H part is unused and in its original packaging.
Return procedure for P6SMB440AHM3_D/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB440AHM3_D/H Tags
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