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Vishay General Semiconductor - Diodes Division P6SMB440AHE3_A/H
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- Part No.:
- P6SMB440AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB440AHE3_A/H.pdf
- Description:
- TVS DIODE 376VWM 602VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,227
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Product details
Overview
P6SMB440AHE3_A/H 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 P6SMB440AHE3_A/H datasheet, P6SMB440AHE3_A/H pinout, P6SMB440AHE3_A/H application, or P6SMB440AHE3_A/H equivalent, key selection criteria include clamping voltage (602 V at 1 A IPPM), low leakage (<1.0 μA at 376 V), AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), and RoHS-compliant matte tin plating.
Technical Context
This device operates as a unidirectional avalanche diode with glass-passivated junction, optimized for transient suppression on high-impedance DC lines where fast response (<1 ns) and stable clamping under repetitive surges are required. Its 150 °C max junction temperature and MSL Level 1 rating support reflow-compatible automated assembly.
The P6SMB440AHE3_A/H exhibits a positive temperature coefficient of VBR (+0.110 %/°C), enabling predictable voltage drift across operating range. It is designed for single-pulse and low-duty-cycle (0.01 %) surge conditions per IEC 61000-4-5, with derating applied above TA = 25 °C per Fig. 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 376 V - Maximum continuous reverse voltage before significant leakage; defines safe operating DC rail margin. |
| VBR (Breakdown Voltage) | 418–462 V at 1 mA - Avalanche onset range; ensures reliable triggering above nominal system voltage. |
| VC (Clamping Voltage) | 602 V at 1 A IPPM - Peak voltage seen by protected circuit during 10/1000 μs surge; determines downstream component stress. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy absorption capability under standardized 10/1000 μs waveform; enables IEC 61000-4-5 compliance. |
| ID (Reverse Leakage) | <1.0 μA at 376 V - Minimal standby current draw; critical for low-power or battery-backed systems. |
| TJ max | 150 °C - Maximum junction temperature; sets thermal design limits for PCB copper pad area and ambient derating. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs heatsinking requirements. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to ground or low-side reference | Completes conduction path during transient clamp; must be routed with low-inductance trace to minimize overshoot. |
| Cathode | Current exit terminal in forward bias; connected to protected line | Acts as high-impedance node until VBR exceeded; polarity-sensitive placement prevents misapplication in unidirectional layout. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing-enables use in under-hood and EV charging infrastructure. |
| Glass passivated junction | Enhances long-term stability and moisture resistance versus epoxy-passivated alternatives-critical for industrial outdoor deployments. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without preconditioning-reduces manufacturing complexity and cost. |
| 600 W peak pulse power | Supports IEC 61000-4-5 Level 4 (4 kV line-to-earth) surge immunity when paired with appropriate series impedance-meets telecom and industrial EMC standards. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., inductive switch-off)-preserves integrity of downstream MOSFET gate drivers and controllers. |
Applications
| Industrial Power Supply Protection | Telecom Rectifier Module |
|---|---|
|
Use Scenario: Protecting 400 V DC output rails in switched-mode power supplies against load dump and lightning-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed across output capacitor to clamp overvoltage events before they reach regulation ICs or downstream converters. Use Value: Clamps to 602 V at 1 A, limiting stress on 650 V-rated output capacitors and synchronous rectifiers while maintaining system uptime. |
Use Scenario: Safeguarding AC/DC rectifier outputs in central office telecom equipment exposed to induced surges on long-line feeds. IC Role / Device Role / Timing Role: Primary overvoltage suppressor on bulk DC bus prior to DC-DC conversion stages and monitoring circuits. Use Value: Withstands 600 W pulses and <1.0 μA leakage at 376 V, ensuring minimal standby loss and reliable fault clearing in 24/7 operation. |
| EV Charging Station DC Link | High-Voltage Sensor Interface |
|
Use Scenario: Guarding DC link between AC/DC front-end and DC/DC isolation stage in 400–800 V EV chargers. IC Role / Device Role / Timing Role: Fast-response transient suppressor absorbing switching spikes from IGBTs and SiC MOSFETs during commutation. Use Value: Sub-ns response time and 150 °C TJ rating enable operation in thermally constrained enclosures without derating penalties. |
Use Scenario: Shielding precision voltage dividers and isolated ADC inputs in HV battery management systems. IC Role / Device Role / Timing Role: High-impedance protection element placed directly at sensor input node to prevent ESD damage without loading signal path. Use Value: 376 V VWM allows direct integration into 400 V battery string monitoring circuits while maintaining <1 μA leakage for measurement accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ440A | Same VWM/VBR/VC specs but not AEC-Q101 qualified; RθJA = 95 °C/W; commercial-grade only | Lacks automotive qualification and halogen-free option; suitable for non-automotive industrial use | Select when AEC-Q101 is not required and cost sensitivity outweighs qualification needs |
| 1.5SMC440A | Higher RθJA (110 °C/W); same 600 W PPPM but larger SMC (DO-214AB) package; no AEC-Q101 variant available | Requires larger PCB footprint; less suitable for dense layouts; limited to commercial temp range | Choose only if SMB footprint is unavailable and thermal margin permits higher RθJA |
Compared with SMBJ440A and 1.5SMC440A, the P6SMB440AHE3_A/H uniquely combines AEC-Q101 qualification, SMB footprint, and RoHS/halogen-free compliance-making it the only drop-in solution for automotive-grade 400 V+ DC bus protection requiring MSL Level 1 reflow compatibility.
Availability
P6SMB440AHE3_A/H is available at Aetrix Electronics and suitable for industrial power supplies, telecom rectifier modules, EV charging stations, and high-voltage sensor interfaces requiring stable component supply, automotive qualification, and RoHS/halogen-free compliance.
Supply support for P6SMB440AHE3_A/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific performance.
The P6SMB Series targets high-energy transient suppression in space-constrained, high-reliability applications-including automotive, industrial, and telecom-where consistent clamping, low leakage, and process-qualified packaging are mandatory.
FAQ
What is the clamping voltage of the P6SMB440AHE3_A/H under a 10/1000 μs surge?
The P6SMB440AHE3_A/H has a maximum clamping voltage (VC) of 602 V at 1 A peak pulse current (IPPM) under 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 defines the upper voltage limit imposed on protected circuitry during transient events. The P6SMB440AHE3_A/H maintains this clamping performance across its specified operating temperature range.
Is the P6SMB440AHE3_A/H AEC-Q101 qualified?
Yes, the P6SMB440AHE3_A/H is AEC-Q101 qualified. The "HE3" suffix denotes RoHS-compliant and AEC-Q101 qualified construction, validated per stress test requirements including temperature cycling, high-temperature reverse bias (HTRB), and ESD. This qualification confirms suitability for automotive applications such as EV charging infrastructure and under-hood power electronics where reliability under thermal and electrical stress is critical. The P6SMB440AHE3_A/H meets these requirements in its SMB (DO-214AA) package.
What is the standoff voltage (VWM) rating for the P6SMB440AHE3_A/H?
The P6SMB440AHE3_A/H has a maximum reverse standoff voltage (VWM) of 376 V. This is the highest DC or continuous peak voltage the device can withstand without entering avalanche conduction. It is derived from the 440 V nominal part number and aligns with Vishay's published electrical characteristics table. The P6SMB440AHE3_A/H remains in high-impedance state below this threshold, drawing less than 1.0 μA leakage current-ensuring minimal impact on system efficiency.
Does the P6SMB440AHE3_A/H have a bidirectional variant?
No, the P6SMB440AHE3_A/H is a unidirectional TVS diode. Bidirectional variants in the P6SMB family use the "CA" suffix (e.g., P6SMB440CA), but no CA version is listed for the 440 V rating in the official datasheet. The "A" suffix in P6SMB440AHE3_A/H explicitly indicates unidirectional configuration, with cathode marked by a band. For bidirectional protection at similar voltage levels, engineers should evaluate lower-voltage CA parts or alternate families such as SMAJ or SMCJ with verified 440 V bidirectional ratings.
What is the thermal resistance (RθJA) of the P6SMB440AHE3_A/H?
The P6SMB440AHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad per terminal. This value assumes standard JEDEC test conditions and is critical for calculating allowable power dissipation at elevated ambient temperatures. Derating curves in Figure 2 of the datasheet show how peak pulse power must be reduced above TA = 25 °C. The P6SMB440AHE3_A/H's RθJA supports thermal management in compact, high-density PCB layouts without additional heatsinking.
P6SMB440AHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Tape & Box (TB)
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
P6SMB440AHE3_A/H FAQ
1.How can I place an order for P6SMB440AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB440AHE3_A/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 P6SMB440AHE3_A/H reliable?
The price and inventory of P6SMB440AHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB440AHE3_A/H is usually 5 days.
3.What payment methods are accepted for P6SMB440AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB440AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB440AHE3_A/H?
P6SMB440AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB440AHE3_A/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 P6SMB440AHE3_A/H?
For technical support, including P6SMB440AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB440AHE3_A/H requirements.
6.How does Aetrix verify that P6SMB440AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB440AHE3_A/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 P6SMB440AHE3_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB440AHE3_A/H?
All P6SMB440AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB440AHE3_A/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 P6SMB440AHE3_A/H part is unused and in its original packaging.
Return procedure for P6SMB440AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB440AHE3_A/H Tags
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