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Vishay General Semiconductor - Diodes Division P6SMB480AHM3_A/H
- Part No.:
- P6SMB480AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB480AHM3_A/H.pdf
- Description:
- TVS DIODE 408VWM 658VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,575
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Product details
Overview
P6SMB480AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for high-energy surge protection on DC power rails and signal lines. It features a 480 V standoff voltage (VWM), 504 V minimum breakdown voltage (VBR), 600 W peak pulse power rating (10/1000 μs), and clamps transients to ≤658 V at 0.91 A peak pulse current - ideal for protecting industrial power supplies and telecom rectifier outputs.
For engineers reviewing the P6SMB480AHM3_A/H datasheet, P6SMB480AHM3_A/H pinout, P6SMB480AHM3_A/H application, or P6SMB480AHM3_A/H equivalent, key selection criteria include its 480 V VWM rating, SMB (DO-214AA) package compatibility with automated SMT assembly, AEC-Q101 qualification status (HM3 suffix), halogen-free RoHS compliance, and thermal resistance of 100 °C/W junction-to-ambient.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, optimized for transient suppression on positive-rail circuits. Its glass-passivated junction ensures stable avalanche characteristics, low incremental surge resistance, and fast response time (<1 ns) to ESD and lightning-induced surges.
The device is rated for 150 °C maximum junction temperature and derates linearly above 25 °C ambient per Figure 2 in the datasheet. It meets J-STD-020 MSL Level 1 and supports reflow up to 260 °C peak, with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 480 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 400–480 V systems. |
| VBR (Breakdown Voltage) | 456–504 V at 1 mA - Confirmed avalanche onset range; ensures reliable triggering without premature conduction. |
| VC (Clamping Voltage) | ≤658 V at IPPM = 0.91 A (10/1000 μs) - Maximum voltage seen by protected circuit during worst-case surge; critical for MOSFET/IC overvoltage margin. |
| PPPM (Peak Pulse Power) | 600 W - Sustains standardized 10/1000 μs surge waveform at 0.01% duty cycle; validates robustness against IEC 61000-4-5 Level 4 surges. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on 0.2" × 0.2" copper pads; determines required PCB copper area for thermal management. |
| TJ max. | 150 °C - Maximum allowable junction temperature; sets upper limit for ambient + self-heating in sealed enclosures. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with industry-standard pick-and-place and reflow profiles. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; cathode indicated by band on one end; no marking on bidirectional variants (not applicable here).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; completes clamping loop when transient exceeds VWM. |
| Cathode | High-side connection point | Connected to protected line (e.g., +480 V rail); carries surge current into anode during clamping event. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables protection against high-energy surges per IEC 61000-4-5, including indirect lightning strikes on AC/DC input stages. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock - suitable for EV charging infrastructure and under-hood modules. |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for industrial and telecom equipment sold in EU, China, and Japan markets. |
| MSL Level 1 moisture sensitivity | Allows indefinite floor life before reflow; eliminates baking requirement and simplifies SMT line logistics. |
| Glass-passivated junction | Ensures stable, repeatable avalanche behavior over lifetime and across temperature; reduces parameter drift vs. epoxy-passivated alternatives. |
Applications
| Industrial Power Supply Protection | Telecom Rectifier Output Clamping |
|---|---|
|
Use Scenario: Protecting 480 V DC output rails in industrial switch-mode power supplies against load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between output rail and ground to clamp overvoltage events within microseconds. Use Value: Limits transient voltage to ≤658 V, preserving downstream DC-DC converters and isolation amplifiers rated for 700 V isolation. |
Use Scenario: Safeguarding rectified 400–480 V DC bus in telecom base station power systems exposed to grid surges and lightning coupling. IC Role / Device Role / Timing Role: Standoff-rated clamping device absorbing repetitive 600 W surges without degradation. Use Value: Maintains system uptime by preventing MOSFET failure in front-end rectifier stages during utility grid disturbances. |
| EV Charging Station DC Link | Renewable Energy Inverter DC Bus |
|
Use Scenario: Surge protection on high-voltage DC link (400–500 V) in Level 2 and DC fast-charging stations. IC Role / Device Role / Timing Role: Primary overvoltage clamp on DC+ rail referenced to chassis ground. Use Value: Withstands 0.01% duty cycle surges per IEC 61000-4-5, meeting UL 1741 SA and IEEE 1547-2018 grid-interconnection requirements. |
Use Scenario: Protecting DC bus in solar string inverters where PV array transients couple into 450–550 V nominal bus voltages. IC Role / Device Role / Timing Role: Unidirectional transient suppressor mounted directly across DC+ and DC− terminals. Use Value: Clamps fast-rising transients from lightning-induced ground potential rise while maintaining <10 μA leakage at 480 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ480A-E3/5B | Same 480 V VWM, but lower PPPM (400 W), higher RθJA (140 °C/W), non-AEC-Q101, standard RoHS (E3). | Limited to commercial-grade industrial controls; not suitable for automotive or harsh-environment deployments. | Select when cost sensitivity outweighs surge robustness and automotive qualification requirements. |
| 1.5SMC480A | Same VWM and VC, but larger SMC (DO-214AB) package (7.11 mm × 6.22 mm), higher thermal mass, RθJA ≈ 75 °C/W. | Better thermal performance in high-power density designs; requires larger PCB footprint and different stencil layout. | Choose when board space permits and junction temperature margin is critical under sustained surge conditions. |
Compared with P6SMB480AHM3_A/H, SMAJ480A-E3/5B offers reduced surge handling and no automotive qualification, while 1.5SMC480A provides superior thermal dissipation at the cost of increased footprint - making P6SMB480AHM3_A/H the optimal balance of compact SMB packaging, 600 W capability, and AEC-Q101 compliance for high-reliability 480 V systems.
Availability
P6SMB480AHM3_A/H is available at Aetrix Electronics and suitable for industrial power supplies, telecom rectifier modules, EV charging infrastructure, and renewable energy inverters requiring stable component supply with halogen-free, AEC-Q101-qualified surge protection.
Supply support for P6SMB480AHM3_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 optimization.
The P6SMB series was developed for high-power, surface-mount transient suppression in space-constrained, high-voltage DC systems - targeting industrial automation, telecom infrastructure, and electric vehicle subsystems where robustness and standardized packaging are critical.
FAQ
What is the maximum clamping voltage of the P6SMB480AHM3_A/H under a 10/1000 μs surge?
The P6SMB480AHM3_A/H has a maximum clamping voltage (VC) of 658 V when subjected to its rated peak pulse current of 0.91 A 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 defines the upper voltage limit imposed on protected circuitry during surge events. The P6SMB480AHM3_A/H maintains this clamping performance consistently due to its glass-passivated junction and low incremental surge resistance.
Is the P6SMB480AHM3_A/H suitable for automotive applications?
Yes, the P6SMB480AHM3_A/H is AEC-Q101 qualified, as confirmed by the HM3 suffix in its part number, indicating full compliance with stress tests for temperature cycling, high-temperature reverse bias, and mechanical shock. It is designed for use in automotive subsystems such as onboard chargers, DC-DC converters, and battery management interfaces operating in 400–500 V domains. The P6SMB480AHM3_A/H meets these requirements without derating at temperatures up to 150 °C junction.
What does the "HM3" suffix indicate in P6SMB480AHM3_A/H?
The "HM3" suffix in P6SMB480AHM3_A/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification - distinguishing it from commercial-grade variants like E3 or M3. The "H" indicates 7" tape-and-reel packaging (750 units per reel), and "A/H" specifies revision level A in that packaging format. This suffix confirms the P6SMB480AHM3_A/H meets stringent environmental and reliability standards required for industrial and automotive deployments.
How does the P6SMB480AHM3_A/H compare to bidirectional TVS diodes in the same series?
The P6SMB480AHM3_A/H is unidirectional, meaning it conducts only during reverse-biased overvoltage events and blocks forward current - unlike bidirectional variants (e.g., P6SMB480CA) that protect AC-coupled or floating lines. Its cathode band identifies polarity, enabling precise placement on positive-rail DC systems. The P6SMB480AHM3_A/H offers identical VWM, VBR, and PPPM ratings as its bidirectional counterparts but is unsuitable for AC signal lines or differential buses where symmetrical clamping is required.
What is the thermal resistance and recommended pad layout for the P6SMB480AHM3_A/H?
The P6SMB480AHM3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the datasheet. To achieve this rating, the PCB must use minimum pad dimensions of 0.086" × 0.060" (2.18 mm × 1.52 mm) per terminal with adequate thermal relief. The P6SMB480AHM3_A/H relies on copper area - not heatsinks - for thermal management, and exceeding recommended pad size improves derating margin above 25 °C ambient.
P6SMB480AHM3_A/H 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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 408V
- Voltage - Breakdown (Min):
- 456V
- Voltage - Clamping (Max) @ Ipp:
- 658V
- Current - Peak Pulse (10/1000µs):
- 910mA
- 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)
P6SMB480AHM3_A/H FAQ
1.How can I place an order for P6SMB480AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB480AHM3_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 P6SMB480AHM3_A/H reliable?
The price and inventory of P6SMB480AHM3_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 P6SMB480AHM3_A/H is usually 5 days.
3.What payment methods are accepted for P6SMB480AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB480AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB480AHM3_A/H?
P6SMB480AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB480AHM3_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 P6SMB480AHM3_A/H?
For technical support, including P6SMB480AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB480AHM3_A/H requirements.
6.How does Aetrix verify that P6SMB480AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB480AHM3_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 P6SMB480AHM3_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB480AHM3_A/H?
All P6SMB480AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB480AHM3_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 P6SMB480AHM3_A/H part is unused and in its original packaging.
Return procedure for P6SMB480AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB480AHM3_A/H Tags
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