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Vishay General Semiconductor - Diodes Division P6SMB480AHM3_C/H
- Part No.:
- P6SMB480AHM3_C/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB480AHM3_C/H.pdf
- Description:
- TVS DIODE 408VWM 658VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P6SMB480AHM3_C/H 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 480 V standoff voltage (VWM), 504 V minimum breakdown voltage (VBR), 658 V maximum clamping voltage (VC) at 0.91 A peak pulse current (IPPM), and 600 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed in industrial motor drives, telecom power supplies, and DC-link protection.
For engineers reviewing the P6SMB480AHM3_C/H datasheet, P6SMB480AHM3_C/H pinout, P6SMB480AHM3_C/H application, or P6SMB480AHM3_C/H equivalent, key selection criteria include clamping voltage margin vs. protected IC's absolute maximum rating, thermal derating above 25 °C, unidirectional polarity alignment with DC bus topology, and AEC-Q101 qualification status for automotive-adjacent systems.
Technical Context
This device operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its 456–504 V breakdown range (VBR at 1 mA). Its low incremental surge resistance ensures minimal voltage overshoot during transient events, while glass-passivated junction enhances long-term reliability under repetitive surges.
Designed for SMB (DO-214AA) surface-mount assembly, it delivers 600 W peak pulse power handling with 0.01 % duty cycle and meets J-STD-020 MSL Level 1 moisture sensitivity. The HM3 suffix confirms halogen-free, RoHS-compliant construction with AEC-Q101 qualification per ordering code P6SMB480AHM3_D/H - applicable to high-reliability industrial and transportation electronics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 408 V - Maximum continuous reverse operating voltage before conduction begins; sets upper limit for normal circuit operation. |
| VBR (Breakdown Voltage) | 456–504 V at 1 mA - Confirmed avalanche onset range; defines minimum overvoltage threshold for clamping activation. |
| VC (Clamping Voltage) | 658 V at IPPM = 0.91 A - Peak voltage seen by protected circuit during 10/1000 μs surge; critical for ensuring downstream component safety margin. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy absorption capability under standardized 10/1000 μs waveform; enables robust protection against lightning-induced transients. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; determines required PCB copper area for thermal management. |
| TJ max. | +150 °C - Maximum allowable junction temperature; supports operation in high-ambient environments like enclosed power converters. |
| Polarity | Unidirectional - Cathode marked with band; must be oriented to conduct only during negative transients relative to anode. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, AEC-Q101 qualified (HM3 suffix). Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); cathode identified by molded band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to lower-potential side of protected line; reverse-biased during surge to initiate clamping. |
| Cathode | Avalanche conduction terminal | Marked with band; connected to higher-potential side (e.g., DC+ rail); conducts surge current to ground or return path. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables protection against IEC 61000-4-5 Level 4 surges (4 kV line-earth) without external series impedance. |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage stress on downstream MOSFETs or controllers during fast transients. |
| MSL Level 1, 260 °C reflow compatible | Supports standard lead-free SMT assembly without preconditioning or special handling. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, humidity bias, and surge endurance. |
| Glass-passivated junction | Prevents moisture ingress and electromigration, extending service life in humid or thermally cycled environments. |
Applications
| Industrial Motor Drives | Telecom DC Power Supplies |
|---|---|
|
Use Scenario: Protection of IGBT gate drivers and DC-link capacitors against switching-induced voltage spikes and load dump transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed across DC+ and DC− rails to clamp positive surges exceeding 408 V. Use Value: Limits peak rail voltage to ≤658 V, preventing gate oxide rupture in 600 V-class IGBTs and sustaining system uptime under frequent motor starts/stops. |
Use Scenario: Surge suppression on -48 V telecom rectifier outputs exposed to lightning-induced common-mode transients. IC Role / Device Role / Timing Role: Unidirectional TVS connected cathode-to-rail, anode-to-ground to absorb negative-going surges on the return path. Use Value: Maintains output regulation integrity during 600 W transient events without latch-up or degradation after repeated strikes. |
| Renewable Energy Inverters | Transportation Onboard Chargers |
|
Use Scenario: DC-link protection in solar string inverters where PV array transients couple into high-voltage bus. IC Role / Device Role / Timing Role: Primary clamping device across 400–600 V DC bus, sized to handle 10/1000 μs surges up to 0.91 A. Use Value: Achieves <10 ns response time to suppress fast-rising transients before they propagate to isolation transformers or control ICs. |
Use Scenario: Input-stage surge protection in 800 V EV onboard chargers subjected to ISO 7637-2 Pulse 5a/b load dump events. IC Role / Device Role / Timing Role: Unidirectional TVS installed between HV+ and chassis ground to divert surge current away from AC/DC controller. Use Value: Withstands 150 °C junction temperature and passes AEC-Q101 stress tests, supporting 15-year automotive lifecycle requirements. |
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 VWM (408 V), but lower PPPM (400 W); SMA package (smaller footprint, higher RθJA = 140 °C/W). | Limited to lower-energy surges; requires larger copper pour or forced cooling for equivalent thermal performance. | Select when board space is constrained and surge energy does not exceed 400 W. |
| 1.5SMC480A | Same electrical specs (VWM, VBR, VC), but SMC package (DO-214AB); higher IPPM (0.95 A), same PPPM (600 W). | Greater thermal mass improves repetitive surge endurance; requires larger PCB pad layout (6.22 mm × 4.83 mm). | Select when enhanced thermal cycling reliability or legacy SMC footprint compatibility is required. |
Compared with SMAJ480A-E3/5B, P6SMB480AHM3_C/H delivers 50 % higher surge energy handling in identical mounting conditions; versus 1.5SMC480A, it reduces board area by 28 % while maintaining full 600 W capability and adding AEC-Q101 qualification.
Availability
P6SMB480AHM3_C/H is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, renewable energy inverters, and transportation onboard chargers requiring stable component supply, AEC-Q101 validation, and consistent surge performance across production batches.
Supply support for P6SMB480AHM3_C/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 targets high-power transient suppression in harsh environments, engineered for robustness in industrial automation, telecom infrastructure, and electric vehicle subsystems where failure tolerance and long-term stability are critical.
FAQ
What is the maximum clamping voltage of the P6SMB480AHM3_C/H under a 10/1000 μs surge?
The P6SMB480AHM3_C/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 Figure 1 in the Vishay datasheet 88370 and defines the highest voltage the protected circuit will experience during such a transient event. Engineers must verify that this clamping level remains below the absolute maximum rating of downstream components like MOSFETs or controllers. The P6SMB480AHM3_C/H achieves this with low incremental surge resistance and tight VBR distribution.
Is the P6SMB480AHM3_C/H AEC-Q101 qualified, and what does the 'HM3' suffix indicate?
Yes, the P6SMB480AHM3_C/H is AEC-Q101 qualified - confirmed by Vishay's ordering code structure where 'HM3' denotes halogen-free, RoHS-compliant construction with full AEC-Q101 stress testing (including temperature cycling, HTRB, and surge endurance). The '_D/H' suffix in the full part number specifies the AEC-Q101 variant for high-voltage models (250–540 V range), distinguishing it from commercial-grade 'E3' or 'M3' versions. This makes the P6SMB480AHM3_C/H suitable for automotive-adjacent applications such as onboard chargers and battery management systems.
How does the SMB (DO-214AA) package of the P6SMB480AHM3_C/H compare thermally to larger packages like SMC?
The SMB package of the P6SMB480AHM3_C/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W on standard 0.2" × 0.2" copper pads, compared to ~65 °C/W for the larger SMC (DO-214AB) package. This means the P6SMB480AHM3_C/H requires more careful thermal design - such as increased copper area or thermal vias - to maintain TJ ≤ 150 °C under repetitive surges. However, its compact size (4.57 mm × 3.94 mm) saves board space, and its MSL Level 1 rating ensures compatibility with standard lead-free reflow profiles without baking.
Can the P6SMB480AHM3_C/H be used in bidirectional configurations?
No, the P6SMB480AHM3_C/H is strictly unidirectional, as indicated by the 'A' suffix and absence of 'CA' in its part number. Bidirectional variants use the 'CA' suffix (e.g., P6SMB480CA) and exhibit symmetrical clamping in both polarities. Using the P6SMB480AHM3_C/H in a bidirectional application would result in forward conduction during negative transients, potentially causing failure. For AC-coupled or floating-line protection, select a verified bidirectional part - the P6SMB480AHM3_C/H must be oriented with cathode toward the higher-potential rail.
What is the leakage current specification for the P6SMB480AHM3_C/H at its standoff voltage?
The P6SMB480AHM3_C/H exhibits a maximum reverse leakage current (ID) of 1.0 μA at its standoff voltage (VWM) of 408 V, measured at TA = 25 °C. This ultra-low leakage ensures negligible power loss in standby mode and prevents false triggering in high-impedance sensing circuits. The value is specified in Table 1 of Vishay document 88370 and remains stable across temperature due to the device's glass-passivated junction - a key differentiator from epoxy-passivated alternatives that may show elevated leakage above 85 °C.
P6SMB480AHM3_C/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:
- Obsolete
- 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:
- -
- 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_C/H FAQ
1.How can I place an order for P6SMB480AHM3_C/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB480AHM3_C/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_C/H reliable?
The price and inventory of P6SMB480AHM3_C/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_C/H is usually 5 days.
3.What payment methods are accepted for P6SMB480AHM3_C/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB480AHM3_C/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB480AHM3_C/H?
P6SMB480AHM3_C/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB480AHM3_C/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_C/H?
For technical support, including P6SMB480AHM3_C/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB480AHM3_C/H requirements.
6.How does Aetrix verify that P6SMB480AHM3_C/H is sourced from the original manufacturer or authorized distributors?
All P6SMB480AHM3_C/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_C/H meets industry standards.
7.What is the process for return or replacement of P6SMB480AHM3_C/H?
All P6SMB480AHM3_C/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB480AHM3_C/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_C/H part is unused and in its original packaging.
Return procedure for P6SMB480AHM3_C/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB480AHM3_C/H Tags
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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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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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