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Vishay General Semiconductor - Diodes Division P6SMB480A-M3/5B
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- Part No.:
- P6SMB480A-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB480A-M3/5B.pdf
- Description:
- TVS DIODE 408VWM 658VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,567
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Product details
Overview
P6SMB480A-M3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 480 V standoff voltage (VWM), 504 V minimum 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 P6SMB480A-M3/5B datasheet, P6SMB480A-M3/5B pinout, P6SMB480A-M3/5B application, or P6SMB480A-M3/5B equivalent, this device delivers precise clamping at 658 V under 0.91 A peak pulse current, with low temperature coefficient (0.110 %/°C) and halogen-free RoHS compliance per M3 suffix - critical for high-reliability, thermally constrained designs.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: it remains high-impedance below 408 V (VWM), then avalanches sharply at 456–504 V (VBR @ 1 mA) to limit transient overvoltages. Its 600 W peak pulse rating is validated per 10/1000 μs waveform with 0.01% duty cycle, and thermal resistance is 100 °C/W junction-to-ambient on standard 0.2" × 0.2" copper pads.
The device features glass-passivated junction, matte tin-plated leads compliant with J-STD-002, and meets MSL Level 1 (260 °C reflow peak). With 150 °C max junction temperature and -65 °C to +150 °C operating range, it supports extended-life deployment in harsh ambient environments without derating penalties up to 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 408 V - maximum continuous reverse working voltage before conduction begins; defines safe DC operating ceiling. |
| VBR (Breakdown Voltage) | 456–504 V @ 1 mA - sharp avalanche onset range; ensures predictable clamping initiation under transients. |
| VC (Clamping Voltage) | 658 V @ IPPM = 0.91 A - maximum voltage seen by protected circuit during full-rated surge event. |
| PPPM (Peak Pulse Power) | 600 W (10/1000 μs) - surge energy handling capacity; enables protection against lightning-induced surges per IEC 61000-4-5. |
| RθJA | 100 °C/W - thermal resistance junction-to-ambient on minimal pad layout; informs heatsinking requirements for sustained operation. |
| TJ max | +150 °C - maximum junction temperature; supports operation in enclosed industrial enclosures without active cooling. |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 5.59 mm length, 4.06 mm width, and 2.20 mm height; compatible with automated pick-and-place. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional polarity marked with cathode band. Dimensions: 5.59 mm × 4.06 mm × 2.20 mm. Matte tin-plated terminals, solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to lower-potential side of protected line; not used in normal reverse-biased TVS operation. |
| Cathode | Current exit terminal during reverse avalanche | Connected to higher-potential rail (e.g., +HV DC bus); conducts surge current to ground when V > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables single-event suppression of 1 kV/500 A lightning surges per IEC 61000-4-5 Level 4 without failure. |
| Glass-passivated chip junction | Ensures long-term stability of VBR and leakage under humidity, thermal cycling, and high-temperature storage. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets IPC-1752A material declaration requirements and EU Directive 2015/863 for sustainable manufacturing. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without prebaking; eliminates moisture-related popcorning risk. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns rise time), improving protection margin for sensitive gate drivers. |
Applications
| Industrial HV DC Power Supply | Telecom Rectifier Module |
|---|---|
Use Scenario: Protection of 400–600 V DC output stage against load dump and inductive switching spikes in DIN-rail mounted PSUs. IC Role / Device Role / Timing Role: Shunt clamping element placed across bulk capacitor terminals to clamp transients before they reach downstream DC-DC converters. Use Value: Limits voltage excursions to ≤658 V during 600 W surges, preserving reliability of 600 V-rated MOSFETs and electrolytic capacitors. |
Use Scenario: Input-side surge protection in -48 V telecom rectifiers exposed to AC line transients and battery backup switching events. IC Role / Device Role / Timing Role: Unidirectional TVS connected between rectified HV bus and chassis ground to divert common-mode surges. Use Value: Maintains system uptime by preventing latch-up in upstream PFC controllers during repeated 10/1000 μs surges up to 0.01% duty cycle. |
| Energy Meter Front-End | Railway Signaling Power Interface |
Use Scenario: Overvoltage hardening of metering IC supply rails in smart electricity meters subjected to grid switching transients. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after input filter but before LDO regulator to absorb residual surges passing through EMI filters. Use Value: Prevents erroneous meter readings or flash corruption by holding supply rail within ±5% tolerance during 400 V/1 A transients. |
Use Scenario: Protection of 110 V DC signaling interfaces in railway control cabinets exposed to traction return current coupling. IC Role / Device Role / Timing Role: High-VWM TVS installed across signal pair inputs to suppress differential-mode surges induced by nearby motor commutation. Use Value: Extends mean time between failures (MTBF) by eliminating false tripping of safety relays during 500 V/0.5 A transient events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ480A | Same VWM/VBR/VC ratings, identical SMB package, but rated for 600 W with 10/1000 μs waveform and JEDEC-standardized thermal test board (not minimal pad). | Higher RθJA (125 °C/W vs. 100 °C/W) reduces usable surge repetition rate in compact layouts. | Select SMBJ480A only if design uses JEDEC-standard thermal test board; otherwise P6SMB480A-M3/5B offers superior thermal performance on minimal pads. |
| 1.5SMC480A | Same electrical specs but in larger SMC (DO-214AB) package (7.11 mm × 6.22 mm), with 150 °C TJ max and 75 W/PK rating at 25 °C ambient. | Requires 40% more PCB area and lacks M3 halogen-free certification; not suitable for space-constrained or green-compliance designs. | Choose 1.5SMC480A only when higher thermal mass is needed for repetitive surge duty; P6SMB480A-M3/5B is preferred for density- and compliance-driven layouts. |
Compared with SMBJ480A and 1.5SMC480A, P6SMB480A-M3/5B delivers identical clamping performance in a smaller footprint, lower thermal resistance on minimal pads, and halogen-free compliance - making it optimal for high-density industrial power and telecom infrastructure where layout area and environmental standards are critical.
Availability
P6SMB480A-M3/5B is available at Aetrix Electronics and suitable for industrial HV DC power supplies, telecom rectifier modules, and energy meter front-ends requiring stable component supply, halogen-free compliance, and repeatable surge immunity performance.
Supply support for P6SMB480A-M3/5B 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, rectifiers, and protection devices with emphasis on reliability, precision, and automotive-grade qualification.
The P6SMB Series targets high-voltage transient suppression in industrial, telecom, and energy infrastructure, designed to replace older SMA/SMB families with improved power density, tighter VBR tolerances, and enhanced MSL/lead-free compatibility.
FAQ
What is the maximum clamping voltage of the P6SMB480A-M3/5B under rated surge conditions?
The P6SMB480A-M3/5B has a maximum clamping voltage (VC) of 658 V when subjected to its rated peak pulse current of 0.91 A using the 10/1000 μs waveform. This value is measured at the device terminals under standard test conditions (TA = 25 °C, mounted on 0.2" × 0.2" copper pads), and represents the highest voltage the protected circuit will experience during a full-rated transient event. The P6SMB480A-M3/5B maintains this clamping performance consistently across its qualified temperature range.
Is the P6SMB480A-M3/5B suitable for automotive applications?
The P6SMB480A-M3/5B is not AEC-Q101 qualified; it carries the M3 commercial-grade suffix. For automotive use, Vishay specifies variants with HE3 or HM3 suffixes and revision codes (e.g., P6SMB480AHM3_D/I), which undergo additional stress testing and lot traceability. The P6SMB480A-M3/5B is intended for industrial, telecom, and energy applications where AEC-Q101 is not mandated. Always verify qualification status via the full ordering code before automotive deployment.
How does the M3 suffix affect the P6SMB480A-M3/5B's compliance and processing?
For the P6SMB480A-M3/5B, the M3 suffix indicates halogen-free, RoHS-compliant construction meeting IPC-1752A material declarations and JEDEC J-STD-020 MSL Level 1 (260 °C peak reflow). It also confirms compliance with JESD 201 Class 2 whisker resistance. Unlike E3-suffix parts, M3 devices exclude brominated flame retardants and antimony trioxide, enabling use in environmentally regulated markets without compromising solderability or thermal robustness. The P6SMB480A-M3/5B retains all electrical specifications of its E3 counterpart.
What is the thermal resistance of the P6SMB480A-M3/5B, and how does it impact layout design?
The P6SMB480A-M3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes no additional copper pour or thermal vias. To maintain TJ ≤ 150 °C under 5.0 W steady-state dissipation, ambient temperature must remain ≤ 100 °C - or PCB layout must increase copper area/vias to reduce RθJA. The P6SMB480A-M3/5B's low RθJA enables compact placement near high-heat sources without derating.
Can the P6SMB480A-M3/5B be used in bidirectional configurations?
No - the P6SMB480A-M3/5B is a unidirectional TVS diode, identifiable by its cathode band marking. Bidirectional operation requires the CA suffix (e.g., P6SMB480CA). Using the P6SMB480A-M3/5B in reverse-biased AC applications would result in forward conduction and catastrophic failure during negative half-cycles. For bidirectional protection at ~480 V, select P6SMB480CA-M3/5B, which exhibits symmetric clamping in both polarities and omits the cathode band.
P6SMB480A-M3/5B 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:
- Active
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
P6SMB480A-M3/5B FAQ
1.How can I place an order for P6SMB480A-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB480A-M3/5B 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 P6SMB480A-M3/5B reliable?
The price and inventory of P6SMB480A-M3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB480A-M3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB480A-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB480A-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB480A-M3/5B?
P6SMB480A-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB480A-M3/5B 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 P6SMB480A-M3/5B?
For technical support, including P6SMB480A-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB480A-M3/5B requirements.
6.How does Aetrix verify that P6SMB480A-M3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB480A-M3/5B 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 P6SMB480A-M3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB480A-M3/5B?
All P6SMB480A-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB480A-M3/5B, 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 P6SMB480A-M3/5B part is unused and in its original packaging.
Return procedure for P6SMB480A-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB480A-M3/5B Tags
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Diodes Incorporated
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