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Vishay General Semiconductor - Diodes Division P6SMB540A-M3/5B
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- Part No.:
- P6SMB540A-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB540A-M3/5B.pdf
- Description:
- TVS DIODE 459VWM 740VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,345
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Product details
Overview
P6SMB540A-M3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, rated for 540 V breakdown voltage (VBR = 513–567 V at IT = 1.0 mA), 600 W peak pulse power (10/1000 µs), and clamping voltage of 740 V at IPPM. It protects high-voltage DC rails-such as industrial power supplies, telecom rectifier outputs, and photovoltaic string interfaces-against lightning-induced surges and switching transients.
For engineers reviewing the P6SMB540A-M3/5B datasheet, P6SMB540A-M3/5B pinout, P6SMB540A-M3/5B application, or P6SMB540A-M3/5B equivalent, this part delivers verified clamping performance at 540 V standoff, halogen-free RoHS compliance (M3 suffix), AEC-Q101 qualification (via HM3_D variant), and validated thermal resistance (RθJA = 100 °C/W) on standard 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates in avalanche breakdown mode to clamp transient overvoltages above its reverse standoff voltage (VWM = 459 V). Its glass-passivated junction ensures stable VBR tolerance (±5 %) and low leakage (<1.0 µA at VWM) across -65 °C to +150 °C junction temperature range.
Designed for unidirectional surge suppression only, it features a cathode band marking, 100 A non-repetitive forward surge rating (IFSM, 8.3 ms half-sine), and meets J-STD-020 MSL Level 1 with 260 °C reflow peak. The SMB package supports automated placement and provides 600 W pulse handling without derating up to TA = 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 513 V / 567 V at IT = 1.0 mA - defines precise avalanche onset window for reliable clamping threshold |
| VWM | 459 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 740 V at IPPM - clamped voltage during 600 W transient, limiting stress on downstream components |
| PPPM | 600 W (10/1000 µs waveform) - peak surge energy absorption capability under standardized lightning test condition |
| IPPM | 0.81 A - peak pulse current corresponding to 600 W clamping at 740 V, critical for PCB trace sizing |
| RθJA | 100 °C/W - thermal resistance from junction to ambient, used to calculate max safe power dissipation at elevated ambient temps |
| TJ max | +150 °C - maximum junction temperature, enabling operation in high-temperature industrial enclosures |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant (M3 suffix), matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode marked by band; anode unmarked.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts avalanche current to ground during overvoltage events |
| Anode (unmarked end) | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV line-earth) in high-voltage DC systems |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving clamping accuracy and downstream IC survivability |
| Glass passivated junction | Ensures long-term parameter stability and low leakage drift over temperature and lifetime |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free assembly without moisture sensitivity concerns or baking requirements |
| AEC-Q101 qualified variant available (HM3_D) | Validates reliability for automotive high-voltage subsystems including battery management and DC-DC converters |
Applications
| Industrial Power Supply Output Protection | Telecom Rectifier Surge Clamping |
|---|---|
Use Scenario: Protecting 48 V–600 V DC output rails of switch-mode power supplies against load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS placed between output rail and chassis ground to clamp transients exceeding VWM. Use Value: Limits voltage excursion to ≤740 V during 600 W surges, preventing damage to downstream regulators and isolation barriers. |
Use Scenario: Safeguarding telecom rectifier modules feeding -48 V DC distribution systems against lightning-induced common-mode surges. IC Role / Device Role / Timing Role: High-VBR TVS connected across output terminals to suppress differential-mode transients on DC bus lines. Use Value: Maintains system uptime by absorbing 10/1000 µs surges without degradation, meeting GR-1089-CORE immunity requirements. |
| Photovoltaic String Overvoltage Protection | High-Voltage Sensor Interface Guarding |
Use Scenario: Clamping open-circuit voltages in solar PV strings (up to 1000 V) during rapid irradiance changes or arc-fault events. IC Role / Device Role / Timing Role: Standoff-rated TVS installed across string terminals to limit transient overvoltage before inverter input stage. Use Value: Prevents insulation breakdown and arcing by clamping transients to 740 V while sustaining 459 V continuous DC blocking. |
Use Scenario: Shielding precision analog front-ends (e.g., current shunt monitors, HV ADC inputs) in motor drives from gate-drive coupling noise. IC Role / Device Role / Timing Role: Fast-response TVS placed at sensor input pins to divert ESD and fast-rising transients before signal conditioning circuitry. Use Value: Preserves measurement integrity by limiting transient amplitude to <740 V within <1 ns response time, avoiding latch-up or parametric shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ540A | Same VBR range (513–567 V), identical SMB package, but rated for 600 W with tighter VC spec (725 V max); lower RθJA (85 °C/W) | Preferred where lower clamping voltage or improved thermal margin is required in space-constrained layouts | Select SMBJ540A when board-level thermal management is limited and sub-730 V clamping is mandatory |
| 1.5SMC540A | Higher power rating (1500 W), larger SMC (DO-214AB) package, same VBR/VWM; requires larger PCB footprint and different pad layout | Suitable for primary-side AC/DC surge protection or higher-energy threat environments (e.g., outdoor telecom cabinets) | Choose 1.5SMC540A only if system-level testing confirms need for >600 W pulse handling and SMC mounting is acceptable |
Compared with SMBJ540A, P6SMB540A-M3/5B offers halogen-free compliance and AEC-Q101 availability (HM3_D), while 1.5SMC540A trades compactness for higher energy capacity-making P6SMB540A-M3/5B optimal for cost- and space-sensitive 600 W industrial DC protection.
Availability
P6SMB540A-M3/5B is available at Aetrix Electronics and suitable for industrial power supply output protection, telecom rectifier surge clamping, and photovoltaic string overvoltage protection requiring stable component supply, halogen-free compliance, and AEC-Q101-qualified alternatives.
Supply support for P6SMB540A-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 designs and manufactures discrete semiconductors-including diodes, MOSFETs, and TVS devices-with emphasis on reliability, efficiency, and application-specific performance.
The P6SMB Series targets cost-effective, high-energy transient suppression in surface-mount industrial, telecom, and renewable energy systems, balancing robust surge handling with compact SMB packaging and automated assembly compatibility.
FAQ
What is the maximum clamping voltage of P6SMB540A-M3/5B under a 600 W transient?
The P6SMB540A-M3/5B has a maximum clamping voltage (VC) of 740 V when subjected to its rated 600 W peak pulse power with a 10/1000 µs waveform. This value is measured at the specified peak pulse current (IPPM = 0.81 A) and ensures downstream components experience no more than 740 V during standardized surge events. The P6SMB540A-M3/5B maintains this clamping performance across its full operating temperature range.
Is P6SMB540A-M3/5B suitable for automotive applications?
The base P6SMB540A-M3/5B is commercial-grade, but Vishay offers the AEC-Q101-qualified variant P6SMB540AHM3_D/I for automotive use. That part shares identical electrical specs-including VBR, VWM, and VC-but undergoes additional stress testing per AEC-Q101. For automotive high-voltage subsystems like 48 V mild-hybrid DC-DC converters, specify the HM3_D suffix version; P6SMB540A-M3/5B itself is not AEC-Q101 certified.
What does the "M3/5B" suffix indicate in P6SMB540A-M3/5B?
In P6SMB540A-M3/5B, "M3" denotes halogen-free, RoHS-compliant construction with JESD 201 Class 2 whisker resistance, while "5B" specifies packaging in a 13-inch diameter plastic tape-and-reel format containing 3200 units. This differs from "52" (7-inch reel, 750 units) and enables high-volume SMT line feeding. The "A" suffix confirms unidirectional polarity with cathode band marking.
How does P6SMB540A-M3/5B compare to bidirectional TVS diodes like P6SMB540CA?
P6SMB540A-M3/5B is unidirectional and designed for DC line-to-ground protection, whereas P6SMB540CA is bidirectional for AC or dual-polarity DC applications. The unidirectional P6SMB540A-M3/5B provides lower leakage (<1.0 µA at VWM) and higher VBR symmetry tolerance than its bidirectional counterpart. Use P6SMB540A-M3/5B where polarity is fixed and leakage sensitivity matters; choose P6SMB540CA only for symmetrical transient suppression on floating or AC-coupled lines.
What PCB pad layout is recommended for optimal thermal performance of P6SMB540A-M3/5B?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad area per terminal for P6SMB540A-M3/5B to achieve the published RθJA of 100 °C/W. Reducing pad size increases thermal resistance and reduces safe power handling. The datasheet also recommends using internal ground planes and thermal vias beneath pads for enhanced heat spreading-especially critical when operating near the 5.0 W steady-state power limit or in high-ambient environments.
P6SMB540A-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):
- 459V
- Voltage - Breakdown (Min):
- 513V
- Voltage - Clamping (Max) @ Ipp:
- 740V
- Current - Peak Pulse (10/1000µs):
- 810mA
- 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)
P6SMB540A-M3/5B FAQ
1.How can I place an order for P6SMB540A-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB540A-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 P6SMB540A-M3/5B reliable?
The price and inventory of P6SMB540A-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 P6SMB540A-M3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB540A-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB540A-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB540A-M3/5B?
P6SMB540A-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB540A-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 P6SMB540A-M3/5B?
For technical support, including P6SMB540A-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB540A-M3/5B requirements.
6.How does Aetrix verify that P6SMB540A-M3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB540A-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 P6SMB540A-M3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB540A-M3/5B?
All P6SMB540A-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB540A-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 P6SMB540A-M3/5B part is unused and in its original packaging.
Return procedure for P6SMB540A-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB540A-M3/5B Tags
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