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Taiwan Semiconductor Corporation P6SMB43
- Part No.:
- P6SMB43
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB43.pdf
- Description:
- 600W, 43V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:8,637
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Product details
Overview
P6SMB43 from Taiwan Semiconductor is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode designed for overvoltage protection in DC power lines and signal paths. It features a breakdown voltage range of 38.7–47.3 V at 1.0 mA test current, clamps to ≤61.9 V at 10.0 A peak pulse current, and maintains ≤1 µA reverse leakage at its 34.8 V stand-off voltage. It is used in switching mode power supplies, adapters, and display electronics to absorb ESD and surge transients per ISO 7637-2.
For engineers reviewing the P6SMB43 datasheet, P6SMB43 pinout, P6SMB43 application, or P6SMB43 equivalent, key selection criteria include its DO-214AA (SMB) package compatibility, unidirectional polarity marking, 150°C maximum junction temperature, and compliance with JESD201 Class 2 whisker resistance and RoHS/halogen-free requirements.
Technical Context
The P6SMB43 operates as a silicon avalanche diode with glass-passivated junction, optimized for fast response (<1.0 ps rise time from 0 V to VBR(min)) and low clamping ratio (VC/VBR ≈ 1.3–1.5). Its thermal design supports 10°C/W junction-to-case and 55°C/W junction-to-ambient resistance, enabling reliable operation under repetitive surge conditions when mounted on adequate copper area.
It meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b automotive transient immunity standards and is rated for -55°C to +150°C operating and storage temperature. The device uses matte tin-plated leads compliant with J-STD-002 solderability and J-STD-020 moisture sensitivity level 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 38.7 V / 47.3 V at 1.0 mA - defines minimum and maximum avalanche onset voltage under standardized test conditions |
| VWM | 34.8 V - maximum continuous reverse working voltage before significant leakage begins |
| IPPM | 10.0 A - peak 10/1000 µs surge current it can safely clamp without degradation |
| VC@IPPM | 61.9 V - clamped voltage during 10.0 A transient, determining protected circuit's maximum stress level |
| PPPSM | 600 W - non-repetitive peak pulse power rating for 10/1000 µs waveform |
| TJ(max) | +150 °C - maximum allowable junction temperature, limiting sustained power dissipation in high-ambient environments |
| Package | DO-214AA (SMB) - industry-standard surface-mount outline with cathode band marking and 0.090 g mass |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band; weight ≈ 0.090 g; UL 94V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; conducts during forward surge or bias |
| Cathode (marked) | Avalanche clamping terminal | Connected to higher-potential side; initiates avalanche breakdown when reverse voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Fast transient response | Typically <1.0 ps rise time from 0 V to VBR(min), enabling effective suppression of nanosecond-scale ESD events |
| Low leakage performance | ≤1 µA reverse leakage at 34.8 V (VWM), minimizing standby power loss in always-on circuits |
| Automated placement compatibility | Low-profile DO-214AA (SMB) footprint supports high-speed pick-and-place assembly without tombstoning |
| Robust surge immunity | Complies with ISO 7637-2 Pulse 1/2a/2b/3a/3b, covering load dump, supply interruption, and coupled transients in automotive ECUs |
| Reliable interconnect | Matte tin plating meets J-STD-002 solderability and JESD201 Class 2 whisker resistance for long-term field reliability |
Applications
| Switching Mode Power Supply (SMPS) | AC-DC Adapters |
|---|---|
Use Scenario: Protection of primary-side MOSFET gate drivers and secondary-side rectifier outputs against turn-off spikes and line surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed across DC bus or output rails to clamp transients before they reach downstream ICs or capacitors. Use Value: Limits voltage overshoot to ≤61.9 V during 10/1000 µs surges, preventing dielectric breakdown in 50 V-rated electrolytics and gate oxide failure in 60 V MOSFETs. | Use Scenario: Input-stage surge suppression in wall-mounted USB-C or laptop adapters exposed to mains-borne transients. IC Role / Device Role / Timing Role: Standoff-rated TVS connected between L/N and earth or across bulk capacitor terminals to shunt energy from lightning-induced surges. Use Value: Withstands 600 W peak pulses while maintaining <1 µA leakage at 34.8 V, ensuring no impact on no-load efficiency or standby power compliance. |
| Flat Panel TV Power Boards | Monitor Backlight Inverters |
Use Scenario: Protection of PFC controller ICs and main DC-DC converters against inductive kickback from relay switching and fan motor commutation. IC Role / Device Role / Timing Role: Mounted near input filter stage to clamp fast-rising transients before they propagate into control ICs or optocouplers. Use Value: Fast <1.0 ps response ensures clamping occurs before sensitive CMOS inputs exceed absolute maximum ratings, reducing field return rates due to latch-up. | Use Scenario: Output rail protection in CCFL or LED backlight inverters where transformer leakage inductance generates high-voltage ringing. IC Role / Device Role / Timing Role: Placed across inverter output to limit peak voltage seen by high-voltage MOSFETs and driver transformers. Use Value: Clamping to 61.9 V at 10 A enables use with 65 V-rated MOSFETs, eliminating need for costly 100 V devices while maintaining safety margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43A | Breakdown range 40.9–45.2 V; slightly tighter VBR tolerance and lower clamping voltage (59.3 V @ 10.6 A) | Better suited for designs requiring tighter voltage margin around 43 V nominal rails | Select SMBJ43A when clamping voltage headroom is constrained and tighter VBR distribution improves yield in high-volume production |
| 1.5SMC43A | Same VBR/VC specs but in larger DO-214AB (SMC) package; higher thermal mass and RθJA = 35°C/W | Preferred for high-temperature ambient (>85°C) or high-duty-cycle surge environments where SMB thermal limits are exceeded | Choose 1.5SMC43A when board layout allows larger footprint and thermal derating of P6SMB43 becomes limiting in enclosed enclosures |
Compared with SMBJ43A and 1.5SMC43A, the P6SMB43 offers optimal balance of compact DO-214AA footprint, 600 W surge capability, and cost-effective automated assembly-making it ideal for space-constrained consumer power supplies where thermal envelope permits SMB-level dissipation.
Availability
P6SMB43 is available at Aetrix Electronics and suitable for switching mode power supplies, AC-DC adapters, and flat-panel TV power boards requiring stable component supply and consistent surge performance across production batches.
Supply support for P6SMB43 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for industrial, computing, and consumer markets.
The P6SMB series belongs to TSC's surface-mount TVS portfolio engineered specifically for high-reliability, high-surge-capacity protection in compact power conversion systems-emphasizing fast response, low leakage, and automotive-grade transient immunity.
FAQ
What is the polarity configuration of the P6SMB43?
The P6SMB43 is a unidirectional TVS diode with cathode band marking on the DO-214AA (SMB) package. It conducts in forward bias like a standard diode and avalanches in reverse bias above its breakdown voltage. Bidirectional variants require "C" or "CA" suffixes (e.g., P6SMB43C), which are not applicable to the P6SMB43 itself.
Does the P6SMB43 meet automotive transient standards?
Yes, the P6SMB43 meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements for electrical disturbances in road vehicles. Its 600 W peak pulse power rating and sub-1.0 ps response time ensure robust suppression of load dump, supply interruption, and coupled transients commonly encountered in automotive ECU power rails.
What is the maximum clamping voltage of the P6SMB43 under surge conditions?
The P6SMB43 has a maximum clamping voltage (VC) of 61.9 V at 10.0 A peak pulse current (10/1000 µs waveform). This value is guaranteed across temperature and process variation, defining the upper voltage limit imposed on protected circuitry during worst-case transient events.
Can the P6SMB43 be used in bidirectional signal line protection?
No-the P6SMB43 is unidirectional only. For bidirectional protection (e.g., RS-485, CAN, or USB data lines), a symmetrical device such as P6SMB43C or P6SMB43CA must be selected. Using the unidirectional P6SMB43 on AC-coupled or bipolar signal paths risks forward conduction damage during negative half-cycles.
What is the thermal resistance specification for the P6SMB43?
The P6SMB43 has a junction-to-case thermal resistance (RθJC) of 10°C/W and a junction-to-ambient thermal resistance (RθJA) of 55°C/W at standard mounting conditions. These values assume PCB land pattern per TSC's suggested pad layout and define safe steady-state power dissipation limits under varying ambient temperatures.
P6SMB43 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 34.8V
- Voltage - Breakdown (Min):
- 38.7V
- Voltage - Clamping (Max) @ Ipp:
- 61.9V
- Current - Peak Pulse (10/1000µs):
- 10A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB43 FAQ
1.How can I place an order for P6SMB43 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB43 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 P6SMB43 reliable?
The price and inventory of P6SMB43 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB43 is usually 5 days.
3.What payment methods are accepted for P6SMB43?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB43 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB43?
P6SMB43 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB43 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 P6SMB43?
For technical support, including P6SMB43 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB43 requirements.
6.How does Aetrix verify that P6SMB43 is sourced from the original manufacturer or authorized distributors?
All P6SMB43 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 P6SMB43 meets industry standards.
7.What is the process for return or replacement of P6SMB43?
All P6SMB43 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB43, 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 P6SMB43 part is unused and in its original packaging.
Return procedure for P6SMB43:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB43 Tags
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