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Taiwan Semiconductor Corporation P6SMB15
- Part No.:
- P6SMB15
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB15.pdf
- Description:
- 600W, 15V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:5,239
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Product details
Overview
P6SMB15 from Taiwan Semiconductor is a unidirectional 600W surface-mount Transient Voltage Suppressor (TVS) diode designed for primary-side overvoltage protection in DC power rails. It features a breakdown voltage range of 13.5–16.5 V at 1.0 mA test current, clamps to ≤22.0 V at 28 A peak pulse current, and maintains ≤1 µA reverse leakage at its 12.1 V stand-off voltage - enabling robust surge suppression in compact AC/DC adapters and industrial power supplies.
For engineers reviewing the P6SMB15 datasheet, P6SMB15 pinout, P6SMB15 application, or P6SMB15 equivalent, this device is evaluated for IEC 61000-4-2 ESD and ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, thermal derating above 25°C, and DO-214AA (SMB) PCB layout compatibility with automated placement and J-STD-002 solderability requirements.
Technical Context
The P6SMB15 operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its minimum breakdown threshold of 13.5 V. Its glass-passivated junction ensures stable VBR tolerance (±10% typical), low temperature coefficient (0.084 %/°C), and fast response (<1.0 ps rise time from 0 V to VBR min).
It delivers 600 W non-repetitive peak pulse power under 10/1000 µs waveform, with thermal resistance RθJC = 10 °C/W and RθJA = 55 °C/W - supporting operation up to +150 °C junction temperature and requiring minimal heatsinking in SMB footprint-constrained designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 13.5 V / 16.5 V at 1.0 mA - defines reliable turn-on window for overvoltage detection without false triggering |
| VWM | 12.1 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | ≤22.0 V at 28 A - clamping voltage limiting downstream IC stress during 10/1000 µs transients |
| PPPSM | 600 W - peak pulse power handling per single transient event per IEC/ISO standards |
| IR @ VWM | ≤1 µA - ultra-low leakage preserving efficiency in high-impedance bias networks |
| TJ max | +150 °C - enables use in thermally demanding environments like enclosed power adapters |
| Package | DO-214AA (SMB) - industry-standard 2-pin surface-mount outline with 0.090 g mass and J-STD-020 Level 1 moisture rating |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, cathode band marking polarity, UL 94V-0 flammability rating, and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path / low-impedance return during clamping | Connected to system ground or low-side reference; carries full IPPM during transient |
| Cathode | Protected line input / high-side connection point | Connected to rail under protection (e.g., +12 V input); reverse-biased during normal operation |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term VBR stability and reduced parameter drift across temperature and life cycles |
| Clamping ratio (VC/VBR) | ≤1.63 - tight ratio minimizes overvoltage margin required for protected ICs (e.g., controllers, MOSFET gates) |
| Response time | <1.0 ps - enables suppression of nanosecond-scale ESD and switching noise before sensitive nodes are stressed |
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line spikes) - critical for automotive-adjacent power modules |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS directives - supports green manufacturing and end-of-life compliance |
Applications
| AC/DC Power Adapters | Industrial SMPS Inputs |
|---|---|
|
Use Scenario: Protecting secondary-side 12 V DC output rails against load-dump transients and ESD events during hot-plug connector mating. IC Role / Device Role: Unidirectional TVS placed between output rail and ground, absorbing energy before it reaches downstream regulators or USB-PD controllers. Use Value: Clamps to ≤22.0 V at 28 A, ensuring connected devices remain within absolute maximum ratings even during 600 W surges. |
Use Scenario: Safeguarding primary-side DC bus (e.g., 12–24 V intermediate rail) in programmable logic controller (PLC) power modules exposed to relay coil flyback and field wiring surges. IC Role / Device Role: Standoff-rated TVS on input stage, leveraging 12.1 V VWM to avoid conduction during nominal operation while responding to >13.5 V faults. Use Value: Withstands repeated 10/1000 µs pulses per ISO 7637-2 Pulse 1, reducing need for redundant protection stages. |
| Consumer Monitor Power Supplies | Automotive Infotainment DC-DC Inputs |
|
Use Scenario: Suppressing switching noise and ESD from HDMI/USB interface coupling into internal 12 V supply rails of LCD monitor mainboards. IC Role / Device Role: Localized TVS mounted adjacent to DC-DC converter IC inputs, minimizing trace inductance for optimal clamping speed. Use Value: Sub-1 ps response and DO-214AA footprint enable placement directly at IC pins without compromising board space. |
Use Scenario: Protecting 12 V input to buck converters powering infotainment head units subjected to battery line transients during cold-crank or alternator load dump. IC Role / Device Role: Primary overvoltage clamp on vehicle battery feed, rated for ISO 7637-2 Pulse 2b (supply interruption) and Pulse 3b (capacitive coupling). Use Value: 600 W peak power rating and +150 °C TJ support operation in under-hood ambient conditions without thermal derating penalties. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A (Bourns) | Bidirectional variant; VBR = 16.7–18.5 V; VC = 24.4 V @ 24.4 A; same DO-214AA package | Required where bidirectional line protection (e.g., data lines, AC-coupled rails) is needed - not suitable for unidirectional DC rail clamping without redesign | Select P6SMB15 when unidirectional clamping with tighter VC (22.0 V) and lower VBR (13.5–16.5 V) is critical for margin-constrained 12 V systems. |
| 1.5SMC15A (ON Semiconductor) | Same unidirectional function; VBR = 14.3–15.8 V; VC = 22.5 V @ 26.7 A; DO-214AB (SMC) package (larger footprint) | Requires PCB layout change due to SMC body size (7.11 × 6.22 mm vs SMB's 4.57 × 3.94 mm); higher thermal mass but less space-efficient | Choose P6SMB15 for space-constrained designs where SMB footprint and 0.090 g mass are essential - e.g., slim-profile adapters or multi-rail PMIC boards. |
Compared with SMBJ15A and 1.5SMC15A, the P6SMB15 offers the lowest clamping voltage (22.0 V) in the smallest standard package (DO-214AA), making it optimal for 12 V rail protection where board area and voltage margin are simultaneously constrained.
Availability
P6SMB15 is available at Aetrix Electronics and suitable for AC/DC adapters, industrial SMPS inputs, and consumer monitor power supplies requiring stable component supply, consistent parametric performance, and full traceability through J-STD-020 Level 1 moisture-sensitive handling.
Supply support for P6SMB15 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, MOSFETs, and power management components since 1979.
The P6SMB series belongs to TSC's high-reliability surface-mount TVS portfolio, engineered specifically for cost-sensitive yet standards-compliant surge protection in consumer, industrial, and automotive-adjacent power systems.
FAQ
What is the polarity configuration of the P6SMB15?
The P6SMB15 is a unidirectional TVS diode, with cathode marked by a band on the DO-214AA (SMB) package body. It conducts only during reverse overvoltage events - forward voltage drop is 3.5 V at 50 A, per datasheet Note 2 - and must be oriented with cathode toward the protected line and anode to ground.
Does the P6SMB15 meet automotive transient immunity standards?
Yes, the P6SMB15 meets ISO 7637-2 Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) requirements as stated in the official Taiwan Semiconductor Q2209 datasheet - making it suitable for automotive infotainment and body electronics power inputs.
What is the maximum clamping voltage of the P6SMB15 under surge conditions?
The P6SMB15 has a maximum clamping voltage (VC) of 22.0 V when subjected to its rated peak pulse current of 28 A under the standard 10/1000 µs waveform. This value is guaranteed across temperature and lifetime per the manufacturer's electrical specifications table.
Can the P6SMB15 be used in bidirectional signal line protection?
No - the P6SMB15 is strictly unidirectional. For bidirectional protection (e.g., RS-485, CAN, or AC-coupled lines), Taiwan Semiconductor specifies C or CA suffix variants such as P6SMB15CA. Using P6SMB15 on bidirectional lines risks forward conduction and failure during normal signal swing.
What is the thermal resistance and maximum junction temperature of the P6SMB15?
The P6SMB15 has a junction-to-case thermal resistance (RθJC) of 10 °C/W and junction-to-ambient (RθJA) of 55 °C/W. Its absolute maximum junction temperature is +150 °C, allowing reliable operation in enclosed power adapters and industrial enclosures without forced airflow.
P6SMB15 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):
- 12.1V
- Voltage - Breakdown (Min):
- 13.5V
- Voltage - Clamping (Max) @ Ipp:
- 22V
- Current - Peak Pulse (10/1000µs):
- 28A
- 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)
P6SMB15 FAQ
1.How can I place an order for P6SMB15 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB15 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 P6SMB15 reliable?
The price and inventory of P6SMB15 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB15 is usually 5 days.
3.What payment methods are accepted for P6SMB15?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB15 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB15?
P6SMB15 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB15 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 P6SMB15?
For technical support, including P6SMB15 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB15 requirements.
6.How does Aetrix verify that P6SMB15 is sourced from the original manufacturer or authorized distributors?
All P6SMB15 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 P6SMB15 meets industry standards.
7.What is the process for return or replacement of P6SMB15?
All P6SMB15 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB15, 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 P6SMB15 part is unused and in its original packaging.
Return procedure for P6SMB15:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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