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Taiwan Semiconductor Corporation P6SMB27
- Part No.:
- P6SMB27
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB27.pdf
- Description:
- 600W, 27V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:4,496
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Product details
Overview
P6SMB27 from Taiwan Semiconductor is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode with a breakdown voltage range of 24.3–29.7 V, clamping voltage of 39.1 V at 16 A peak pulse current, and DO-214AA (SMB) package. It protects DC power rails in switching mode power supplies, adapters, and display electronics against ESD and surge events per ISO 7637-2.
For engineers reviewing the P6SMB27 datasheet, P6SMB27 pinout, P6SMB27 application, or P6SMB27 equivalent, key selection criteria include standoff voltage (21.8 V), clamping performance under 10/1000 µs transients, thermal resistance (55 °C/W), RoHS/halogen-free compliance, and unidirectional polarity marking for correct PCB orientation.
Technical Context
The P6SMB27 operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its minimum breakdown threshold (24.3 V) and clamping transient energy to ≤39.1 V at 16 A. Its glass-passivated junction ensures stable leakage (<1 µA at 21.8 V) and fast response (<1.0 ps rise time).
Designed for automotive and industrial environments, it meets ISO 7637-2 Pulse 1/2a/2b/3a/3b immunity requirements and supports operation from –55 °C to +150 °C junction temperature, with moisture sensitivity level 1 per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 24.3 V / 29.7 V - defines reliable conduction onset across temperature and unit variation |
| VWM | 21.8 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | 39.1 V at 16 A - clamped voltage during 10/1000 µs surge, limiting downstream IC stress |
| PPPSM | 600 W - non-repetitive peak pulse power handling capability |
| IR @ VWM | <1 µA - minimal standby leakage, critical for low-power systems |
| TJ max | +150 °C - enables use in high-ambient environments like enclosed power supplies |
| RθJA | 55 °C/W - thermal resistance from junction to ambient, informs heatsinking needs on standard FR-4 |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, single-diode configuration with cathode band marking. Matte tin-plated leads, UL 94V-0 molding compound, 0.090 g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse surge return path | Connected to protected circuit ground or low-side rail; polarity must match cathode band orientation |
| Cathode | Reverse-biased terminal / Clamping node | Connected to line being protected (e.g., +12 V rail); conducts avalanche current during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Fast response time | <1.0 ps - enables suppression of nanosecond-scale ESD events before system damage occurs |
| Glass passivated junction | Stable VBR tolerance and long-term reliability under thermal cycling and humidity |
| ISO 7637-2 compliance | Validated for automotive load-dump and inductive-switching transients (Pulse 1/2a/2b/3a/3b) |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing |
| Low profile SMB package | Enables automated SMT placement and fits space-constrained board layouts (typ. 4.5 × 3.9 mm footprint) |
Applications
| Switching Mode Power Supply (SMPS) | AC-DC Adapter |
|---|---|
Use Scenario: Input rectifier output rail protection against line surges and MOSFET switching spikes. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient energy between bulk capacitor and primary-side controller. Use Value: Limits voltage overshoot to ≤39.1 V during 10/1000 µs pulses, preventing controller latch-up or gate oxide failure. | Use Scenario: Secondary-side DC output rail protection in wall-mounted adapters exposed to user-induced ESD and cable coupling. IC Role / Device Role / Timing Role: Standoff-rated (21.8 V) clamping device placed adjacent to USB or barrel-jack output terminals. Use Value: Sub-1 µA leakage preserves no-load efficiency; 600 W rating absorbs multiple 1 kV/500 Ω contact ESD strikes. |
| Television Power Board | Monitor Backlight Inverter |
Use Scenario: Protection of main 24 V or 48 V logic supply rails against inductive kickback from relay or fan drivers. IC Role / Device Role / Timing Role: Fast-acting shunt element parallel to microcontroller or PMIC input pins. Use Value: 39.1 V clamping ensures downstream 3.3 V/5 V regulators remain within absolute maximum ratings during 100 A surge events. | Use Scenario: DC bus protection in CCFL or LED backlight inverters subject to transformer flyback transients. IC Role / Device Role / Timing Role: Primary-side TVS on high-voltage DC link (e.g., 60–100 V) to limit ringing amplitude. Use Value: 24.3–29.7 V VBR range provides margin above nominal rail while enabling rapid turn-on before semiconductor failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ27A | Bi-directional variant; symmetric VBR (25.7–28.4 V), same VC (37.5 V) and PPPSM (600 W) | Required where AC-coupled or bidirectional signal lines need protection (e.g., RS-485, CAN bus) | Select P6SMB27 for DC rails with defined polarity; SMBJ27A only if reverse polarity events must also be suppressed |
| 1.5SMC27 | Larger DO-214AB (SMC) package; identical electrical specs but higher RθJA (40 °C/W) and 1.5× footprint area | Suitable where board space allows larger package and higher thermal mass is preferred | P6SMB27 offers tighter layout fit and better compatibility with fine-pitch SMT assembly; 1.5SMC27 preferred for higher sustained power dissipation |
Compared with SMBJ27A and 1.5SMC27, the P6SMB27 delivers identical surge robustness in a smaller DO-214AA footprint and unidirectional configuration-ideal for cost-sensitive, space-constrained DC power protection where polarity is fixed and bidirectional clamping is unnecessary.
Availability
P6SMB27 is available at Aetrix Electronics and suitable for switching mode power supplies, AC-DC adapters, and television power boards requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P6SMB27 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, serving global industrial, computing, and consumer markets since 1979.
The P6SMB27 belongs to TSC's P6SMB series of 600 W surface-mount TVS diodes, engineered specifically for robust transient immunity in automotive-grade power conversion and consumer electronics applications.
FAQ
What is the breakdown voltage range of the P6SMB27?
The P6SMB27 has a guaranteed breakdown voltage range of 24.3 V to 29.7 V at 1.0 mA test current, measured per ANSI/IEEE C62.35. This range accounts for process variation and ensures reliable turn-on across temperature and unit-to-unit spread. The P6SMB27 maintains this specification under standard test conditions (TA = 25 °C) and is validated across its full operating junction temperature range (–55 °C to +150 °C).
Is the P6SMB27 unidirectional or bidirectional?
The P6SMB27 is a unidirectional TVS diode, indicated by the absence of "C" or "CA" suffix. It conducts only in reverse bias (cathode positive) and must be oriented with the cathode band toward the protected line. Bidirectional variants such as P6SMB27A exist but are distinct part numbers-not interchangeable with the P6SMB27 without circuit review.
What is the maximum clamping voltage of the P6SMB27 under surge conditions?
The P6SMB27 clamps to a maximum of 39.1 V when subjected to a 10/1000 µs waveform peak pulse current of 16 A. This value is specified in the Electrical Specifications table and represents worst-case voltage seen by downstream components during standardized surge testing. It is measured at TA = 25 °C and derates predictably with increasing ambient temperature per Fig.2 in the datasheet.
Does the P6SMB27 meet automotive transient immunity standards?
Yes, the P6SMB27 meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements for automotive electrical systems. Its 600 W peak pulse power rating, fast <1.0 ps response, and stable clamping behavior under repetitive surge stress make it suitable for protecting ECUs, body control modules, and infotainment power rails-provided layout and grounding follow best practices for transient suppression.
What is the thermal resistance of the P6SMB27, and how does it affect PCB layout?
The P6SMB27 has a junction-to-ambient thermal resistance (RθJA) of 55 °C/W on standard FR-4 with typical 1 oz copper. This means a 1 W steady-state dissipation raises junction temperature by 55 °C above ambient. For transient-only use (e.g., ESD), thermal design is less critical-but for repeated surges or elevated ambient temperatures, adding thermal relief pads or local copper pours improves reliability. The DO-214AA package limits heat spreading compared to larger SMC alternatives.
P6SMB27 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):
- 21.8V
- Voltage - Breakdown (Min):
- 24.3V
- Voltage - Clamping (Max) @ Ipp:
- 39.1V
- Current - Peak Pulse (10/1000µs):
- 16A
- 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)
P6SMB27 FAQ
1.How can I place an order for P6SMB27 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB27 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 P6SMB27 reliable?
The price and inventory of P6SMB27 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB27 is usually 5 days.
3.What payment methods are accepted for P6SMB27?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB27 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB27?
P6SMB27 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB27 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 P6SMB27?
For technical support, including P6SMB27 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB27 requirements.
6.How does Aetrix verify that P6SMB27 is sourced from the original manufacturer or authorized distributors?
All P6SMB27 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 P6SMB27 meets industry standards.
7.What is the process for return or replacement of P6SMB27?
All P6SMB27 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB27, 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 P6SMB27 part is unused and in its original packaging.
Return procedure for P6SMB27:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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