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Taiwan Semiconductor Corporation P6SMB170A
- Part No.:
- P6SMB170A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB170A.pdf
- Description:
- TVS DIODE 145VWM 234VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,251
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Product details
Overview
P6SMB170A from Taiwan Semiconductor is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode with a standoff voltage of 145 V, breakdown voltage range of 162–179 V, and clamping voltage of 234 V at 2.6 A peak pulse current. 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 P6SMB170A datasheet, P6SMB170A pinout, P6SMB170A application, or P6SMB170A equivalent, key selection criteria include its DO-214AA (SMB) package compatibility, 1.0 mA test current for VBR, <1 µA reverse leakage at VWM, 10/1000 µs waveform rating, and bidirectional variant availability (P6SMB170CA).
Technical Context
The P6SMB170A operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its minimum breakdown threshold of 162 V. Its glass-passivated junction ensures stable clamping performance and low leakage (<1 µA at 145 V), while fast response time (<1.0 ps) enables effective suppression of sub-nanosecond transients.
Thermally, it features RθJC = 10 °C/W and RθJA = 55 °C/W, supporting continuous operation up to TJ = 150 °C. It meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1, enabling robust reflow compatibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 145 V - Maximum continuous reverse operating voltage before conduction begins |
| VBR (min/max) | 162 V / 179 V - Breakdown initiates within this range at 1.0 mA test current |
| VC @ IPPM | 234 V - Clamped voltage during 2.6 A 10/1000 µs surge, limiting downstream stress |
| PPPSM | 600 W - Peak pulse power handling capability under standardized surge waveform |
| IR @ VWM | <1 µA - Ultra-low leakage preserves efficiency in high-impedance bias networks |
| TJ max | 150 °C - Maximum junction temperature enabling use in thermally constrained SMB layouts |
| Package | DO-214AA (SMB) - Standardized surface-mount outline with 0.090 g mass and matte tin leads |
Pinout & Package
DO-214AA (SMB) package: molded epoxy case with cathode band marking; matte tin-plated leads compliant with J-STD-002 solderability; polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; carries full surge current during clamping |
| Cathode | Reverse-biased clamping terminal | Connected to higher-potential rail; avalanche conduction begins here when VRM exceeded |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-fast response | <1.0 ps rise time enables suppression of nanosecond-scale ESD and lightning-induced transients |
| Glass passivated junction | Stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| ISO 7637-2 compliance | Validated for Pulse 1, 2a, 2b, 3a, and 3b waveforms used in automotive and industrial power systems |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU RoHS Directive for environmentally compliant manufacturing and end-of-life handling |
| Low-profile SMB footprint | Enables automated placement and supports high-density PCB layouts without height interference |
Applications
| Switching Mode Power Supply (SMPS) | AC-DC Adapters |
|---|---|
Use Scenario: Protection of primary-side rectifier output and secondary-side DC bus against load dump and line surges. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed across bulk capacitor terminals to clamp overvoltage transients. Use Value: Limits voltage excursion to 234 V during 2.6 A 10/1000 µs surge, preventing MOSFET or controller IC damage. | Use Scenario: Input-stage surge protection in wall-mounted AC-DC adapters subject to mains-borne transients. IC Role / Device Role / Timing Role: Standoff-rated TVS connected between L/N and earth ground to divert common-mode surges. Use Value: Withstands 600 W peak pulse power and maintains <1 µA leakage at 145 V, preserving no-load efficiency. |
| Flat Panel TV Power Board | Monitor Backlight Inverter |
Use Scenario: Secondary-side rail protection in TV mainboard power distribution networks. IC Role / Device Role / Timing Role: Clamp device on 12 V or 24 V logic supply lines exposed to ESD from HDMI/USB interfaces. Use Value: Fast <1.0 ps response captures fast-rising ESD events before they propagate to SoC or memory ICs. | Use Scenario: Overvoltage suppression on CCFL or LED driver output lines susceptible to open-circuit transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed across inverter output to absorb inductive kickback energy. Use Value: 234 V clamping voltage ensures backlight controller remains within absolute maximum ratings during fault conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ170A | Same DO-214AA package; VBR = 182–201 V; VC = 274 V at 2.2 A; PPPSM = 600 W | Higher clamping voltage increases stress on downstream components; tighter VBR tolerance (±5% vs ±5.5%) | Select when tighter VBR control is required and higher clamping can be tolerated |
| 1.5SMC170A | DO-214AB (SMC) package; same VBR/VC specs; higher thermal mass (RθJA = 35 °C/W); 1.5 kW rating | Larger footprint requires PCB redesign; better thermal performance for repetitive surge duty cycles | Select when board space allows larger SMC package and enhanced thermal margin is critical |
Compared with SMBJ170A and 1.5SMC170A, the P6SMB170A offers optimal balance of compact SMB footprint, precise 145 V standoff, and 234 V clamping-making it ideal for space-constrained, single-event surge protection in consumer power electronics.
Availability
P6SMB170A is available at Aetrix Electronics and suitable for switching mode power supplies, AC-DC adapters, and flat-panel display electronics requiring stable component supply and consistent surge immunity performance.
Supply support for P6SMB170A 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 devices.
The P6SMB series belongs to TSC's industrial-grade surface-mount TVS portfolio, engineered specifically for reliable transient suppression in automotive, industrial, and consumer power conversion systems.
FAQ
What is the maximum clamping voltage of the P6SMB170A under standard surge conditions?
The P6SMB170A has a maximum clamping voltage (VC) of 234 V when subjected to its rated peak pulse current of 2.6 A using the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees predictable overvoltage limiting during transient events, ensuring protected circuitry remains within safe operating limits.
Is the P6SMB170A suitable for bidirectional transient protection?
No-the P6SMB170A is a unidirectional TVS diode. For bidirectional applications, the designated variant is P6SMB170CA, which provides symmetrical clamping in both polarities. Using P6SMB170A in reverse-biased AC circuits may result in unintended forward conduction and failure.
What is the standoff voltage (VWM) of the P6SMB170A, and why does it matter?
The standoff voltage VWM of the P6SMB170A is 145 V-this is the maximum continuous DC or RMS voltage the device can block without significant leakage. It must exceed the normal operating voltage of the protected line (e.g., 120 VAC-derived DC bus) to prevent false triggering while maintaining low leakage (<1 µA), directly impacting system efficiency and reliability.
Does the P6SMB170A meet automotive surge immunity standards?
Yes-the P6SMB170A is explicitly rated to meet ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b waveforms, making it suitable for 12 V and 24 V automotive power network protection. Its 600 W peak pulse rating, low leakage, and 150 °C junction rating align with AEC-Q101 stress test requirements for transient suppressors in vehicle ECUs and infotainment systems.
What packaging and reel quantity is offered for the P6SMB170A?
The P6SMB170A is supplied in DO-214AA (SMB) package format on 3,000-piece tape-and-reel carriers, compatible with standard SMT pick-and-place equipment. The matte tin-plated leads meet J-STD-002 solderability requirements, and the moisture sensitivity level is rated at J-STD-020 Level 1-enabling uncomplicated reflow processing without dry-packaging or baking.
P6SMB170A 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):
- 145V
- Voltage - Breakdown (Min):
- 162V
- Voltage - Clamping (Max) @ Ipp:
- 234V
- Current - Peak Pulse (10/1000µs):
- 2.6A
- 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)
P6SMB170A FAQ
1.How can I place an order for P6SMB170A through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB170A 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 P6SMB170A reliable?
The price and inventory of P6SMB170A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB170A is usually 5 days.
3.What payment methods are accepted for P6SMB170A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB170A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB170A?
P6SMB170A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB170A 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 P6SMB170A?
For technical support, including P6SMB170A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB170A requirements.
6.How does Aetrix verify that P6SMB170A is sourced from the original manufacturer or authorized distributors?
All P6SMB170A 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 P6SMB170A meets industry standards.
7.What is the process for return or replacement of P6SMB170A?
All P6SMB170A units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB170A, 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 P6SMB170A part is unused and in its original packaging.
Return procedure for P6SMB170A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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