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Taiwan Semiconductor Corporation P6SMB20C
- Part No.:
- P6SMB20C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB20C.pdf
- Description:
- 600W, 20V, 10%, BIDIRECTIONAL, T
- Quantity:
- Payment:
- Shipping:
Inventory:3,883
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Product details
Overview
P6SMB20C from Taiwan Semiconductor is a bidirectional 600W surface-mount transient voltage suppressor (TVS) diode with a standoff voltage of 17.1 V, breakdown voltage range of 19.0–21.0 V at 1 mA, and clamping voltage of 27.7 V at 22 A peak pulse current. It protects DC power rails and signal lines in switching mode power supplies, adapters, and display electronics against ESD and surge events per ISO 7637-2 Pulse 1/2a/2b/3a/3b.
For engineers reviewing the P6SMB20C datasheet, P6SMB20C pinout, P6SMB20C application, or P6SMB20C equivalent, this device is selected for robust unidirectional/bidirectional surge protection where low leakage (<1 µA @ 17.1 V), fast response (<1.0 ps), and DO-214AA package compatibility are critical in space-constrained industrial and consumer power systems.
Technical Context
The P6SMB20C is a bipolar (bidirectional) TVS diode built using glass-passivated silicon junction technology, enabling symmetrical clamping in both polarities without external polarity management. Its 10/1000 µs waveform rating supports automotive load-dump and inductive-switching surge immunity.
Thermal performance is defined by RθJC = 10 °C/W and RθJA = 55 °C/W, allowing reliable operation up to TJ = 150 °C. The device meets J-STD-020 moisture sensitivity level 1 and JESD 201 class 2 whisker resistance requirements for automated SMT assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17.1 V - Maximum continuous reverse working voltage before significant leakage begins; sets upper limit for protected circuit DC bias. |
| VBR (min/max) | 19.0 / 21.0 V @ 1 mA - Breakdown occurs within this range; ensures predictable clamping onset across production lots. |
| VC @ IPPM | 27.7 V @ 22 A - Clamped voltage during 10/1000 µs surge; defines worst-case overvoltage seen by downstream ICs. |
| PPPSM | 600 W - Peak pulse power handling capability; determines survivability under standardized surge waveforms. |
| IR @ VWM | <1 µA - Ultra-low reverse leakage preserves efficiency in high-impedance sensing or battery-powered circuits. |
| TJ max | 150 °C - Maximum junction temperature; enables use in thermally demanding environments like enclosed power adapters. |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, bi-directional configuration with cathode band omitted (symmetrical terminals). Matte tin-plated leads, RoHS and halogen-free compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically in bidirectional mode; no polarity marking required-enables flexible PCB layout and eliminates orientation errors during placement. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR and low leakage over lifetime and temperature cycling, critical for long-term reliability in industrial equipment. |
| ISO 7637-2 compliance | Validated for automotive electrical system transients (Pulse 1/2a/2b/3a/3b), enabling direct use in vehicle accessory power modules without additional filtering. |
| Fast response time <1.0 ps | Clamps ESD events before sensitive logic or analog inputs are damaged-essential for USB, HDMI, and front-panel interface protection. |
| DO-214AA (SMB) footprint | Standardized 4.58 × 3.94 mm outline compatible with high-volume SMT lines and reflow profiles per J-STD-020 Level 1. |
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: Bidirectional voltage clamp placed across input bulk capacitor or output rail to limit transient overvoltage. Use Value: Prevents MOSFET avalanche failure and output capacitor overvoltage stress during 600W surge events with <27.7 V clamping ceiling. | Use Scenario: Input-stage surge suppression in universal-input wall adapters for consumer electronics. IC Role / Device Role / Timing Role: Standoff-rated TVS placed between AC input bridge output and primary ground to absorb differential-mode surges. Use Value: Maintains <1 µA leakage at 17.1 V, minimizing standby power loss while surviving 10/1000 µs 600W pulses per IEC 61000-4-5. |
| Television Power Boards | Monitor Backlight Inverters |
Use Scenario: DC bus protection on mainboard power distribution networks exposed to hot-swap and cable discharge events. IC Role / Device Role / Timing Role: Clamp element across +12V or +24V rails feeding audio/video processing ICs and memory subsystems. Use Value: Limits transient overshoot to ≤27.7 V during ESD contact discharge, preventing latch-up in SoCs and DDR controllers. | Use Scenario: Surge suppression on CCFL or LED backlight driver outputs subject to inductive kickback and open-circuit arcing. IC Role / Device Role / Timing Role: Bidirectional TVS connected between inverter output and ground to clamp both positive and negative flyback spikes. Use Value: Symmetrical 19.0–21.0 V breakdown ensures balanced clamping regardless of inverter polarity reversal, extending lamp driver IC lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20CA (Bourns) | Same DO-214AA package, identical VWM/VBR/VC specs, but rated for 600W with tighter VBR tolerance (±5% vs ±5.3% for P6SMB20C). | No functional difference in SMPS or adapter designs; validated for same ISO 7637-2 pulses. | Select SMBJ20CA when tighter parametric consistency across temperature is required for automotive-grade qualification. |
| 1.5SMC20CA (ON Semiconductor) | Same electrical specs and DO-214AB (SMC) package-larger footprint (7.11 × 6.22 mm) and higher thermal mass (RθJA = 35 °C/W). | Requires PCB layout change; better suited for high-reliability industrial systems needing enhanced thermal margin. | Choose 1.5SMC20CA only if board area permits larger package and junction temperature must stay below 125 °C under sustained 3 W dissipation. |
Compared with SMBJ20CA and 1.5SMC20CA, the P6SMB20C offers identical surge protection performance in the smallest DO-214AA footprint, optimized for cost-sensitive, space-constrained consumer power designs requiring full ISO 7637-2 compliance without layout revision.
Availability
P6SMB20C is available at Aetrix Electronics and suitable for switching mode power supplies, AC-DC adapters, and television power boards requiring stable component supply, consistent parametric performance, and RoHS/halogen-free compliance.
Supply support for P6SMB20C 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 Company (TSC) is a vertically integrated Taiwanese manufacturer specializing in discrete semiconductors, including TVS diodes, rectifiers, and MOSFETs, with ISO 9001 and IATF 16949 certification.
The P6SMB series is part of TSC's surface-mount TVS platform designed specifically for high-power, automotive-grade transient suppression in compact consumer and industrial power systems.
FAQ
What is the polarity configuration of the P6SMB20C?
The P6SMB20C is a bidirectional TVS diode, meaning it provides symmetrical clamping in both forward and reverse directions. Unlike unidirectional variants (e.g., P6SMB20A), it has no cathode marking and functions identically across both terminals-ideal for AC-coupled or polarity-agnostic protection points such as Ethernet PHY interfaces or transformer-isolated rails.
Does the P6SMB20C meet automotive surge immunity standards?
Yes, the P6SMB20C meets ISO 7637-2 requirements for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling), making it suitable for automotive body control modules, infotainment power supplies, and accessory adapters where certified transient immunity is mandatory.
What is the maximum clamping voltage of the P6SMB20C under surge conditions?
The P6SMB20C has a maximum clamping voltage (VC) of 27.7 V at 22 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is guaranteed across temperature and production lot, ensuring downstream components see no more than 27.7 V during a 600W transient event.
Can the P6SMB20C be used in place of a unidirectional TVS like P6SMB20A?
No-the P6SMB20C is bidirectional and lacks polarity marking, whereas P6SMB20A is unidirectional with a defined cathode band. Substituting P6SMB20C for P6SMB20A in DC-only applications may cause unintended conduction; always verify circuit topology and polarity requirements before replacement.
What is the thermal resistance profile of the P6SMB20C?
The P6SMB20C has a junction-to-case thermal resistance (RθJC) of 10 °C/W and junction-to-ambient resistance (RθJA) of 55 °C/W under standard JEDEC test conditions. These values enable safe operation at full 600W pulse power in ambient temperatures up to 85 °C when mounted on 1-in² 2-oz copper with two thermal vias.
P6SMB20C 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 16.2V
- Voltage - Breakdown (Min):
- 18V
- Voltage - Clamping (Max) @ Ipp:
- 29.1V
- Current - Peak Pulse (10/1000µs):
- 21A
- 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)
P6SMB20C FAQ
1.How can I place an order for P6SMB20C through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB20C 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 P6SMB20C reliable?
The price and inventory of P6SMB20C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB20C is usually 5 days.
3.What payment methods are accepted for P6SMB20C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB20C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB20C?
P6SMB20C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB20C 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 P6SMB20C?
For technical support, including P6SMB20C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB20C requirements.
6.How does Aetrix verify that P6SMB20C is sourced from the original manufacturer or authorized distributors?
All P6SMB20C 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 P6SMB20C meets industry standards.
7.What is the process for return or replacement of P6SMB20C?
All P6SMB20C units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB20C, 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 P6SMB20C part is unused and in its original packaging.
Return procedure for P6SMB20C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB20C Tags
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