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Taiwan Semiconductor Corporation P6SMB20CA
- Part No.:
- P6SMB20CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB20CA.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,626
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Product details
Overview
P6SMB20CA from Taiwan Semiconductor is a bidirectional 600W surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, with a minimum breakdown voltage of 19.0 V, maximum clamping voltage of 27.7 V at 22 A peak pulse current, and stand-off voltage of 17.1 V. It protects DC power rails 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 P6SMB20CA datasheet, P6SMB20CA pinout, P6SMB20CA application, or P6SMB20CA equivalent, this device is selected for robust bidirectional overvoltage protection where low leakage (<1 µA at 17.1 V), fast response (<1.0 ps), and UL 94V-0 compliant molding compound are required in space-constrained SMB layouts.
Technical Context
The P6SMB20CA uses a glass-passivated silicon junction to achieve stable bidirectional clamping behavior with symmetrical electrical characteristics in both polarities. Its thermal design supports 150°C maximum junction temperature and leverages a 10°C/W junction-to-case thermal resistance for reliable power dissipation during transient events.
It operates within a -55°C to +150°C storage and junction temperature range, with moisture sensitivity level 1 per J-STD-020, and meets RoHS and halogen-free requirements per IEC 61249-2-21 - making it suitable for automated SMT assembly and high-reliability consumer and industrial applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 19.0 V / 21.0 V - Ensures consistent avalanche initiation across production lots at 1 mA test current |
| VWM | 17.1 V - Maximum continuous reverse operating voltage before significant leakage begins |
| IPPM | 22 A - Peak pulse current under 10/1000 µs waveform, defining surge handling capacity |
| VC @ IPPM | 27.7 V - Clamped voltage during worst-case surge, limiting downstream component stress |
| PPPSM | 600 W - Non-repetitive peak pulse power rating, critical for automotive load dump immunity |
| ID @ VWM | <1 µA - Ultra-low reverse leakage preserves efficiency in high-impedance bias networks |
| TJ max | +150 °C - Enables operation in thermally demanding environments without derating |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, bidirectional configuration with cathode band omitted (symmetrical terminals). Matte tin-plated leads comply with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Identical bidirectional clamping behavior - either terminal serves as input or return path during surge |
| Case (body) | Thermal and mechanical interface | DO-214AA body provides 0.090 g mass and 55°C/W junction-to-ambient thermal resistance for passive cooling |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term stability of VBR and low parameter drift under thermal cycling |
| ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b) | Validated for automotive electronic module protection without external filtering components |
| Fast response time <1.0 ps | Clamps transients before sensitive ICs experience overstress - critical for USB, HDMI, and SMPS feedback paths |
| Moisture sensitivity level 1 | Enables direct placement from dry pack without baking, reducing manufacturing overhead |
| UL 94V-0 molding compound | Prevents flame propagation in end-equipment enclosures meeting IEC 62368-1 safety standards |
Applications
| Switching Mode Power Supply (SMPS) | AC-DC Adapter |
|---|---|
Use Scenario: Protection of primary-side MOSFET gate drive and secondary-side rectifier outputs against line surges and transformer ringing. IC Role / Device Role: Bidirectional TVS placed across DC bus or output capacitor to clamp transient spikes. Use Value: Limits voltage excursions to ≤27.7 V during 600 W surges, preventing MOSFET avalanche failure and electrolytic capacitor overvoltage. |
Use Scenario: Input-stage protection in universal-input 90–264 VAC adapters subject to lightning-induced surges. IC Role / Device Role: Standoff-rated TVS on bridge rectifier output to absorb differential-mode transients. Use Value: Withstands 22 A peak pulses while maintaining <1 µA leakage at 17.1 V, preserving no-load efficiency. |
| Television Power Board | Monitor Backlight Inverter |
Use Scenario: Protection of main 12 V/24 V rail feeding LED drivers and audio amplifiers against ESD and hot-swap transients. IC Role / Device Role: Low-profile SMB TVS mounted adjacent to connector inputs and DC-DC converter inputs. Use Value: 600 W rating handles repetitive 10/1000 µs surges common in broadcast environments without degradation. |
Use Scenario: Clamp overvoltage on CCFL or LED backlight boost converter outputs during lamp ignition arcs. IC Role / Device Role: Bidirectional clamping element across high-voltage AC output to suppress arc-induced spikes. Use Value: Symmetrical VBR (19.0–21.0 V) ensures equal protection during positive and negative half-cycles of inverter output. |
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 VBR (19.0–21.0 V), but higher VC = 32.4 V at 20.1 A | Higher clamping voltage reduces protection margin for 24 V systems with tight voltage tolerances | Select P6SMB20CA when clamping below 28 V is mandatory for downstream 3.3 V/5 V logic protection |
| 1.5SMC20CA (ON Semiconductor) | Same VBR/VWM, but larger DO-214AB (SMC) package (7.11 × 6.22 mm vs. 4.57 × 3.94 mm) | Requires PCB layout revision due to 2.5× larger footprint and different pad geometry | Choose P6SMB20CA for space-constrained designs where SMB footprint is fixed and thermal budget allows 600 W rating |
Compared with SMBJ20CA and 1.5SMC20CA, the P6SMB20CA delivers tighter clamping (27.7 V), smaller SMB footprint, and lower thermal resistance (10°C/W RθJC), making it optimal for compact, high-density 24 V rail protection where board area and voltage margin are critical constraints.
Availability
P6SMB20CA is available at Aetrix Electronics and suitable for switching mode power supplies, AC-DC adapters, and television power boards requiring stable component supply with full traceability and lifecycle management.
Supply support for P6SMB20CA 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, and power MOSFETs since 1979.
The P6SMB20CA belongs to TSC's P6SMBx(A) family of 600 W SMB-packaged TVS diodes, engineered for cost-effective, high-volume surge protection in consumer and industrial power electronics with emphasis on ISO 7637-2 compliance and SMT manufacturability.
FAQ
What does the 'CA' suffix indicate in P6SMB20CA?
The 'CA' suffix in P6SMB20CA denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression in both forward and reverse directions, unlike unidirectional variants (e.g., P6SMB20A) that require correct polarity orientation. This eliminates orientation errors during automated placement and simplifies circuit design for AC-coupled or floating-rail protection. The P6SMB20CA achieves this via a back-to-back diode structure inside the DO-214AA package.
What is the maximum clamping voltage of P6SMB20CA and under what test condition?
The maximum clamping voltage of P6SMB20CA is 27.7 V, measured at a peak pulse current (IPPM) of 22 A using the standardized 10/1000 µs double-exponential surge waveform. This value represents the upper limit of voltage seen by protected circuitry during worst-case transient events and is guaranteed across the full operating temperature range per the manufacturer's electrical specifications table.
Is P6SMB20CA compatible with lead-free reflow soldering processes?
Yes, P6SMB20CA is fully compatible with lead-free reflow soldering. Its matte tin-plated leads meet J-STD-002 solderability requirements, and the DO-214AA package is rated for peak reflow temperatures up to 260°C per JEDEC J-STD-020. The device has moisture sensitivity level 1, so it can be placed directly from sealed tape-and-reel packaging without pre-baking - supporting high-yield, high-throughput SMT assembly.
How does P6SMB20CA differ from the 'A' version (P6SMB20A)?
P6SMB20CA is bidirectional, while P6SMB20A is unidirectional. Their key electrical parameters differ: P6SMB20CA has symmetric VBR (19.0–21.0 V) and no polarity marking, whereas P6SMB20A has a cathode band and is intended for DC rail protection only. Additionally, P6SMB20CA exhibits identical performance in both directions - critical for protecting AC signals or floating grounds - unlike P6SMB20A, which conducts only in reverse bias.
Does P6SMB20CA meet automotive surge immunity standards?
Yes, P6SMB20CA meets ISO 7637-2 requirements for Pulse 1 (inductive load disconnect), Pulse 2a (sudden load dump interruption), Pulse 2b (supply line interruption), Pulse 3a (switching noise), and Pulse 3b (capacitive coupling noise). Its 600 W peak pulse power rating and sub-1 ps response time enable robust protection of automotive infotainment, ADAS camera modules, and body control units without additional filtering components.
P6SMB20CA 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):
- 17.1V
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 22A
- 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)
P6SMB20CA FAQ
1.How can I place an order for P6SMB20CA through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB20CA 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 P6SMB20CA reliable?
The price and inventory of P6SMB20CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB20CA is usually 5 days.
3.What payment methods are accepted for P6SMB20CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB20CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB20CA?
P6SMB20CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB20CA 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 P6SMB20CA?
For technical support, including P6SMB20CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB20CA requirements.
6.How does Aetrix verify that P6SMB20CA is sourced from the original manufacturer or authorized distributors?
All P6SMB20CA 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 P6SMB20CA meets industry standards.
7.What is the process for return or replacement of P6SMB20CA?
All P6SMB20CA units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB20CA, 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 P6SMB20CA part is unused and in its original packaging.
Return procedure for P6SMB20CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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