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Taiwan Semiconductor Corporation P6SMB22
- Part No.:
- P6SMB22
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB22.pdf
- Description:
- 600W, 22V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:5,944
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Product details
Overview
P6SMB22 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 19.8–24.2 V at 1.0 mA test current, a stand-off voltage of 17.8 V, clamps to ≤31.9 V at 19 A peak pulse current, and operates within –55°C to +150°C junction temperature.
For engineers reviewing the P6SMB22 datasheet, P6SMB22 pinout, P6SMB22 application, or P6SMB22 equivalent, key selection criteria include its DO-214AA (SMB) package compatibility with automated SMT lines, sub-1 ps response time, <1 µA reverse leakage above 10 V, and compliance with ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive electronics surge immunity.
Technical Context
The P6SMB22 employs a glass-passivated silicon junction optimized for fast transient suppression in low-inductance surface-mount configurations. Its unidirectional architecture provides asymmetric conduction-low forward voltage (~3.5 V at 50 A) on the anode-to-cathode path and high reverse blocking up to 17.8 V under steady-state conditions.
Thermal performance is defined by RθJC = 10°C/W and RθJA = 55°C/W, enabling reliable operation at 3 W steady-state dissipation and 600 W non-repetitive 10/1000 µs surge pulses. The device meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1 requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR Min/Max | 19.8 V / 24.2 V - Ensures consistent avalanche initiation across production lots at 1.0 mA test current |
| VWM | 17.8 V - Maximum continuous DC or RMS voltage the device blocks without significant leakage |
| IPPM | 19 A - Peak 10/1000 µs surge current it safely clamps while limiting voltage to ≤31.9 V |
| VC@IPPM | ≤31.9 V - Clamped voltage during full-rated surge, defining maximum stress on downstream circuitry |
| ID@VWM | ≤1 µA - Ultra-low leakage preserves efficiency in high-impedance bias or sensing circuits |
| TJ Max | +150°C - Enables use in thermally constrained environments such as enclosed power adapters or automotive ECUs |
| Package | DO-214AA (SMB) - Standardized 2-pin surface-mount outline with 0.090 g mass and JEDEC-compliant solderability |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, cathode band marking polarity, UL 94V-0 flammability rating, and JESD201 Class 2 whisker resistance. Weight ≈ 0.090 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connects to lower-potential side of protected rail; conducts <3.5 V drop at 50 A surge |
| Cathode | Reverse-blocking & clamping terminal | Marked with band; connects to higher-potential rail; avalanches at ≥19.8 V to shunt transients |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enhances long-term reliability and stability of VBR under thermal cycling and humidity exposure |
| Response time <1.0 ps | Enables suppression of ESD and fast-rising EFT events before sensitive ICs experience overstress |
| ISO 7637-2 compliance | Validated for automotive load-dump and switching transient immunity (Pulse 1/2a/2b/3a/3b) |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive for environmentally compliant manufacturing |
| Low-profile SMB footprint | Supports high-density PCB layouts and compatibility with standard pick-and-place equipment |
Applications
| Switching Mode Power Supply (SMPS) | AC-DC Adapters |
|---|---|
Use Scenario: Input rectifier output rail in offline flyback converters subjected to line surges and lightning-induced transients. IC Role / Device Role: Unidirectional TVS placed across bulk capacitor to clamp positive-going overvoltages exceeding 17.8 V. Use Value: Limits peak stress on primary-side controller and transformer insulation to ≤31.9 V, preventing premature failure under IEC 61000-4-5 Level 3 stress. |
Use Scenario: Secondary-side 24 V DC output line in wall-mounted adapters exposed to hot-plug and cable discharge events. IC Role / Device Role: Standoff-rated protector between regulated output and ground, absorbing 19 A 10/1000 µs pulses. Use Value: Maintains <1 µA leakage at 17.8 V, avoiding load regulation error while delivering robust 600 W transient immunity. |
| Flat Panel TV Power Board | Industrial Monitor DC Input |
Use Scenario: 24 V main power input stage of LCD TV power supply encountering repetitive motor-switching noise from backlight inverters. IC Role / Device Role: Primary overvoltage clamp on main DC bus, coordinated with upstream fuse and common-mode chokes. Use Value: Fast <1 ps response captures high-frequency ringing before it couples into video processing ICs, reducing EMI-related image artifacts. |
Use Scenario: 24 V DC input of ruggedized industrial monitor operating in factory environments with frequent relay switching and inductive load transients. IC Role / Device Role: Point-of-load TVS mounted adjacent to connector to suppress ingress surges before they reach DC-DC regulators. Use Value: DO-214AA footprint enables direct placement at board edge with minimal trace inductance, ensuring clamping voltage stays ≤31.9 V under real-world surge conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22A | Bidirectional variant with symmetric VBR (20.9–23.1 V); same 600 W rating and DO-214AA package | Required where AC-coupled signals or dual-polarity transients (e.g., RS-485 data lines) demand symmetrical clamping | Select SMBJ22A only if bidirectional protection is explicitly needed; P6SMB22 offers lower cost and tighter leakage (<1 µA vs. ~5 µA) for DC-only rails |
| 1.5SMC22A | Same VBR range and unidirectional function but in larger DO-214AB (SMC) package; 1.5 kW rating | Used when higher single-pulse energy handling (>600 W) or improved thermal dissipation is required | Choose 1.5SMC22A only if board layout allows SMC footprint and system-level testing confirms need for >600 W capability; P6SMB22 provides optimal density for space-constrained 600 W designs |
Compared with SMBJ22A and 1.5SMC22A, the P6SMB22 delivers best-in-class leakage performance and smallest PCB footprint for 600 W unidirectional DC rail protection-making it ideal for compact adapters, TV power boards, and industrial monitors where layout area and standby power loss are critical.
Availability
P6SMB22 is available at Aetrix Electronics and suitable for switching mode power supplies, AC-DC adapters, and flat-panel TV power boards requiring stable component supply, consistent parametric performance, and full RoHS/halogen-free compliance.
Supply support for P6SMB22 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 P6SMB22 belongs to TSC's P6SMBx family of 600 W surface-mount TVS diodes engineered specifically for cost-sensitive, high-volume consumer and industrial power supply applications demanding automotive-grade surge immunity and automated assembly compatibility.
FAQ
What is the breakdown voltage tolerance of the P6SMB22?
The P6SMB22 has a specified breakdown voltage range of 19.8 V to 24.2 V at 1.0 mA test current, representing a ±10% tolerance around the nominal 22 V rating. This range is verified per ANSI/IEEE C62.35 and ensures predictable clamping behavior across manufacturing lots and temperature extremes from –55°C to +150°C. The P6SMB22 maintains this specification without derating up to its maximum junction temperature.
Is the P6SMB22 suitable for automotive applications?
Yes, the P6SMB22 is suitable for automotive applications because it meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test requirements for transient immunity on 12 V and 24 V systems. Its glass-passivated junction, MSL Level 1 moisture rating, and –55°C to +150°C operating range align with AEC-Q101 stress test expectations-though formal AEC qualification requires verification by the end customer per their specific application conditions.
What is the maximum clamping voltage of the P6SMB22 under surge conditions?
The P6SMB22 has a maximum clamping voltage (VC) of 31.9 V when subjected to its rated 19 A peak pulse current (IPPM) using the standard 10/1000 µs waveform. This value is guaranteed across all units and defines the upper limit of voltage seen by downstream components during a full-rated transient event, directly informing safe operating margins for connected ICs and capacitors.
Does the P6SMB22 have a bidirectional version?
Yes-the P6SMB22A is the bidirectional counterpart, marked as LKJ, with symmetric breakdown voltages of 20.9 V to 23.1 V and identical 600 W rating and DO-214AA package. Unlike the unidirectional P6SMB22, the P6SMB22A clamps equally in both directions and is used where AC signals or bipolar transients require symmetrical protection, such as in telecom interfaces or differential bus lines.
What is the thermal resistance from junction to ambient for the P6SMB22?
The P6SMB22 has a junction-to-ambient thermal resistance (RθJA) of 55°C/W under standard JEDEC test conditions (single device on 1-inch² FR-4 board with 2 oz copper). This value assumes no additional copper pour or heatsinking; actual board-level RθJA will improve with thermal vias and copper area, enabling sustained 3 W power dissipation at ambient temperatures up to +100°C when properly laid out.
P6SMB22 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):
- 17.8V
- Voltage - Breakdown (Min):
- 19.8V
- Voltage - Clamping (Max) @ Ipp:
- 31.9V
- Current - Peak Pulse (10/1000µs):
- 19A
- 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)
P6SMB22 FAQ
1.How can I place an order for P6SMB22 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB22 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 P6SMB22 reliable?
The price and inventory of P6SMB22 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB22 is usually 5 days.
3.What payment methods are accepted for P6SMB22?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB22 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB22?
P6SMB22 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB22 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 P6SMB22?
For technical support, including P6SMB22 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB22 requirements.
6.How does Aetrix verify that P6SMB22 is sourced from the original manufacturer or authorized distributors?
All P6SMB22 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 P6SMB22 meets industry standards.
7.What is the process for return or replacement of P6SMB22?
All P6SMB22 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB22, 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 P6SMB22 part is unused and in its original packaging.
Return procedure for P6SMB22:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB22 Tags
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