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Taiwan Semiconductor Corporation P6SMB22CA
- Part No.:
- P6SMB22CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB22CA.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,466
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Product details
Overview
P6SMB22CA from Taiwan Semiconductor is a bidirectional 600W surface-mount transient voltage suppressor (TVS) diode with a breakdown voltage range of 19.8V to 24.2V, clamping voltage of 31.9V at 19A 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 Pulse 1/2a/2b/3a/3b.
For engineers reviewing the P6SMB22CA datasheet, P6SMB22CA pinout, P6SMB22CA application, or P6SMB22CA equivalent, key selection criteria include its bidirectional configuration, 17.8V standoff voltage, <1μA leakage at VWM, 1.0ps response time, and compliance with JESD201 Class 2 whisker resistance and UL 94V-0 molding compound.
Technical Context
The P6SMB22CA is a glass-passivated, single-die, bipolar TVS diode designed for unidirectional or bidirectional transient suppression in low-voltage DC systems. Its junction-to-ambient thermal resistance is 55°C/W, enabling reliable operation up to +150°C junction temperature under pulsed conditions.
It delivers 600W non-repetitive peak pulse power with a 10/1000μs waveform, clamps transients within 1.0ps, and maintains <1μA reverse leakage at 17.8V standoff - critical for low-power standby circuits and automotive infotainment power inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 19.8V / 24.2V - ensures consistent avalanche initiation across production lots and temperature |
| VWM | 17.8V - maximum continuous DC operating voltage before leakage exceeds 1μA |
| VC @ IPPM | 31.9V at 19A - defines worst-case voltage seen by protected IC during 10/1000μs surge |
| PPPSM | 600W - peak transient energy handling capacity under standardized surge waveform |
| IR @ VWM | <1μA - preserves battery life and signal integrity in always-on circuits |
| Response time | <1.0ps - enables suppression before sensitive logic or analog circuitry is damaged |
| TJ max | +150°C - supports operation in high-temperature environments like enclosed power adapters |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, cathode-banded case. Matte tin-plated leads, RoHS-compliant and halogen-free per IEC 61249-2-21.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (cathode band side) | Transient return path (bidirectional) | Functions as cathode in one polarity, anode in reverse - no fixed polarity marking required for CA devices |
| Cathode (cathode band side) | Transient return path (bidirectional) | Same physical terminal serves both polarities; cathode band indicates reference terminal for orientation during placement |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating DC lines without polarity concerns |
| Glass-passivated junction | Improves long-term reliability and moisture resistance vs. epoxy-passivated alternatives |
| ISO 7637-2 compliance | Validates robustness against automotive load-dump and inductive-switching transients |
| J-STD-020 Level 1 MSL | Allows unlimited floor life and reflow without baking - simplifies SMT manufacturing |
| UL 94V-0 molding compound | Meets flammability safety requirements for end-equipment certifications (e.g., UL/EN 62368) |
Applications
| Switching Mode Power Supply (SMPS) | AC-DC Adapters |
|---|---|
Use Scenario: Input rectifier output rail in offline flyback converters subject to line surges and coupling noise. IC Role / Device Role / Timing Role: Primary overvoltage clamp protecting secondary-side controller IC and optocoupler input. Use Value: Limits transient voltage to ≤31.9V, preventing latch-up or gate oxide damage in 30V-rated controllers. | Use Scenario: DC output stage of universal-input wall adapters exposed to plug-in/out transients and ESD. IC Role / Device Role / Timing Role: Bidirectional clamp on regulated 5V/12V/19V outputs to safeguard connected USB peripherals or monitors. Use Value: Sub-1μA leakage avoids loading regulation feedback networks; 600W rating handles repeated 10/1000μs surges. |
| Television Power Boards | Monitor Backlight Drivers |
Use Scenario: Main 24V/48V bus in LED-backlit TVs subjected to ESD from HDMI hot-plug and internal relay switching. IC Role / Device Role / Timing Role: Secondary-side transient suppressor placed near DC-DC converter inputs feeding T-con and audio subsystems. Use Value: 1.0ps response prevents voltage overshoot from propagating to timing-critical video processing ICs. | Use Scenario: High-side switch node in CCFL or LED backlight drivers where MOSFET drain sees inductive kickback. IC Role / Device Role / Timing Role: Snubber-grade clamp absorbing stored inductive energy during PWM turn-off. Use Value: Clamps spike to 31.9V, keeping it below 40V MOSFET VDSS derating margin while avoiding crowbar failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22CA (Bourns) | Same DO-214AA package, identical VBR (19.8–24.2V), but higher VC = 35.5V at 17A | Marginally lower clamping performance; may require layout review if system has tight 33V downstream tolerance | Select when Bourns supply chain alignment or dual-sourcing is prioritized over minimal clamping voltage |
| 1.5SMC22CA (Littelfuse) | DO-214AB (SMC) package - larger footprint (7.11 × 6.22 mm vs. SMB's 4.57 × 3.94 mm), same electrical specs | Requires PCB redesign due to 30% larger pad area and different thermal mass; not drop-in | Choose only if higher steady-state power dissipation (5W vs. 3W) is needed and board space permits |
Compared with SMBJ22CA and 1.5SMC22CA, the P6SMB22CA offers the lowest clamping voltage in its class and smallest standard SMB footprint - optimizing space-constrained designs where precise overvoltage limiting is critical.
Availability
P6SMB22CA 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 P6SMB22CA 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 Taiwanese manufacturer specializing in discrete semiconductors, including TVS diodes, rectifiers, and MOSFETs, with ISO 9001 and IATF 16949 certification.
The P6SMB22CA belongs to TSC's P6SMBx(A) family of 600W SMB-packaged TVS diodes, engineered for cost-sensitive, high-volume consumer and industrial power protection applications with stringent automotive transient compliance.
FAQ
What is the breakdown voltage tolerance of the P6SMB22CA?
The P6SMB22CA has a specified breakdown voltage range of 19.8V (minimum) to 24.2V (maximum) at 1mA test current, corresponding to ±10% tolerance around the nominal 22V rating. This tolerance is verified per ANSI/IEEE C62.35 and ensures predictable clamping behavior across temperature and production lots.
Is the P6SMB22CA suitable for automotive applications?
Yes, the P6SMB22CA meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b transient immunity requirements and operates from −55°C to +150°C junction temperature. While not AEC-Q200 qualified, its electrical and mechanical specifications align with front-end protection needs in infotainment, body control, and lighting modules.
How does the "CA" suffix affect the P6SMB22CA's functionality?
"CA" denotes bidirectional configuration: the P6SMB22CA functions identically in both polarities, with symmetrical VBR, VC, and leakage characteristics. Unlike unidirectional "A" variants, it requires no polarity-aware placement and protects AC-coupled or floating nodes without external series components.
What is the maximum peak pulse current the P6SMB22CA can handle?
The P6SMB22CA supports a maximum peak pulse current (IPPM) of 19A under the standard 10/1000μs waveform. This value is derived from its 600W peak pulse power rating and 31.9V clamping voltage (IPPM = PPPSM/VC), and is validated per Fig.3 in the official Taiwan Semiconductor datasheet.
Does the P6SMB22CA require derating at elevated ambient temperatures?
Yes, the P6SMB22CA must be derated above 25°C ambient per the pulse derating curve (Fig.2). At 85°C ambient, its 600W peak pulse capability reduces to approximately 420W; at 125°C, it drops to ~240W. Thermal design must account for RθJA = 55°C/W and ensure junction temperature stays ≤150°C during surge events.
P6SMB22CA 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):
- 18.8V
- Voltage - Breakdown (Min):
- 20.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.6V
- Current - Peak Pulse (10/1000µs):
- 20A
- 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)
P6SMB22CA FAQ
1.How can I place an order for P6SMB22CA through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB22CA 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 P6SMB22CA reliable?
The price and inventory of P6SMB22CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB22CA is usually 5 days.
3.What payment methods are accepted for P6SMB22CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB22CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB22CA?
P6SMB22CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB22CA 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 P6SMB22CA?
For technical support, including P6SMB22CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB22CA requirements.
6.How does Aetrix verify that P6SMB22CA is sourced from the original manufacturer or authorized distributors?
All P6SMB22CA 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 P6SMB22CA meets industry standards.
7.What is the process for return or replacement of P6SMB22CA?
All P6SMB22CA units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB22CA, 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 P6SMB22CA part is unused and in its original packaging.
Return procedure for P6SMB22CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB22CA Tags
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