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Taiwan Semiconductor Corporation P4SMA22CA
- Part No.:
- P4SMA22CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA22CA.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,644
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Product details
Overview
P4SMA22CA from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode designed for robust overvoltage protection in DC power lines and signal paths. It features a 22V nominal breakdown voltage (VBR = 20.9–23.1V), 400W peak pulse power rating (10/1000μs), 30.6V maximum clamping voltage at 13.7A, and DO-214AC (SMA) package - deployed in switching mode power supplies and on-board DC/DC converters.
For engineers reviewing the P4SMA22CA datasheet, P4SMA22CA pinout, P4SMA22CA application, or P4SMA22CA equivalent, key selection criteria include bidirectional clamping performance, low leakage (<1μA at 18.8V), ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b), and thermal stability up to +150°C junction temperature.
Technical Context
The P4SMA22CA implements a glass-passivated silicon avalanche junction optimized for fast transient suppression with sub-1ps response time. Its bidirectional architecture enables symmetrical clamping in both polarities without external polarity management, supporting unidirectional and bidirectional surge events per ANSI/IEEE C62.35.
It operates across -55°C to +150°C junction temperature range, with derated peak power above 25°C ambient per Fig.2, and meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity requirements - confirming suitability for reflow-soldered industrial PCB assemblies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 20.9V / 23.1V at 1mA test current - defines reliable avalanche initiation threshold under ESD/surge stress |
| VWM | 18.8V - maximum continuous reverse working voltage before leakage exceeds 1μA |
| VC@IPPM | 30.6V at 13.7A (10/1000μs) - clamping voltage limiting downstream circuit stress during 400W transients |
| IR@VWM | <1μA - ensures minimal standby power loss and signal integrity in high-impedance circuits |
| PPPM | 400W - peak pulse power handling capability compliant with ISO 7637-2 Pulse 1/2a/2b/3a/3b |
| TJ max | +150°C - enables operation in thermally demanding environments such as enclosed power adapters |
| Package | DO-214AC (SMA) - industry-standard surface-mount outline with 7,500 pcs/reel tape-and-reel packaging |
Pinout & Package
DO-214AC (SMA) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band; weight ≈0.060g; UL 94V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Transient current entry point in negative polarity events | Accepts reverse surge current during negative-going transients; symmetric with cathode under bidirectional operation |
| Cathode (banded end) | Transient current entry point in positive polarity events | Accepts forward surge current during positive-going transients; forms low-impedance clamp path to ground/rail |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating DC lines without polarity awareness |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress |
| Sub-1ps response time | Clamps ESD and fast transients before sensitive ICs experience overstress |
| ISO 7637-2 compliance | Validated for automotive-level load dump and inductive switch-off immunity (Pulse 1/2a/2b/3a/3b) |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive for environmentally constrained applications |
Applications
| Switching Mode Power Supply (SMPS) | On-Board DC/DC Converter |
|---|---|
Use Scenario: Protection of primary-side MOSFET gate drivers and secondary-side rectifier outputs against flyback spikes and line surges. IC Role / Device Role / Timing Role: Transient voltage suppressor placed across input/output rails to clamp voltage excursions beyond safe operating limits. Use Value: Limits peak rail voltage to ≤30.6V during 400W transients, preventing gate oxide rupture and rectifier avalanche failure. | Use Scenario: Input-side surge suppression in compact 12V-to-3.3V/5V point-of-load converters used in industrial PLCs and motor drives. IC Role / Device Role / Timing Role: Bidirectional TVS connected between VIN and GND to absorb coupled noise and load-dump energy. Use Value: Maintains <1μA leakage at 18.8V stand-off, preserving efficiency while enabling 13.7A impulse current handling per ISO 7637-2 Pulse 2b. |
| Lighting Application | Adapters |
Use Scenario: Overvoltage protection in LED driver modules subjected to lightning-induced surges on AC mains input or 24V DC bus lines. IC Role / Device Role / Timing Role: Standoff-clamp TVS placed across bulk capacitor terminals to prevent overvoltage damage during transient events. Use Value: Clamps 10/1000μs surges to 30.6V while sustaining 150°C junction temperature - critical for sealed, thermally limited LED housings. | Use Scenario: Secondary-side output rail protection in wall-mounted AC/DC adapters powering consumer electronics. IC Role / Device Role / Timing Role: Bidirectional TVS integrated near USB-C or barrel jack outputs to suppress ESD and hot-plug transients. Use Value: Sub-1ps response ensures clamping before USB PHY or PMIC input stages are damaged; DO-214AC footprint supports automated placement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22CA (Bourns) | Same DO-214AA package; 22V VBR, 600W PPPM, 35.5V VC - higher power but larger footprint | Preferred where higher surge margin is required and board space allows SMB package | Select SMBJ22CA when system-level testing requires >400W immunity; verify PCB pad layout compatibility |
| 1.5KE22CA (ON Semiconductor) | Through-hole DO-15 package; same 22V VBR, 400W PPPM, 35.5V VC - identical electrical specs but leaded assembly | Suitable for prototyping or legacy through-hole designs; not SMT-compatible | Choose 1.5KE22CA only for hand-soldered evaluation or repair; not recommended for volume SMT production |
Compared with SMBJ22CA and 1.5KE22CA, the P4SMA22CA delivers identical 22V bidirectional clamping and 400W surge rating in the smaller DO-214AC (SMA) footprint - optimizing board area and enabling full automation without sacrificing ISO 7637-2 compliance.
Availability
P4SMA22CA is available at Aetrix Electronics and suitable for switching mode power supplies, on-board DC/DC converters, and lighting applications requiring stable component supply, consistent parametric performance, and full traceability across production batches.
Supply support for P4SMA22CA 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 semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs - headquartered in Hsinchu, Taiwan.
The P4SMA series belongs to TSC's surface-mount TVS portfolio engineered specifically for high-reliability, automotive-qualified transient suppression in space-constrained DC power systems.
FAQ
What is the breakdown voltage range of the P4SMA22CA?
The P4SMA22CA has a guaranteed breakdown voltage range of 20.9V to 23.1V at 1mA test current (VBR), measured per ANSI/IEEE C62.35. This tight tolerance ensures predictable clamping onset across production lots and temperature extremes, directly supporting design margining for 24V nominal systems.
Is the P4SMA22CA suitable for automotive applications?
Yes, the P4SMA22CA meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements and operates from -55°C to +150°C, making it suitable for non-safety-critical automotive subsystems such as body control modules and infotainment power rails - though not qualified to AEC-Q101.
What is the maximum clamping voltage of the P4SMA22CA under surge conditions?
The P4SMA22CA exhibits a maximum clamping voltage (VC) of 30.6V at 13.7A peak pulse current (10/1000μs waveform). This value represents the upper limit of voltage seen by protected circuitry during a full 400W transient event, critical for ensuring downstream ICs remain within absolute maximum ratings.
Does the P4SMA22CA require polarity-aware PCB layout?
No - the P4SMA22CA is a bidirectional TVS diode, meaning its anode and cathode terminals behave identically under reverse and forward surge conditions. The cathode band marking is retained for consistency but does not constrain orientation; either terminal may connect to the protected rail or ground.
What packaging format is available for the P4SMA22CA?
The P4SMA22CA is supplied in DO-214AC (SMA) package with tape-and-reel packaging at 7,500 units per reel. This format supports fully automated pick-and-place assembly and complies with J-STD-020 moisture sensitivity Level 1 - eliminating bake requirements prior to reflow.
P4SMA22CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AC, SMA
- Series:
- P4SMA
- 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):
- 13.7A
- Power - Peak Pulse:
- 400W
- 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-214AC (SMA)
P4SMA22CA FAQ
1.How can I place an order for P4SMA22CA through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA22CA 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 P4SMA22CA reliable?
The price and inventory of P4SMA22CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA22CA is usually 5 days.
3.What payment methods are accepted for P4SMA22CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA22CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA22CA?
P4SMA22CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA22CA 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 P4SMA22CA?
For technical support, including P4SMA22CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA22CA requirements.
6.How does Aetrix verify that P4SMA22CA is sourced from the original manufacturer or authorized distributors?
All P4SMA22CA 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 P4SMA22CA meets industry standards.
7.What is the process for return or replacement of P4SMA22CA?
All P4SMA22CA units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA22CA, 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 P4SMA22CA part is unused and in its original packaging.
Return procedure for P4SMA22CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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