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Taiwan Semiconductor Corporation P4SMA22CH
- Part No.:
- P4SMA22CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA22CH.pdf
- Description:
- 400W, 22V, 10%, BIDIRECTIONAL, T
- Quantity:
- Payment:
- Shipping:
Inventory:9,417
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Product details
Overview
P4SMA22CH from Taiwan Semiconductor is a unidirectional 400W surface-mount transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, with breakdown voltage 19.8–24.2 V at 1 mA test current, working stand-off voltage 17.8 V, clamping voltage 31.9 V at 13 A peak pulse current, and AEC-Q101 qualification for automotive-grade surge protection in DC/DC converters.
For engineers reviewing the P4SMA22CH datasheet, P4SMA22CH pinout, P4SMA22CH application, or P4SMA22CH equivalent, this device is selected for high-reliability overvoltage clamping in automotive power rails, industrial SMPS inputs, and lighting driver circuits where fast response (<1 ps), low leakage (<1 µA @ 17.8 V), and ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance are required.
Technical Context
The P4SMA22CH employs a glass-passivated silicon junction optimized for unidirectional transient suppression, delivering 400 W peak pulse power (10/1000 µs waveform) with clamping voltage tightly controlled at 31.9 V under 13 A surge. Its thermal design supports continuous operation from –55 °C to +150 °C junction temperature.
It meets JESD201 Class 2 whisker resistance, UL 94V-0 mold compound flammability, and moisture sensitivity level 1 per J-STD-020 - enabling robust automated SMT assembly without preconditioning. Polarity is marked by cathode band on the SMA body.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 19.8 V / 24.2 V at 1 mA - defines minimum and maximum guaranteed breakdown threshold for reliable overvoltage triggering |
| VWM | 17.8 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA; sets safe DC rail margin |
| VC@IPPM | 31.9 V at 13 A (10/1000 µs) - clamping voltage limiting downstream circuit stress during transients |
| PPPM | 400 W - peak pulse power handling capacity per single non-repetitive surge event |
| IR@VWM | <1 µA - ultra-low reverse leakage ensures minimal standby power loss in battery-backed systems |
| TJ max | +150 °C - enables deployment in under-hood automotive environments and high-temperature industrial enclosures |
| Package | DO-214AC (SMA) - industry-standard surface-mount outline with 0.060 g mass and matte tin-plated leads |
Pinout & Package
DO-214AC (SMA) package: molded plastic case with axial lead configuration; cathode indicated by band on body; terminals are anode (unmarked end) and cathode (banded end); compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/Line side terminal | Connected to protected line (e.g., +12 V rail); conducts forward during clamping when cathode is held at higher potential |
| Cathode | Clamp reference terminal | Connected to system ground or lower-potential rail; establishes clamping path during reverse-biased surge events |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics use including engine control, body modules, and ADAS power supplies |
| Fast response time | <1.0 ps - limits voltage overshoot during ESD and load-dump transients before protection activates |
| Glass passivated junction | Enhances long-term reliability and stability of VBR under thermal cycling and humidity exposure |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnect), and Pulse 3a/3b (switching noise) |
| Moisture sensitivity level 1 | Zero bake requirement prior to reflow; supports standard SMT assembly without dry-pack handling |
Applications
| Automotive Body Control Module (BCM) | Industrial Switch-Mode Power Supply (SMPS) |
|---|---|
Use Scenario: Protects 12 V supply input of BCM microcontroller and CAN transceiver from load-dump and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between battery rail and local LDO/regulator input. Use Value: Limits transient voltage to ≤31.9 V, preventing latch-up or damage to 3.3 V/5 V logic ICs downstream. |
Use Scenario: Shields primary-side controller IC and MOSFET gate drivers from switching-induced voltage spikes in offline AC/DC converters. IC Role / Device Role / Timing Role: Line-to-ground clamping device across bulk capacitor or rectifier output. Use Value: Absorbs 400 W surges without degradation, maintaining stable 400 V DC bus integrity during startup and fault conditions. |
| LED Streetlight Driver | On-Board DC/DC Converter (Automotive) |
Use Scenario: Safeguards constant-current LED driver IC against lightning-induced surges on outdoor 24–48 V DC distribution lines. IC Role / Device Role / Timing Role: Primary overvoltage clamp at input stage, upstream of buck controller and current-sense amplifier. Use Value: Clamps 13 A transients within 31.9 V, preserving LED string integrity and avoiding false dimming or shutdown. |
Use Scenario: Guards 48 V–12 V step-down converter input in electric vehicle auxiliary power units exposed to ISO 7637-2 Pulse 2b. IC Role / Device Role / Timing Role: Input-stage TVS connected between HV rail and chassis ground to shunt surge energy away from synchronous rectifier FETs. Use Value: Enables compliance with automotive EMC requirements while sustaining 150 °C junction temperature during sustained operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22A | Bidirectional variant; VBR = 24.4–26.9 V; same DO-214AA package but larger footprint than SMA | Used where bidirectional protection (e.g., data lines, AC-coupled rails) is required instead of unidirectional DC rail clamping | Select SMBJ22A only if polarity-agnostic surge immunity is needed; P4SMA22CH offers tighter VBR tolerance and smaller SMA footprint for space-constrained DC designs |
| 1.5KE22A | Through-hole DO-201 package; higher 1.5 kW rating but slower response (~1 ns vs. <1 ps); no AEC-Q101 qualification | Suitable for non-automotive industrial equipment with less stringent size or qualification requirements | Choose 1.5KE22A for legacy through-hole designs or higher-energy surge needs; P4SMA22CH is preferred for AEC-Q101-compliant SMT automotive applications |
Compared with SMBJ22A and 1.5KE22A, the P4SMA22CH delivers superior automotive qualification, faster response, and smaller surface-mount form factor - making it optimal for modern compact, high-reliability DC power protection where unidirectional clamping suffices.
Availability
P4SMA22CH is available at Aetrix Electronics and suitable for automotive body control modules, industrial switch-mode power supplies, and LED streetlight drivers requiring stable component supply with full traceability and lifecycle management.
Supply support for P4SMA22CH 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, and rectifiers with global AEC-Q101 certification capabilities.
The P4SMA22CH belongs to TSC's P4SMAxH series of automotive-grade surface-mount TVS diodes, engineered specifically for ISO 7637-2-compliant transient suppression in harsh-environment 12 V/24 V automotive and industrial power systems.
FAQ
What is the polarity configuration of the P4SMA22CH?
The P4SMA22CH is a unidirectional TVS diode with cathode indicated by a band on the DO-214AC (SMA) package body. It conducts in forward bias during clamping events and blocks up to 17.8 V in reverse bias. This polarity must be observed during PCB layout to ensure correct placement between protected line and ground - incorrect orientation renders the device ineffective against transients.
Does the P4SMA22CH meet automotive qualification standards?
Yes, the P4SMA22CH is AEC-Q101 qualified and tested per ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b waveforms. It also complies with JESD201 Class 2 whisker resistance and moisture sensitivity level 1 per J-STD-020 - confirming suitability for automotive under-hood and body electronics applications without additional qualification effort.
What is the maximum clamping voltage of the P4SMA22CH under surge conditions?
The P4SMA22CH has a maximum clamping voltage (VC) of 31.9 V at 13 A peak pulse current (10/1000 µs waveform). This value represents the upper limit of voltage seen by downstream components during a worst-case transient, ensuring compatibility with 3.3 V, 5 V, and 12 V ICs when properly coordinated with system impedance.
Can the P4SMA22CH be used in bidirectional signal line protection?
No - the P4SMA22CH is unidirectional and not rated for bidirectional operation. For bidirectional protection (e.g., RS-485, CAN, or AC lines), select the P4SMA22CH's bidirectional counterpart such as P4SMA22CAH, which features symmetric breakdown in both directions and identical packaging and surge ratings.
What is the thermal derating behavior of the P4SMA22CH above 25°C ambient?
The P4SMA22CH follows standard TVS derating curves: its 400 W peak pulse power rating decreases linearly above 25°C ambient, reaching ~200 W at 75°C and ~100 W at 125°C per Figure 2 in the datasheet. Designers must apply this derating when sizing for sustained high-temperature environments like engine compartments or enclosed LED drivers.
P4SMA22CH 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):
- 17.8V
- Voltage - Breakdown (Min):
- 19.8V
- Voltage - Clamping (Max) @ Ipp:
- 31.9V
- Current - Peak Pulse (10/1000µs):
- 13A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA22CH FAQ
1.How can I place an order for P4SMA22CH through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA22CH 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 P4SMA22CH reliable?
The price and inventory of P4SMA22CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA22CH is usually 5 days.
3.What payment methods are accepted for P4SMA22CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA22CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA22CH?
P4SMA22CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA22CH 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 P4SMA22CH?
For technical support, including P4SMA22CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA22CH requirements.
6.How does Aetrix verify that P4SMA22CH is sourced from the original manufacturer or authorized distributors?
All P4SMA22CH 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 P4SMA22CH meets industry standards.
7.What is the process for return or replacement of P4SMA22CH?
All P4SMA22CH units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA22CH, 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 P4SMA22CH part is unused and in its original packaging.
Return procedure for P4SMA22CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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