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Vishay General Semiconductor - Diodes Division P4SMA22CAHE3/5A
- Part No.:
- P4SMA22CAHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA22CAHE3/5A.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,312
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Product details
Overview
P4SMA22CAHE3/5A from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features a 22 V breakdown voltage (VBR = 20.9–23.1 V at 1 mA), 18.8 V standoff voltage (VWM), 30.6 V maximum clamping voltage (VC) at 13.1 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, sensor interfaces, and communication lines in automotive and industrial control systems.
For engineers reviewing the P4SMA22CAHE3/5A datasheet, P4SMA22CAHE3/5A pinout, P4SMA22CAHE3/5A application, or P4SMA22CAHE3/5A equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 120 °C/W), junction temperature limit (TJ = 150 °C), and bidirectional clamping behavior critical for ESD and surge protection design validation.
Technical Context
The P4SMA22CAHE3/5A operates as a bidirectional avalanche diode, symmetrically clamping transient voltages above ±22 V in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while its 120 °C/W junction-to-ambient thermal resistance requires careful PCB copper pad layout (0.2" × 0.2") for rated 400 W pulse handling.
It meets AEC-Q101 stress testing requirements for automotive applications and is RoHS-compliant with matte tin-plated leads solderable per J-STD-002. The device exhibits a 0.092 %/°C temperature coefficient of VBR, enabling predictable voltage shift over temperature in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 20.9 V / 23.1 V at 1 mA - defines precise clamping onset threshold in both directions |
| VWM | 18.8 V - maximum continuous reverse working voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 30.6 V at 13.1 A - peak clamped voltage during 10/1000 µs surge, limiting downstream IC stress |
| PPPM | 400 W - peak pulse power dissipation capability under standardized surge waveform |
| TJ max. | 150 °C - maximum junction temperature, constraining ambient and power derating above 25 °C |
| RθJA | 120 °C/W - thermal resistance requiring ≥5.0 mm × 5.0 mm copper pads per terminal for full rating |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
SMA (DO-214AC) surface-mount package with molded epoxy body, UL 94 V-0 flammability rating, and matte tin-plated leads. Bidirectional construction has no polarity marking; terminals are symmetrical anode/cathode pairs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | Accepts reverse surge current during negative transients; identical to cathode in bidirectional operation |
| Cathode | Transient current entry (positive polarity) | Accepts reverse surge current during positive transients; functionally interchangeable with anode |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 400 W peak pulse power | Supports robust immunity against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on properly laid out PCBs |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body electronics, and ADAS sensor interface protection |
| MSL Level 1 (260 °C) | Permits standard reflow soldering without moisture sensitivity handling or baking |
| Glass-passivated junction | Ensures long-term stability of VBR and low leakage drift across temperature and lifetime |
Applications
| Automotive Sensor Interface Protection | Industrial CAN Bus Line Protection |
|---|---|
|
Use Scenario: Protecting analog output pins of pressure, temperature, or position sensors connected to vehicle ECUs against load dump and ISO 7637-2 transients. IC Role / Device Role: Bidirectional TVS placed across sensor signal and ground, clamping fast-rising spikes before they reach ADC input or op-amp front-end. Use Value: Maintains signal integrity below 30.6 V clamp level during 13.1 A surge, preventing latch-up or damage to 3.3 V/5 V sensor signal conditioning ICs. |
Use Scenario: Safeguarding CAN_H and CAN_L differential pair in factory automation controllers exposed to motor drive switching noise and ground bounce. IC Role / Device Role: One P4SMA22CAHE3/5A per line (CAN_H–GND and CAN_L–GND), absorbing common-mode surges up to 400 W. Use Value: Preserves CAN bus timing margins by limiting voltage excursion to ≤30.6 V, avoiding bit errors or transceiver shutdown during repetitive 10/1000 µs events. |
| Consumer USB Port ESD Protection | Telecom DSL Line Surge Suppression |
|
Use Scenario: Secondary-level protection on USB 2.0 D+ and D− lines behind primary polymer-based TVS, handling residual 8 kV contact ESD per IEC 61000-4-2. IC Role / Device Role: Fast-response bidirectional clamp shunting ESD current away from USB PHY transceivers. Use Value: Sub-1 ns response time and 30.6 V clamping ensure transceiver I/O remains within absolute maximum ratings during 30 A ESD discharge. |
Use Scenario: Front-end surge suppression on ADSL/VDSL line cards subjected to lightning-induced longitudinal surges on twisted-pair telephone lines. IC Role / Device Role: Paired devices across tip-ring and tip-ground/ring-ground to clamp mode-specific transients in telecom infrastructure equipment. Use Value: 400 W pulse rating and 150 °C TJ max enable reliable operation in unventilated DSLAM chassis with ambient temperatures up to 85 °C. |
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 | Higher 600 W PPPM, larger SMB (DO-214AA) package, RθJA = 85 °C/W | Better suited for higher-energy surges but requires larger board area and different pad layout | Select when system-level surge tests exceed 400 W or when lower thermal resistance is needed for high-duty-cycle events |
| 1.5KE22CA | Through-hole DO-201 package, 1500 W PPPM, higher VC = 33.2 V at 45.5 A | Designed for legacy PCBs and high-power industrial mains protection, not SMT-optimized | Choose only for through-hole designs or where mechanical robustness outweighs board space constraints |
Compared with SMBJ22CA and 1.5KE22CA, the P4SMA22CAHE3/5A offers optimal balance of compact SMA footprint, AEC-Q101 qualification, and 400 W surge capability - making it preferred for space-constrained automotive and industrial SMT assemblies where MSL Level 1 reflow compatibility is required.
Availability
P4SMA22CAHE3/5A is available at Aetrix Electronics and suitable for automotive sensor modules, industrial CAN networks, consumer USB peripherals, and telecom DSL line cards requiring stable component supply with AEC-Q101 assurance and RoHS compliance.
Supply support for P4SMA22CAHE3/5A 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific performance.
The P4SMA Series targets cost-sensitive, high-volume transient suppression needs in automotive, industrial, and communications systems - delivering standardized TVS performance in compact, qualified, and manufacturable SMT packages.
FAQ
What does the "CA" suffix mean in P4SMA22CAHE3/5A?
The "CA" suffix denotes a bidirectional configuration: the P4SMA22CAHE3/5A clamps transient voltages symmetrically in both polarities, with no cathode band marking. This distinguishes it from unidirectional variants (e.g., P4SMA22AHE3/5A) that require correct polarity orientation during placement. The CA version is ideal for AC signal lines or floating buses like CAN or RS-485 where polarity reversal may occur.
Is P4SMA22CAHE3/5A qualified for automotive use?
Yes, P4SMA22CAHE3/5A is AEC-Q101 qualified, as confirmed by Vishay's documentation and ordering code "HE3" (RoHS-compliant + AEC-Q101). It undergoes stress testing for temperature cycling, high-temperature reverse bias, and ESD robustness - making it suitable for under-hood and cabin electronics including engine control, ADAS sensors, and infotainment interfaces.
What is the maximum clamping voltage of P4SMA22CAHE3/5A under surge conditions?
The maximum clamping voltage (VC) of P4SMA22CAHE3/5A is 30.6 V at 13.1 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured under standardized test conditions and represents the upper voltage limit imposed on protected circuitry during worst-case surge events - critical for ensuring downstream 3.3 V or 5 V ICs remain within safe operating limits.
How does the HE3 suffix differ from E3 or M3 in P4SMA22CAHE3/5A?
The "HE3" suffix in P4SMA22CAHE3/5A indicates RoHS-compliant construction with AEC-Q101 qualification, whereas "E3" is RoHS-compliant commercial grade only, and "M3" adds halogen-free compliance. HE3 devices undergo additional automotive reliability screening, including extended temperature cycling and humidity testing - essential for P4SMA22CAHE3/5A deployment in automotive safety-critical subsystems.
Can P4SMA22CAHE3/5A be used in place of a unidirectional TVS like P4SMA22AHE3/5A?
No - P4SMA22CAHE3/5A is strictly bidirectional and lacks polarity marking, while P4SMA22AHE3/5A is unidirectional with a cathode band. Substituting them requires verifying circuit topology: bidirectional use is mandatory for AC-coupled or floating lines, whereas unidirectional types are required for DC-biased rails where reverse conduction must be blocked. Using P4SMA22CAHE3/5A in a unidirectional application may cause unintended conduction during normal operation.
P4SMA22CAHE3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- P4SMA, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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):
- 13.1A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA22CAHE3/5A FAQ
1.How can I place an order for P4SMA22CAHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA22CAHE3/5A 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 P4SMA22CAHE3/5A reliable?
The price and inventory of P4SMA22CAHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA22CAHE3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA22CAHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA22CAHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA22CAHE3/5A?
P4SMA22CAHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA22CAHE3/5A 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 P4SMA22CAHE3/5A?
For technical support, including P4SMA22CAHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA22CAHE3/5A requirements.
6.How does Aetrix verify that P4SMA22CAHE3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA22CAHE3/5A 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 P4SMA22CAHE3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA22CAHE3/5A?
All P4SMA22CAHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA22CAHE3/5A, 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 P4SMA22CAHE3/5A part is unused and in its original packaging.
Return procedure for P4SMA22CAHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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