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Vishay General Semiconductor - Diodes Division P4SMA22CAHE3/61
- Part No.:
- P4SMA22CAHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA22CAHE3/61.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA22CAHE3/61 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in the P4SMA series, designed for clamping voltage transients on signal or power lines. It features a 22 V standoff voltage (VWM), 24.2 V minimum breakdown voltage (VBR), 30.6 V maximum clamping voltage (VC) at 13.1 A peak pulse current (IPPM), and 400 W peak pulse power (PPPM) with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial control systems.
For engineers reviewing the P4SMA22CAHE3/61 datasheet, P4SMA22CAHE3/61 pinout, P4SMA22CAHE3/61 application, or P4SMA22CAHE3/61 equivalent, this device serves as an AEC-Q101-qualified, RoHS-compliant bidirectional TVS diode in SMA (DO-214AC) package with low incremental surge resistance, fast response time, and UL 94 V-0 molding compound - critical for ESD and load-switching transient protection in space-constrained designs.
Technical Context
The P4SMA22CAHE3/61 operates symmetrically in both directions due to its bidirectional construction, enabling suppression of positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while the 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 complies with AEC-Q101 for automotive use and meets JESD201 Class 2 whisker resistance. The device derates linearly above 25 °C ambient per Fig. 2, maintaining 300 W capability above 91 V and supporting repetitive surge duty cycles up to 0.01 % - suitable for infrequent but high-energy events like inductive kickback or lightning-induced surges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 22 V - maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 24.2 V min / 26.7 V max at 1 mA - precise voltage threshold where avalanche conduction initiates reliably under transient stress. |
| VC (Clamping Voltage) | 30.6 V max at 13.1 A IPPM - limits downstream voltage during surge, protecting 24 V logic or analog interfaces. |
| PPPM (Peak Pulse Power) | 400 W (10/1000 µs) - energy-handling capacity for single transient events; derated to 300 W above 91 V models. |
| ID (Reverse Leakage) | ≤1.0 µA at 22 V - ensures minimal standby power loss and signal integrity in high-impedance circuits. |
| TJ max | 150 °C - maximum junction temperature; enables operation in under-hood automotive or industrial enclosures. |
| Package | SMA (DO-214AC) - surface-mount footprint (5.28 mm × 4.50 mm) compatible with automated placement and reflow soldering. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads, UL 94 V-0 flammability rating, and polarity-unmarked for bidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative half-cycle) | Conducts during negative voltage excursions; forms symmetrical path with cathode for bidirectional clamping. |
| Cathode | Transient current entry (positive half-cycle) | Conducts during positive voltage excursions; paired with anode to enable full-wave surge suppression. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock - required for engine control, ADAS, and body electronics. |
| 400 W peak pulse power | Handles high-energy transients (e.g., ISO 7637-2 Pulse 1/2a/5a) without degradation when mounted on 5.0 mm × 5.0 mm copper pads. |
| Glass passivated junction | Ensures stable VBR tolerance (±5 %), low leakage, and long-term stability under thermal stress and humidity exposure. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns - eliminates bake requirements pre-assembly. |
| Low clamping ratio (VC/VBR ≈ 1.26) | Minimizes overvoltage stress on protected ICs - critical for safeguarding 3.3 V or 5 V logic rails adjacent to 24 V supply domains. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load-dump and jump-start transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across differential signal pairs or supply-to-ground to limit voltage excursions within IC absolute maximum ratings. Use Value: Prevents latch-up or permanent damage to 24 V-tolerant analog front-ends by clamping transients to ≤30.6 V while maintaining <1 µA leakage at 22 V nominal. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to inductive switching noise from solenoids and contactors in factory automation. IC Role / Device Role / Timing Role: Parallel-connected TVS on 24 V DC input lines to shunt surge energy before it reaches optocoupler or microcontroller input stages. Use Value: Enables robust operation under IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) testing with no performance degradation after 500+ surge events. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Shielding RS-485 transceivers and Ethernet PHYs in base station equipment from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary-level protection device placed at connector entry point, upstream of GDT or polymer PTC secondary protection. Use Value: Fast response (<1 ns) and low clamping voltage ensure signal integrity is preserved for high-speed data links operating up to 10 Mbps. |
Use Scenario: Suppressing back-EMF spikes generated by brushed DC motors in washing machines, HVAC blowers, and power tools. IC Role / Device Role / Timing Role: Across-motor terminals or between motor supply and ground to clamp commutation spikes before they couple into MCU power rails. Use Value: Eliminates need for snubber RC networks, reducing BOM count and board area while meeting CISPR 14-1 conducted emissions limits. |
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 | 600 W PPPM, larger SMB (DO-214AA) package, higher thermal mass, 33.2 V VC at 17.6 A IPPM | Better suited for higher-energy surges; requires larger PCB footprint and different pad layout | Select when system-level surge testing exceeds IEC 61000-4-5 Level 4 (4 kV line-earth) and board space permits SMB footprint. |
| 1.5KE22CA | 1500 W PPPM, axial-leaded DO-201AD package, 36.5 V VC at 41.1 A IPPM, no AEC-Q101 qualification | Higher power handling but through-hole mounting; not automotive-qualified; unsuitable for automated SMT lines | Choose only for prototyping or legacy through-hole designs where reflow compatibility and automotive compliance are not required. |
Compared with SMBJ22CA and 1.5KE22CA, the P4SMA22CAHE3/61 delivers optimal balance of AEC-Q101 compliance, SMT manufacturability, and 400 W surge capability in the smallest standardized surface-mount TVS package - making it the preferred choice for volume automotive and industrial PCBs where footprint, reliability, and process compatibility are jointly constrained.
Availability
P4SMA22CAHE3/61 is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC I/O modules, telecom line interface protection, and consumer appliance motor control requiring stable component supply, traceable sourcing, and lifecycle continuity.
Supply support for P4SMA22CAHE3/61 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 optimization.
The P4SMA series was developed to deliver high-power, low-profile transient suppression for automotive, industrial, and communications systems - combining AEC-Q101 qualification, robust surge handling, and SMT scalability in a standardized SMA package.
FAQ
What is the clamping voltage of P4SMA22CAHE3/61 at its rated peak pulse current?
The P4SMA22CAHE3/61 has a maximum clamping voltage (VC) of 30.6 V at 13.1 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured per Figure 1 in the Vishay datasheet 88367 and reflects worst-case voltage seen by protected circuitry during surge events - critical for ensuring downstream ICs remain within their absolute maximum voltage ratings.
Is P4SMA22CAHE3/61 suitable for automotive applications?
Yes, P4SMA22CAHE3/61 is AEC-Q101 qualified and carries the HE3 suffix indicating RoHS-compliant, automotive-grade construction. It undergoes rigorous stress testing including temperature cycling, humidity bias, and mechanical shock - making it approved for use in engine control units, body electronics, and ADAS sensors where reliability under harsh environmental conditions is mandatory.
What does the "CA" suffix mean in P4SMA22CAHE3/61?
The "CA" suffix in P4SMA22CAHE3/61 denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., P4SMA22A), it has no polarity marking and functions identically regardless of voltage polarity - ideal for AC-coupled lines or differential buses like CAN or RS-485.
What is the thermal resistance of P4SMA22CAHE3/61, and how does it affect layout?
The P4SMA22CAHE3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value dictates that PCB layout must allocate sufficient copper area to dissipate heat during repetitive surge events - insufficient pad size will cause premature thermal runaway and reduced pulse power capability.
How does P4SMA22CAHE3/61 compare to unidirectional P4SMA22AHE3/61 in terms of electrical behavior?
The P4SMA22CAHE3/61 and P4SMA22AHE3/61 share identical VWM (22 V), VBR (24.2–26.7 V), and VC (30.6 V) specifications, but differ fundamentally in polarity: P4SMA22CAHE3/61 conducts in both directions and lacks cathode band marking, while P4SMA22AHE3/61 is unidirectional with marked cathode and conducts only during reverse-bias surges. Their surge ratings and thermal performance are otherwise matched.
P4SMA22CAHE3/61 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)
P4SMA22CAHE3/61 FAQ
1.How can I place an order for P4SMA22CAHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA22CAHE3/61 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 P4SMA22CAHE3/61 reliable?
The price and inventory of P4SMA22CAHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA22CAHE3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA22CAHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA22CAHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA22CAHE3/61?
P4SMA22CAHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA22CAHE3/61 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 P4SMA22CAHE3/61?
For technical support, including P4SMA22CAHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA22CAHE3/61 requirements.
6.How does Aetrix verify that P4SMA22CAHE3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA22CAHE3/61 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 P4SMA22CAHE3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA22CAHE3/61?
All P4SMA22CAHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA22CAHE3/61, 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 P4SMA22CAHE3/61 part is unused and in its original packaging.
Return procedure for P4SMA22CAHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA22CAHE3/61 Tags
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