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Vishay General Semiconductor - Diodes Division P4SMA22AHE3/5A
- Part No.:
- P4SMA22AHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA22AHE3/5A.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,584
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Product details
Overview
P4SMA22AHE3/5A from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, rated for 22 V breakdown voltage (VBR = 20.9–23.1 V at IT = 1.0 mA), 30.6 V maximum clamping voltage (VC) at 13.1 A peak pulse current, and 400 W peak pulse power (10/1000 µs waveform). It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients and lightning surges in automotive and industrial power rails.
For engineers reviewing the P4SMA22AHE3/5A datasheet, P4SMA22AHE3/5A pinout, P4SMA22AHE3/5A application, or P4SMA22AHE3/5A equivalent, key selection criteria include its AEC-Q101 qualification, 18.8 V stand-off voltage (VWM), <1.0 µA reverse leakage at VWM, low thermal resistance (RθJL = 30 °C/W), and compatibility with automated SMT placement on standard 5.0 mm × 5.0 mm copper pads.
Technical Context
The P4SMA22AHE3/5A operates as a unidirectional avalanche-clamping device, triggered when reverse voltage exceeds its 20.9–23.1 V breakdown threshold, diverting transient energy to ground while limiting downstream voltage to ≤30.6 V. Its glass-passivated junction ensures stable VBR tolerance (±5%) and fast response time (<1.0 ns).
Designed for high-reliability environments, it meets MSL Level 1 per J-STD-020 (peak reflow temperature 260 °C), supports 40 A non-repetitive forward surge current (8.3 ms half-sine), and maintains operation across -65 °C to +150 °C junction temperature range. The cathode band marking identifies polarity for correct PCB orientation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 20.9 V / 23.1 V at 1.0 mA test current - defines precise clamping onset threshold for overvoltage protection |
| VWM | 18.8 V - maximum continuous reverse operating voltage before leakage rises above 1.0 µA |
| VC @ IPPM | 30.6 V at 13.1 A - limits protected circuit voltage during 400 W transient event (10/1000 µs) |
| PPPM | 400 W - peak pulse power handling capability under standardized surge waveform |
| IFSM | 40 A - single half-sine surge current rating (8.3 ms), critical for inductive load switching protection |
| TJ max. | +150 °C - enables use in under-hood automotive and high-temperature industrial environments |
| RθJL | 30 °C/W - low junction-to-lead thermal resistance supports reliable power dissipation without heatsink |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode identified by black band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path / transient return path | Connected to system ground or low-impedance return node during clamping |
| Cathode | Protected line connection / high-side clamp input | Connected to the line being protected (e.g., 24 V rail, sensor output); band-marked end |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| Glass passivated junction | Ensures stable VBR performance and long-term leakage stability under thermal stress |
| MSL Level 1 | Compatible with standard lead-free reflow profiles up to 260 °C peak without moisture sensitivity concerns |
| 400 W peak pulse power | Handles common ISO 7637-2 and IEC 61000-4-5 surge events without degradation |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for downstream ICs |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Suppressing load-dump and jump-start transients on 24 V battery-fed ECUs and body control modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground, clamping surges within nanoseconds. Use Value: Limits rail voltage to ≤30.6 V during 400 W transients, preventing damage to 36 V-rated DC-DC converters and microcontrollers. |
Use Scenario: Protecting analog outputs of pressure/temperature sensors connected to PLC inputs in factory automation. IC Role / Device Role / Timing Role: Clamp diode installed at sensor connector to shunt induced EFT and surge energy before reaching ADC front-end. Use Value: Maintains signal integrity with <1.0 µA leakage at 18.8 V, avoiding offset errors in 4–20 mA loops. |
| Telecom DC Power Interface | Consumer Appliance Motor Drive Protection |
|
Use Scenario: Safeguarding PoE-powered equipment (e.g., IP cameras) against induced surges on 48 V DC input lines. IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side DC bus, coordinated with upstream MOVs. Use Value: Fast 1 ns response and 30.6 V clamping enable compliance with IEC 61000-4-5 Level 3 (2 kV/12 Ω) testing. |
Use Scenario: Shielding MCU GPIOs and gate drivers from back-EMF spikes generated by brushed DC motors in washing machines. IC Role / Device Role / Timing Role: Localized TVS mounted directly at motor connector to minimize inductance in clamping path. Use Value: Withstands 40 A surge current (8.3 ms) without failure, ensuring longevity in high-cycle appliance applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A-E3/57T | Same VBR range (20.9–23.1 V), identical SMA package, but rated for 400 W only up to 200 V VWM; no AEC-Q101 qualification | Lacks automotive qualification; suitable for commercial/industrial use where AEC-Q101 is not mandated | Select when cost sensitivity outweighs automotive compliance requirements and full lifecycle traceability |
| 1.5SMC22A | Higher package thermal mass (DO-214AB), 400 W rating, same VBR/VC, but larger footprint and lower MSL rating (Level 2) | Requires larger PCB pad area (7.1 mm × 6.2 mm vs. 5.3 mm × 4.6 mm); less suited for dense automotive layouts | Choose when higher surge repetition tolerance is needed and board space permits larger SMC package |
Compared with SMAJ22A-E3/57T and 1.5SMC22A, the P4SMA22AHE3/5A uniquely combines AEC-Q101 qualification, MSL Level 1 reflow compatibility, and compact SMA footprint-making it optimal for space-constrained, high-reliability automotive and industrial designs requiring zero rework risk and full supply-chain traceability.
Availability
P4SMA22AHE3/5A is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, telecom power supplies, and consumer appliance motor controls requiring stable component supply with full AEC-Q101 documentation and RoHS compliance.
Supply support for P4SMA22AHE3/5A 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, TVS devices, and power MOSFETs with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA Series is designed specifically for robust, surface-mount transient voltage suppression in automotive, industrial, and communications systems-delivering consistent clamping performance, AEC-Q101 validation, and automated assembly readiness.
FAQ
What is the clamping voltage of the P4SMA22AHE3/5A under a 10/1000 µs surge?
The P4SMA22AHE3/5A exhibits a maximum clamping voltage (VC) of 30.6 V when subjected to its rated peak pulse current of 13.1 A under the standard 10/1000 µs waveform. This value is measured at TA = 25 °C on 5.0 mm × 5.0 mm copper pads and defines the upper voltage limit imposed on protected circuits during transient events. The P4SMA22AHE3/5A maintains this clamping performance consistently due to its glass-passivated junction and low incremental surge resistance.
Is the P4SMA22AHE3/5A suitable for automotive applications?
Yes, the P4SMA22AHE3/5A is AEC-Q101 qualified and explicitly designated for automotive use via its "HE3" suffix, confirming compliance with stress tests including temperature cycling, high-temperature reverse bias, and ESD. It operates reliably from -65 °C to +150 °C and supports reflow up to 260 °C (MSL Level 1), making the P4SMA22AHE3/5A appropriate for engine control units, body electronics, and ADAS power domains.
What does the "/5A" suffix indicate in P4SMA22AHE3/5A?
The "/5A" suffix denotes the packaging configuration: 7500 units per 13-inch diameter plastic tape-and-reel. This large-volume reel format is optimized for high-speed SMT placement in production environments. The base part P4SMA22AHE3 is identical in electrical and mechanical specifications-the "/5A" solely specifies reel size and quantity, not performance or qualification level. All P4SMA22AHE3/5A units retain full AEC-Q101 certification and RoHS compliance.
How does the P4SMA22AHE3/5A differ from bidirectional TVS diodes like P4SMA22CA?
The P4SMA22AHE3/5A is unidirectional and features a cathode band for polarity-sensitive placement, enabling protection only against reverse-polarity transients on positive rails. In contrast, P4SMA22CA is bidirectional with symmetrical clamping in both directions and no polarity marking. The P4SMA22AHE3/5A offers tighter VBR tolerance (±5% vs. ±10% for many bidirectional variants) and lower leakage at VWM, making it preferred for DC power rail protection where polarity is fixed.
What is the maximum steady-state power dissipation of the P4SMA22AHE3/5A?
The P4SMA22AHE3/5A has a maximum steady-state power dissipation (PD) of 3.3 W at TA = 50 °C on an infinite heatsink. In typical PCB layouts with 5.0 mm × 5.0 mm copper pads per terminal, derating applies above 25 °C ambient-e.g., ~2.5 W at 70 °C. This rating governs continuous leakage power under sustained overvoltage conditions, distinct from its 400 W transient capability. The P4SMA22AHE3/5A's RθJL of 30 °C/W supports effective heat transfer to PCB copper without external heatsinking.
P4SMA22AHE3/5A 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:
- 1
- Bidirectional Channels:
- -
- 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)
P4SMA22AHE3/5A FAQ
1.How can I place an order for P4SMA22AHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA22AHE3/5A 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 P4SMA22AHE3/5A reliable?
The price and inventory of P4SMA22AHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA22AHE3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA22AHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA22AHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA22AHE3/5A?
P4SMA22AHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA22AHE3/5A 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 P4SMA22AHE3/5A?
For technical support, including P4SMA22AHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA22AHE3/5A requirements.
6.How does Aetrix verify that P4SMA22AHE3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA22AHE3/5A 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 P4SMA22AHE3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA22AHE3/5A?
All P4SMA22AHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA22AHE3/5A, 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 P4SMA22AHE3/5A part is unused and in its original packaging.
Return procedure for P4SMA22AHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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