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Vishay General Semiconductor - Diodes Division P4SMA22AHM3_A/I
- Part No.:
- P4SMA22AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA22AHM3_A/I.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,526
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Product details
Overview
P4SMA22AHM3_A/I 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 P4SMA22AHM3_A/I datasheet, P4SMA22AHM3_A/I pinout, P4SMA22AHM3_A/I application, or P4SMA22AHM3_A/I equivalent, this device delivers AEC-Q101 qualification, halogen-free RoHS compliance, MSL Level 1 moisture sensitivity, and verified clamping performance under repetitive surge conditions - critical for automotive ECU, industrial PLC I/O protection, and telecom DC power input stages.
Technical Context
This unidirectional TVS operates with a glass-passivated junction and exhibits low incremental surge resistance (typical Rdyn ≈ 0.58 Ω derived from ΔVC/ΔIPPM), enabling fast response to sub-nanosecond transients. Its thermal resistance (RθJA = 120 °C/W) and 150 °C max junction temperature support operation in high-ambient environments when mounted on 5.0 mm × 5.0 mm copper pads.
The device features a stand-off voltage (VWM) of 18.8 V, reverse leakage <1.0 µA at VWM, and forward surge capability of 40 A (8.3 ms half-sine). Its polarity marking (cathode band) and matte tin-plated leads ensure compatibility with J-STD-002 soldering and JESD22-B102 whisker testing.
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 detection |
| VWM | 18.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 30.6 V at 13.1 A - clamped voltage during 400 W transient, limiting downstream stress to safe levels |
| PPPM | 400 W (10/1000 µs) - peak surge energy handling capacity for single-event protection |
| IFSM | 40 A (8.3 ms half-sine) - forward surge rating for accidental polarity reversal or inrush events |
| TJ max | +150 °C - enables use in under-hood automotive and high-temp industrial enclosures |
| Package | SMA (DO-214AC) - industry-standard SMD outline with 5.28 mm length, 4.50 mm width, 2.29 mm height |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, unidirectional configuration with cathode band marking. Dimensions: 5.28 mm × 4.50 mm × 2.29 mm. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal per Vishay specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | Connected to protected circuit ground or low-side return path during surge conduction |
| Cathode | Current exit point in forward bias; marked with band | Connected to line/voltage rail being protected; conducts surge current to ground when VIN > VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics including engine control, body modules, and ADAS power inputs |
| Halogen-free & RoHS-compliant | Meets IEC 61249-2-21 and JEDEC J-STD-020 MSL Level 1 for lead-free reflow assembly |
| 400 W peak pulse power | Handles ISO 7637-2 Pulse 1/2a/5a transients without degradation when properly heatsinked |
| Low clamping ratio (VC/VBR ≈ 1.32) | Minimizes overvoltage overshoot during fast transients, reducing risk to downstream 24 V logic |
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamp |
|---|---|
|
Use Scenario: 12 V/24 V battery-fed ECUs exposed to load dump (ISO 16750-2) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges above 22 V. Use Value: Limits transient voltage to ≤30.6 V, protecting 36 V-rated DC-DC converters and CAN transceivers. |
Use Scenario: Analog output lines (e.g., 4–20 mA current loop) from pressure/temperature sensors in factory automation. IC Role / Device Role / Timing Role: Low-capacitance TVS shunting induced EFT bursts (IEC 61000-4-4) on signal traces. Use Value: Clamps 4 kV ESD events within 1 ns while adding <1 pF parasitic capacitance - no signal integrity impact. |
| Telecom DC Power Entry Stage | Consumer Appliance Motor Drive Protection |
|
Use Scenario: -48 V DC power input to base station radios subjected to lightning-induced surges (IEC 61000-4-5). IC Role / Device Role / Timing Role: Primary TVS in cascade with MOVs and gas discharge tubes for staged surge suppression. Use Value: Absorbs initial 400 W surge energy before secondary protectors activate, extending system lifetime. |
Use Scenario: Brushless DC motor driver boards in HVAC systems where back-EMF spikes exceed 30 V. IC Role / Device Role / Timing Role: Parallel-mounted across H-bridge high-side FETs to suppress inductive kickback. Use Value: Limits VDS stress to <31 V, preventing avalanche failure in 40 V-rated MOSFETs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A-E3/5A | Same VBR range (20.9–23.1 V), but lower PPPM = 400 W only up to 22 V; not AEC-Q101 qualified | Limited to commercial-grade industrial and consumer designs; unsuitable for automotive OEM programs | Select when AEC-Q101 is not required and cost optimization is prioritized over automotive qualification |
| 1.5SMC22A | Higher package thermal mass (DO-214AB), RθJA = 60 °C/W vs. 120 °C/W; same VBR/VC specs | Better sustained power handling but larger footprint; incompatible with dense PCB layouts requiring SMA | Choose for high-reliability industrial power supplies where board space permits DO-214AB and thermal margin is critical |
Compared with P4SMA22AHM3_A/I, SMAJ22A-E3/5A lacks automotive qualification and traceability, while 1.5SMC22A trades compactness for superior thermal dissipation - making P4SMA22AHM3_A/I optimal for space-constrained AEC-Q101-compliant designs needing verified MSL-1 assembly robustness.
Availability
P4SMA22AHM3_A/I is available at Aetrix Electronics and suitable for automotive ECU power protection, industrial sensor interface hardening, and telecom DC input surge suppression requiring stable component supply, full traceability, and long-term lifecycle assurance.
Supply support for P4SMA22AHM3_A/I 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, and protection devices with emphasis on reliability, automotive qualification, and high-volume manufacturability.
The P4SMA Series targets cost-sensitive yet mission-critical transient suppression in automotive, industrial, and telecom infrastructure - delivering AEC-Q101 validation, halogen-free compliance, and standardized SMA packaging for automated assembly.
FAQ
What is the clamping voltage of P4SMA22AHM3_A/I at its rated peak pulse current?
The P4SMA22AHM3_A/I has a maximum clamping voltage (VC) of 30.6 V at 13.1 A peak pulse current (IPPM), measured under the standard 10/1000 µs waveform. This value ensures that downstream components see no more than 30.6 V during a 400 W transient event, directly supporting design margins for 36 V-rated ICs and MOSFETs. The clamping performance is validated per Vishay Document Number 88367, Revision 09-Jan-2024.
Is P4SMA22AHM3_A/I qualified for automotive applications?
Yes, P4SMA22AHM3_A/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3_A" - where "H" denotes halogen-free, "M3" indicates RoHS compliance, and "A" specifies AEC-Q101 qualification for the 6.8 V to 220 V voltage range. This makes P4SMA22AHM3_A/I suitable for under-hood and body-control module applications requiring automotive-grade reliability and traceability.
What is the stand-off voltage (VWM) and reverse leakage specification for P4SMA22AHM3_A/I?
The P4SMA22AHM3_A/I has a maximum stand-off voltage (VWM) of 18.8 V and guarantees reverse leakage current (ID) ≤ 1.0 µA at that voltage, tested at TA = 25 °C. This ensures minimal quiescent power loss in always-on circuits and prevents false triggering during normal operation - critical for battery-powered sensor nodes and low-power automotive modules using P4SMA22AHM3_A/I.
Does P4SMA22AHM3_A/I have moisture sensitivity level (MSL) rating?
Yes, P4SMA22AHM3_A/I meets MSL Level 1 per J-STD-020, with a maximum lead-free reflow peak temperature of 260 °C. This eliminates bake requirements prior to assembly and supports standard SMT processes without moisture-related delamination risk - a key advantage for high-yield manufacturing of automotive and industrial PCBs using P4SMA22AHM3_A/I.
What package type and dimensions does P4SMA22AHM3_A/I use?
P4SMA22AHM3_A/I uses the SMA (DO-214AC) surface-mount package, measuring 5.28 mm in length, 4.50 mm in width, and 2.29 mm in height. Its cathode is marked with a visible band, and terminals are matte tin-plated for compatibility with J-STD-002 soldering standards. This compact outline enables high-density placement in space-constrained designs relying on P4SMA22AHM3_A/I for transient protection.
P4SMA22AHM3_A/I 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:
- Active
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA22AHM3_A/I FAQ
1.How can I place an order for P4SMA22AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA22AHM3_A/I 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 P4SMA22AHM3_A/I reliable?
The price and inventory of P4SMA22AHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA22AHM3_A/I is usually 5 days.
3.What payment methods are accepted for P4SMA22AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA22AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA22AHM3_A/I?
P4SMA22AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA22AHM3_A/I 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 P4SMA22AHM3_A/I?
For technical support, including P4SMA22AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA22AHM3_A/I requirements.
6.How does Aetrix verify that P4SMA22AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All P4SMA22AHM3_A/I 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 P4SMA22AHM3_A/I meets industry standards.
7.What is the process for return or replacement of P4SMA22AHM3_A/I?
All P4SMA22AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA22AHM3_A/I, 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 P4SMA22AHM3_A/I part is unused and in its original packaging.
Return procedure for P4SMA22AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA22AHM3_A/I Tags
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