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Vishay General Semiconductor - Diodes Division P4SMA220AHM3/H
- Part No.:
- P4SMA220AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA220AHM3/H.pdf
- Description:
- TVS DIODE 185VWM 328VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA220AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, rated for 220 V standoff voltage (VWM), 231 V minimum breakdown voltage (VBR), and 400 W peak pulse power (10/1000 μs). It delivers 0.91 A peak pulse current (IPPM) and clamps transients to ≤328 V at rated surge, protecting MOSFETs and ICs in industrial power supplies and automotive sensor interfaces.
For engineers reviewing the P4SMA220AHM3/H datasheet, P4SMA220AHM3/H pinout, P4SMA220AHM3/H application, or P4SMA220AHM3/H equivalent, this page provides verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 120 °C/W), and real-world protection use cases - all confirmed from Vishay's official P4SMA series specification document 88367 (Rev. 09-Jan-2024).
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, optimized for fast transient suppression on DC power rails and signal lines. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and low incremental surge resistance, enabling consistent clamping performance across temperature (-65 °C to +150 °C).
The device meets J-STD-020 MSL Level 1 (peak reflow 260 °C) and is halogen-free, RoHS-compliant, and AEC-Q101 qualified - confirming suitability for automotive-grade PCB assembly and high-reliability industrial environments where repetitive 10/1000 μs surges up to 400 W must be safely diverted without degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 185 V - Maximum continuous reverse voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 209–231 V at 1.0 mA test current - Ensures precise, repeatable avalanche conduction onset during overvoltage events. |
| VC (Clamping Voltage) | ≤328 V at IPPM - Limits voltage seen by protected downstream components during 400 W transient surges. |
| PPPM (Peak Pulse Power) | 400 W (10/1000 μs waveform) - Sustains high-energy transients common in automotive load-dump and inductive switching. |
| IPPM (Peak Pulse Current) | 0.91 A - Quantifies maximum surge current the device can shunt while maintaining clamping integrity. |
| RθJA | 120 °C/W - Thermal resistance from junction to ambient; informs heatsinking requirements on standard 0.2" × 0.2" copper pads. |
| TJ max. | +150 °C - Maximum junction temperature; supports operation in under-hood automotive and industrial enclosures. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. Cathode identified by band marking; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when reverse voltage exceeds VBR. |
| Anode (unbanded end) | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS sensor interfaces. |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for global electronics manufacturing and end-of-life recycling. |
| 400 W peak pulse power (10/1000 μs) | Handles high-energy transients from inductive load switching without failure or parameter shift. |
| Fast response time & low clamping ratio | Sub-nanosecond turn-on enables protection of sensitive CMOS inputs and gate drivers before damage occurs. |
| MSL Level 1 moisture sensitivity | Allows direct placement into reflow ovens without baking; compatible with standard SMT assembly lines. |
Applications
| Automotive Sensor Protection | Industrial Power Supply Input |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor front-ends from load-dump spikes and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between sensor supply rail and chassis ground. Use Value: Prevents latch-up or gate oxide rupture in 5 V/12 V sensor ICs during ISO 7637-2 Pulse 5a transients up to 100 V. |
Use Scenario: Safeguarding AC/DC converter primary-side controllers and rectifier bridges against lightning-induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS on DC bus input to absorb repetitive 400 W pulses without derating. Use Value: Maintains system uptime by eliminating field failures caused by 10/1000 μs transients exceeding 200 V. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Shielding Ethernet PHYs and PoE injectors from induced surges on outdoor cabling runs. IC Role / Device Role / Timing Role: Secondary-stage TVS after gas discharge tube (GDT), providing low-clamp refinement. Use Value: Reduces residual clamping voltage to <330 V, ensuring compliance with IEC 61000-4-5 Level 4 (4 kV) immunity testing. |
Use Scenario: Suppressing back-EMF spikes from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Parallel-mounted across motor terminals to divert inductive kickback energy. Use Value: Extends lifespan of H-bridge MOSFETs by limiting drain-source voltage overshoot to ≤328 V during commutation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ220A | Same VWM (185 V), identical SMA package, but rated for 400 W only up to 91 V; above 91 V, PPPM drops to 300 W. | Limited to lower-energy surge environments; not AEC-Q101 qualified. | Select when cost sensitivity outweighs automotive qualification and full 400 W capability at 220 V. |
| 1.5SMC220A | Higher power rating (1500 W), larger SMC (DO-214AB) package, 20 % larger footprint and 3× higher RθJA (350 °C/W). | Requires PCB redesign; suited for infrequent, ultra-high-energy surges rather than repetitive industrial transients. | Choose only if system-level testing confirms need for >400 W pulse handling and layout allows SMC footprint. |
Compared with SMAJ220A and 1.5SMC220A, P4SMA220AHM3/H uniquely combines AEC-Q101 qualification, full 400 W capability at 220 V standoff, and MSL Level 1 compatibility - making it optimal for space-constrained, high-volume automotive and industrial designs requiring zero-layout-change reliability.
Availability
P4SMA220AHM3/H is available at Aetrix Electronics and suitable for automotive ECU design, industrial power supply hardening, and telecom interface protection requiring stable component supply, halogen-free compliance, and AEC-Q101 validation.
Supply support for P4SMA220AHM3/H 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The P4SMA series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where compact size, high surge tolerance, and qualification rigor are mandatory.
FAQ
What is the clamping voltage of P4SMA220AHM3/H at its rated peak pulse current?
The P4SMA220AHM3/H has a maximum clamping voltage (VC) of 328 V when subjected to its rated peak pulse current (IPPM) of 0.91 A under the standard 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88367 and defines the upper voltage limit imposed on protected circuitry during surge events. The P4SMA220AHM3/H maintains this clamping performance across its full operating temperature range (-65 °C to +150 °C).
Is P4SMA220AHM3/H qualified for automotive applications?
Yes, P4SMA220AHM3/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" and documentation in revision 09-Jan-2024 of spec 88367. The "HM3" denotes halogen-free, RoHS-compliant, and AEC-Q101-qualified construction. This qualification validates its reliability for under-hood and chassis-mounted automotive electronics, including engine control modules and ADAS sensor units where P4SMA220AHM3/H serves as primary transient suppression.
What does the "H" in P4SMA220AHM3/H signify?
The "H" in P4SMA220AHM3/H indicates the packaging configuration: 7-inch diameter plastic tape and reel, with a base quantity of 1800 devices per reel. This is defined in Vishay's Ordering Information table (page 3 of document 88367), where "H" corresponds to the delivery mode code for standard SMT reels. The "HM3" portion confirms halogen-free and AEC-Q101 qualification, while the trailing "/H" explicitly specifies reel format - critical for automated pick-and-place integration of P4SMA220AHM3/H.
Can P4SMA220AHM3/H replace bidirectional TVS diodes in circuit designs?
No, P4SMA220AHM3/H is strictly unidirectional and must not replace bidirectional TVS diodes without circuit redesign. Its cathode-band polarity requires correct orientation relative to DC bias; reverse connection renders it nonfunctional. Bidirectional variants (e.g., P4SMA220CA) have symmetric breakdown in both directions and no polarity marking. Substituting P4SMA220AHM3/H for a bidirectional part would leave AC-coupled or floating lines unprotected during negative transients - a critical failure mode not mitigated by the P4SMA220AHM3/H design.
What is the maximum junction temperature rating for P4SMA220AHM3/H?
The maximum junction temperature (TJ max.) for P4SMA220AHM3/H is +150 °C, as specified in the "Maximum Ratings" table of Vishay document 88367. This rating applies across the full storage and operating range (-65 °C to +150 °C) and is validated under derated power conditions per Figure 2. Engineers must ensure thermal design - including PCB copper pad area (0.2" × 0.2") and ambient temperature - keeps actual junction temperature below +150 °C during worst-case surge events to maintain long-term reliability of P4SMA220AHM3/H.
P4SMA220AHM3/H 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):
- 185V
- Voltage - Breakdown (Min):
- 209V
- Voltage - Clamping (Max) @ Ipp:
- 328V
- Current - Peak Pulse (10/1000µs):
- 910mA
- 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)
P4SMA220AHM3/H FAQ
1.How can I place an order for P4SMA220AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA220AHM3/H 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 P4SMA220AHM3/H reliable?
The price and inventory of P4SMA220AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA220AHM3/H is usually 5 days.
3.What payment methods are accepted for P4SMA220AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA220AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA220AHM3/H?
P4SMA220AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA220AHM3/H 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 P4SMA220AHM3/H?
For technical support, including P4SMA220AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA220AHM3/H requirements.
6.How does Aetrix verify that P4SMA220AHM3/H is sourced from the original manufacturer or authorized distributors?
All P4SMA220AHM3/H 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 P4SMA220AHM3/H meets industry standards.
7.What is the process for return or replacement of P4SMA220AHM3/H?
All P4SMA220AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA220AHM3/H, 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 P4SMA220AHM3/H part is unused and in its original packaging.
Return procedure for P4SMA220AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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