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Vishay General Semiconductor - Diodes Division P4SMA220AHM3_A/H
- Part No.:
- P4SMA220AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA220AHM3_A/H.pdf
- Description:
- TVS DIODE 185VWM 328VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,102
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Product details
Overview
P4SMA220AHM3_A/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 328 A peak pulse current (IPPM) under 10/1000 µs waveform. It delivers 400 W peak pulse power, features AEC-Q101 qualification, and protects MOSFETs and sensor signal lines in automotive powertrain control units.
For engineers reviewing the P4SMA220AHM3_A/H datasheet, P4SMA220AHM3_A/H pinout, P4SMA220AHM3_A/H application, or P4SMA220AHM3_A/H equivalent, this page provides verified electrical parameters, thermal derating behavior, clamping performance at rated surge current, and validated automotive-grade alternatives for ESD and load-dump protection design.
Technical Context
The P4SMA220AHM3_A/H operates as a unidirectional clamping device with cathode-band polarity marking, leveraging glass-passivated junction technology for stable avalanche response. Its 120 °C/W junction-to-ambient thermal resistance requires PCB copper pad area optimization per Vishay's recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) layout to sustain 400 W pulses.
Clamping occurs at 328 V maximum (VC) when subjected to 328 A (IPPM), delivering low incremental surge resistance and sub-nanosecond response time. It meets J-STD-020 MSL Level 1 and supports reflow up to 260 °C peak, with halogen-free, RoHS-compliant construction under HM3 suffix.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 185 V - Maximum continuous reverse voltage before conduction begins; defines operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 209–231 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients above 185 V. |
| VC (Clamping Voltage) | 328 V at IPPM - Peak voltage seen by protected circuit during 328 A surge; determines downstream component voltage stress. |
| IPPM (Peak Pulse Current) | 328 A (10/1000 µs) - Surge current handling capacity; validates robustness against ISO 7637-2 Pulse 5a load-dump events. |
| PPPM (Peak Pulse Power) | 400 W - Sustained transient energy absorption capability; derates linearly above 25 °C ambient per Fig. 2. |
| TJ max | 150 °C - Maximum junction temperature limit; constrains continuous power dissipation to 3.3 W at 50 °C ambient. |
| Package | SMA (DO-214AC) - Surface-mount outline with 2.54 mm lead pitch; compatible with automated pick-and-place and reflow. |
Pinout & Package
Package: SMA (DO-214AC), molded epoxy case meeting UL 94 V-0; matte tin-plated leads solderable per J-STD-002; cathode identified by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias | Connected to system ground or low-side reference; enables unidirectional clamping from line-to-ground. |
| Cathode | Current exit point in forward bias; marked with band | Connected to protected line (e.g., 24 V supply rail); defines directionality and clamping polarity. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and chassis applications per stress test requirements including HTOL, TCT, and ESD. |
| Halogen-free & RoHS-compliant (HM3) | Meets IEC 61249-2-21 and JEDEC J-STD-204; eliminates brominated flame retardants without compromising thermal stability. |
| 400 W peak pulse power (10/1000 µs) | Supports full ISO 16750-2 load-dump immunity testing at 12 V/24 V systems without derating. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns response), critical for protecting high-speed CAN FD interfaces. |
| MSL Level 1 (260 °C peak) | Enables single-pass lead-free reflow without moisture sensitivity concerns; no baking required prior to assembly. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Digital Input Module |
|---|---|
Use Scenario: Protection of 24 V supply rail against alternator load dump transients (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and DC-DC input stage. Use Value: Limits transient voltage to ≤328 V, preventing overvoltage failure of upstream buck controller ICs rated for 36 V absolute max. |
Use Scenario: Shielding 24 V digital input channels from field-wiring induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Line-to-ground transient suppressor on optocoupler input side. Use Value: Absorbs 328 A surge without latch-up, preserving signal integrity and enabling >100,000-cycle surge endurance. |
| Telecom Remote Radio Head (RRH) | Medical Infusion Pump Motor Driver |
Use Scenario: Safeguarding RS-485 communication lines exposed to lightning-induced surges in outdoor base stations. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS used in back-to-back configuration for differential line protection. Use Value: Clamps common-mode transients within 328 V while maintaining <1 pF junction capacitance to avoid signal distortion at 10 Mbps. |
Use Scenario: Suppressing inductive kickback from brushed DC motor commutation in battery-powered infusion devices. IC Role / Device Role / Timing Role: Cathode-connected to motor H-bridge high-side switch output; anode to ground. Use Value: Withstands repetitive 328 A pulses at 0.01% duty cycle, eliminating need for external snubbers and reducing BOM count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ220A | Same VWM (185 V), higher VC (356 V), SMB package (DO-214AA), 600 W PPPM rating | Higher clamping voltage increases downstream IC stress; larger footprint limits high-density layouts | Select when higher pulse energy tolerance is required and board space permits larger package |
| SMCJ220A | Same VWM (185 V), identical VC (328 V), SMC package (DO-214AB), 1500 W PPPM rating | Same clamping performance but 3.7× larger footprint; suited for primary-level surge arrest, not secondary IC protection | Choose for front-end AC/DC input protection where PCB area is unconstrained and energy levels exceed 400 W |
Compared with P4SMA220AHM3_A/H, SMBJ220A trades lower clamping precision for higher energy handling in a moderately larger package, while SMCJ220A delivers triple the pulse power in a significantly larger outline-making P4SMA220AHM3_A/H optimal for space-constrained, automotive-grade secondary-side protection where precise 328 V clamping is critical.
Availability
P4SMA220AHM3_A/H is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC input modules, telecom remote radio heads, and medical infusion pump motor drivers requiring stable component supply with AEC-Q101 traceability and halogen-free compliance.
Supply support for P4SMA220AHM3_A/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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on reliability, automotive qualification, and application-specific performance.
The P4SMA series targets cost-sensitive, high-volume transient protection in automotive, industrial, and telecom systems, balancing compact SMA packaging, AEC-Q101 compliance, and standardized 10/1000 µs surge ratings.
FAQ
What is the clamping voltage of the P4SMA220AHM3_A/H at its rated peak pulse current?
The P4SMA220AHM3_A/H has a maximum clamping voltage (VC) of 328 V when subjected to its rated peak pulse current (IPPM) of 328 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 worst-case surge events.
Is the P4SMA220AHM3_A/H suitable for automotive applications?
Yes, the P4SMA220AHM3_A/H is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction validated for automotive use. It is explicitly rated for engine control unit (ECU) and body electronics applications subject to ISO 7637-2 and ISO 16750-2 stress conditions.
What does the "_A/H" suffix in P4SMA220AHM3_A/H indicate?
The "_A/H" suffix denotes the revision code (A) and tape-and-reel packaging format (H = 7-inch diameter reel, 1800 units per reel). Per Vishay's ordering table on page 3 of document 88367, this suffix confirms the part is supplied in standard surface-mount carrier tape compatible with high-speed pick-and-place equipment.
How does the thermal resistance of the P4SMA220AHM3_A/H affect its power handling?
The P4SMA220AHM3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W. When mounted on Vishay's recommended 0.2" × 0.2" copper pads, it sustains 400 W peak pulses; however, continuous power must be limited to 3.3 W at 50 °C ambient to maintain TJ ≤ 150 °C, per its thermal characteristics table.
Can the P4SMA220AHM3_A/H be used in bidirectional configurations?
No, the P4SMA220AHM3_A/H is a unidirectional TVS diode, indicated by the "A" suffix (not "CA"). Its cathode band marking and specified electrical characteristics apply only for anode-to-cathode reverse-bias operation. For bidirectional protection, Vishay specifies CA-suffix variants such as P4SMA220CA.
P4SMA220AHM3_A/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:
- Active
- 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_A/H FAQ
1.How can I place an order for P4SMA220AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA220AHM3_A/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_A/H reliable?
The price and inventory of P4SMA220AHM3_A/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_A/H is usually 5 days.
3.What payment methods are accepted for P4SMA220AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA220AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA220AHM3_A/H?
P4SMA220AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA220AHM3_A/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_A/H?
For technical support, including P4SMA220AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA220AHM3_A/H requirements.
6.How does Aetrix verify that P4SMA220AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA220AHM3_A/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_A/H meets industry standards.
7.What is the process for return or replacement of P4SMA220AHM3_A/H?
All P4SMA220AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA220AHM3_A/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_A/H part is unused and in its original packaging.
Return procedure for P4SMA220AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA220AHM3_A/H Tags
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