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Vishay General Semiconductor - Diodes Division P4SMA24A-E3/61
- Part No.:
- P4SMA24A-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA24A-E3/61.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA24A-E3/61 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features a 24 V standoff voltage (VWM), 22.8–25.2 V breakdown voltage (VBR) at 1 mA, 33.2 V maximum clamping voltage at 12 A peak pulse current, and 400 W peak pulse power capability with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the P4SMA24A-E3/61 datasheet, P4SMA24A-E3/61 pinout, P4SMA24A-E3/61 application, or P4SMA24A-E3/61 equivalent, key selection criteria include unidirectional polarity, 20.5 V VWM rating, 1 µA max reverse leakage at VWM, AEC-Q101 qualification status (via HE3 suffix variants), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a clamping device that enters avalanche conduction when transient voltage exceeds its breakdown threshold (22.8–25.2 V), limiting downstream voltage to ≤33.2 V at 12 A. Its glass-passivated junction ensures stable performance under repetitive surge conditions and meets MSL level 1 per J-STD-020 with 260 °C reflow peak.
The device delivers 400 W peak pulse power (10/1000 µs) up to 91 V; above that, derated to 300 W. Thermal resistance is 120 °C/W (junction-to-ambient) and 30 °C/W (junction-to-lead), supporting operation from –65 °C to +150 °C with 3.3 W steady-state power dissipation on infinite heatsink at 50 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 20.5 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working range. |
| VBR (Breakdown Voltage) | 22.8–25.2 V at 1 mA - Voltage at which device enters controlled avalanche; tight tolerance enables precise overvoltage protection. |
| VC (Clamping Voltage) | 33.2 V at IPPM = 12 A - Peak voltage seen by protected circuit during 10/1000 µs transient; determines stress on downstream components. |
| PPPM (Peak Pulse Power) | 400 W - Surge energy handling capacity with standard 10/1000 µs waveform; sufficient for IEC 61000-4-5 Level 3 surges. |
| ID (Reverse Leakage) | 1.0 µA max at VWM - Low leakage preserves system efficiency and avoids false triggering in high-impedance circuits. |
| TJ max | +150 °C - Maximum junction temperature; supports reliable operation in enclosed industrial enclosures without forced cooling. |
| RθJA | 120 °C/W - Thermal resistance indicating need for adequate PCB copper area (0.2" × 0.2") to maintain safe junction temperature under surge duty. |
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 indicated by band; polarity critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction; connected to lower-potential side of protected line. | Used only in forward-biased ESD events; not active during normal reverse-biased clamping operation. |
| Cathode | Current exit point during avalanche clamping; connected to higher-potential side (e.g., VCC rail or signal line). | Defines unidirectional polarity - must be oriented toward the source of transient threat to enable proper clamping path. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables robust protection against lightning-induced surges and inductive switching spikes in 24 V systems. |
| Glass passivated junction | Ensures long-term stability and low parameter drift across temperature and lifetime, critical for automotive and industrial deployments. |
| AEC-Q101 qualified variant available | Supports automotive-grade reliability requirements (e.g., P4SMA24AHE3_A); P4SMA24A-E3/61 is commercial-grade but shares identical electrical specs. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; simplifies SMT manufacturing flow. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving protection margin for sensitive 3.3 V or 5 V logic interfaces. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of gate drivers and microcontroller I/O lines from inductive kickback during relay or solenoid switching in PLC cabinets. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 24 V supply rail and ground, clamping transients within 1 ns response time. Use Value: Limits voltage excursion to ≤33.2 V, preventing latch-up or permanent damage to 32-bit ARM-based MCUs and isolated gate drivers. |
Use Scenario: Safeguarding LIN bus transceivers and sensor inputs (e.g., ambient temperature, door position) against load dump and jump-start surges. IC Role / Device Role / Timing Role: Standoff-rated TVS on 12 V power input to BCM sub-board, absorbing 400 W pulses without degradation. Use Value: Maintains <1 µA leakage at 13.5 V nominal, avoiding battery drain while meeting ISO 7637-2 pulse 1/2/5a immunity requirements. |
| Telecom Power Feeds | Consumer Appliance Control Boards |
Use Scenario: Input-stage surge suppression on 24 V PoE-powered remote radio units exposed to outdoor lightning coupling. IC Role / Device Role / Timing Role: Primary clamping device on DC input before DC/DC converter, coordinated with upstream GDT or MOV. Use Value: Withstands ≥1000 surges at rated PPPM, enabling >10-year field life in telecom infrastructure without maintenance. |
Use Scenario: Protecting touch controller and display interface lines in smart washing machines subject to user ESD and pump motor noise. IC Role / Device Role / Timing Role: Localized TVS on 5 V USB-C and I²C lines, mounted directly at connector entry points. Use Value: 33.2 V clamping voltage ensures no overvoltage reaches 5 V tolerant GPIOs, eliminating firmware lockups during ESD events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A (Bourns) | Same VWM (20.5 V), slightly higher VC (36.2 V at 11.8 A), SMB package (DO-214AA) - 1.6 mm taller, same footprint width. | Higher clamping voltage reduces protection margin for 24 V logic; preferred where board height allows larger package for improved thermal mass. | Select SMBJ24A if layout permits 2.6 mm height increase and higher thermal inertia is needed for repetitive surge environments. |
| 1.5SMC24A (ON Semiconductor) | Identical VWM (20.5 V), same VC (33.2 V), but SMC (DO-214AB) package - 2.5 mm wider, requires larger pad layout. | Higher 1500 W PPPM rating irrelevant for single-event protection; larger size adds cost and space without benefit for typical 400 W use cases. | Choose 1.5SMC24A only when legacy SMC footprint exists and redesign is prohibited; otherwise P4SMA24A-E3/61 offers optimal size/performance balance. |
Compared with SMBJ24A and 1.5SMC24A, P4SMA24A-E3/61 delivers identical clamping performance in the smallest surface-mount footprint (SMA), enabling dense layouts in space-constrained industrial controllers while maintaining full compatibility with high-speed pick-and-place equipment.
Availability
P4SMA24A-E3/61 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power feeds requiring stable component supply, RoHS-compliant sourcing, and consistent lead-time visibility.
Supply support for P4SMA24A-E3/61 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, precision, and application-specific optimization.
The P4SMA Series targets cost-sensitive, high-volume transient protection needs in consumer, industrial, and automotive electronics - engineered for automated assembly, low-profile integration, and repeatable clamping performance across temperature and life cycle.
FAQ
What is the maximum clamping voltage of P4SMA24A-E3/61 under surge conditions?
The P4SMA24A-E3/61 has a maximum clamping voltage (VC) of 33.2 V at 12 A peak pulse current with a 10/1000 µs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during transient events. The clamping performance remains stable across its operating temperature range (–65 °C to +150 °C) due to low temperature coefficient (0.094 %/°C) of VBR.
Is P4SMA24A-E3/61 suitable for automotive applications?
P4SMA24A-E3/61 itself is a commercial-grade part (E3 suffix), but Vishay offers the functionally identical P4SMA24AHE3_A variant qualified to AEC-Q101 for automotive use. Both share identical electrical characteristics including VWM (20.5 V), VBR (22.8–25.2 V), and VC (33.2 V). For automotive designs requiring qualification evidence, specify the HE3 suffix version; P4SMA24A-E3/61 remains appropriate for non-automotive industrial or consumer applications.
What does the "-E3/61" suffix indicate in P4SMA24A-E3/61?
The "-E3" suffix denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads, while "/61" specifies packaging in 7-inch diameter plastic tape and reel containing 1800 units. This format aligns with standard SMT handling requirements and ensures compatibility with high-speed pick-and-place machines. The E3 marking also confirms compliance with JESD 201 Class 2 whisker testing and J-STD-002 solderability standards.
How does P4SMA24A-E3/61 compare to bidirectional TVS diodes like P4SMA24CA?
P4SMA24A-E3/61 is unidirectional and intended for DC line protection where polarity is fixed (e.g., 24 V supply rails), offering tighter leakage control (1 µA max at VWM) and optimized clamping in one direction. In contrast, P4SMA24CA is bidirectional, suited for AC or floating signal lines (e.g., RS-485), with symmetric clamping but higher leakage (1 µA per direction). Selection depends on circuit topology - unidirectional provides better DC blocking and lower cost for polarized rails.
What PCB layout guidance applies to P4SMA24A-E3/61 for optimal thermal and electrical performance?
For reliable operation, mount P4SMA24A-E3/61 on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve specified thermal resistance (RθJA = 120 °C/W) and 400 W pulse rating. Avoid narrow traces between the TVS and protected node - use short, wide connections to minimize inductance and preserve fast response. Ground plane continuity beneath the device improves heat spreading and reduces impedance in the clamping path.
P4SMA24A-E3/61 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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.2V
- Current - Peak Pulse (10/1000µs):
- 12A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA24A-E3/61 FAQ
1.How can I place an order for P4SMA24A-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA24A-E3/61 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 P4SMA24A-E3/61 reliable?
The price and inventory of P4SMA24A-E3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA24A-E3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA24A-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA24A-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA24A-E3/61?
P4SMA24A-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA24A-E3/61 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 P4SMA24A-E3/61?
For technical support, including P4SMA24A-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA24A-E3/61 requirements.
6.How does Aetrix verify that P4SMA24A-E3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA24A-E3/61 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 P4SMA24A-E3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA24A-E3/61?
All P4SMA24A-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA24A-E3/61, 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 P4SMA24A-E3/61 part is unused and in its original packaging.
Return procedure for P4SMA24A-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA24A-E3/61 Tags
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