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Vishay General Semiconductor - Diodes Division P4SMA24A-E3/5A
- Part No.:
- P4SMA24A-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA24A-E3/5A.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,500
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Product details
Overview
P4SMA24A-E3/5A from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for robust overvoltage protection in 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 clamping voltage at 12 A peak pulse current, 400 W peak pulse power (10/1000 µs), and SMA (DO-214AC) package - deployed in automotive sensor interfaces, industrial I/O protection, and DC power rail surge suppression.
For engineers reviewing the P4SMA24A-E3/5A datasheet, P4SMA24A-E3/5A pinout, P4SMA24A-E3/5A application, or P4SMA24A-E3/5A equivalent, key selection criteria include clamping performance under 10/1000 µs transients, thermal resistance (RθJA = 120 °C/W), unidirectional polarity marking, AEC-Q101 qualification status, and RoHS-compliant matte tin plating per J-STD-002.
Technical Context
The P4SMA24A-E3/5A operates as a unidirectional avalanche diode with glass-passivated junction, enabling fast response to ESD and lightning-induced transients. Its clamping action begins at VBR (22.8–25.2 V) and limits line voltage to ≤33.2 V at 12 A IPPM, maintaining system integrity during repetitive 0.01% duty-cycle surges.
Designed for surface-mount assembly on 0.2" × 0.2" copper pads, it delivers 400 W peak pulse power below 91 V (derated to 300 W above), supports 40 A non-repetitive forward surge (8.3 ms half-sine), and sustains operation from –65 °C to +150 °C junction temperature with MSL Level 1 moisture sensitivity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 20.5 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC bias margin. |
| VBR (Breakdown Voltage) | 22.8–25.2 V at 1 mA - Avalanche onset range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 33.2 V at 12 A IPPM - Peak voltage seen by protected circuit during 10/1000 µs surge; critical for IC survival. |
| PPPM (Peak Pulse Power) | 400 W (10/1000 µs) - Surge energy handling capacity; derates linearly above 25 °C ambient. |
| ID (Reverse Leakage) | 1.0 µA at 20.5 V - Low leakage preserves signal integrity and minimizes standby power loss. |
| RθJA | 120 °C/W - Thermal resistance from junction to ambient; informs PCB copper pad sizing for thermal management. |
| Polarity | Unidirectional - Cathode marked by band; blocks reverse conduction, enables DC-biased protection topologies. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H); cathode identified by molded band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to protected line's low-side or ground reference; completes clamping loop during overvoltage. |
| Cathode | Avalanche conduction terminal / high-side connection | Marked by band; ties to positive rail or signal line; conducts when transient exceeds VBR, shunting current to ground. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables protection against IEC 61000-4-5 Level 4 surges (4 kV, 2 Ω source) on 24 V systems without derating. |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity stress. |
| AEC-Q101 qualified (P4SMA24A-E3/5A variant) | Validated for automotive-grade deployment in engine control, body electronics, and ADAS sensor modules. |
| MSL Level 1, 260 °C reflow compatible | Supports standard lead-free SMT assembly without pre-baking or special handling. |
| RoHS-compliant, halogen-free option available | Meets EU RoHS Directive 2011/65/EU and JEDEC JS709C material restrictions for green manufacturing. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp transients before reaching sensitive analog front-end or transceiver ICs. Use Value: Limits induced voltage to ≤33.2 V during 12 V system load dump (ISO 7637-2 Pulse 5a), preventing latch-up or gate oxide damage in 3.3 V/5 V interface ICs. |
Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Mounted across input terminals (signal-to-ground) to absorb 400 W transients while preserving signal edge integrity for 10 kHz switching detection. Use Value: Maintains <1 µA leakage at 20.5 V, ensuring clean logic-level recognition; clamps within nanoseconds to prevent false triggering of optocouplers or Schmitt triggers. |
| DC Power Rail Protection | Consumer USB Port ESD Suppression |
|
Use Scenario: Secondary overvoltage protection on 24 V DC power distribution boards downstream of primary DC-DC converters. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing residual transients that bypass upstream filters, especially during hot-swap or connector arcing events. Use Value: Withstands 40 A 8.3 ms surge (IFSM), protecting MOSFET switches and electrolytic capacitors from catastrophic failure during accidental short-circuit recovery. |
Use Scenario: ESD protection on 5 V USB VBUS and D+/D− lines in portable audio docks and smart home hubs. IC Role / Device Role / Timing Role: Unidirectional placement on VBUS to suppress contact discharge (IEC 61000-4-2 ±15 kV) without interfering with USB 2.0 signaling. Use Value: 33.2 V clamping prevents overvoltage on USB controller VDD pins; low capacitance (<100 pF at 0 V) avoids signal integrity degradation at 480 Mbps. |
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), higher VC (38.9 V at 10.3 A), SMB package (larger footprint, lower RθJA = 85 °C/W) | Better thermal performance but requires PCB layout change; less suitable for space-constrained automotive modules. | Select when board area allows larger SMB package and higher clamping voltage is acceptable for protected ICs. |
| 1.5KE24A (ON Semiconductor) | Through-hole DO-201 package, same VWM/VC specs, higher PPPM (1500 W), but no AEC-Q101 qualification | Not suitable for automated SMT production or automotive qualification requirements; limited to prototyping or legacy through-hole designs. | Choose only for manual assembly or cost-sensitive non-automotive applications where AEC-Q101 is not mandated. |
Compared with SMBJ24A and 1.5KE24A, the P4SMA24A-E3/5A uniquely combines AEC-Q101 qualification, SMA footprint compatibility with high-density layouts, and verified 400 W surge capability - making it optimal for volume automotive and industrial SMT deployments requiring traceable compliance and thermal predictability.
Availability
P4SMA24A-E3/5A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and 24 V DC power rail protection requiring stable component supply, full RoHS compliance, and AEC-Q101 validation.
Supply support for P4SMA24A-E3/5A 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, precision, and automotive-grade qualification.
The P4SMA Series is engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where consistent clamping, low leakage, and AEC-Q101 compliance are mandatory design requirements.
FAQ
What is the clamping voltage of the P4SMA24A-E3/5A under a 10/1000 µs surge?
The P4SMA24A-E3/5A clamps to a maximum of 33.2 V when subjected to a 12 A peak pulse current with a 10/1000 µs waveform. This value is measured per standard test conditions (TA = 25 °C, mounted on 0.2" × 0.2" copper pads) and defines the upper voltage limit imposed on protected circuitry during surge events. The P4SMA24A-E3/5A maintains this clamping performance consistently across its rated junction temperature range.
Is the P4SMA24A-E3/5A qualified for automotive applications?
Yes, the P4SMA24A-E3/5A is AEC-Q101 qualified, as confirmed by Vishay's documentation for the P4SMA24A variant with E3/5A packaging. This qualification validates its suitability for automotive use cases including engine control units, body electronics, and ADAS sensor interfaces where reliability under thermal cycling, vibration, and electrical stress is required. The P4SMA24A-E3/5A meets all stress tests defined in AEC-Q101 Rev D.
What does the "E3/5A" suffix indicate in P4SMA24A-E3/5A?
The "E3" denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads meeting J-STD-002 solderability standards. The "/5A" specifies packaging in a 13-inch diameter plastic tape and reel containing 7500 units - optimized for high-volume SMT placement. This differs from /61 (7-inch reel, 1800 units) and supports lean manufacturing flow for large-scale production of the P4SMA24A-E3/5A.
How does the P4SMA24A-E3/5A compare to bidirectional TVS diodes like P4SMA24CA?
The P4SMA24A-E3/5A is unidirectional and features a cathode band for polarity identification, whereas P4SMA24CA is bidirectional with no polarity marking and symmetrical clamping in both directions. The P4SMA24A-E3/5A offers lower leakage (<1 µA at VWM) and is preferred for DC-biased lines like 24 V power rails or single-ended signal paths. Bidirectional variants suit AC-coupled or differential lines such as RS-485 or Ethernet PHYs.
What is the thermal resistance of the P4SMA24A-E3/5A, and how does it affect PCB layout?
The P4SMA24A-E3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on minimum recommended 0.2" × 0.2" copper pads per terminal. To maintain TJ ≤ 150 °C under worst-case 3.3 W steady-state dissipation, designers must ensure adequate copper area and airflow - or reduce duty cycle for pulsed operation. The P4SMA24A-E3/5A's thermal performance is validated per JEDEC JESD51-7 standards.
P4SMA24A-E3/5A 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:
- 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-E3/5A FAQ
1.How can I place an order for P4SMA24A-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA24A-E3/5A 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 P4SMA24A-E3/5A reliable?
The price and inventory of P4SMA24A-E3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA24A-E3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA24A-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA24A-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA24A-E3/5A?
P4SMA24A-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA24A-E3/5A 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 P4SMA24A-E3/5A?
For technical support, including P4SMA24A-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA24A-E3/5A requirements.
6.How does Aetrix verify that P4SMA24A-E3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA24A-E3/5A 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 P4SMA24A-E3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA24A-E3/5A?
All P4SMA24A-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA24A-E3/5A, 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 P4SMA24A-E3/5A part is unused and in its original packaging.
Return procedure for P4SMA24A-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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