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Vishay General Semiconductor - Diodes Division P4SMA30CA-M3/5A
- Part No.:
- P4SMA30CA-M3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA30CA-M3/5A.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,947
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Product details
Overview
P4SMA30CA-M3/5A from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P4SMA series, designed for clamping voltage transients on signal or power lines. It features a 30 V standoff voltage (VWM), 33.3 V minimum breakdown voltage (VBR), 41.4 V maximum clamping voltage at 9.7 A peak pulse current, and 400 W peak pulse power capability with a 10/1000 µs waveform.
For engineers reviewing the P4SMA30CA-M3/5A datasheet, P4SMA30CA-M3/5A pinout, P4SMA30CA-M3/5A application, or P4SMA30CA-M3/5A equivalent, this device serves as a robust, AEC-Q101-qualified (via HM3 suffix) transient protection solution for automotive sensor interfaces, industrial I/O lines, telecom signal conditioning, and consumer power rail protection - where low-profile SMA packaging, fast response time, and repeatable clamping performance are critical.
Technical Context
The P4SMA30CA-M3/5A operates bidirectionally with symmetrical clamping characteristics in both polarities, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 µA at 25.6 V), while its MSL Level 1 rating supports lead-free reflow up to 260 °C.
Thermally, it exhibits a junction-to-ambient thermal resistance of 120 °C/W and a junction-to-lead resistance of 30 °C/W, requiring appropriate PCB copper pad area (0.2" × 0.2") for rated 400 W pulse handling. The device derates linearly above 25 °C ambient, maintaining safe operation up to 150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 25.6 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 28.5–31.5 V at 1.0 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 41.4 V at 9.7 A IPPM - Peak voltage seen by protected circuit during 10/1000 µs surge; determines downstream component stress. |
| PPPM (Peak Pulse Power) | 400 W - Sustained transient energy absorption capability under standard 10/1000 µs waveform with 0.01% duty cycle. |
| ID (Reverse Leakage) | <1.0 µA at VWM - Minimal standby current draw; preserves signal integrity and battery life in low-power systems. |
| TJ max | +150 °C - Maximum allowable junction temperature; enables use in under-hood automotive and industrial environments. |
| Package | SMA (DO-214AC) - Surface-mount package with 5.28 mm length, 3.99 mm width, and 2.29 mm height; compatible with automated placement. |
Pinout & Package
Package: SMA (DO-214AC), bidirectional configuration with no polarity marking; terminals are matte tin-plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative half-cycle) | Conducts during negative voltage excursions; forms symmetrical clamping path with cathode. |
| Cathode | Transient current entry (positive half-cycle) | Conducts during positive voltage excursions; completes bidirectional clamping loop with anode. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), or ungrounded power rails without polarity concerns. |
| 400 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) when properly mounted on 5.0 mm × 5.0 mm copper pads. |
| UL 497B Recognized (QVGQ2) | Validated for telecom and industrial surge protection applications requiring safety agency compliance. |
| AEC-Q101 qualified (HM3 suffix) | Qualified for automotive applications including body electronics, ADAS sensor interfaces, and infotainment power inputs. |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements. |
Applications
| Automotive Sensor Protection | Industrial I/O Protection |
|---|---|
Use Scenario: Protecting LIN bus or analog sensor outputs (e.g., temperature, pressure) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed directly at connector or IC input pins. Use Value: Limits transient voltage to ≤41.4 V, preventing damage to 3.3 V or 5 V sensor interface ICs while maintaining signal fidelity. |
Use Scenario: Safeguarding PLC digital input modules against induced surges from relay coil switching or motor noise. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V DC input lines prior to optocoupler or Schmitt trigger input stage. Use Value: Absorbs 400 W pulses without degradation, ensuring long-term reliability in factory automation environments. |
| Telecom Signal Line Protection | Consumer Power Rail Clamping |
Use Scenario: Shielding RS-485 transceiver data lines in base station equipment from lightning-induced common-mode transients. IC Role / Device Role / Timing Role: Differential pair TVS placed across A/B lines to suppress ±41.4 V common-mode spikes. Use Value: Symmetrical clamping maintains signal integrity and meets ITU-T K.21 basic protection requirements. |
Use Scenario: Clamping 5 V or 12 V USB/DC input rails in smart home hubs against ESD and hot-swap transients. IC Role / Device Role / Timing Role: Secondary protection device downstream of primary fuses or poly-switches. Use Value: Sub-1 µs response time limits voltage overshoot to safe levels for LDOs and microcontrollers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33CA | Higher VWM (28.2 V), higher VC (53.3 V at 7.5 A), same SMA footprint but larger SMB package (DO-214AA). | Lower power density (600 W vs. 400 W), less suitable for space-constrained PCBs. | Select when higher clamping margin is acceptable and board layout allows larger package. |
| 1.5KE33CA | Through-hole TO-218 package, 33 V VWM, 53.3 V VC at 22.5 A, 1500 W PPPM rating. | Not surface-mountable; requires manual assembly and larger board area; better for high-energy industrial mains protection. | Choose only for legacy through-hole designs or where >1 kW surge handling is mandatory. |
Compared with SMBJ33CA and 1.5KE33CA, the P4SMA30CA-M3/5A delivers optimal balance of compact SMA packaging, AEC-Q101 qualification, and precise 30 V system-level clamping - making it preferred for modern automotive and space-sensitive industrial designs requiring automated assembly and verified automotive reliability.
Availability
P4SMA30CA-M3/5A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial I/O modules, telecom signal conditioning, and consumer power rail protection requiring stable component supply, halogen-free RoHS compliance, and traceable sourcing.
Supply support for P4SMA30CA-M3/5A 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA series is engineered for high-reliability transient suppression in automotive, industrial, and telecom systems - delivering consistent clamping performance, AEC-Q101 qualification options, and robust surge handling in compact surface-mount packages.
FAQ
What is the clamping voltage of the P4SMA30CA-M3/5A under a 10/1000 µs surge?
The P4SMA30CA-M3/5A has a maximum clamping voltage (VC) of 41.4 V at 9.7 A peak pulse current under the standardized 10/1000 µs waveform. This value is measured with the device mounted on 0.2" × 0.2" copper pads and represents the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is the P4SMA30CA-M3/5A suitable for automotive applications?
Yes, the P4SMA30CA-M3/5A carries the HM3 suffix, indicating halogen-free, RoHS-compliant construction and full AEC-Q101 qualification. It is explicitly rated for automotive-grade reliability and used in body control modules, sensor interfaces, and infotainment power supplies where temperature cycling, vibration, and long-term surge immunity are required - confirmed by Vishay's qualification testing per AEC-Q101 Rev D.
What does the "CA" suffix mean in P4SMA30CA-M3/5A?
The "CA" suffix in P4SMA30CA-M3/5A denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., P4SMA30A), the CA version has no polarity marking and functions identically in either orientation, making it ideal for AC signal lines, differential buses, or floating power domains.
What is the thermal resistance of the P4SMA30CA-M3/5A?
The P4SMA30CA-M3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and a junction-to-lead resistance (RθJL) of 30 °C/W. These values assume mounting on the recommended 0.2" × 0.2" copper pad per terminal. Effective thermal management is essential to sustain 400 W pulse ratings and avoid thermal runaway during repetitive surge events.
Does the P4SMA30CA-M3/5A meet UL safety standards?
Yes, the P4SMA30CA-M3/5A is Underwriters Laboratories (UL) Recognized under file E136766 and standard UL 497B for protectors (QVGQ2 classification), covering both unidirectional and bidirectional configurations. This certification validates its suitability for telecom, industrial, and consumer applications requiring third-party safety compliance for transient protection circuits.
P4SMA30CA-M3/5A 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.4V
- Current - Peak Pulse (10/1000µs):
- 9.7A
- 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)
P4SMA30CA-M3/5A FAQ
1.How can I place an order for P4SMA30CA-M3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA30CA-M3/5A 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 P4SMA30CA-M3/5A reliable?
The price and inventory of P4SMA30CA-M3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA30CA-M3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA30CA-M3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA30CA-M3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA30CA-M3/5A?
P4SMA30CA-M3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA30CA-M3/5A 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 P4SMA30CA-M3/5A?
For technical support, including P4SMA30CA-M3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA30CA-M3/5A requirements.
6.How does Aetrix verify that P4SMA30CA-M3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA30CA-M3/5A 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 P4SMA30CA-M3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA30CA-M3/5A?
All P4SMA30CA-M3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA30CA-M3/5A, 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 P4SMA30CA-M3/5A part is unused and in its original packaging.
Return procedure for P4SMA30CA-M3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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