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Vishay General Semiconductor - Diodes Division P4SMA12CA-M3/5A
- Part No.:
- P4SMA12CA-M3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA12CA-M3/5A.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,349
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Product details
Overview
P4SMA12CA-M3/5A from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, rated for 12 V standoff voltage (VWM), 13.3 V minimum breakdown voltage (VBR), and 400 W peak pulse power (10/1000 µs). It clamps transients to ≤20.1 V at 19.9 A peak pulse current and is used for ESD and surge protection on bidirectional signal lines in automotive sensor interfaces and industrial I/O circuits.
For engineers reviewing the P4SMA12CA-M3/5A datasheet, P4SMA12CA-M3/5A pinout, P4SMA12CA-M3/5A application, or P4SMA12CA-M3/5A equivalent, key selection criteria include bidirectional clamping capability, 13.3–14.7 V breakdown range at 1 mA, low 1 µA max reverse leakage at 10.2 V, AEC-Q101 qualification (via HM3 suffix), and halogen-free RoHS compliance.
Technical Context
This TVS operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown characteristics and low leakage across temperature.
Designed for transient suppression per IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and ISO 7637-2 (automotive surge), it delivers 400 W peak pulse power with 10/1000 µs waveform at TA = 25 °C - derated to 300 W above 91 V - and supports repetitive surges at 0.01 % duty cycle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 10.2 V - maximum continuous reverse voltage before conduction begins; defines safe operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 13.3–14.7 V at IT = 1 mA - precise voltage threshold where device enters avalanche breakdown to clamp transients |
| VC (Clamping Voltage) | 20.1 V at IPPM = 19.9 A - maximum voltage seen by protected circuit during worst-case 10/1000 µs surge |
| PPPM (Peak Pulse Power) | 400 W - transient energy-handling capacity under standardized 10/1000 µs waveform; enables robust surge immunity |
| ID (Reverse Leakage) | 1.0 µA max at VWM = 10.2 V - negligible standby current that avoids loading sensitive signal sources |
| TJ max | 150 °C - maximum junction temperature supporting operation in under-hood automotive and high-ambient industrial environments |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 5.0 mm × 5.0 mm copper pad thermal design for reliable power dissipation |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case meeting UL 94 V-0 flammability rating; matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (either direction) | One terminal of symmetrical avalanche junction; accepts surge current regardless of polarity |
| Cathode | Transient current exit (either direction) | Second terminal of symmetrical junction; completes low-impedance path during clamping event |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC, differential, or floating signal lines without polarity constraints or external circuitry |
| 400 W peak pulse power (10/1000 µs) | Withstands high-energy transients common in automotive load-dump and industrial switching noise environments |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, humidity testing, and mechanical shock |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for modern electronics manufacturing and end-of-life disposal |
| MSL Level 1 (J-STD-020) | Zero moisture sensitivity; allows unlimited floor life and reflow at 260 °C peak without preconditioning |
Applications
| Automotive Sensor Interface Protection | Industrial Digital I/O Surge Suppression |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor outputs (e.g., pressure, temperature) from ISO 7637-2 pulses and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at connector or IC pin to shunt transients before they reach signal conditioning circuitry. Use Value: Clamps 10/1000 µs surges to ≤20.1 V while maintaining <1 µA leakage at 10.2 V, preserving signal integrity and ADC accuracy. |
Use Scenario: Safeguarding PLC digital input modules against inductive kickback from solenoids, relays, and motor drivers. IC Role / Device Role / Timing Role: Primary transient suppressor on 24 V DC input lines, mounted adjacent to connector to minimize trace inductance. Use Value: Delivers 400 W pulse handling with 20.1 V clamping to prevent latch-up or damage to optocouplers and microcontroller GPIOs. |
| Telecom Line Interface Protection | Consumer USB/DisplayPort ESD Guarding |
Use Scenario: Shielding RS-485/RS-422 transceivers in base stations and network equipment from lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-level protector downstream of gas discharge tubes or primary MOVs, providing fast-response clamping. Use Value: Sub-1 ns response time and low 20.1 V clamping ensure transceiver ICs remain within absolute maximum ratings during multi-kV transients. |
Use Scenario: Adding board-level ESD immunity to USB 2.0 data lines or DisplayPort AUX channels in laptops and docking stations. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed inline with differential pairs to avoid signal distortion. Use Value: 1 µA leakage at 10.2 V prevents DC bias shift; symmetrical structure eliminates need for orientation-aware layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12CA | Same VWM (10.2 V) and VBR (13.3–14.7 V), but SMB package (DO-214AA); 600 W PPPM rating | Higher power handling suits higher-energy surge environments; larger footprint requires PCB redesign | Select when system-level surge tests exceed 400 W and thermal management allows larger package |
| 1.5KE12CA | Through-hole DO-201 package; same electrical specs but 1500 W PPPM; higher junction-to-ambient thermal resistance | Not suitable for automated SMT assembly; intended for prototyping or legacy through-hole designs | Choose only for manual assembly or retrofit scenarios where SMT is unavailable |
Compared with P4SMA12CA-M3/5A, SMBJ12CA offers higher surge margin in a slightly larger SMT package, while 1.5KE12CA provides legacy through-hole compatibility at the cost of automation support and board space efficiency.
Availability
P4SMA12CA-M3/5A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial digital I/O modules, telecom line protection, and consumer port ESD guarding requiring stable component supply, halogen-free compliance, and AEC-Q101 reliability assurance.
Supply support for P4SMA12CA-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 targets cost-sensitive, high-volume transient suppression needs in automotive, industrial, and communications systems - delivering standardized TVS performance in compact, automated-assembly-ready packages.
FAQ
What is the clamping voltage of P4SMA12CA-M3/5A at its rated peak pulse current?
The P4SMA12CA-M3/5A clamps to a maximum of 20.1 V at its specified peak pulse current of 19.9 A under a 10/1000 µs waveform. This value is measured per standard test conditions in the Vishay datasheet (Document Number: 88367, Rev. 09-Jan-2024) and defines the upper voltage limit imposed on protected circuitry during surge events. The P4SMA12CA-M3/5A maintains this clamping performance across its operational temperature range.
Is P4SMA12CA-M3/5A suitable for automotive applications?
Yes, P4SMA12CA-M3/5A is qualified to AEC-Q101 when ordered with the HM3 suffix - which applies to this part number - confirming its suitability for automotive environments including engine control units, body electronics, and ADAS sensor interfaces. It meets requirements for temperature cycling, humidity resistance, and mechanical robustness. The P4SMA12CA-M3/5A also supports MSL Level 1 handling and lead-free reflow up to 260 °C.
How does the bidirectional configuration of P4SMA12CA-M3/5A affect its use in circuit design?
The bidirectional nature of P4SMA12CA-M3/5A means it conducts identically in both polarities, eliminating the need for polarity-aware placement or additional components like series diodes. This simplifies layout for AC-coupled signals, differential buses (e.g., RS-485), or floating inputs. Unlike unidirectional TVS diodes, the P4SMA12CA-M3/5A has no cathode band marking and functions symmetrically - a key advantage in noise-prone bidirectional communication paths.
What is the maximum reverse leakage current for P4SMA12CA-M3/5A at its stand-off voltage?
The P4SMA12CA-M3/5A exhibits a maximum reverse leakage current of 1.0 µA at its stand-off voltage (VWM) of 10.2 V and ambient temperature of 25 °C. This low leakage ensures minimal loading on high-impedance signal sources such as sensor outputs or precision reference lines. The P4SMA12CA-M3/5A maintains tight leakage control across its full operating temperature range (-65 °C to +150 °C).
Does P4SMA12CA-M3/5A require special PCB layout considerations?
Yes - optimal performance of P4SMA12CA-M3/5A requires mounting on minimum recommended copper pads: 0.2" × 0.2" (5.0 mm × 5.0 mm) per terminal, per Vishay's thermal design guidance. Short, direct traces between the P4SMA12CA-M3/5A and protected node reduce inductance and improve clamping speed. Avoid routing sensitive signals near the TVS ground return path to prevent coupling. The P4SMA12CA-M3/5A benefits from dedicated ground plane connection beneath the device.
P4SMA12CA-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):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 24A
- 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)
P4SMA12CA-M3/5A FAQ
1.How can I place an order for P4SMA12CA-M3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA12CA-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 P4SMA12CA-M3/5A reliable?
The price and inventory of P4SMA12CA-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 P4SMA12CA-M3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA12CA-M3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA12CA-M3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA12CA-M3/5A?
P4SMA12CA-M3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA12CA-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 P4SMA12CA-M3/5A?
For technical support, including P4SMA12CA-M3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA12CA-M3/5A requirements.
6.How does Aetrix verify that P4SMA12CA-M3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA12CA-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 P4SMA12CA-M3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA12CA-M3/5A?
All P4SMA12CA-M3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA12CA-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 P4SMA12CA-M3/5A part is unused and in its original packaging.
Return procedure for P4SMA12CA-M3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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