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Vishay General Semiconductor - Diodes Division P4SMA43A-M3/5A
- Part No.:
- P4SMA43A-M3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA43A-M3/5A.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,257
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Product details
Overview
P4SMA43A-M3/5A 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 43 V breakdown voltage (VBR = 40.9–45.2 V at 1 mA), 36.8 V stand-off voltage (VWM), 59.3 V maximum clamping voltage (VC) at 6.7 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the P4SMA43A-M3/5A datasheet, P4SMA43A-M3/5A pinout, P4SMA43A-M3/5A application, or P4SMA43A-M3/5A equivalent, this page delivers verified electrical parameters, thermal derating behavior, clamping performance under surge conditions, and AEC-Q101-qualified halogen-free alternatives for automotive-grade transient protection design.
Technical Context
This unidirectional TVS operates by avalanche breakdown above its VBR threshold, delivering low-clamp, fast-response suppression of ESD and inductive switching transients. Its glass-passivated junction ensures stable leakage (<1 µA at VWM) and repeatable breakdown characteristics across temperature.
Thermal resistance is RθJA = 120 °C/W (junction-to-ambient, on recommended 5.0 mm × 5.0 mm copper pads) and RθJL = 30 °C/W (junction-to-lead), supporting reliable operation up to TJ = 150 °C. The device meets MSL Level 1 per J-STD-020 and is halogen-free, RoHS-compliant (M3 suffix).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 40.9 V / 45.2 V at IT = 1 mA - defines precise avalanche onset range for predictable clamping initiation |
| VWM | 36.8 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 59.3 V at 6.7 A - clamping voltage during 10/1000 µs surge; limits downstream voltage stress |
| PPPM | 400 W - peak pulse power handling capability under standard surge waveform |
| IPPM | 6.7 A - peak pulse current corresponding to VC = 59.3 V |
| TJ max. | 150 °C - maximum junction temperature; enables use in high-ambient industrial environments |
| Package | SMA (DO-214AC) - surface-mount footprint compatible with automated assembly and IPC-7351B land patterns |
Pinout & Package
SMA (DO-214AC) package with cathode band marking on the unidirectional P4SMA43A-M3/5A; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-impedance return path; forms current path during reverse-biased transient clamp |
| Cathode | High-side transient input terminal | Connected to protected line (e.g., 36 V rail); avalanche conduction begins here when VAK > VBR |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 3 surges (1 kV/2 Ω) on 36 V systems |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes overvoltage stress on downstream 40 V-rated MOSFETs or LDOs |
| Halogen-free, RoHS-compliant (M3) | Meets environmental compliance requirements for industrial and automotive end equipment |
| AEC-Q101 qualified variant available | Supports automotive body electronics applications requiring validated reliability (P4SMA43AHM3_A/I) |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and reflow without baking; simplifies SMT manufacturing flow |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Protecting 36 V auxiliary rails in programmable logic controllers (PLCs) against relay coil flyback and load dump events. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input rail and ground to clamp transients before they reach DC/DC converters and microcontrollers. Use Value: Limits voltage excursion to ≤59.3 V during 6.7 A surge, preventing latch-up or gate oxide damage in 40 V-input buck regulators. |
Use Scenario: Safeguarding LIN bus transceivers and LED driver outputs in door module ECUs exposed to battery reverse polarity and jump-start spikes. IC Role / Device Role / Timing Role: Standoff protection device on 12 V supply line upstream of linear regulators and CAN/LIN interface ICs. Use Value: Withstands repetitive 400 W pulses while maintaining <1 µA leakage at 36.8 V, ensuring low quiescent current in always-on modules. |
| Telecom Remote Radio Unit (RRU) | Consumer Appliance Motor Drive |
Use Scenario: Shielding RS-485 transceivers and biasing networks in outdoor base station power interfaces from lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping element on +48 V phantom power line feeding remote PHY devices. Use Value: Fast avalanche response (<1 ns) and 59.3 V clamping prevent data corruption and transceiver latch-up during sub-microsecond transients. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in smart washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals to absorb inductive kickback energy. Use Value: 400 W rating handles repeated 100–200 ms motor stall surges without degradation; glass passivation ensures long-term parameter stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43A-M3/57 | Higher 600 W PPPM, SMB (DO-214AA) package, same VBR/VC specs | Requires larger PCB footprint; better suited for higher-energy surges where layout allows | Select when system-level surge testing exceeds IEC 61000-4-5 Level 4 and board space permits SMB footprint |
| P4SMA43AHM3_A/I | Identical electrical specs; AEC-Q101 qualified, halogen-free, same SMA package | Approved for automotive production; requires PPAP documentation and extended temperature validation | Choose for Tier-1 automotive designs requiring certified reliability and traceable lot history |
Compared with P4SMA43A-M3/5A, SMBJ43A-M3/57 offers higher surge margin but demands more board area, while P4SMA43AHM3_A/I provides identical protection with automotive qualification - enabling drop-in replacement only where AEC-Q101 compliance is mandated.
Availability
P4SMA43A-M3/5A is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, telecom infrastructure, and consumer appliance motor drives requiring stable component supply and halogen-free compliance.
Supply support for P4SMA43A-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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA Series was developed to deliver standardized, high-power surface-mount TVS protection for cost-sensitive industrial and automotive applications - balancing clamping performance, thermal robustness, and automated assembly compatibility.
FAQ
What is the maximum clamping voltage of the P4SMA43A-M3/5A under a 10/1000 µs surge?
The P4SMA43A-M3/5A has a maximum clamping voltage (VC) of 59.3 V at 6.7 A peak pulse current under the standard 10/1000 µs waveform. This value is measured per Figure 1 in the Vishay datasheet 88367 and reflects worst-case voltage seen by downstream circuitry during transient events - critical for validating voltage margins of protected ICs and MOSFETs.
Is the P4SMA43A-M3/5A suitable for automotive applications?
The P4SMA43A-M3/5A itself is commercial-grade and not AEC-Q101 qualified; however, its automotive-qualified counterpart P4SMA43AHM3_A/I shares identical electrical specifications and SMA packaging. For production automotive use, P4SMA43AHM3_A/I must be selected to meet qualification requirements - the P4SMA43A-M3/5A is appropriate for prototyping or non-safety-critical aftermarket designs.
What does the "M3" suffix indicate in P4SMA43A-M3/5A?
The "M3" suffix in P4SMA43A-M3/5A denotes halogen-free, RoHS-compliant construction with matte tin-plated leads meeting J-STD-002 solderability and JESD 22-B102 whisker resistance Class 2. It also confirms compliance with Vishay's material categorization standard (doc. 99912) - distinguishing it from the E3 (RoHS, non-halogen-free) and HE3/HM3 (AEC-Q101) variants.
How does the thermal resistance of P4SMA43A-M3/5A affect its surge handling capability?
The P4SMA43A-M3/5A has RθJA = 120 °C/W (on 5.0 mm × 5.0 mm copper pads) and RθJL = 30 °C/W. These values directly limit repetitive surge duty cycle: above 25 °C ambient, derating per Figure 2 reduces allowable PPPM to 300 W above 91 V - though for P4SMA43A-M3/5A (≤91 V), full 400 W remains usable within TJ ≤ 150 °C limits.
Can P4SMA43A-M3/5A be used in bidirectional configurations?
No - P4SMA43A-M3/5A is strictly unidirectional, indicated by the "A" suffix and cathode band marking. For bidirectional protection, the CA-suffixed variant P4SMA43CA-M3/5A must be used; it exhibits symmetrical clamping in both polarities and no polarity marking. Interchanging these parts will result in improper protection or device failure under reverse transients.
P4SMA43A-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 36.8V
- Voltage - Breakdown (Min):
- 40.9V
- Voltage - Clamping (Max) @ Ipp:
- 59.3V
- Current - Peak Pulse (10/1000µs):
- 6.7A
- 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)
P4SMA43A-M3/5A FAQ
1.How can I place an order for P4SMA43A-M3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA43A-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 P4SMA43A-M3/5A reliable?
The price and inventory of P4SMA43A-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 P4SMA43A-M3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA43A-M3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA43A-M3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA43A-M3/5A?
P4SMA43A-M3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA43A-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 P4SMA43A-M3/5A?
For technical support, including P4SMA43A-M3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA43A-M3/5A requirements.
6.How does Aetrix verify that P4SMA43A-M3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA43A-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 P4SMA43A-M3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA43A-M3/5A?
All P4SMA43A-M3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA43A-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 P4SMA43A-M3/5A part is unused and in its original packaging.
Return procedure for P4SMA43A-M3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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