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Vishay General Semiconductor - Diodes Division P4SMA43CA-M3/61
- Part No.:
- P4SMA43CA-M3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA43CA-M3/61.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,996
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Product details
Overview
P4SMA43CA-M3/61 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features a 43 V breakdown voltage (VBR min/max = 40.9–45.2 V at 1 mA), 36.8 V standoff 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 signal lines in industrial and automotive electronics.
For engineers reviewing the P4SMA43CA-M3/61 datasheet, P4SMA43CA-M3/61 pinout, P4SMA43CA-M3/61 application, or P4SMA43CA-M3/61 equivalent, this device delivers verified bidirectional transient suppression with AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, MSL Level 1 moisture sensitivity, and low incremental surge resistance for robust ESD and lightning surge protection in space-constrained layouts.
Technical Context
The P4SMA43CA-M3/61 operates as a symmetrical avalanche diode, conducting equally in both directions when transient voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and fast response time (<1 ns), while the DO-214AC package supports automated placement and meets UL 94 V-0 flammability rating.
Thermal performance is defined by RθJA = 120 °C/W (junction-to-ambient) and RθJL = 30 °C/W (junction-to-lead), enabling reliable operation up to TJ = +150 °C. The device sustains repetitive 400 W pulses at ≤0.01% duty cycle and derates linearly above 25 °C ambient per Figure 2 of the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 40.9 V / 45.2 V at IT = 1 mA - defines precise clamping onset threshold in both directions |
| VWM | 36.8 V - maximum continuous reverse working voltage before leakage exceeds 1 µA |
| VC @ IPPM | 59.3 V at 6.7 A (10/1000 µs) - actual clamped voltage seen by protected circuit during surge |
| PPPM | 400 W - peak transient energy absorption capability under standard surge waveform |
| IPPM | 6.7 A - maximum non-repetitive surge current the device safely conducts without failure |
| TJ max. | +150 °C - maximum junction temperature supporting operation in under-hood automotive environments |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 5.0 mm × 5.0 mm copper pad thermal relief |
Pinout & Package
SMA (DO-214AC) package: molded plastic body with matte tin-plated leads, no polarity marking for bidirectional configuration; terminals are solderable per J-STD-002 and JESD 22-B102, qualified to JESD 201 Class 2 whisker test.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (either direction) | One terminal of symmetrical avalanche junction; interchangeable with cathode in bidirectional use |
| Cathode | Transient current exit (either direction) | Second terminal of symmetrical junction; no functional distinction from anode in CA devices |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 400 W peak pulse power | Handles IEC 61000-4-5 Level 4 surges (4 kV line-earth) when properly mounted on 5.0 mm × 5.0 mm pads |
| AEC-Q101 qualified (HM3) | Validated for automotive powertrain and chassis applications requiring zero defect reliability and extended temperature cycling |
| Halogen-free & RoHS-compliant | Meets global environmental regulations including JEDEC J-STD-609A Class 1 for bromine/chlorine content |
| MSL Level 1 (260 °C peak) | Allows standard reflow soldering without pre-baking, reducing manufacturing complexity and cost |
Applications
| Automotive Sensor Signal Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential or single-ended signal traces upstream of interface ICs. Use Value: Limits induced transients to ≤59.3 V, preventing latch-up or gate oxide damage in downstream RS-485 transceivers or ADC front-ends. |
Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against field-wiring surges and relay coil flyback. IC Role / Device Role / Timing Role: Parallel-connected TVS on each input channel, clamping transients before optocoupler or Schmitt trigger inputs. Use Value: Withstands 400 W surges without degradation, maintaining long-term reliability in factory-floor environments with frequent EMI events. |
| Telecom Line Interface Protection | Consumer Power Adapter ESD Guard |
Use Scenario: Shielding Ethernet PHY magnetics or xDSL line drivers from lightning-induced surges on outdoor-facing ports. IC Role / Device Role / Timing Role: First-stage protection device between connector and common-mode choke, rated for bidirectional telecom waveforms. Use Value: Fast <1 ns response and low VC/VBR ratio (1.46×) minimize stress on secondary protection stages like GDTs or polymer PTCs. |
Use Scenario: Adding secondary-level surge immunity to USB-C or barrel-jack inputs in wall adapters subjected to user-handling ESD. IC Role / Device Role / Timing Role: Low-capacitance (≈100 pF at VWM) TVS placed directly at connector, shunting HBM ±8 kV discharges. Use Value: Halogen-free M3 construction ensures compliance with IEC 62368-1 fire safety requirements while maintaining compact SMA footprint. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43CA | Higher PPPM = 600 W, larger SMB (DO-214AA) package, 10% higher VC (64.5 V) | Better suited for high-energy surges where PCB area allows larger footprint | Select when surge energy exceeds 400 W or thermal margin requires lower RθJA |
| 1.5KE43CA | Through-hole TO-204AE (DO-15), PPPM = 1500 W, VC = 69.4 V, higher leakage at VWM | Used in legacy designs or high-power AC mains protection where manual assembly is acceptable | Choose only if SMT is not required and board space permits axial-leaded mounting |
Compared with SMBJ43CA and 1.5KE43CA, the P4SMA43CA-M3/61 offers optimal balance of compact SMA footprint, AEC-Q101 qualification, and 400 W surge handling - making it preferred for new automotive and industrial SMT designs where board area and reliability certification are critical.
Availability
P4SMA43CA-M3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power adapter ESD guard circuits requiring stable component supply, halogen-free compliance, and AEC-Q101 validation.
Supply support for P4SMA43CA-M3/61 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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA Series targets surface-mount transient suppression in space-constrained, high-reliability applications - engineered for automotive, industrial, and telecom systems needing certified, repeatable clamping performance with minimal layout overhead.
FAQ
What does the "CA" suffix mean in P4SMA43CA-M3/61?
The "CA" suffix in P4SMA43CA-M3/61 indicates a bidirectional configuration: the device functions identically in both forward and reverse directions, making it suitable for protecting AC-coupled or floating signal lines without polarity constraints. This differs from unidirectional "A" variants, which conduct only in one direction and require correct cathode orientation. The CA version has no polarity marking on the SMA package body.
Is P4SMA43CA-M3/61 qualified for automotive use?
Yes, P4SMA43CA-M3/61 is AEC-Q101 qualified - confirmed by its "HM3" suffix, which denotes halogen-free, RoHS-compliant, and automotive-grade construction. It undergoes stress testing for temperature cycling, humidity, mechanical shock, and surge endurance per AEC-Q101 Rev D, supporting deployment in engine control units, body electronics, and ADAS sensor interfaces.
What is the maximum clamping voltage of P4SMA43CA-M3/61 under surge conditions?
The maximum clamping voltage (VC) of P4SMA43CA-M3/61 is 59.3 V at 6.7 A peak pulse current with a 10/1000 µs waveform. This value represents the highest voltage imposed on the protected circuit during standardized surge testing and is measured across the device terminals under specified test conditions per Figure 1 and Table on page 2 of Vishay document 88367.
How does the M3 suffix affect P4SMA43CA-M3/61's compliance status?
The "M3" suffix in P4SMA43CA-M3/61 specifies halogen-free, RoHS-compliant construction meeting JEDEC J-STD-609A Class 1 requirements for bromine and chlorine content. It also confirms compliance with JESD 201 Class 2 whisker resistance and MSL Level 1 handling (peak reflow temperature 260 °C), distinguishing it from commercial-grade "E3" variants that lack halogen-free certification.
Can P4SMA43CA-M3/61 replace P4SMA43A-M3/61 in a design?
No - P4SMA43CA-M3/61 and P4SMA43A-M3/61 are not interchangeable. The "CA" variant is bidirectional with symmetrical clamping, while the "A" variant is unidirectional and requires correct cathode orientation. Substituting one for the other risks improper surge conduction or open-circuit behavior in AC or floating applications; layout and schematic must match the device's polarity architecture.
P4SMA43CA-M3/61 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:
- -
- Bidirectional Channels:
- 1
- 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)
P4SMA43CA-M3/61 FAQ
1.How can I place an order for P4SMA43CA-M3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA43CA-M3/61 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 P4SMA43CA-M3/61 reliable?
The price and inventory of P4SMA43CA-M3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA43CA-M3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA43CA-M3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA43CA-M3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA43CA-M3/61?
P4SMA43CA-M3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA43CA-M3/61 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 P4SMA43CA-M3/61?
For technical support, including P4SMA43CA-M3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA43CA-M3/61 requirements.
6.How does Aetrix verify that P4SMA43CA-M3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA43CA-M3/61 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 P4SMA43CA-M3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA43CA-M3/61?
All P4SMA43CA-M3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA43CA-M3/61, 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 P4SMA43CA-M3/61 part is unused and in its original packaging.
Return procedure for P4SMA43CA-M3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA43CA-M3/61 Tags
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