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Vishay General Semiconductor - Diodes Division P4SMA43CA-E3/61
- Part No.:
- P4SMA43CA-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA43CA-E3/61.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,226
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Product details
Overview
P4SMA43CA-E3/61 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 and power lines. It features a 43 V breakdown voltage (VBR = 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-E3/61 datasheet, P4SMA43CA-E3/61 pinout, P4SMA43CA-E3/61 application, or P4SMA43CA-E3/61 equivalent, key selection criteria include bidirectional clamping capability, SMA (DO-214AC) package compatibility, AEC-Q101 qualification status, thermal resistance (RθJA = 120 °C/W), and compliance with UL 497B surge protector classification.
Technical Context
The P4SMA43CA-E3/61 operates as a bidirectional avalanche diode, symmetrically clamping transient overvoltages in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at VWM), while its low incremental surge resistance enables fast response to ESD and lightning-induced surges.
Rated for 150 °C maximum junction temperature and MSL Level 1 moisture sensitivity, it supports reflow soldering up to 260 °C peak. The device delivers 400 W peak pulse power (derated to 300 W above 91 V) under 10/1000 µs waveform conditions when mounted on 5.0 mm × 5.0 mm copper pads - meeting IEC 61000-4-2/4-4/4-5 and UL 497B requirements for surge protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 40.9 V / 45.2 V at 1 mA - defines precise avalanche onset threshold for reliable bidirectional clamping |
| VWM | 36.8 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 59.3 V at 6.7 A - clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPPM | 400 W - peak transient power handling capacity, derated above 91 V to 300 W |
| RθJA | 120 °C/W - thermal resistance from junction to ambient, critical for PCB pad layout design |
| TJ max. | +150 °C - maximum allowable junction temperature, supporting operation in under-hood automotive environments |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 5.28 mm length and 4.50 mm width |
Pinout & Package
Package: SMA (DO-214AC), molded epoxy case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1, compatible with J-STD-002 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | One terminal of symmetrical PN junction; no polarity marking required for bidirectional operation |
| Cathode | Transient current exit (bidirectional) | Second terminal of symmetrical PN junction; identical electrical behavior to anode in reverse polarity |
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 (10/1000 µs) | Handles high-energy transients from inductive switching or lightning surges in industrial control systems |
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics |
| Glass passivated junction | Ensures long-term stability of breakdown voltage and low leakage across temperature and life cycles |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without pre-baking or special handling |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., temperature, pressure) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed directly at connector interface to shunt surge energy before reaching sensitive analog front-ends. Use Value: Maintains signal integrity by limiting transient voltage to ≤59.3 V during 6.7 A surges, preventing latch-up or damage to 3.3 V/5 V microcontrollers. |
Use Scenario: Safeguarding digital input/output channels of programmable logic controllers against field-wiring induced transients in factory automation. IC Role / Device Role / Timing Role: Primary surge suppression device on 24 V DC I/O lines, coordinated with upstream fuses and filtering capacitors. Use Value: Withstands repetitive 400 W surges per IEC 61000-4-4, enabling robust operation in electrically noisy manufacturing environments. |
| Telecom Line Interface Protection | Consumer Device USB/Signal Line Protection |
|
Use Scenario: Shielding Ethernet PHY interfaces and RS-485 transceivers in network switches and base stations from lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Secondary-level protection device installed after gas discharge tube (GDT) primary suppressors on differential pairs. Use Value: Fast 1 ns response time and low clamping voltage ensure compliance with ITU-T K.20/K.21 immunity requirements for telecom infrastructure. |
Use Scenario: Guarding USB 2.0 data lines and audio codec inputs in smart speakers and portable displays against ESD events per IEC 61000-4-2 ±8 kV contact discharge. IC Role / Device Role / Timing Role: ESD clamp integrated adjacent to connector pins to minimize trace inductance and preserve signal rise time. Use Value: Junction capacitance <100 pF at VWM prevents signal degradation on 480 Mbps USB data lines while providing full ±30 kV air/±15 kV contact ESD immunity. |
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 | Same VBR range (40.9–45.2 V) but SMB package (DO-214AA); 600 W PPPM, higher IPPM (10.3 A), RθJA = 80 °C/W | Higher power handling suits higher-energy surge environments; larger footprint requires PCB redesign | Select SMBJ43CA when system-level surge testing exceeds 400 W or thermal margin is constrained |
| 1.5KE43CA | Through-hole DO-201 package; same VBR/VC specs but 1500 W PPPM, 38.2 A IPPM, RθJA = 10 °C/W (with heatsink) | Designed for primary-level protection in AC mains or high-power DC rails; not suitable for dense SMT layouts | Choose 1.5KE43CA only for legacy through-hole designs or where board space allows discrete heatsinking |
Compared with SMBJ43CA and 1.5KE43CA, the P4SMA43CA-E3/61 offers optimal balance of compact SMA footprint, AEC-Q101 qualification, and sufficient 400 W surge rating for secondary-level protection - making it preferred for space-constrained automotive and industrial PCBs requiring RoHS-compliant SMT assembly.
Availability
P4SMA43CA-E3/61 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line interface circuits requiring stable component supply, AEC-Q101 compliance, and consistent RoHS-compliant manufacturing.
Supply support for P4SMA43CA-E3/61 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, TVS devices, and optoelectronics with emphasis on reliability, power efficiency, and automotive-grade qualification.
The P4SMA series was developed specifically for surface-mount transient suppression in space-constrained, high-reliability applications - delivering standardized performance across voltage grades while maintaining AEC-Q101 qualification and UL recognition for safety-critical protection.
FAQ
What is the breakdown voltage tolerance for P4SMA43CA-E3/61?
The P4SMA43CA-E3/61 has a specified breakdown voltage range of 40.9 V to 45.2 V at 1 mA test current, representing ±5% tolerance around the nominal 43 V rating. This tight distribution ensures predictable clamping behavior across production lots and supports reliable design margining in automotive and industrial surge protection circuits.
Is P4SMA43CA-E3/61 RoHS-compliant and halogen-free?
Yes, the P4SMA43CA-E3/61 carries the "E3" suffix, indicating RoHS-compliant construction per EU Directive 2011/65/EU. It is not halogen-free; for halogen-free versions, select the "M3" suffix variant (e.g., P4SMA43CA-M3/61), which meets IEC 61249-2-21 requirements while retaining identical electrical specifications.
Does P4SMA43CA-E3/61 require a heatsink for normal operation?
No, the P4SMA43CA-E3/61 is designed for self-sufficient operation without external heatsinking under typical surge conditions. Its RθJA of 120 °C/W assumes mounting on 5.0 mm × 5.0 mm copper pads per terminal - sufficient for intermittent 400 W pulses. Continuous power dissipation is limited to 3.3 W at 50 °C ambient, well below surge duty cycle requirements.
How does the bidirectional nature of P4SMA43CA-E3/61 affect PCB layout?
The P4SMA43CA-E3/61 has no polarity marking and functions identically in both directions, simplifying PCB layout by eliminating orientation checks during automated placement. Layout best practice is symmetric trace routing with equal-length paths to both terminals, minimizing loop inductance and ensuring balanced clamping response on differential or AC-coupled lines.
What is the maximum operating temperature for P4SMA43CA-E3/61 in automotive applications?
The P4SMA43CA-E3/61 supports a junction temperature range of –65 °C to +150 °C, fully compliant with AEC-Q101 requirements for under-hood automotive use. When deployed in engine control modules or transmission control units, its 150 °C TJ max. allows reliable operation even with ambient temperatures exceeding 125 °C, provided PCB copper area meets the 5.0 mm × 5.0 mm pad recommendation.
P4SMA43CA-E3/61 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-E3/61 FAQ
1.How can I place an order for P4SMA43CA-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA43CA-E3/61 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-E3/61 reliable?
The price and inventory of P4SMA43CA-E3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA43CA-E3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA43CA-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA43CA-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA43CA-E3/61?
P4SMA43CA-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA43CA-E3/61 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-E3/61?
For technical support, including P4SMA43CA-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA43CA-E3/61 requirements.
6.How does Aetrix verify that P4SMA43CA-E3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA43CA-E3/61 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-E3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA43CA-E3/61?
All P4SMA43CA-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA43CA-E3/61, 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-E3/61 part is unused and in its original packaging.
Return procedure for P4SMA43CA-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA43CA-E3/61 Tags
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