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Vishay General Semiconductor - Diodes Division P4SMA43CAHE3/5A
- Part No.:
- P4SMA43CAHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA43CAHE3/5A.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,420
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Product details
Overview
P4SMA43CAHE3/5A from Vishay General Semiconductor is a bidirectional 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 = 40.9–45.2 V at 1 mA), 36.8 V standoff voltage (VWM), 59.3 V clamping voltage (VC) at 6.7 A peak pulse current, and 400 W peak pulse power (10/1000 µs waveform), suitable for protecting automotive sensor interfaces and industrial I/O lines.
For engineers reviewing the P4SMA43CAHE3/5A datasheet, P4SMA43CAHE3/5A pinout, P4SMA43CAHE3/5A application, or P4SMA43CAHE3/5A equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, low incremental surge resistance, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped shunt protector, responding within picoseconds to transient overvoltages induced by inductive switching or ESD events. Its bidirectional symmetry ensures identical clamping behavior in both polarities, with no polarity marking required on the SMA package.
It delivers 400 W peak pulse power under standardized 10/1000 µs waveform conditions when mounted on 0.2" × 0.2" copper pads, derating linearly above 25 °C ambient per Fig. 2, and maintains stable operation across -65 °C to +150 °C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 40.9 V / 45.2 V at 1 mA - defines precise voltage threshold where avalanche conduction begins in either direction |
| VWM | 36.8 V - maximum continuous reverse working voltage before leakage exceeds 1 µA, ensuring no false triggering during normal operation |
| VC @ IPPM | 59.3 V at 6.7 A - clamped voltage seen by protected circuit during worst-case 10/1000 µs surge, limiting stress on downstream ICs |
| PPPM | 400 W - peak transient energy absorption capacity, enabling robust protection against IEC 61000-4-5 Level 3 surges |
| IPPM | 6.7 A - maximum non-repetitive surge current the device safely conducts without degradation |
| TJ max. | +150 °C - maximum junction temperature rating, supporting operation in under-hood automotive environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22 standards |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability requirements. Bidirectional construction means no cathode/anode marking; terminals are electrically symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path | Both terminals serve identically as input/output nodes for bidirectional surge current; no polarity orientation required during placement |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without external polarity management |
| AEC-Q101 qualification | Confirms suitability for automotive applications including engine control modules, ADAS sensors, and body electronics |
| 400 W peak pulse power | Supports compliance with IEC 61000-4-5 (10/1000 µs) surge immunity up to 1 kV open-circuit voltage in typical PCB layouts |
| MSL Level 1 (260 °C peak) | Allows standard lead-free reflow soldering without moisture sensitivity concerns or baking requirements |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage (<1 µA at VWM) over lifetime and temperature extremes |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor outputs (e.g., pressure, temperature) from load-dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Shunt TVS element placed directly at connector interface to clamp fast-rising transients before they reach signal conditioning ICs. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V microcontrollers and ADC front-ends while maintaining signal integrity below 36.8 V operating window. |
Use Scenario: Safeguarding digital input channels on programmable logic controllers exposed to 24 V DC field wiring with long cable runs. IC Role / Device Role / Timing Role: Primary overvoltage clamp on each discrete input channel, coordinated with series current-limiting resistors. Use Value: Absorbs repetitive 400 W surges without parameter drift, enabling >100,000 surge cycles per IEC 61000-4-5 test requirements. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Shielding RS-485 transceivers and Ethernet PHYs from lightning-induced surges on outdoor data lines. IC Role / Device Role / Timing Role: First-stage transient suppressor ahead of gas discharge tube (GDT) or secondary TVS array in multi-stage protection architecture. Use Value: Fast response (<1 ns) limits let-through voltage to <59.3 V, reducing stress on downstream GDT trigger threshold and improving system-level surge margin. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines, HVAC blowers, and power tools. IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals or H-bridge outputs to clamp inductive kickback. Use Value: Withstands 40 A non-repetitive forward surge (IFSM) and dissipates 3.3 W continuously, enabling reliable operation in high-duty-cycle appliance cycles. |
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 600 W peak pulse power; larger SMB (DO-214AA) package; 120 °C/W RθJA | Better suited for higher-energy surges but requires more PCB area; less ideal for space-constrained automotive modules | Select when surge energy exceeds 400 W or thermal budget allows larger footprint; not drop-in due to different pad layout |
| 1.5KE43CA | Through-hole TO-218 package; 1500 W peak pulse power; higher VC (70.1 V); slower response | Designed for legacy board designs and high-power industrial mains protection, not SMT-optimized | Choose only for through-hole systems requiring higher energy handling; incompatible with automated SMT assembly |
Compared with P4SMA43CAHE3/5A, SMBJ43CA offers greater surge margin in a larger footprint, while 1.5KE43CA provides higher power in a non-SMT form factor-neither is pin-compatible, but both serve overlapping protection functions in distinct mechanical and thermal contexts.
Availability
P4SMA43CAHE3/5A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line interfaces, and consumer appliance motor control circuits requiring stable component supply with AEC-Q101 assurance and RoHS compliance.
Supply support for P4SMA43CAHE3/5A 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The P4SMA Series targets cost-sensitive, high-volume transient protection needs in automotive, industrial, and communications equipment, combining AEC-Q101 qualification with standardized SMT packaging for scalable manufacturing.
FAQ
What does the "CA" suffix mean in P4SMA43CAHE3/5A?
The "CA" suffix in P4SMA43CAHE3/5A indicates a bidirectional configuration: the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., P4SMA43A), it has no polarity marking and is used where AC signals, floating lines, or undefined voltage polarity require clamping in both directions without external circuitry.
Is P4SMA43CAHE3/5A qualified for automotive use?
Yes, P4SMA43CAHE3/5A is AEC-Q101 qualified, as confirmed by Vishay's documentation (Revision 09-Jan-2024, Doc. #88367). This qualification covers stress tests including temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge (ESD), making P4SMA43CAHE3/5A suitable for under-hood and cabin electronics in passenger vehicles and commercial vehicles.
What is the clamping voltage of P4SMA43CAHE3/5A under surge conditions?
The clamping voltage (VC) of P4SMA43CAHE3/5A is 59.3 V at 6.7 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value represents the maximum voltage imposed on the protected circuit during a worst-case transient event and is measured with the device mounted on 0.2" × 0.2" copper pads per JEDEC guidelines.
How does the HE3 suffix affect P4SMA43CAHE3/5A's compliance status?
"HE3" in P4SMA43CAHE3/5A denotes RoHS-compliant construction with AEC-Q101 qualification. It replaces older "E3" commercial-grade versions and meets automotive reliability requirements while maintaining the same electrical specs and SMA (DO-214AC) package. The "/5A" denotes 7500-unit tape-and-reel packaging on 13-inch reels for high-volume SMT assembly.
Can P4SMA43CAHE3/5A replace unidirectional TVS diodes like P4SMA43A?
No-P4SMA43CAHE3/5A is bidirectional and cannot directly replace unidirectional P4SMA43A in circuits requiring polarity-specific clamping, such as DC power rail protection. Substitution would require verifying that the protected node is truly floating or AC-coupled; otherwise, unintended conduction paths may occur. Always validate circuit topology before interchanging uni- and bidirectional TVS devices.
P4SMA43CAHE3/5A 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:
- Discontinued at Digi-Key
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA43CAHE3/5A FAQ
1.How can I place an order for P4SMA43CAHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA43CAHE3/5A 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 P4SMA43CAHE3/5A reliable?
The price and inventory of P4SMA43CAHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA43CAHE3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA43CAHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA43CAHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA43CAHE3/5A?
P4SMA43CAHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA43CAHE3/5A 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 P4SMA43CAHE3/5A?
For technical support, including P4SMA43CAHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA43CAHE3/5A requirements.
6.How does Aetrix verify that P4SMA43CAHE3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA43CAHE3/5A 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 P4SMA43CAHE3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA43CAHE3/5A?
All P4SMA43CAHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA43CAHE3/5A, 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 P4SMA43CAHE3/5A part is unused and in its original packaging.
Return procedure for P4SMA43CAHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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