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Vishay General Semiconductor - Diodes Division P4SMA43CAHE3/61
- Part No.:
- P4SMA43CAHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA43CAHE3/61.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,489
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Product details
Overview
P4SMA43CAHE3/61 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in the P4SMA series, designed for clamping voltage transients on signal or power lines. It features a 43 V breakdown voltage (VBR), 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 interfaces in automotive and industrial electronics.
For engineers reviewing the P4SMA43CAHE3/61 datasheet, P4SMA43CAHE3/61 pinout, P4SMA43CAHE3/61 application, or P4SMA43CAHE3/61 equivalent, this device serves as an AEC-Q101-qualified, RoHS-compliant bidirectional TVS for robust ESD and surge protection in space-constrained SMA (DO-214AC) layouts without polarity marking.
Technical Context
The P4SMA43CAHE3/61 operates as a bidirectional avalanche diode, delivering symmetrical clamping in both forward and reverse directions with no cathode/anode distinction. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance under repetitive 10/1000 µs transients.
Rated for -65 °C to +150 °C junction temperature, it achieves 400 W peak pulse power (derated to 300 W above 91 V) on 0.2" × 0.2" copper pads and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. It exhibits 0.101 %/°C temperature coefficient of VBR and <1.0 µA reverse leakage at VWM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VBR) | 40.9 V to 45.2 V at 1.0 mA test current - defines precise avalanche initiation threshold for bidirectional clamping |
| Standoff Voltage (VWM) | 36.8 V - maximum continuous working voltage before significant leakage begins |
| Clamping Voltage (VC) | 59.3 V at 6.7 A IPPM - limits transient voltage seen by protected circuitry during 10/1000 µs surge |
| Peak Pulse Power (PPPM) | 400 W (10/1000 µs) - sustains high-energy surges without failure when mounted per recommended pad layout |
| Maximum Leakage (ID) | <1.0 µA at VWM - ensures minimal standby power loss and signal integrity in high-impedance circuits |
| Package | SMA (DO-214AC) - surface-mount package with 5.28 mm length, 4.50 mm width, and 2.29 mm height for automated placement |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock |
Pinout & Package
Package: SMA (DO-214AC), bidirectional configuration with no polarity marking - terminals are symmetric and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (bidirectional) | Common terminal pair | Both ends function identically; no cathode band - enables flexible PCB layout without orientation constraints |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables protection against IEC 61000-4-5 Level 4 surges (4 kV line-to-line) without derating in standard layouts |
| Glass passivated junction | Ensures long-term stability of VBR and low parameter drift across temperature and lifetime |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking - reduces manufacturing overhead |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS modules requiring zero-defect reliability |
| Low profile (2.29 mm height) | Fits beneath low-clearance shields and in dense PCB regions where height is constrained to ≤2.5 mm |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to limit transient voltage before it reaches signal conditioning circuitry. Use Value: Maintains signal integrity below 59.3 V during 400 W surges, preventing latch-up or damage to 3.3 V/5 V microcontrollers and ADC front-ends. |
Use Scenario: Safeguarding digital input/output channels of programmable logic controllers against field-induced surges from solenoid valves and motor drives. IC Role / Device Role / Timing Role: Fast-response TVS shunting transient energy away from optocoupler inputs and relay driver outputs. Use Value: Clamps sub-100 ns transients within 1.5 ns response time, preserving isolation barrier integrity and enabling >100 kV/µs immunity per IEC 61000-4-4. |
| Consumer Power Adapter Interface | Telecom Line Card Surge Protection |
Use Scenario: Shielding USB-C PD and AC-DC adapter secondary-side feedback paths from ESD and fast transient bursts during plug insertion. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF) bidirectional clamp on isolated feedback traces to prevent regulator instability or overvoltage shutdown. Use Value: Adds <1.0 µA leakage at 36.8 V, avoiding bias current errors in TL431-based voltage sensing networks. |
Use Scenario: Front-end protection of Ethernet PHYs and xDSL line drivers exposed to lightning-induced surges on outdoor telecom lines. IC Role / Device Role / Timing Role: Primary-stage TVS in hybrid protection circuits, coordinated with GDTs and PTCs to handle multi-kA threats. Use Value: Withstands 6.7 A peak pulse current at 59.3 V clamping, reducing downstream MOV stress and extending system-level surge life beyond 100k operations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43CA | 600 W peak pulse power, SMB (DO-214AA) package - 20 % larger footprint, 15 % higher clamping voltage (64.5 V) | Better suited for higher-energy surges but requires PCB area increase and may exceed voltage tolerance of 3.3 V logic | Select when surge energy exceeds 400 W and board space permits larger package |
| 1.5KE43CA | 1500 W peak pulse power, axial DO-15 package - through-hole mounting, 3× higher clamping (73.5 V), no AEC-Q101 qualification | Used in legacy industrial power supplies where manual assembly and higher clamping are acceptable | Choose only for non-automotive, non-SMT designs needing higher single-pulse energy handling |
Compared with SMBJ43CA and 1.5KE43CA, the P4SMA43CAHE3/61 delivers optimal balance of AEC-Q101 compliance, compact SMA footprint, and precise 59.3 V clamping - making it the preferred choice for new automotive and high-density industrial designs where layout space and voltage margin are critical.
Availability
P4SMA43CAHE3/61 is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC I/O modules, and consumer power adapter interface protection requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for P4SMA43CAHE3/61 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 performance.
The P4SMA series was developed to deliver high-power, low-profile TVS solutions for automotive and industrial markets - prioritizing AEC-Q101 qualification, tight parametric tolerances, and compatibility with high-speed automated assembly.
FAQ
What is the clamping voltage of P4SMA43CAHE3/61 at its rated peak pulse current?
The P4SMA43CAHE3/61 has a maximum clamping voltage (VC) of 59.3 V at 6.7 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88367 and ensures protected circuits remain below critical voltage thresholds during surge events. The P4SMA43CAHE3/61 maintains this clamping performance across its qualified operating temperature range.
Is P4SMA43CAHE3/61 suitable for automotive applications?
Yes, P4SMA43CAHE3/61 is AEC-Q101 qualified and explicitly designated for automotive use with the "HE3" suffix indicating RoHS-compliant and AEC-Q101-qualified construction. It undergoes rigorous testing for temperature cycling, humidity bias, and mechanical shock - making P4SMA43CAHE3/61 appropriate for engine control units, body electronics, and ADAS sensor interfaces.
Does P4SMA43CAHE3/61 have polarity markings on the package?
No, P4SMA43CAHE3/61 is a bidirectional TVS and carries no polarity marking such as a cathode band. Its SMA (DO-214AC) package features symmetric terminals, allowing either end to be connected to line or ground without functional impact - simplifying layout and eliminating orientation errors during automated placement.
What is the standoff voltage rating for P4SMA43CAHE3/61?
The standoff voltage (VWM) for P4SMA43CAHE3/61 is 36.8 V, representing the maximum DC or RMS voltage that can be continuously applied without exceeding 1.0 µA reverse leakage current. This rating ensures reliable operation in 36 V nominal systems (e.g., 24 V automotive with 100 % tolerance margin) while maintaining low standby loss. The P4SMA43CAHE3/61 holds this specification across its full -65 °C to +150 °C operating junction temperature range.
How does the thermal resistance of P4SMA43CAHE3/61 affect its power dissipation capability?
P4SMA43CAHE3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W, meaning it can dissipate 3.3 W continuously on infinite heatsink at 50 °C ambient - but real-world PCB layout dominates thermal performance. When mounted on the recommended 0.2" × 0.2" copper pads, the P4SMA43CAHE3/61 sustains its full 400 W peak pulse rating without thermal runaway, provided duty cycle remains ≤0.01 %.
P4SMA43CAHE3/61 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:
- 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)
P4SMA43CAHE3/61 FAQ
1.How can I place an order for P4SMA43CAHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA43CAHE3/61 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 P4SMA43CAHE3/61 reliable?
The price and inventory of P4SMA43CAHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA43CAHE3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA43CAHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA43CAHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA43CAHE3/61?
P4SMA43CAHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA43CAHE3/61 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 P4SMA43CAHE3/61?
For technical support, including P4SMA43CAHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA43CAHE3/61 requirements.
6.How does Aetrix verify that P4SMA43CAHE3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA43CAHE3/61 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 P4SMA43CAHE3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA43CAHE3/61?
All P4SMA43CAHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA43CAHE3/61, 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 P4SMA43CAHE3/61 part is unused and in its original packaging.
Return procedure for P4SMA43CAHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA43CAHE3/61 Tags
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