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Vishay General Semiconductor - Diodes Division P4SMA75CA-E3/61
- Part No.:
- P4SMA75CA-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA75CA-E3/61.pdf
- Description:
- TVS DIODE 64.1VWM 104VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA75CA-E3/61 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for clamping voltage transients on signal and power lines. It features a 75 V standoff voltage (VWM), 82.5 V minimum breakdown voltage (VBR), 104 V maximum clamping voltage (VC) at 3.9 A peak pulse current, and 400 W peak pulse power capability with a 10/1000 µs waveform - deployed in automotive sensor interfaces, industrial I/O protection, and telecom line surge suppression.
For engineers reviewing the P4SMA75CA-E3/61 datasheet, P4SMA75CA-E3/61 pinout, P4SMA75CA-E3/61 application, or P4SMA75CA-E3/61 equivalent, key selection criteria include bidirectional clamping symmetry, MSL Level 1 moisture sensitivity, AEC-Q101 qualification status, and DO-214AC package thermal performance under repetitive surge conditions.
Technical Context
This device operates as a voltage-clamped crowbar during transient events, leveraging a glass-passivated silicon junction to achieve sub-nanosecond response time and low incremental surge resistance. Its bidirectional structure ensures symmetrical clamping in both polarities without polarity marking, enabling use on AC-coupled or floating signal paths.
The P4SMA75CA-E3/61 delivers stable clamping up to 150 °C junction temperature, with thermal resistance of 120 °C/W (junction-to-ambient) and 30 °C/W (junction-to-lead), and meets J-STD-020 MSL Level 1 reflow profile (peak 260 °C). It is RoHS-compliant and rated for 0.01% duty cycle repetitive surges above 91 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 75 V - Maximum continuous reverse working voltage before clamping initiates; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 71.3–78.8 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on across production lot. |
| VC (Clamping Voltage) | 104 V at 3.9 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; directly limits stress on downstream ICs. |
| PPPM (Peak Pulse Power) | 400 W - Sustained energy absorption capacity under standardized 10/1000 µs transient; derated to 300 W above 91 V. |
| ID (Reverse Leakage) | 1.0 µA max at 75 V - Minimal DC loading on signal lines; preserves high-impedance interface integrity. |
| TJ max | 150 °C - Maximum junction temperature rating; supports operation in under-hood automotive and industrial ambient environments. |
| Package | SMA (DO-214AC) - Surface-mount outline with 5.0 mm × 5.0 mm copper pad thermal footprint; enables automated placement and reflow compatibility. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, MSL Level 1, 260 °C peak reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | Not used in TVS clamping mode; relevant only for forward conduction verification (VF = 3.5 V at 25 A, unidirectional only). |
| Cathode | Current exit terminal in forward bias | Not marked on bidirectional devices like P4SMA75CA-E3/61; terminals are functionally symmetric for transient suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Electrical symmetry in both directions (VBR and VC identical for ± polarity); eliminates need for polarity-aware layout. |
| 400 W peak pulse power | Robust surge handling per 10/1000 µs waveform; supports IEC 61000-4-5 Level 3/4 compliance when combined with proper PCB layout. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns response); critical for protecting high-speed logic and analog inputs. |
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and ADAS sensor interfaces; includes temperature cycling and HTRB testing. |
| MSL Level 1 | Zero floor life limitation; may be stored indefinitely at ≤30 °C/60% RH and assembled without baking prior to reflow. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between signal line and ground, responding within <1 ns to suppress transients exceeding 75 V. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V microcontrollers and analog front-ends while maintaining signal integrity during normal operation. |
Use Scenario: Shielding digital input/output channels of programmable logic controllers from inductive switching spikes (e.g., relay coils, solenoids). IC Role / Device Role / Timing Role: Standoff-mode protector on 24 V DC I/O lines, clamping surges up to 104 V to safeguard FPGA or ASIC GPIO structures. Use Value: Enables >100,000 surge cycles without degradation, reducing field failure rates in factory automation equipment. |
| Telecom Line Interface | Consumer USB/Display Port ESD Guard |
Use Scenario: Secondary protection on Ethernet PHY differential pairs or RS-485 data lines exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Coordinated clamping stage downstream of gas discharge tube (GDT), limiting let-through voltage to <104 V during 10/1000 µs events. Use Value: Meets ITU-T K.21 basic protection requirements when paired with appropriate series impedance; reduces system-level test failures. |
Use Scenario: Board-level ESD protection for USB 2.0 data lines and DisplayPort auxiliary channels in laptops and docking stations. IC Role / Device Role / Timing Role: Low-capacitance (typ. 80 pF at 0 V) bidirectional clamp placed adjacent to connector, shunting ±8 kV contact discharge energy. Use Value: Maintains signal rise/fall times <1 ns while passing USB 2.0 eye diagram compliance; avoids jitter or bit errors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75CA | Same VWM/VBR/VC specs but in larger SMB (DO-214AA) package; 600 W PPPM rating; higher thermal mass. | Better suited for higher-energy surges or less dense layouts where board space allows larger footprint. | Select SMBJ75CA when peak pulse energy exceeds 400 W or when junction temperature rise must be minimized under repetitive stress. |
| 1.5SMC75CA | Same electrical specs but in SMC (DO-214AB) package; 1500 W PPPM; significantly higher thermal resistance (RθJA = 15 °C/W). | Designed for discrete high-power protection; requires larger copper pour and is not optimized for fine-pitch automated assembly. | Choose 1.5SMC75CA only when system-level surge tests demand >400 W single-event capability and layout permits SMC footprint. |
Compared with SMBJ75CA and 1.5SMC75CA, the P4SMA75CA-E3/61 offers optimal balance of compact DO-214AC footprint, AEC-Q101 qualification, and verified 400 W surge handling - making it preferred for space-constrained automotive and industrial modules requiring production-grade reliability and reflow compatibility.
Availability
P4SMA75CA-E3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and telecom line surge suppression requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P4SMA75CA-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, MOSFETs, and protection devices with emphasis on reliability, automotive qualification, and high-volume manufacturability.
The P4SMA Series targets cost-sensitive yet mission-critical transient suppression needs in automotive, industrial, and telecom systems - delivering AEC-Q101-qualified TVS performance in the smallest standard surface-mount package.
FAQ
What does the "CA" suffix mean in P4SMA75CA-E3/61?
The "CA" suffix in P4SMA75CA-E3/61 denotes a bidirectional configuration, meaning the device provides symmetrical transient voltage suppression for both positive and negative polarity transients. Unlike unidirectional variants (e.g., P4SMA75A), the CA version has no cathode marking and functions identically in either direction - essential for AC-coupled or floating signal lines such as RS-485, CAN, or audio interfaces. This is confirmed in Vishay's official documentation for the P4SMA Series.
Is P4SMA75CA-E3/61 AEC-Q101 qualified?
Yes, P4SMA75CA-E3/61 is AEC-Q101 qualified. The "HE3" and "HM3" ordering codes denote AEC-Q101 versions, and the "E3/61" suffix indicates RoHS-compliant commercial grade with AEC-Q101 qualification per Vishay's ordering information table (Document 88367, page 3). This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and accelerated life testing - validating suitability for automotive under-hood and cabin applications.
What is the clamping voltage of P4SMA75CA-E3/61 at its rated peak pulse current?
The clamping voltage (VC) of P4SMA75CA-E3/61 is 104 V at 3.9 A peak pulse current with a 10/1000 µs waveform, as specified in the Electrical Characteristics table (Document 88367, page 2). This value represents the maximum voltage imposed on the protected circuit during a standardized surge event and is measured across the device terminals under defined test conditions - a critical parameter for ensuring downstream ICs remain within absolute maximum ratings.
Can P4SMA75CA-E3/61 be used in place of a unidirectional TVS like P4SMA75A?
No, P4SMA75CA-E3/61 cannot be directly substituted for P4SMA75A without circuit review. While both share identical VWM (75 V) and VBR (71.3–78.8 V), the P4SMA75A is unidirectional and requires correct polarity orientation (cathode band toward protected circuit ground), whereas P4SMA75CA-E3/61 is bidirectional and polarity-agnostic. Replacing one with the other may cause unexpected forward conduction or ineffective clamping if layout assumes directional behavior - always verify signal path topology before interchange.
What is the thermal resistance of P4SMA75CA-E3/61, and how does it affect PCB layout?
The P4SMA75CA-E3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and junction-to-lead (RθJL) of 30 °C/W, per Vishay's Thermal Characteristics table. These values assume mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain safe junction temperatures under repetitive surges, PCB layout must replicate this pad area and avoid excessive trace length or narrow connections - insufficient copper will raise operating temperature and reduce surge endurance of the P4SMA75CA-E3/61.
P4SMA75CA-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):
- 64.1V
- Voltage - Breakdown (Min):
- 71.3V
- Voltage - Clamping (Max) @ Ipp:
- 104V
- Current - Peak Pulse (10/1000µs):
- 3.9A
- 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)
P4SMA75CA-E3/61 FAQ
1.How can I place an order for P4SMA75CA-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA75CA-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 P4SMA75CA-E3/61 reliable?
The price and inventory of P4SMA75CA-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 P4SMA75CA-E3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA75CA-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA75CA-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA75CA-E3/61?
P4SMA75CA-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA75CA-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 P4SMA75CA-E3/61?
For technical support, including P4SMA75CA-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA75CA-E3/61 requirements.
6.How does Aetrix verify that P4SMA75CA-E3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA75CA-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 P4SMA75CA-E3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA75CA-E3/61?
All P4SMA75CA-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA75CA-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 P4SMA75CA-E3/61 part is unused and in its original packaging.
Return procedure for P4SMA75CA-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA75CA-E3/61 Tags
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