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Vishay General Semiconductor - Diodes Division P4SMA75A-E3/61
- Part No.:
- P4SMA75A-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA75A-E3/61.pdf
- Description:
- TVS DIODE 64.1VWM 104VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA75A-E3/61 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection of sensitive electronics. It features a 75 V standoff voltage (VWM), 71.3–78.8 V breakdown voltage (VBR) at 1 mA, 104 V maximum clamping voltage at 3.9 A peak pulse current, and 400 W peak pulse power rating with a 10/1000 µs waveform - deployed in power supply inputs and I/O lines of industrial sensor interfaces.
For engineers reviewing the P4SMA75A-E3/61 datasheet, P4SMA75A-E3/61 pinout, P4SMA75A-E3/61 application, or P4SMA75A-E3/61 equivalent, key selection criteria include clamping performance under 3.9 A surge, thermal resistance (RθJA = 120 °C/W), unidirectional polarity marking, SMA (DO-214AC) package compatibility, and AEC-Q101 qualification status for automotive-grade variants.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under transient overvoltage, it avalanches rapidly to divert surge current away from downstream circuitry while maintaining a controlled clamping voltage. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at 64.1 V).
The device is rated for 400 W peak pulse power (10/1000 µs), derated above 25 °C per Fig. 2, and supports repetitive surges at 0.01 % duty cycle. It exhibits a positive temperature coefficient of VBR (+0.105 %/°C), enabling predictable voltage shift across operating junction temperatures from –65 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 64.1 V - Maximum continuous reverse working voltage before significant conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 71.3–78.8 V at 1 mA - Confirmed avalanche onset range; ensures reliable triggering during transients without premature conduction. |
| VC (Clamping Voltage) | 104 V at 3.9 A IPPM - Peak voltage seen by protected circuit during full-rated surge; critical for IC/MOSFET voltage tolerance alignment. |
| PPPM (Peak Pulse Power) | 400 W (10/1000 µs) - Surge energy handling capacity on standard copper pad layout (0.2" × 0.2"); validates robustness against IEC 61000-4-5 Level 4 threats. |
| RθJA | 120 °C/W - Junction-to-ambient thermal resistance; determines required PCB copper area and ambient derating for sustained reliability. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in high-temperature industrial enclosures without thermal shutdown. |
| Package | SMA (DO-214AC) - Standardized surface-mount outline with cathode band marking; compatible with automated pick-and-place and reflow profiles up to 260 °C peak. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL level 1 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-side connection point in unidirectional configuration | Marked terminal connects to protected line; reverse-biased during normal operation; conducts surge current to ground when V > VBR. |
| Anode | Ground reference terminal | Connected to system ground or low-impedance return path; completes shunt path for transient energy dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Validated surge handling for industrial-level lightning and switching transients without degradation. |
| Glass passivated chip junction | Ensures long-term stability of VBR and low leakage (<1 µA) across temperature and life cycles. |
| MSL level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without moisture-related popcorning or delamination. |
| AEC-Q101 qualified option available | Enables use in automotive subsystems requiring validated reliability for engine control, body electronics, and ADAS sensors. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD, inductive kick), improving clamping fidelity. |
Applications
| Industrial Sensor Interface Protection | Automotive Body Control Module Input |
|---|---|
Use Scenario: Protecting 24 V CAN/LIN bus sensor inputs from load dump and inductive switching spikes in factory automation systems. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between signal line and chassis ground to clamp transients before reaching interface ICs. Use Value: Limits clamped voltage to 104 V, staying within absolute maximum ratings of RS-485 transceivers and microcontroller GPIOs rated for 36 V logic but exposed to 24 V rail surges. |
Use Scenario: Safeguarding microcontroller analog input pins monitoring door lock actuator current in vehicle body control modules. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 12 V supply rail feeding op-amp signal conditioning circuitry. Use Value: Withstands 400 W pulses per ISO 7637-2 Pulse 5a, preventing latch-up or permanent damage to 5 V rail regulators and ADC front-ends. |
| Telecom Power Supply Ingress | Consumer Appliance Motor Drive Feedback |
Use Scenario: Secondary-stage transient suppression on DC-DC converter outputs supplying Ethernet PHYs and PoE controllers. IC Role / Device Role / Timing Role: Fast-response voltage clamp on 48 V output rail to prevent overvoltage propagation to sensitive communication ICs. Use Value: Achieves <1 ns response time and 104 V clamping, ensuring compliance with IEC 61000-4-5 (4 kV) while preserving signal integrity on high-speed data lines. |
Use Scenario: Overvoltage protection on hall-effect sensor feedback lines in BLDC motor drives embedded in washing machines and HVAC systems. IC Role / Device Role / Timing Role: Bidirectional-capable variant not used; this unidirectional P4SMA75A-E3/61 protects grounded-sensor return paths from back-EMF coupling. Use Value: Maintains <1 µA leakage at 64.1 V, avoiding measurement offset errors in millivolt-level hall sensor outputs while surviving repeated 300–400 W motor commutation spikes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75A (Digi-Key: SMBJ75AHE3/TR13CT-ND) | Higher 600 W PPPM rating; larger SMB (DO-214AA) package; 113 V VC at 5.3 A; RθJA = 85 °C/W | Better suited for higher-energy transients; requires larger PCB footprint and more copper area | Select when surge energy exceeds 400 W or thermal budget demands lower RθJA |
| 1.5SMC75A (Mouser: 78-1.5SMC75A) | Same 400 W PPPM but in larger SMC (DO-214AB) package; 113 V VC at 3.5 A; RθJA = 65 °C/W; higher IFSM (100 A) | Preferred for high-reliability industrial power supplies where mechanical robustness and surge repetition matter | Choose when board space allows larger package and higher forward surge immunity is needed for AC-coupled inputs |
Compared with P4SMA75A-E3/61, SMBJ75A offers superior power handling in a slightly larger footprint, while 1.5SMC75A provides better thermal performance and surge endurance - both require layout review due to differing package dimensions and thermal pad requirements, though all three share identical VWM/VBR/VC voltage grades.
Availability
P4SMA75A-E3/61 is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body electronics, telecom power supply ingress protection, and consumer appliance motor drive feedback circuits requiring stable component supply, RoHS-compliant packaging, and traceable sourcing.
Supply support for P4SMA75A-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, precision, and application-specific optimization.
The P4SMA Series is engineered for cost-effective, high-volume surface-mount transient suppression in consumer, industrial, automotive, and telecom systems - balancing clamping performance, thermal efficiency, and automated assembly compatibility.
FAQ
What is the maximum clamping voltage of the P4SMA75A-E3/61 under full-rated surge conditions?
The P4SMA75A-E3/61 has a maximum clamping voltage (VC) of 104 V at 3.9 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured under standardized test conditions on 0.2" × 0.2" copper pads and represents the highest voltage the protected circuit will experience during a full-rated transient event. The P4SMA75A-E3/61 maintains this clamping performance consistently across its specified operating temperature range.
Is the P4SMA75A-E3/61 RoHS-compliant and halogen-free?
Yes, the P4SMA75A-E3/61 carries the "E3" suffix, indicating it is RoHS-compliant and meets commercial-grade environmental specifications per Vishay's material categorization. It is not halogen-free - that designation applies only to "M3" suffix variants. The P4SMA75A-E3/61 uses matte tin-plated leads and complies with J-STD-002 and JESD 22-B102 solderability standards.
Does the P4SMA75A-E3/61 meet AEC-Q101 qualification?
No, the P4SMA75A-E3/61 is not AEC-Q101 qualified. That qualification applies only to variants with "HE3" or "HM3" suffixes (e.g., P4SMA75AHE3_A). The P4SMA75A-E3/61 is rated for commercial temperature range (–65 °C to +150 °C) and intended for industrial, telecom, and consumer applications where automotive-grade stress testing is not required.
What is the thermal resistance of the P4SMA75A-E3/61, and how does it affect PCB layout?
The P4SMA75A-E3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on minimum recommended pad layout (0.2" × 0.2" copper pads per terminal). This value means each watt of sustained power dissipation raises junction temperature by 120 °C above ambient - so for reliable operation at 3.3 W rated power, ambient must stay below ~115 °C. The P4SMA75A-E3/61 requires adequate copper area and airflow to avoid thermal runaway during repetitive surges.
How does the polarity marking work on the P4SMA75A-E3/61?
The P4SMA75A-E3/61 is a unidirectional TVS diode with a visible cathode band on the SMA (DO-214AC) package body. During normal operation, the banded end connects to the line being protected (e.g., 24 V rail), and the opposite end connects to ground. When a transient exceeds VBR, the P4SMA75A-E3/61 conducts from cathode to anode, shunting surge current to ground. No marking appears on bidirectional variants - but the P4SMA75A-E3/61 is strictly unidirectional and relies on this band for correct orientation.
P4SMA75A-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:
- 1
- Bidirectional Channels:
- -
- 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)
P4SMA75A-E3/61 FAQ
1.How can I place an order for P4SMA75A-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA75A-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 P4SMA75A-E3/61 reliable?
The price and inventory of P4SMA75A-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 P4SMA75A-E3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA75A-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA75A-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA75A-E3/61?
P4SMA75A-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA75A-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 P4SMA75A-E3/61?
For technical support, including P4SMA75A-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA75A-E3/61 requirements.
6.How does Aetrix verify that P4SMA75A-E3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA75A-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 P4SMA75A-E3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA75A-E3/61?
All P4SMA75A-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA75A-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 P4SMA75A-E3/61 part is unused and in its original packaging.
Return procedure for P4SMA75A-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA75A-E3/61 Tags
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