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Vishay General Semiconductor - Diodes Division P4SMA33CA-M3/61
- Part No.:
- P4SMA33CA-M3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA33CA-M3/61.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,902
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Product details
Overview
P4SMA33CA-M3/61 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features a 33 V breakdown voltage (VBR min/max = 31.4–34.7 V at 1 mA), 28.2 V standoff voltage (VWM), 45.7 V maximum clamping voltage at 8.8 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 P4SMA33CA-M3/61 datasheet, P4SMA33CA-M3/61 pinout, P4SMA33CA-M3/61 application, or P4SMA33CA-M3/61 equivalent, this device serves as a halogen-free, RoHS-compliant, AEC-Q101-qualified transient suppressor optimized for bidirectional surge protection in space-constrained PCB layouts requiring automated placement and high-reliability operation up to 150 °C junction temperature.
Technical Context
The P4SMA33CA-M3/61 operates as a bidirectional avalanche diode with symmetrical clamping behavior in both polarities, enabling protection of AC-coupled or differential signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at VWM), while its low incremental surge resistance supports fast energy diversion during ESD or lightning-induced transients.
Thermally, it exhibits RθJA = 120 °C/W (junction-to-ambient) and RθJL = 30 °C/W (junction-to-lead), with derating applied above 25 °C ambient per Figure 2. It meets J-STD-020 MSL Level 1 and JESD201 Class 2 whisker resistance, supporting lead-free reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 31.4–34.7 V at 1 mA test current - defines precise avalanche onset threshold for reliable clamping initiation |
| Standoff Voltage VWM | 28.2 V - maximum continuous reverse working voltage before leakage exceeds 1 µA, ensuring no false triggering |
| Clamping Voltage VC | 45.7 V at 8.8 A IPPM - limits transient voltage seen by protected circuitry under 10/1000 µs surge |
| Peak Pulse Power PPPM | 400 W (10/1000 µs waveform) - sustains high-energy surges common in industrial load switching and EFT events |
| Package | SMA (DO-214AC) - surface-mount outline with 5.0 mm × 5.0 mm copper pad footprint, compatible with standard SMT assembly |
| Operating Temperature | -65 to +150 °C - supports extended-range deployment in automotive engine compartments and industrial control cabinets |
| AEC-Q101 Qualified | Yes (HM3 suffix) - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads; polarity unmarked for bidirectional operation; meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (bidirectional) | Accepts surge current in either polarity; connects to line being protected |
| Cathode | Transient current exit point (bidirectional) | Completes low-impedance path to ground or return rail during clamping event |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Handles high-energy transients from inductive switching or lightning-induced surges without degradation |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes overvoltage stress on downstream components during suppression events |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets environmental compliance requirements for global electronics manufacturing and end-of-life disposal |
| MSL Level 1, 260 °C reflow compatible | Enables single-pass lead-free reflow soldering without moisture sensitivity concerns |
| 0.098 %/°C VBR tempco | Ensures predictable voltage clamping across full operating temperature range (-65 to +150 °C) |
Applications
| Industrial Motor Control | Automotive Sensor Interface |
|---|---|
Use Scenario: Protects gate drivers and feedback signal lines from voltage spikes generated by contactor switching and PWM motor current reversal. IC Role / Device Role / Timing Role: Bidirectional TVS placed across isolated signal inputs and supply rails to clamp ±kV-level transients before they reach analog front-end or microcontroller I/O. Use Value: Prevents latch-up or permanent damage to precision op-amps and ADCs exposed to repetitive 400 W surges in factory automation systems. |
Use Scenario: Shields LIN/CAN physical layer receivers and MEMS pressure/temperature sensor outputs from battery dump and load-dump events. IC Role / Device Role / Timing Role: Fast-response transient suppressor mounted directly at connector entry points to limit induced surges to <46 V before reaching ASIC input pins. Use Value: Enables AEC-Q101-compliant protection without adding series impedance or signal distortion to low-speed sensor data paths. |
| Telecom Power Supply Input | Consumer USB-C Port Protection |
Use Scenario: Guards primary-side DC input of telecom AC/DC converters against lightning-induced surges entering via PoE or external power adapters. IC Role / Device Role / Timing Role: First-line bidirectional clamping device placed before bulk capacitance and upstream of active rectification or PFC controller. Use Value: Absorbs 400 W pulses without thermal runaway, maintaining system uptime during outdoor cabinet exposure to atmospheric surges. |
Use Scenario: Safeguards USB-C CC, VBUS, and SBU lines against ESD and hot-plug transients in portable audio/video devices. IC Role / Device Role / Timing Role: Low-capacitance (typ. <100 pF) TVS integrated into compact layout near port connector to minimize trace inductance. Use Value: Provides sub-50 ns response time and <46 V clamping to preserve USB PD negotiation integrity and prevent PHY latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33CA | Higher 600 W PPPM rating; larger SMB (DO-214AA) package; 45.7 V VC at 13.9 A | Better suited for higher-energy surges but requires 30% more board area | Select when surge energy exceeds 400 W or when thermal margin must be increased beyond SMA limitations |
| 1.5SMC33CA | Same 400 W rating but in larger SMC (DO-214AB) package; identical VBR/VC specs | Offers improved thermal dissipation (RθJA ≈ 60 °C/W) for sustained surge duty cycles | Choose when operating ambient exceeds 75 °C or when multiple simultaneous transients require enhanced thermal headroom |
Compared with SMBJ33CA and 1.5SMC33CA, the P4SMA33CA-M3/61 delivers identical clamping performance in the smallest surface-mount footprint, making it optimal for high-density consumer and automotive modules where PCB real estate and automated placement compatibility are critical constraints.
Availability
P4SMA33CA-M3/61 is available at Aetrix Electronics and suitable for industrial motor control, automotive sensor interface, telecom power supply input, and consumer USB-C port protection requiring stable component supply and halogen-free compliance.
Supply support for P4SMA33CA-M3/61 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 optimization.
The P4SMA Series is engineered for robust transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where consistent clamping performance and AEC-Q101 qualification are mandatory.
FAQ
What is the maximum clamping voltage of the P4SMA33CA-M3/61 under a 10/1000 µs surge?
The P4SMA33CA-M3/61 has a maximum clamping voltage (VC) of 45.7 V at 8.8 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured per Figure 1 and Table on page 2 of Vishay document 88367, and defines the upper voltage limit imposed on protected circuitry during transient events. The P4SMA33CA-M3/61 maintains this clamping performance across its full operating temperature range.
Is the P4SMA33CA-M3/61 suitable for automotive applications?
Yes, the P4SMA33CA-M3/61 is AEC-Q101 qualified (via HM3 suffix) and rated for operation from -65 °C to +150 °C junction temperature. It undergoes stress testing for temperature cycling, high-temperature reverse bias, and ESD robustness per automotive requirements. The P4SMA33CA-M3/61 is explicitly recommended for protecting sensor interfaces, LIN/CAN receivers, and power supply inputs in passenger vehicle and commercial vehicle ECUs.
What does the "CA" suffix indicate in P4SMA33CA-M3/61?
The "CA" suffix in P4SMA33CA-M3/61 denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression in both forward and reverse directions. Unlike unidirectional variants (e.g., P4SMA33A), the CA version has no cathode marking and is used where AC signals, differential buses, or polarity-agnostic protection is required. Electrical characteristics such as VBR, VWM, and VC apply identically in both directions.
How does the M3 suffix affect the P4SMA33CA-M3/61's compliance profile?
The "M3" suffix indicates that the P4SMA33CA-M3/61 is halogen-free and RoHS-compliant, meeting JEDEC J-STD-020 MSL Level 1 and JESD201 Class 2 whisker resistance standards. It uses matte tin-plated leads and UL 94 V-0 molding compound. This distinguishes it from the E3 variant (RoHS-compliant but not halogen-free) and enables use in environmentally regulated markets including EU automotive and industrial equipment.
What is the thermal resistance of the P4SMA33CA-M3/61, and how does it impact layout design?
The P4SMA33CA-M3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes minimum recommended pad layout per Figure on page 5. To maintain safe junction temperatures under repeated surges, designers must ensure adequate copper area and avoid excessive ambient rise - the P4SMA33CA-M3/61 derates linearly above 25 °C ambient per Figure 2 in the datasheet.
P4SMA33CA-M3/61 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):
- 28.2V
- Voltage - Breakdown (Min):
- 31.4V
- Voltage - Clamping (Max) @ Ipp:
- 45.7V
- Current - Peak Pulse (10/1000µs):
- 8.8A
- 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)
P4SMA33CA-M3/61 FAQ
1.How can I place an order for P4SMA33CA-M3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA33CA-M3/61 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 P4SMA33CA-M3/61 reliable?
The price and inventory of P4SMA33CA-M3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA33CA-M3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA33CA-M3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA33CA-M3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA33CA-M3/61?
P4SMA33CA-M3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA33CA-M3/61 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 P4SMA33CA-M3/61?
For technical support, including P4SMA33CA-M3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA33CA-M3/61 requirements.
6.How does Aetrix verify that P4SMA33CA-M3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA33CA-M3/61 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 P4SMA33CA-M3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA33CA-M3/61?
All P4SMA33CA-M3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA33CA-M3/61, 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 P4SMA33CA-M3/61 part is unused and in its original packaging.
Return procedure for P4SMA33CA-M3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA33CA-M3/61 Tags
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