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Vishay General Semiconductor - Diodes Division P4SMA33A-M3/61
- Part No.:
- P4SMA33A-M3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA33A-M3/61.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,336
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Product details
Overview
P4SMA33A-M3/61 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features a 33 V breakdown voltage (VBR = 31.4–34.7 V at IT = 1.0 mA), 28.2 V standoff voltage (VWM), 45.7 V maximum clamping voltage (VC) 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 P4SMA33A-M3/61 datasheet, P4SMA33A-M3/61 pinout, P4SMA33A-M3/61 application, or P4SMA33A-M3/61 equivalent, key selection criteria include unidirectional polarity, SMA package thermal resistance (RθJA = 120 °C/W), AEC-Q101 qualification status (M3 suffix indicates halogen-free RoHS-compliant commercial grade, not automotive-qualified), and clamping performance under repetitive surge conditions.
Technical Context
The P4SMA33A-M3/61 operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, enabling fast response (<1 ns) to ESD and lightning-induced transients.
It is rated for 400 W peak pulse power (10/1000 µs) at TA = 25 °C, derating linearly above 25 °C per Fig. 2, with maximum junction temperature of 150 °C and thermal resistance RθJL = 30 °C/W. The device exhibits 0.098 %/°C temperature coefficient of VBR, ensuring predictable voltage shift across operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 31.4 V / 34.7 V at IT = 1.0 mA - defines precise avalanche onset window for reliable clamping margin |
| VWM | 28.2 V - maximum continuous reverse working voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 45.7 V at 8.8 A - clamped voltage during 10/1000 µs transient, limiting stress on downstream ICs |
| PPPM | 400 W - peak transient energy absorption capability on standard 0.2" × 0.2" copper pads |
| IFSM | 40 A - single half-sine surge current rating (8.3 ms), supporting inductive load switching events |
| TJ max. | 150 °C - enables operation in under-hood automotive or high-ambient industrial environments |
| RθJA | 120 °C/W - dictates PCB pad layout requirements for thermal management in sustained surge scenarios |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads. Cathode indicated by band; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VREV > VBR |
| Anode (unbanded end) | Reference/ground return | Typically tied to system ground or low-impedance return path for effective clamping |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures long-term stability of VBR and low leakage (<1 µA at VWM) over temperature and lifetime |
| 400 W peak pulse power (10/1000 µs) | Supports robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 24 V systems |
| Low profile SMA package | Enables automated placement and fits space-constrained layouts typical in motor control and sensor modules |
| MSL Level 1 (J-STD-020) | Allows unlimited floor life and reflow up to 260 °C peak without preconditioning or dry pack |
| Halogen-free & RoHS-compliant (M3 suffix) | Fulfills environmental compliance for global industrial and consumer product certifications |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of gate drivers and microcontroller I/O pins against inductive kickback from relay and solenoid coils. IC Role / Device Role / Timing Role: Unidirectional TVS placed between MCU GPIO and external switch node to clamp negative transients to safe levels. Use Value: Limits VC to 45.7 V during 8.8 A surges, preventing latch-up or oxide damage in 3.3 V/5 V logic interfaces. |
Use Scenario: Safeguarding LIN bus transceivers and sensor supply rails from load dump and jump-start events. IC Role / Device Role / Timing Role: Standoff-rated TVS on 12 V rail input to absorb 400 W pulses while maintaining <1 µA leakage at 13.5 V nominal. Use Value: Withstands 28.2 V VWM, it remains non-conducting during normal battery operation but activates before downstream regulators fail. |
| Telecom Power Supply Inputs | Consumer Appliance Control Boards |
Use Scenario: Input-stage surge suppression on AC-DC adapter secondary-side 24 V outputs feeding base station controllers. IC Role / Device Role / Timing Role: Primary clamping device on DC output rail, coordinated with upstream MOVs for multi-level protection. Use Value: 45.7 V clamping ensures connected FPGAs and PHYs remain within absolute maximum ratings during 10/1000 µs transients. |
Use Scenario: Protection of touch controller and display interface lines against ESD and EFT in smart home hubs. IC Role / Device Role / Timing Role: Fast-response TVS on I²C and UART lines, leveraging sub-nanosecond turn-on to suppress 8 kV contact discharge. Use Value: Low capacitance (typ. <100 pF at VWM) avoids signal integrity degradation on 400 kHz I²C buses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ33A | Same SMA package, identical VBR (31.4–34.7 V), but rated for 400 W with tighter VC spec (45.0 V max) and higher IPPM (8.9 A) | Preferred where lower clamping voltage margin is critical; slightly better surge consistency due to tighter VC binning | Select SMAJ33A if design requires guaranteed ≤45.0 V clamping under worst-case surge conditions |
| 1.5SMC33A | Higher-power SMC package (1500 W), same VBR/VWM, but larger footprint and higher RθJA (60 °C/W) | Suitable for high-energy industrial mains inputs where 400 W is insufficient; requires PCB area increase and thermal redesign | Choose 1.5SMC33A only when surge threat level exceeds P4SMA33A-M3/61's 400 W rating and board space allows SMC |
Compared with SMAJ33A, P4SMA33A-M3/61 offers identical electrical protection in a cost-optimized commercial-grade variant; compared with 1.5SMC33A, it trades surge capacity for compactness and lower thermal resistance in ambient-limited spaces.
Availability
P4SMA33A-M3/61 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body electronics, and telecom power supply inputs requiring stable component supply, halogen-free compliance, and surface-mount manufacturability.
Supply support for P4SMA33A-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 cost-sensitive, high-volume transient suppression in consumer, industrial, and automotive electronics - balancing robust 400 W surge handling with compact SMA packaging and automated assembly compatibility.
FAQ
What is the polarity configuration of P4SMA33A-M3/61?
P4SMA33A-M3/61 is a unidirectional TVS diode: the banded end is the cathode and must be connected toward the protected line, while the unbanded end (anode) connects to ground or reference. This configuration allows conduction only during reverse-voltage transients, making it unsuitable for bidirectional signal-line protection without additional circuitry.
Does P4SMA33A-M3/61 meet AEC-Q101 for automotive use?
No - P4SMA33A-M3/61 carries the M3 suffix, indicating halogen-free and RoHS-compliant commercial-grade construction. For AEC-Q101 qualification, Vishay specifies the HE3 or HM3 suffix variants (e.g., P4SMA33AHE3_A); the M3/61 version is not tested or certified to AEC-Q101 stress requirements.
What is the maximum clamping voltage of P4SMA33A-M3/61 under surge conditions?
The maximum clamping voltage (VC) of P4SMA33A-M3/61 is 45.7 V at 8.8 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 upper limit of voltage seen by downstream components during a defined transient event.
Can P4SMA33A-M3/61 be used in place of a bidirectional TVS like P4SMA33CA?
No - P4SMA33A-M3/61 is unidirectional and will conduct only in reverse bias; P4SMA33CA is bidirectional and clamps transients of either polarity. Substituting P4SMA33A-M3/61 for P4SMA33CA risks failure on positive-going transients in AC-coupled or floating signal paths, as the device remains non-conductive in forward bias.
What is the thermal resistance junction-to-ambient for P4SMA33A-M3/61?
The typical thermal resistance junction-to-ambient (RθJA) for P4SMA33A-M3/61 is 120 °C/W when mounted on standard 0.2" × 0.2" copper pads per JEDEC standards. This value assumes no additional heatsinking and governs allowable power dissipation in continuous or repetitive surge scenarios at elevated ambient temperatures.
P4SMA33A-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:
- 1
- Bidirectional Channels:
- -
- 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)
P4SMA33A-M3/61 FAQ
1.How can I place an order for P4SMA33A-M3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA33A-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 P4SMA33A-M3/61 reliable?
The price and inventory of P4SMA33A-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 P4SMA33A-M3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA33A-M3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA33A-M3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA33A-M3/61?
P4SMA33A-M3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA33A-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 P4SMA33A-M3/61?
For technical support, including P4SMA33A-M3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA33A-M3/61 requirements.
6.How does Aetrix verify that P4SMA33A-M3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA33A-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 P4SMA33A-M3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA33A-M3/61?
All P4SMA33A-M3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA33A-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 P4SMA33A-M3/61 part is unused and in its original packaging.
Return procedure for P4SMA33A-M3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA33A-M3/61 Tags
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