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Vishay General Semiconductor - Diodes Division P4SMA30A-M3/61
- Part No.:
- P4SMA30A-M3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA30A-M3/61.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA30A-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 30 V standoff voltage (VWM), 31.5 V maximum breakdown voltage (VBR), 41.4 V clamping voltage at 9.7 A peak pulse current, and 400 W peak pulse power capability with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor signal lines in industrial and automotive electronics.
For engineers reviewing the P4SMA30A-M3/61 datasheet, P4SMA30A-M3/61 pinout, P4SMA30A-M3/61 application, or P4SMA30A-M3/61 equivalent, this page delivers verified electrical parameters, thermal derating behavior, halogen-free RoHS-compliant construction, AEC-Q101 qualification status, and real-world protection use cases for design-in validation.
Technical Context
The P4SMA30A-M3/61 operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold (28.5–31.5 V at 1 mA). Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at 25.6 V), while its low incremental surge resistance enables rapid clamping response under transient stress.
Thermally, it exhibits RθJA = 120 °C/W and RθJL = 30 °C/W, with maximum junction temperature of +150 °C and MSL Level 1 moisture sensitivity. It supports repetitive 0.01% duty-cycle surges up to 400 W below 91 V and derates linearly above 25 °C ambient per Figure 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 25.6 V - Maximum continuous reverse operating voltage before conduction begins; defines safe working margin for 30 V nominal rail protection. |
| VBR @ IT = 1 mA | 28.5–31.5 V - Measured breakdown range confirming tight tolerance for predictable clamping onset. |
| VC @ IPPM = 9.7 A | 41.4 V - Clamped voltage during 10/1000 µs transient; limits downstream device stress to ≤41.4 V. |
| PPPM | 400 W - Peak pulse power handling capacity under standard 10/1000 µs waveform; validates robustness against IEC 61000-4-5 surges. |
| IFSM | 40 A - Non-repetitive forward surge rating (8.3 ms half-sine); supports inrush or fault-current events without failure. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive or high-ambient industrial environments. |
| Package | SMA (DO-214AC) - Standardized surface-mount outline with 5.0 mm × 5.0 mm copper pad requirement for thermal management. |
Pinout & Package
SMA (DO-214AC) package: molded epoxy case with matte tin-plated leads, UL 94 V-0 rated, polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference node | Connected to protected circuit ground or lower-potential rail; establishes reference for clamping action. |
| Cathode | Reverse voltage input / Clamping output node | Connected to line being protected (e.g., 30 V supply rail); conducts avalanche current when VREV > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables compliance with IEC 61000-4-5 Level 3 (1 kV line-to-line, 2 kV line-to-ground) surge immunity requirements. |
| Low clamping ratio (VC/VBR ≈ 1.31) | Minimizes overvoltage exposure to downstream ICs, reducing risk of latch-up or gate oxide damage in MOSFETs and logic devices. |
| AEC-Q101 qualified (M3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for engine control, ADAS, and body electronics. |
| Halogen-free & RoHS-compliant (M3) | Meets EU Directive 2011/65/EU and JESD201 Class 2 whisker resistance, supporting green manufacturing and long-term solder joint integrity. |
| MSL Level 1 (260 °C peak reflow) | Allows single-pass lead-free reflow assembly without preconditioning, simplifying SMT production flow. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 24 V CAN bus power rails and microcontroller supply inputs against load-dump transients (ISO 7637-2 Pulse 5a) and alternator overshoot. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between battery feed and LDO input, absorbing energy within nanoseconds. Use Value: Limits voltage excursion to ≤41.4 V during 100 V/100 ms load dump, preventing regulator shutdown and MCU brownout. |
Use Scenario: Shielding analog outputs (e.g., 4–20 mA current loop drivers) and digital I/O pins of industrial PLC modules from ESD and switching noise. IC Role / Device Role / Timing Role: Fast-response transient suppressor mounted directly at connector interface, shunting ESD pulses before reaching precision DAC or op-amp inputs. Use Value: Clamps ±8 kV contact ESD (IEC 61000-4-2) to <45 V within <1 ns, preserving signal integrity and avoiding ADC offset drift. |
| Telecom DC Power Input Protection | Consumer Device USB Port Protection |
Use Scenario: Safeguarding 48 V PoE-powered equipment (e.g., IP cameras, wireless access points) against lightning-induced surges on Ethernet cables. IC Role / Device Role / Timing Role: Primary-level TVS on DC input stage, coordinated with secondary GDT or MOV for staged surge suppression. Use Value: Handles 400 W peak pulse energy from induced surges, maintaining system uptime without sacrificial fuse activation. |
Use Scenario: Protecting USB 2.0 data lines and VBUS supply in portable speakers, smart home hubs, and wearables from human-body-model ESD events. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS on VBUS line, placed upstream of USB switch IC to prevent overvoltage damage during hot-plug. Use Value: Delivers <1 µA leakage at 25.6 V, ensuring no impact on USB enumeration timing or VBUS regulation accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30A | Higher 600 W PPPM, larger SMB (DO-214AA) package, same VWM/VC specs. | Better suited for higher-energy surges; requires larger PCB footprint and different pad layout. | Select when surge energy exceeds 400 W or board space allows larger package. |
| 1.5SMC33A | Same 400 W rating but in larger SMC (DO-214AB) package; VWM = 28.2 V, VC = 45.7 V. | Higher clamping voltage increases stress on protected ICs; lower thermal resistance (RθJA ≈ 60 °C/W). | Prefer only if existing SMC footprint reuse is mandatory and clamping margin permits 45.7 V. |
Compared with SMBJ30A and 1.5SMC33A, P4SMA30A-M3/61 offers optimal balance of compact SMA footprint, AEC-Q101 qualification, halogen-free compliance, and precise 41.4 V clamping - making it ideal for space-constrained automotive and industrial designs where reliability and regulatory alignment are critical.
Availability
P4SMA30A-M3/61 is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLC I/O modules, telecom power supplies, and consumer USB power delivery systems requiring stable component supply across extended product lifecycles.
Supply support for P4SMA30A-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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The P4SMA Series was developed for cost-effective, high-volume transient protection in automotive, industrial, and communications systems - delivering standardized SMA packaging, AEC-Q101 qualification, and consistent clamping performance across voltage grades.
FAQ
What is the maximum clamping voltage of the P4SMA30A-M3/61 under a 10/1000 µs transient?
The P4SMA30A-M3/61 has a maximum clamping voltage (VC) of 41.4 V at 9.7 A peak pulse current (IPPM) under the standard 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 circuits during surge events. The P4SMA30A-M3/61 maintains this clamping performance across its full operating temperature range when mounted per recommended 5.0 mm × 5.0 mm copper pads.
Is the P4SMA30A-M3/61 qualified for automotive applications?
Yes, the P4SMA30A-M3/61 carries the M3 suffix, indicating halogen-free, RoHS-compliant construction and AEC-Q101 qualification per Vishay's ordering information on page 3 of document 88367. It has passed stress tests including temperature cycling, high-temperature reverse bias (HTRB), and ESD per JESD22-A114, making it suitable for under-hood and chassis-mounted automotive electronics where reliability under thermal and mechanical stress is required. The P4SMA30A-M3/61 is explicitly listed in Vishay's AEC-Q101 qualified portfolio for the P4SMA series.
What does the "/61" suffix indicate in P4SMA30A-M3/61?
The "/61" suffix in P4SMA30A-M3/61 specifies the packaging configuration: 7-inch diameter plastic tape and reel, with a standard quantity of 1800 pieces per reel. This format is optimized for automated SMT placement equipment and aligns with IPC-7351 standards for SMA (DO-214AC) devices. The P4SMA30A-M3/61 uses embossed carrier tape with cover tape sealing, compatible with pick-and-place machines operating at standard feed rates. No functional or electrical differences exist between /61 and other delivery modes like /5A.
How does the thermal resistance of the P4SMA30A-M3/61 affect its surge handling capability?
The P4SMA30A-M3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and junction-to-lead (RθJL) of 30 °C/W. These values directly govern its ability to dissipate heat during repetitive surges: per Figure 2 in document 88367, its 400 W peak pulse rating derates linearly above 25 °C ambient, dropping to ~300 W at 75 °C. Proper PCB copper pad sizing (0.2" × 0.2") is essential to achieve the rated performance - undersized pads increase RθJA and reduce effective PPPM. The P4SMA30A-M3/61 must be mounted per Vishay's recommended layout to maintain thermal integrity.
Can the P4SMA30A-M3/61 be used in bidirectional configurations?
No, the P4SMA30A-M3/61 is a unidirectional TVS diode, as confirmed by its part number suffix "A" (not "CA") and the absence of bidirectional electrical characteristics in its row of Table on page 2. Bidirectional variants such as P4SMA30CA are required for AC-coupled or dual-polarity signal line protection. Using the P4SMA30A-M3/61 in reverse-biased AC applications would result in forward conduction and potential failure. The P4SMA30A-M3/61 functions only in reverse-bias clamping mode, with cathode connected to the protected line and anode to ground.
P4SMA30A-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):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.4V
- Current - Peak Pulse (10/1000µs):
- 9.7A
- 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)
P4SMA30A-M3/61 FAQ
1.How can I place an order for P4SMA30A-M3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA30A-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 P4SMA30A-M3/61 reliable?
The price and inventory of P4SMA30A-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 P4SMA30A-M3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA30A-M3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA30A-M3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA30A-M3/61?
P4SMA30A-M3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA30A-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 P4SMA30A-M3/61?
For technical support, including P4SMA30A-M3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA30A-M3/61 requirements.
6.How does Aetrix verify that P4SMA30A-M3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA30A-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 P4SMA30A-M3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA30A-M3/61?
All P4SMA30A-M3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA30A-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 P4SMA30A-M3/61 part is unused and in its original packaging.
Return procedure for P4SMA30A-M3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA30A-M3/61 Tags
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