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Vishay General Semiconductor - Diodes Division P4SMA7.5A-M3/5A
- Part No.:
- P4SMA7.5A-M3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA7.5A-M3/5A.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,364
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Product details
Overview
P4SMA7.5A-M3/5A from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping fast-rising ESD and surge transients on power and signal lines. It features 7.13 V minimum breakdown voltage (VBR), 6.40 V maximum standoff voltage (VWM), 11.3 V clamping voltage (VC) at 35.4 A peak pulse current (IPPM), and 400 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the P4SMA7.5A-M3/5A datasheet, P4SMA7.5A-M3/5A pinout, P4SMA7.5A-M3/5A application, or P4SMA7.5A-M3/5A equivalent, this page delivers verified electrical parameters, thermal derating behavior, polarity marking, halogen-free RoHS compliance (M3 suffix), and AEC-Q101 qualification status - all critical for surge protection design validation and BOM selection.
Technical Context
The P4SMA7.5A-M3/5A operates as a unidirectional avalanche diode with cathode-band polarity marking, optimized for low-clamp, high-speed response to transients up to 400 W. Its glass-passivated junction ensures stable VBR tolerance (±5% typical), while M3 suffix confirms halogen-free, RoHS-compliant construction meeting JESD201 Class 2 whisker resistance and MSL Level 1 reflow profile (260 °C peak).
Thermal performance is defined by RθJA = 120 °C/W (junction-to-ambient, on 0.2" × 0.2" copper pads) and RθJL = 30 °C/W (junction-to-lead), enabling reliable operation up to TJ = 150 °C. The device sustains 40 A non-repetitive forward surge (IFSM, 8.3 ms half-sine) and exhibits <1000 µA reverse leakage (ID) at VWM, supporting robust overvoltage immunity in DC power rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 7.13 V / 7.88 V at 10 mA test current - defines precise avalanche onset window for predictable clamping threshold |
| VWM | 6.40 V - maximum continuous reverse operating voltage before leakage exceeds 500 µA |
| VC @ IPPM | 11.3 V at 35.4 A - clamped voltage during 400 W 10/1000 µs surge, limiting downstream stress |
| PPPM | 400 W - peak pulse power handling capability under standard surge waveform, derated above 25 °C |
| IFSM | 40 A - single half-sine surge current rating (8.3 ms), supporting inrush and fault-current resilience |
| TJ max. | +150 °C - maximum junction temperature, enabling use in under-hood or enclosed industrial environments |
| Package | SMA (DO-214AC) - standardized SMT footprint with 5.0 mm × 5.0 mm pad layout, compatible with automated placement |
Pinout & Package
SMA (DO-214AC) package: surface-mount, molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, cathode indicated by band marking on unidirectional variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; conducts during forward surge events (e.g., reverse-bias faults) |
| Cathode | Avalanche clamping terminal | Marked with band; connected to higher-potential side; initiates controlled breakdown when VRM exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables suppression of high-energy lightning-induced surges without thermal runaway on standard PCB copper |
| 11.3 V clamping voltage at 35.4 A | Keeps protected IC supply rails below absolute maximum ratings during transient events |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets environmental compliance requirements for automotive and industrial end equipment without compromising reliability |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JEDEC standards |
| MSL Level 1 (260 °C peak) | Supports lead-free reflow assembly without popcorn cracking or delamination risk |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load-dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor signal line and ground, clamping transients within nanoseconds. Use Value: Limits induced voltage to ≤11.3 V during 35.4 A surges, preventing latch-up or gate oxide damage in 5 V/3.3 V interface ICs. |
Use Scenario: Safeguarding digital input modules against field-wiring transients and relay coil flyback in factory automation systems. IC Role / Device Role / Timing Role: Mounted across 24 V DC input terminals to shunt inductive kickback energy away from optocoupler or MCU GPIO. Use Value: Absorbs 400 W surges without degradation, maintaining system uptime and reducing field failure rates in harsh EMI environments. |
| Consumer Power Adapter Output | Telecom PoE Interface |
Use Scenario: Secondary-side overvoltage protection on 5 V/9 V/12 V USB-C and wall adapter outputs exposed to accidental short-circuit recovery spikes. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to output rail, activated only during positive overvoltage excursions. Use Value: Clamps to 11.3 V before downstream LDOs or USB PD controllers exceed safe input limits, avoiding brownout resets. |
Use Scenario: Data-line surge protection on IEEE 802.3af/at PoE injectors and splitters where Ethernet pairs carry both power and signals. IC Role / Device Role / Timing Role: Paired unidirectional TVS devices on each twisted pair, referenced to common-mode ground. Use Value: Maintains <10 pF junction capacitance (per curve Fig. 4) to preserve 100BASE-TX signal integrity while suppressing ±1 kV ESD. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0A | Higher VWM (6.0 V), lower VC (10.5 V at 34.4 A), same 400 W rating but SMB package (larger footprint) | Better suited for tighter clamping margin in 5 V systems; requires larger PCB area and different pad layout | Select when lower clamping voltage is prioritized and board space allows SMB footprint |
| 1.5SMC7.5A | Same VBR/VWM/VC specs, but SMC package (DO-214AB) with higher IFSM (50 A) and 1500 W rating | Targeted at higher-energy surge environments (e.g., AC mains input); not drop-in due to larger body and lead spacing | Choose for legacy designs requiring higher surge margin or where SMC mounting is already standardized |
Compared with P4SMA7.5A-M3/5A, SMBJ7.0A offers tighter clamping but demands more PCB real estate, while 1.5SMC7.5A provides superior surge endurance at the cost of compatibility with compact SMA layouts - making P4SMA7.5A-M3/5A optimal for space-constrained, automotive-qualified 24 V DC protection.
Availability
P4SMA7.5A-M3/5A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, consumer power adapter outputs, and telecom PoE data-line protection requiring stable component supply and halogen-free compliance.
Supply support for P4SMA7.5A-M3/5A 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 high-reliability transient suppression in automotive, industrial, and consumer electronics - delivering consistent clamping performance, AEC-Q101 qualification, and halogen-free manufacturing for demanding environments.
FAQ
What is the maximum clamping voltage of the P4SMA7.5A-M3/5A under surge conditions?
The P4SMA7.5A-M3/5A has a maximum clamping voltage (VC) of 11.3 V when subjected to its rated peak pulse current of 35.4 A using the standard 10/1000 µs waveform. This value is measured at TA = 25 °C and ensures downstream components remain within safe operating voltage limits during transient events. The P4SMA7.5A-M3/5A maintains this clamping performance across its full operating temperature range, supported by its low incremental surge resistance.
Does the P4SMA7.5A-M3/5A meet automotive qualification standards?
Yes, the P4SMA7.5A-M3/5A is AEC-Q101 qualified, as confirmed by Vishay's documentation for the P4SMA series with "_A" suffix and M3 halogen-free construction. This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and ESD robustness - validating its suitability for under-hood and chassis-mounted automotive applications. The P4SMA7.5A-M3/5A carries the HM3 automotive ordering variant designation per Vishay's ordering matrix.
What does the "M3/5A" suffix indicate in P4SMA7.5A-M3/5A?
The "M3" suffix denotes halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance and MSL Level 1 reflow capability (260 °C peak). The "/5A" indicates packaging in 13-inch diameter plastic tape and reel containing 7500 units - distinct from "/61" (7-inch reel, 1800 units). This packaging format supports high-volume SMT assembly and ensures traceable, moisture-safe handling for the P4SMA7.5A-M3/5A.
How does the thermal resistance of the P4SMA7.5A-M3/5A affect PCB layout?
The P4SMA7.5A-M3/5A 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. To maintain TJ ≤ 150 °C during repetitive surges, designers must allocate sufficient copper area and consider thermal vias - especially since its junction-to-lead resistance (RθJL) is 30 °C/W. Proper layout directly impacts the P4SMA7.5A-M3/5A's ability to sustain multiple 400 W pulses without thermal saturation.
Can the P4SMA7.5A-M3/5A be used in bidirectional configurations?
No, the P4SMA7.5A-M3/5A is strictly unidirectional, as indicated by its "A" suffix and cathode-band marking. Bidirectional variants use the "CA" suffix (e.g., P4SMA7.5CA). Using the P4SMA7.5A-M3/5A in reverse-biased AC signal paths would result in forward conduction during negative half-cycles, causing failure. For bidirectional protection, select the P4SMA7.5CA-M3/5A, which exhibits symmetric breakdown in both directions.
P4SMA7.5A-M3/5A 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):
- 6.4V
- Voltage - Breakdown (Min):
- 7.13V
- Voltage - Clamping (Max) @ Ipp:
- 11.3V
- Current - Peak Pulse (10/1000µs):
- 35.4A
- 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)
P4SMA7.5A-M3/5A FAQ
1.How can I place an order for P4SMA7.5A-M3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA7.5A-M3/5A 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 P4SMA7.5A-M3/5A reliable?
The price and inventory of P4SMA7.5A-M3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA7.5A-M3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA7.5A-M3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA7.5A-M3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA7.5A-M3/5A?
P4SMA7.5A-M3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA7.5A-M3/5A 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 P4SMA7.5A-M3/5A?
For technical support, including P4SMA7.5A-M3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA7.5A-M3/5A requirements.
6.How does Aetrix verify that P4SMA7.5A-M3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA7.5A-M3/5A 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 P4SMA7.5A-M3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA7.5A-M3/5A?
All P4SMA7.5A-M3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA7.5A-M3/5A, 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 P4SMA7.5A-M3/5A part is unused and in its original packaging.
Return procedure for P4SMA7.5A-M3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA7.5A-M3/5A Tags
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