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Vishay General Semiconductor - Diodes Division P4SMA30AHE3/5A
- Part No.:
- P4SMA30AHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA30AHE3/5A.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,790
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Product details
Overview
P4SMA30AHE3/5A 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 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 automotive and industrial control systems.
For engineers reviewing the P4SMA30AHE3/5A datasheet, P4SMA30AHE3/5A pinout, P4SMA30AHE3/5A application, or P4SMA30AHE3/5A equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 120 °C/W junction-to-ambient thermal resistance, RoHS-compliant matte tin plating, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
The P4SMA30AHE3/5A operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its 28.5–31.5 V breakdown range at 1 mA test current. Its glass-passivated junction enables fast response (<1 ns) and low incremental surge resistance, critical for suppressing ESD and inductive switching spikes.
Thermally, it supports operation from –65 °C to +150 °C junction temperature, with derated peak pulse power above 25 °C per Fig. 2. The device meets J-STD-020 MSL Level 1 and is qualified to AEC-Q101 for automotive underhood applications - confirmed by HE3 suffix and revision "A" marking per ordering code.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 25.6 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC bias margin. |
| VBR (Breakdown Voltage) | 28.5–31.5 V at 1 mA - Avalanche conduction onset range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 41.4 V at 9.7 A IPPM - Peak voltage seen by protected circuit during 10/1000 µs surge; determines downstream component stress. |
| PPPM (Peak Pulse Power) | 400 W - Energy-handling capacity for single 10/1000 µs transient; sufficient for IEC 61000-4-5 Level 3 surges. |
| TJ max | +150 °C - Maximum junction temperature; enables use in high-ambient environments like engine control units. |
| RθJA | 120 °C/W - Thermal resistance to ambient on standard PCB pad; informs heatsinking requirements for repetitive surge duty. |
| AEC-Q101 Qualified | Yes - Validated for automotive electronics per stress test requirements including HTOL, TC, and HAST. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads. Cathode indicated by band; anode is unmarked end. Meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts reverse surge current to ground during overvoltage events. |
| Anode (unbanded end) | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop during avalanche conduction. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 surge events without derating below 91 V. |
| Glass passivated chip junction | Ensures stable breakdown characteristics and long-term reliability under repeated transient stress. |
| AEC-Q101 qualification (HE3 suffix) | Validates suitability for automotive powertrain and body electronics requiring extended temperature and life-cycle validation. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and reflow at 260 °C peak without baking - simplifies SMT manufacturing flow. |
| Low profile SMA package | Reduces board space vs. DO-15/DO-201; compatible with high-density layouts in ADAS and infotainment modules. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Digital Input Module |
|---|---|
Use Scenario: Protects microcontroller GPIO and CAN transceiver power rails from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamps reverse transients on 12 V supply rail upstream of LDO regulators. Use Value: Limits voltage excursion to ≤41.4 V during 400 W surges, preventing latch-up or gate oxide damage in 3.3 V/5 V logic. |
Use Scenario: Shields 24 V digital input optocoupler front-end from field-wiring induced surges and relay coil kickback. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbs energy before it reaches isolation barrier and MCU interface. Use Value: Maintains signal integrity by clamping transients within 1 ns, avoiding false triggering of input latches. |
| Consumer Appliance Motor Drive Board | Telecom Base Station Power Interface |
Use Scenario: Guards BLDC motor driver IC power pins against back-EMF spikes during commutation. IC Role / Device Role / Timing Role: Fast-response TVS diverts inductive energy away from gate drivers and bootstrap circuits. Use Value: Withstands 9.7 A peak pulse current without degradation, preserving MOSFET gate integrity over 10⁵ cycles. |
Use Scenario: Safeguards 48 V telecom power entry from lightning-induced surges on outdoor cable runs. IC Role / Device Role / Timing Role: Primary-level TVS on DC input rail limits surge propagation into DC/DC converters and PMICs. Use Value: 400 W rating meets GR-1089-CORE Level 3 surge immunity requirements for central office equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A-E3/57T | Same SMA package, 30 V VWM, but rated for 400 W with 8.3 ms half-sine surge; no AEC-Q101 qualification. | Targeted at commercial/industrial use only; not validated for automotive temperature cycling or humidity testing. | Select when AEC-Q101 is not required and cost sensitivity outweighs automotive qualification needs. |
| 1.5SMC30A | Higher-power SMC package (1500 W), same 30 V VWM, but larger footprint (7.11 × 6.22 mm vs. SMA's 4.93 × 3.99 mm). | Used where higher surge repetition rate or longer duration transients dominate; requires PCB layout change. | Choose when system-level surge testing exceeds 400 W or when thermal mass must absorb multiple pulses without derating. |
Compared with SMAJ30A-E3/57T and 1.5SMC30A, the P4SMA30AHE3/5A uniquely combines AEC-Q101 qualification, compact SMA footprint, and 400 W capability - making it optimal for space-constrained automotive modules needing certified reliability without redesigning thermal or mechanical layout.
Availability
P4SMA30AHE3/5A is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, and telecom power interfaces requiring stable component supply, AEC-Q101 compliance, and consistent surge performance across production batches.
Supply support for P4SMA30AHE3/5A 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 automotive-grade validation.
The P4SMA Series targets surface-mount transient suppression in space-constrained, high-reliability applications - engineered specifically for automotive, industrial, and telecom systems requiring fast clamping, low leakage, and AEC-Q101 compliance.
FAQ
What is the clamping voltage of the P4SMA30AHE3/5A under a 10/1000 µs surge?
The P4SMA30AHE3/5A has a maximum clamping voltage (VC) of 41.4 V at 9.7 A peak pulse current with a 10/1000 µs waveform. This value is measured per Figure 1 in the Vishay datasheet 88367 and defines the upper voltage limit imposed on protected circuitry during standardized surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is the P4SMA30AHE3/5A qualified for automotive applications?
Yes, the P4SMA30AHE3/5A is AEC-Q101 qualified, as confirmed by the "HE3" suffix and revision "A" designation in the ordering code. It undergoes stress testing for high-temperature operating life, temperature cycling, and humidity exposure per AEC-Q101 standards - making it suitable for under-hood and chassis-mounted automotive electronics.
What does the "/5A" in P4SMA30AHE3/5A indicate?
The "/5A" denotes the packaging configuration: 13-inch diameter plastic tape and reel containing 7500 units. This format supports high-volume SMT assembly lines and is distinct from "/61", which indicates a 7-inch reel with 1800 units - both compliant with EIA-481 standards for automated pick-and-place feeders.
How does the P4SMA30AHE3/5A differ from bidirectional TVS diodes like P4SMA30CA?
The P4SMA30AHE3/5A is unidirectional and features a cathode band for polarity-sensitive placement; it suppresses only reverse-polarity transients. In contrast, P4SMA30CA is bidirectional with no polarity marking and clamps surges in both directions - used where AC-coupled or differential signal lines require symmetrical protection without ground reference constraints.
What is the thermal resistance of the P4SMA30AHE3/5A, and how does it affect layout?
The P4SMA30AHE3/5A 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 datasheet Fig. 2. This value guides PCB copper area design: reducing RθJA requires larger thermal pads or internal planes, especially for repetitive surge conditions where self-heating impacts clamping consistency.
P4SMA30AHE3/5A 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:
- Discontinued at Digi-Key
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA30AHE3/5A FAQ
1.How can I place an order for P4SMA30AHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA30AHE3/5A 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 P4SMA30AHE3/5A reliable?
The price and inventory of P4SMA30AHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA30AHE3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA30AHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA30AHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA30AHE3/5A?
P4SMA30AHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA30AHE3/5A 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 P4SMA30AHE3/5A?
For technical support, including P4SMA30AHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA30AHE3/5A requirements.
6.How does Aetrix verify that P4SMA30AHE3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA30AHE3/5A 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 P4SMA30AHE3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA30AHE3/5A?
All P4SMA30AHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA30AHE3/5A, 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 P4SMA30AHE3/5A part is unused and in its original packaging.
Return procedure for P4SMA30AHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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