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Vishay General Semiconductor - Diodes Division P4SMA30AHE3_A/H
- Part No.:
- P4SMA30AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA30AHE3_A/H.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,894
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Product details
Overview
P4SMA30AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping inductive switching transients and ESD events. 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 rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial power supplies.
For engineers reviewing the P4SMA30AHE3_A/H datasheet, P4SMA30AHE3_A/H pinout, P4SMA30AHE3_A/H application, or P4SMA30AHE3_A/H equivalent, key selection considerations include its AEC-Q101 qualification, unidirectional polarity, 120 °C/W junction-to-ambient thermal resistance, and compatibility with automated SMT placement on standard 0.2" × 0.2" copper pads.
Technical Context
The P4SMA30AHE3_A/H operates as a unidirectional clamping device: reverse-biased during normal operation, it remains high-impedance until voltage exceeds VBR (28.5–31.5 V), then rapidly transitions to low-impedance conduction to limit transient overvoltage. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repetitive surge stress.
Designed for 10/1000 µs waveform compliance, it delivers 400 W peak pulse power at TA = 25 °C (derated above 25 °C per Fig. 2), with 3.3 W steady-state power dissipation and 40 A non-repetitive forward surge current rating. The device meets MSL Level 1 and is qualified to AEC-Q101 for automotive-grade robustness.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 25.6 V - Maximum continuous reverse voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 28.5–31.5 V at 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 41.4 V at IPPM = 9.7 A - Peak voltage seen by protected circuit during 10/1000 µs surge; critical for downstream IC survival. |
| PPPM (Peak Pulse Power) | 400 W - Energy-handling capacity for standardized 10/1000 µs surge; enables protection against IEC 61000-4-5 Level 3/4 surges. |
| TJ max | +150 °C - Maximum junction temperature; supports operation in under-hood automotive environments and industrial enclosures. |
| RθJA | 120 °C/W - Thermal resistance from junction to ambient on minimum pad layout; informs heatsinking requirements for sustained surge duty. |
| AEC-Q101 Qualified | Yes - Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band at one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to system ground or lower-potential rail; defines polarity for unidirectional clamping. |
| Cathode | Clamping output / Surge current sink | Connected to protected line (e.g., 24 V supply or sensor input); conducts surge current to ground during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables robust protection against high-energy transients in 12 V/24 V automotive and industrial power rails without derating. |
| AEC-Q101 qualification | Validates reliability for automotive applications including powertrain, chassis, and infotainment systems per stress-test requirements. |
| Glass passivated chip junction | Ensures stable VBR over temperature and lifetime, minimizing drift in clamping performance across 15-year service life. |
| MSL Level 1 (260 °C peak reflow) | Supports single-pass lead-free reflow assembly without moisture-related popcorn failure or delamination. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns rise time), improving protection of sensitive CMOS inputs. |
Applications
| Automotive Power Supply Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 24 V power inputs in engine control modules (ECMs) from load-dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between battery rail and DC-DC converter input. Use Value: Limits transient voltage to ≤41.4 V, preventing damage to 36 V-rated input stages while sustaining 400 W surge energy. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors in PLC I/O modules from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor mounted directly at connector interface. Use Value: Clamps 8 kV contact ESD pulses within <1 ns, preserving signal integrity and avoiding latch-up in 12-bit ADC front-ends. |
| Consumer Appliance Motor Drive Protection | Telecom DC Power Interface Protection |
Use Scenario: Safeguarding H-bridge gate drivers in smart home HVAC blower assemblies from flyback voltage spikes. IC Role / Device Role / Timing Role: Fast-response TVS connected across motor terminals and driver supply rails. Use Value: Absorbs 400 W inductive energy without degradation, maintaining MOSFET gate oxide integrity during frequent PWM commutation. |
Use Scenario: Guarding -48 V telecom power feeds against lightning-induced surges entering central office equipment. IC Role / Device Role / Timing Role: Primary-stage unidirectional clamp on DC input bus prior to hot-swap controller. Use Value: Withstands 10/1000 µs surges up to 9.7 A while holding clamped voltage below -55 V, ensuring upstream rectifier survivability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30A-E3/5A | Same VWM (25.6 V), identical VBR (28.5–31.5 V), but rated for 400 W at 25 °C only; no AEC-Q101 qualification. | Commercial-grade use only; not approved for automotive under-hood deployment or extended temperature cycling. | Select when cost sensitivity outweighs automotive qualification requirements and thermal derating is managed externally. |
| 1.5SMC33A | Higher VWM (28.2 V), higher VC (53.3 V at 10.3 A), larger SMC (DO-214AB) package; same 400 W rating. | Requires larger PCB footprint and different pad layout; better suited for high-current industrial mains interfaces. | Choose when higher clamping margin is acceptable and board space allows SMC package; not drop-in compatible. |
Compared with SMAJ30A-E3/5A, P4SMA30AHE3_A/H adds AEC-Q101 validation and tighter thermal specs for automotive use; versus 1.5SMC33A, it offers smaller SMA footprint and lower clamping voltage but reduced surge current headroom.
Availability
P4SMA30AHE3_A/H is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface design, and telecom DC feed protection requiring stable component supply, traceable sourcing, and long-term lifecycle support.
Supply support for P4SMA30AHE3_A/H 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 optimization.
The P4SMA Series targets high-reliability transient suppression in automotive, industrial, and telecom systems, delivering standardized 400 W surge capability in compact SMA packages with AEC-Q101 and RoHS compliance.
FAQ
What is the clamping voltage of the P4SMA30AHE3_A/H under a 10/1000 µs surge?
The P4SMA30AHE3_A/H 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 standard test conditions (TA = 25 °C, mounted on 0.2" × 0.2" copper pads) and defines the upper voltage limit imposed on protected circuits during surge events. The P4SMA30AHE3_A/H maintains this clamping performance across its specified operating temperature range.
Is the P4SMA30AHE3_A/H qualified for automotive applications?
Yes, the P4SMA30AHE3_A/H is AEC-Q101 qualified, as confirmed by Vishay's documentation and ordering code suffix "HE3". This qualification covers stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing - making the P4SMA30AHE3_A/H suitable for under-hood and chassis-mounted automotive electronics where reliability under thermal and mechanical stress is critical.
What is the standoff voltage (VWM) rating of the P4SMA30AHE3_A/H?
The P4SMA30AHE3_A/H has a maximum working peak reverse voltage (VWM) of 25.6 V. This is the highest continuous DC or RMS voltage the device can withstand in reverse bias without entering breakdown. Engineers must ensure that normal operating voltage on the protected line remains below 25.6 V to prevent leakage current increase or premature conduction - a key constraint when selecting the P4SMA30AHE3_A/H for 24 V systems.
Does the P4SMA30AHE3_A/H have polarity markings, and how is it oriented on the PCB?
Yes, the P4SMA30AHE3_A/H is unidirectional and marked with a cathode band at one end of the SMA (DO-214AC) package. During PCB layout, the banded end must be connected to the line being protected (e.g., 24 V rail), while the anode connects to ground. Reversing orientation renders the device ineffective for transient suppression, as forward conduction would occur during normal operation.
What is the thermal resistance and maximum junction temperature of the P4SMA30AHE3_A/H?
The P4SMA30AHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on minimum recommended pad layout, and a maximum junction temperature (TJ max) of +150 °C. These values define its thermal limits: sustained power dissipation must remain below 3.3 W at 25 °C ambient, and derating is required above that temperature per Figure 2 in the datasheet. The P4SMA30AHE3_A/H is rated for full performance up to TJ = 150 °C.
P4SMA30AHE3_A/H 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:
- -
- 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_A/H FAQ
1.How can I place an order for P4SMA30AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA30AHE3_A/H 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_A/H reliable?
The price and inventory of P4SMA30AHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA30AHE3_A/H is usually 5 days.
3.What payment methods are accepted for P4SMA30AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA30AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA30AHE3_A/H?
P4SMA30AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA30AHE3_A/H 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_A/H?
For technical support, including P4SMA30AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA30AHE3_A/H requirements.
6.How does Aetrix verify that P4SMA30AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA30AHE3_A/H 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_A/H meets industry standards.
7.What is the process for return or replacement of P4SMA30AHE3_A/H?
All P4SMA30AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA30AHE3_A/H, 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_A/H part is unused and in its original packaging.
Return procedure for P4SMA30AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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