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Taiwan Semiconductor Corporation P4SMA30A
- Part No.:
- P4SMA30A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA30A.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,855
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Product details
Overview
P4SMA30A from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for primary-side overvoltage protection in DC power rails. It features a 25.6 V working stand-off voltage, 28.5–31.5 V breakdown voltage at 1 mA, 41.4 V maximum clamping voltage at 10 A peak pulse current, and 400 W peak pulse power rating per 10/1000 μs waveform.
For engineers reviewing the P4SMA30A datasheet, P4SMA30A pinout, P4SMA30A application, or P4SMA30A equivalent, key selection criteria include clamping performance under ISO 7637-2 Pulse 1/2a/2b/3a/3b transients, DO-214AC (SMA) package compatibility with automated placement, and ≤1 μA reverse leakage at rated VWM - critical for low-power standby circuits and automotive body electronics.
Technical Context
The P4SMA30A operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology to achieve sub-1 ps response time and stable breakdown characteristics across -55°C to +150°C junction temperature range. Its clamping behavior follows standardized 10/1000 μs surge waveform compliance per ANSI/IEEE C62.35, with thermal derating above 25°C ambient per Figure 2.
Designed for single-die configuration in DO-214AC (SMA) package, the device exhibits 0.097 %/°C temperature coefficient of VBR and meets JESD201 Class 2 whisker resistance, supporting high-reliability industrial and automotive power supply designs where transient immunity and long-term solder joint integrity are mandatory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 25.6 V - Maximum continuous reverse operating voltage before significant leakage; sets upper limit for protected rail voltage |
| VBR min/max | 28.5 V / 31.5 V at 1 mA - Confirmed breakdown threshold range; ensures reliable turn-on during overvoltage events |
| VC @ IPPM | 41.4 V at 10 A - Clamped voltage during 400 W surge; defines worst-case stress on downstream components |
| IR @ VWM | <1 μA - Ultra-low leakage preserves battery life and signal integrity in always-on systems |
| PPPM | 400 W - Peak pulse power handling per 10/1000 μs waveform; supports ISO 7637-2 Pulse 1/2a/2b/3a/3b immunity |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood or enclosed power converter environments |
| Package | DO-214AC (SMA) - Standardized surface-mount outline with matte tin-plated leads compliant with J-STD-002 solderability |
Pinout & Package
DO-214AC (SMA) package: molded plastic case with cathode band marking; polarity-sensitive unidirectional configuration; 0.060 g typical weight; UL 94V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input reference node | Connected to protected line (e.g., +12 V rail); conducts during forward surge or bidirectional clamp if used with external circuitry |
| Cathode | Clamp output node | Connected to ground or low-impedance return path; sinks transient energy into GND during overvoltage event |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR tolerance and <1 μA leakage at VWM, critical for precision voltage clamping |
| Fast response time | Typically <1.0 ps - Ensures clamping activation before sensitive ICs experience overstress |
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) - required for automotive ECUs |
| Moisture sensitivity level | Level 1 per J-STD-020 - No bake requirement prior to reflow; supports standard SMT assembly flow |
| Halogen-free construction | Complies with IEC 61249-2-21 - Meets environmental requirements for RoHS-compliant industrial and consumer products |
Applications
| Switching Mode Power Supply (SMPS) | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Input-stage transient suppression on 24 V DC input rail of isolated flyback converter. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between VIN and GND to clamp load-dump spikes up to ±100 V. Use Value: Limits voltage seen by primary-side controller IC to ≤41.4 V, preventing latch-up or gate oxide damage during ISO 7637-2 Pulse 5a events. | Use Scenario: Protection of LIN bus transceiver power pin against battery reversal and jump-start surges. IC Role / Device Role / Timing Role: Standoff-rated TVS on 12 V supply rail feeding LIN PHY IC. Use Value: Maintains <1 μA leakage at 12 V nominal, avoiding false wake-up in sleep mode while clamping 400 W pulses without degradation. |
| LED Driver for Street Lighting | Industrial DC/DC Converter |
Use Scenario: Surge protection on constant-current LED string input subjected to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary-line TVS on 36 V input stage of buck-boost LED driver. Use Value: Withstands repeated 10/1000 μs surges up to 400 W without parameter shift, ensuring >50,000-hour field reliability. | Use Scenario: Input rail protection in 48 V-to-12 V isolated DC/DC module used in factory automation PLCs. IC Role / Device Role / Timing Role: Unidirectional clamping device on primary-side bulk capacitor rail. Use Value: 25.6 V VWM allows safe operation with 48 V nominal input (derated for ripple), while 41.4 V VC protects secondary-side regulation circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30A | Same VWM (25.6 V), higher PPPM (600 W), DO-214AA (SMB) package - 2.5 mm wider body | Higher surge margin suitable for harsher environments (e.g., railway traction converters); requires PCB pad revision | Select when >400 W surge headroom is needed and board space permits larger SMB footprint |
| 1.5SMC33A | Higher VWM (28.2 V), same VC (45.7 V), DO-214AB (SMC) package - 3.5 mm height, higher thermal mass | Better suited for 33 V systems; lower leakage (<1 μA) but larger mounting area | Choose for 33 V nominal rails or where enhanced thermal dissipation is required in high-temperature enclosures |
Compared with SMBJ30A and 1.5SMC33A, the P4SMA30A offers optimal balance of compact DO-214AC footprint, precise 25.6 V standoff, and verified ISO 7637-2 compliance - making it preferred for space-constrained automotive and industrial SMPS designs requiring exact voltage coordination.
Availability
P4SMA30A is available at Aetrix Electronics and suitable for switching mode power supplies, automotive body electronics, and industrial DC/DC converters requiring stable component supply with full traceability and lifecycle management.
Supply support for P4SMA30A 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, MOSFETs, and power management devices.
The P4SMA30A belongs to TSC's P4SMAxx(A) series of surface-mount TVS diodes engineered specifically for robust transient immunity in automotive, industrial, and lighting applications - emphasizing low leakage, tight VBR tolerance, and standardized DO-214AC packaging.
FAQ
What is the maximum clamping voltage of the P4SMA30A under standard test conditions?
The P4SMA30A has a maximum clamping voltage (VC) of 41.4 V when subjected to a 10 A peak pulse current with a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and represents the worst-case voltage imposed on protected circuitry during a standardized surge event. The P4SMA30A maintains this clamping performance consistently across its specified operating temperature range.
Is the P4SMA30A suitable for bidirectional transient protection?
No, the P4SMA30A is a unidirectional TVS diode intended for DC rail protection with defined polarity. For bidirectional applications, Taiwan Semiconductor specifies parts with "C" or "CA" suffixes (e.g., P4SMA30CA). Using P4SMA30A in reverse-biased configurations beyond its rated VWM may result in uncontrolled conduction or failure. Always verify polarity alignment in schematic and layout for P4SMA30A.
Does the P4SMA30A meet automotive qualification standards?
Yes, the P4SMA30A meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b transient immunity requirements - a core standard for automotive electronic control units. It also complies with JESD201 Class 2 whisker resistance and J-STD-020 moisture sensitivity Level 1, supporting standard reflow assembly. However, it is not AEC-Q200 qualified; system-level validation is required for automotive deployment.
What is the reverse leakage current specification for the P4SMA30A at its working voltage?
The P4SMA30A exhibits a maximum reverse leakage current (IR) of 1 μA when biased at its rated working stand-off voltage (VWM) of 25.6 V. This ultra-low leakage is confirmed at TA = 25°C and supports energy-sensitive applications such as battery-backed modules and always-on communication interfaces where standby power budget is constrained.
Can the P4SMA30A be used in place of the P4SMA30 without redesigning the PCB?
Yes, the P4SMA30A and P4SMA30 share identical DO-214AC (SMA) package dimensions, pinout, and thermal characteristics - enabling direct replacement. The key difference is tighter VBR tolerance (28.5–31.5 V vs. 27.0–33.0 V) and slightly higher VWM (25.6 V vs. 24.3 V) in P4SMA30A, improving noise margin. No PCB changes are required, and the P4SMA30A delivers enhanced consistency in clamping performance.
P4SMA30A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AC, SMA
- Series:
- P4SMA
- 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):
- 10A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA30A FAQ
1.How can I place an order for P4SMA30A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA30A 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 reliable?
The price and inventory of P4SMA30A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA30A is usually 5 days.
3.What payment methods are accepted for P4SMA30A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA30A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA30A?
P4SMA30A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA30A 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?
For technical support, including P4SMA30A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA30A requirements.
6.How does Aetrix verify that P4SMA30A is sourced from the original manufacturer or authorized distributors?
All P4SMA30A 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 meets industry standards.
7.What is the process for return or replacement of P4SMA30A?
All P4SMA30A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA30A, 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 part is unused and in its original packaging.
Return procedure for P4SMA30A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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