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Taiwan Semiconductor Corporation P4SMA30C
- Part No.:
- P4SMA30C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA30C.pdf
- Description:
- 400W, 30V, 10%, BIDIRECTIONAL, T
- Quantity:
- Payment:
- Shipping:
Inventory:3,739
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Product details
Overview
P4SMA30C from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, rated for 400W peak pulse power, 30V breakdown voltage (min 27V, max 33V), and clamping voltage of 43.5V at 9.6A. It protects DC/DC converters and SMPS inputs against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the P4SMA30C datasheet, P4SMA30C pinout, P4SMA30C application, or P4SMA30C equivalent, this page delivers verified electrical specs, clamping behavior under 10/1000μs surge, bidirectional conduction capability, JEDEC-compliant thermal derating, and direct-fit alternatives for automotive and industrial overvoltage protection.
Technical Context
The P4SMA30C is a unidirectional/bidirectional TVS diode with glass-passivated junction and fast response time (<1.0 ps). Its bidirectional configuration enables symmetrical clamping in AC-coupled or floating signal lines without polarity sensitivity.
It operates across –55°C to +150°C junction temperature range, supports 1.0 mA test current per ANSI/IEEE C62.35, and meets J-STD-020 moisture sensitivity level 1. Clamping occurs at 43.5V under 10/1000μs waveform with 9.6A peak impulse current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 27.0 V / 33.0 V - Ensures reliable breakdown activation above system working voltage (24.3 V VWM) while accommodating process variation. |
| VWM | 24.3 V - Maximum continuous reverse stand-off voltage; defines highest DC operating voltage before leakage rises significantly. |
| VC@IPPM | 43.5 V - Clamping voltage at 9.6 A (10/1000μs); limits downstream component stress during surge events. |
| PPPM | 400 W - Peak pulse power rating; determines survivability against standardized automotive load-dump and inductive-switching transients. |
| IR@VWM | 1 μA - Reverse leakage at 24.3 V; ensures minimal quiescent power loss and signal integrity in high-impedance circuits. |
| TJ max | +150 °C - Maximum junction temperature; supports operation in under-hood automotive and enclosed industrial environments. |
| Package | DO-214AC (SMA) - Surface-mount outline with 0.060 g mass, UL 94V-0 molding, and matte tin-plated leads compliant with J-STD-002 solderability. |
Pinout & Package
DO-214AC (SMA) package: molded plastic case with axial leads, cathode band marking for unidirectional variants; P4SMA30C is bidirectional and marked with "BQJ" code - no polarity marking required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional terminal pair | Both terminals function identically; no polarity dependency - simplifies PCB layout and eliminates orientation errors in AC or floating applications. |
| Case | Non-conductive plastic body | Provides mechanical protection and electrical isolation; UL 94V-0 rating ensures flame resistance in safety-critical assemblies. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR tolerance (±10%) and low leakage (<1 µA) over lifetime and temperature cycling. |
| Fast response time <1.0 ps | Clamps ESD and fast transients before sensitive ICs experience overstress - critical for CAN, LIN, and sensor interface protection. |
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling), enabling drop-in use in automotive ECUs. |
| Moisture sensitivity level 1 | No floor life limitation or bake requirement before reflow - reduces manufacturing overhead and avoids moisture-induced popcorning. |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS directives - supports green manufacturing and export compliance without performance trade-offs. |
Applications
| Automotive Body Control Module (BCM) | Industrial DC/DC Converter Input |
|---|---|
Use Scenario: Protects microcontroller I/O and LIN bus transceivers from battery line transients during load dump and jump-start events. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed between LIN line and ground, absorbing ±100V pulses without polarity reversal. Use Value: Maintains signal integrity below 43.5V clamping threshold, preventing latch-up or damage to 5V-tolerant transceivers. | Use Scenario: Shields isolated flyback controller feedback path from reflected switching noise and input surges in 24V-to-5V converters. IC Role / Device Role / Timing Role: Standoff protection on optocoupler input side, limiting voltage excursions during 400W surge events. Use Value: Enables robust operation at 24.3V working voltage while surviving 9.6A impulses - eliminating need for series resistors or RC snubbers. |
| LED Driver Power Input | Smart Meter Power Supply |
Use Scenario: Guards constant-current LED driver ICs against inrush and lightning-induced surges on 12–24V DC rails. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input capacitor node, shunting energy before it reaches buck controller. Use Value: 400W rating handles repetitive 10/1000μs surges common in outdoor lighting; DO-214AC footprint allows compact placement near connector. | Use Scenario: Secures metering SoC power supply against grid-side transients entering via AC-DC adapter input. IC Role / Device Role / Timing Role: Secondary-side TVS on 5V rail, complementing primary MOV and providing precise clamping where MOV tolerance is too wide. Use Value: 1μA leakage preserves battery backup runtime; 43.5V clamping prevents brownout or reset during 1kV/0.5J surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30CA (Bourns) | Same DO-214AA (SMB) package, 400W rating, VBR = 33.3–36.8V, VC = 48.4V @ 8.3A - higher clamping voltage, lower IPPM. | Less effective clamping margin for 3.3V/5V logic interfaces due to 48.4V VC; better suited for 24V+ systems. | Select when board space permits SMB footprint and higher clamping is acceptable for cost-sensitive industrial designs. |
| 1.5KE30CA (ON Semiconductor) | Through-hole DO-15 package, 1500W rating, VBR = 31.5–34.5V, VC = 48.4V @ 31A - higher power but incompatible mounting and larger footprint. | Not suitable for automated SMT assembly; used where manual repair or high-energy surges dominate (e.g., telecom power entry). | Choose only for legacy through-hole designs or where >1kW surge handling is mandatory - not a drop-in replacement. |
Compared with SMBJ30CA and 1.5KE30CA, the P4SMA30C offers tighter VBR tolerance (27–33V vs. 33–37V), lower clamping (43.5V vs. ≥48.4V), and SMT-optimized DO-214AC packaging - making it preferable for space-constrained automotive and industrial modules requiring precise voltage limiting.
Availability
P4SMA30C is available at Aetrix Electronics and suitable for automotive body control modules, industrial DC/DC converter inputs, and smart meter power supplies requiring stable component supply and full ISO 7637-2 compliance.
Supply support for P4SMA30C 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, and MOSFETs for automotive and industrial markets.
The P4SMA series targets high-reliability transient suppression in harsh environments, with design focus on ISO 7637-2 compliance, JEDEC-qualified packaging, and tight parametric control for automotive-grade applications.
FAQ
What is the breakdown voltage range for P4SMA30C?
The P4SMA30C has a guaranteed breakdown voltage range of 27.0 V to 33.0 V at 1.0 mA test current (VBR min/max), measured per ANSI/IEEE C62.35. This range ensures consistent turn-on behavior across production lots while maintaining safe margin above its 24.3 V working stand-off voltage. The P4SMA30C's specified VBR is validated using square-wave pulses of 300 µs duration.
Is P4SMA30C unidirectional or bidirectional?
The P4SMA30C is a bidirectional TVS diode, indicated by the "C" suffix per Taiwan Semiconductor's ordering convention. It provides symmetrical clamping in both polarities, making it suitable for AC-coupled lines, differential buses, or floating grounds where polarity cannot be assumed. Unlike unidirectional P4SMA30A, the P4SMA30C does not have a cathode band marking.
What is the maximum clamping voltage of P4SMA30C under surge conditions?
The P4SMA30C clamps to a maximum of 43.5 V when subjected to a 10/1000 µs surge waveform at its rated peak pulse current of 9.6 A. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Does P4SMA30C meet automotive transient immunity standards?
Yes, the P4SMA30C meets ISO 7637-2 requirements for Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling), as confirmed in Taiwan Semiconductor's official documentation. Its 400W peak pulse power rating and sub-1 ps response time enable reliable suppression of automotive-level transients without derating in ambient temperatures up to +125°C.
What package type and mounting compatibility does P4SMA30C use?
The P4SMA30C uses the DO-214AC (SMA) surface-mount package with matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance. Its 0.060 g mass and UL 94V-0 molding support reflow assembly without moisture sensitivity concerns (MSL Level 1), making it compatible with standard high-volume SMT lines used for automotive and industrial PCBs.
P4SMA30C 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 24.3V
- Voltage - Breakdown (Min):
- 27V
- Voltage - Clamping (Max) @ Ipp:
- 43.5V
- Current - Peak Pulse (10/1000µs):
- 9.6A
- 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)
P4SMA30C FAQ
1.How can I place an order for P4SMA30C through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA30C 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 P4SMA30C reliable?
The price and inventory of P4SMA30C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA30C is usually 5 days.
3.What payment methods are accepted for P4SMA30C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA30C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA30C?
P4SMA30C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA30C 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 P4SMA30C?
For technical support, including P4SMA30C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA30C requirements.
6.How does Aetrix verify that P4SMA30C is sourced from the original manufacturer or authorized distributors?
All P4SMA30C 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 P4SMA30C meets industry standards.
7.What is the process for return or replacement of P4SMA30C?
All P4SMA30C units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA30C, 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 P4SMA30C part is unused and in its original packaging.
Return procedure for P4SMA30C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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