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Taiwan Semiconductor Corporation P4SMA47CA
- Part No.:
- P4SMA47CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA47CA.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
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Product details
Overview
P4SMA47CA from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode designed for robust overvoltage protection in DC power rails and signal lines. It features a 47V nominal breakdown voltage (VBR = 44.7–49.4 V), 400W peak pulse power rating (10/1000 µs), and clamps transients to ≤64.8 V at 6.4 A, making it suitable for automotive load-dump and ISO 7637-2 Pulse 1/2a/2b/3a/3b compliant systems.
For engineers reviewing the P4SMA47CA datasheet, P4SMA47CA pinout, P4SMA47CA application, or P4SMA47CA equivalent, key selection criteria include its bidirectional configuration, DO-214AC (SMA) package compatibility with automated placement, low leakage (<1 µA at 40.2 V), and guaranteed clamping performance under standardized surge waveforms.
Technical Context
The P4SMA47CA employs a glass-passivated silicon junction optimized for fast transient response (<1.0 ps typical) and stable breakdown characteristics across -55°C to +150°C operating junction temperature. Its bidirectional structure enables symmetrical clamping in both polarities without external polarity management.
It meets ISO 7637-2 test requirements for automotive electronics, including Pulse 1 (inductive load dump suppression), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling noise), with a maximum clamping voltage of 64.8 V at 6.4 A peak impulse current under 10/1000 µs waveform.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 44.7 V / 49.4 V at 1.0 mA test current - defines reliable conduction onset range for overvoltage triggering |
| VWM | 40.2 V - maximum continuous reverse working voltage before significant leakage begins |
| IR @ VWM | <1 µA - ensures minimal standby power loss and signal integrity in high-impedance circuits |
| VC @ IPPM | 64.8 V at 6.4 A (10/1000 µs) - actual clamped voltage protecting downstream ICs from destructive surges |
| PPPM | 400 W - peak surge energy absorption capacity per single transient event |
| TJ max | +150 °C - enables operation in under-hood automotive and industrial power supply environments |
| Package | DO-214AC (SMA) - industry-standard surface-mount outline compatible with J-STD-002 solderability and JESD201 Class 2 whisker resistance |
Pinout & Package
DO-214AC (SMA) package: molded plastic case with matte tin-plated leads; polarity indicated by cathode band (bidirectional operation eliminates functional polarity dependence).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (marked band) | Transient current path terminal | Bidirectional conduction - either terminal serves as anode or cathode depending on transient polarity; no DC bias dependency |
| Case | Non-electrical mechanical interface | UL 94V-0 rated molding compound; provides thermal path and mechanical anchoring during reflow |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures long-term reliability and stable VBR drift <0.1%/°C over temperature and life |
| Fast response time | <1.0 ps typical - initiates clamping before most microcontrollers or analog ICs experience latch-up |
| ISO 7637-2 compliance | Validated for Pulse 1, 2a, 2b, 3a, and 3b - eliminates need for additional system-level validation in automotive designs |
| Moisture sensitivity level | MSL Level 1 (per J-STD-020) - allows unlimited floor life and standard SMT processing without dry-pack requirements |
| Halogen-free construction | Complies with IEC 61249-2-21 - supports RoHS-compliant and environmentally regulated end equipment |
Applications
| Automotive Body Control Module (BCM) | Industrial DC/DC Converter Input Stage |
|---|---|
Use Scenario: Protects microcontroller I/O and CAN transceiver power rails from load-dump spikes and battery reversal events in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Bidirectional clamping device placed directly at connector entry point to shunt surge energy before reaching sensitive logic. Use Value: Clamps 400 W transients to ≤64.8 V while maintaining <1 µA leakage at 40.2 V, preserving sleep-mode current budgets and enabling ISO 7637-2 certification. |
Use Scenario: Shields primary-side MOSFET gate drivers and controller ICs from switching-induced voltage overshoot in isolated flyback or forward converters. IC Role / Device Role / Timing Role: Fast-acting voltage clamp on input bus rail to limit dv/dt stress on upstream capacitors and downstream regulators. Use Value: Responds in <1.0 ps to suppress ringing and cross-conduction risks, with 400 W surge rating matching typical 8.3 ms half-sine surge test profiles. |
| LED Driver Power Supply | Smart Meter Communication Interface |
Use Scenario: Safeguards constant-current LED driver ICs against line surges and ESD events in outdoor streetlight applications. IC Role / Device Role / Timing Role: Primary overvoltage protector on AC/DC rectified output rail, placed before bulk capacitor and controller. Use Value: Maintains 40.2 V working stand-off while clamping 6.4 A transients to 64.8 V - prevents LED string open-circuit failure and driver IC latch-up. |
Use Scenario: Provides secondary-side surge immunity on RS-485 or PLC communication lines in utility smart meters exposed to induced lightning surges. IC Role / Device Role / Timing Role: Bidirectional TVS on differential data pair to absorb common-mode transients without disrupting signal integrity. Use Value: Symmetrical clamping ensures equal protection for both A and B lines; DO-214AC footprint enables compact layout adjacent to connector. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ47CA (Bourns) | Same 47 V bidirectional rating, but SMB package (DO-214AA); 600 W PPPM; higher IPPM (10.3 A) | Higher surge margin suits harsher industrial environments; larger footprint may conflict with dense layouts | Select when >400 W surge headroom is required and PCB space permits SMB outline |
| 1.5KE47CA (ON Semiconductor) | Through-hole DO-15 package; same 47 V rating; 1500 W PPPM; slower response (~1 ns) | Designed for legacy board assembly or high-energy surge zones where manual repairability matters | Choose for through-hole prototyping or where 1500 W single-event tolerance outweighs SMT automation benefits |
Compared with SMBJ47CA and 1.5KE47CA, the P4SMA47CA offers optimal balance of 400 W surge capability, ultrafast <1.0 ps response, and compact DO-214AC footprint - ideal for space-constrained automotive and industrial SMT designs requiring ISO 7637-2 compliance without over-engineering.
Availability
P4SMA47CA is available at Aetrix Electronics and suitable for automotive body control modules, industrial DC/DC converter input stages, and LED driver power supplies requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for P4SMA47CA 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 semiconductor manufacturer specializing in discrete power devices, TVS diodes, and rectifiers with global AEC-Q101 qualified production lines.
The P4SMA47CA belongs to TSC's P4SMAx(A) series of surface-mount TVS diodes engineered specifically for ISO 7637-2-compliant automotive and industrial surge protection with automated placement compatibility and MSL Level 1 handling.
FAQ
What is the breakdown voltage range for P4SMA47CA?
The P4SMA47CA has a specified breakdown voltage range of 44.7 V to 49.4 V at 1.0 mA test current (VBR), measured per ANSI/IEEE C62.35 standards. This range ensures consistent overvoltage triggering across production lots and temperature extremes, supporting reliable design margins in automotive and industrial applications where the P4SMA47CA is deployed.
Is P4SMA47CA unidirectional or bidirectional?
The "CA" suffix in P4SMA47CA explicitly denotes a bidirectional configuration, meaning it provides symmetrical transient suppression in both polarities without requiring orientation during placement. This is confirmed in the datasheet's "Devices for Bipolar Applications" section, which states that CA-suffix types are intended for bidirectional use - a critical distinction from "A"-suffix unidirectional variants like P4SMA47A.
What is the maximum clamping voltage of P4SMA47CA under surge conditions?
The P4SMA47CA clamps to a maximum of 64.8 V when subjected to a 10/1000 µs surge waveform at its rated peak pulse current of 6.4 A. This value is measured per standardized test conditions and represents the upper limit of voltage seen by protected circuitry - a key parameter used to verify safe operation of downstream components such as microcontrollers or gate drivers in systems using the P4SMA47CA.
Does P4SMA47CA meet automotive surge immunity standards?
Yes, the P4SMA47CA is explicitly rated to meet ISO 7637-2 for automotive transient immunity, covering Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling). Its 400 W peak pulse power rating and sub-1.0 ps response time are validated to suppress these standardized waveforms - a requirement documented in the official Taiwan Semiconductor datasheet for the P4SMA47CA.
What package type does P4SMA47CA use, and is it RoHS compliant?
The P4SMA47CA 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. It is fully RoHS compliant and halogen-free per IEC 61249-2-21 - verified in the manufacturer's documentation and reflected in the P4SMA47CA's material declarations and packaging specifications.
P4SMA47CA 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):
- 40.2V
- Voltage - Breakdown (Min):
- 44.7V
- Voltage - Clamping (Max) @ Ipp:
- 64.8V
- Current - Peak Pulse (10/1000µs):
- 6.4A
- 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)
P4SMA47CA FAQ
1.How can I place an order for P4SMA47CA through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA47CA 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 P4SMA47CA reliable?
The price and inventory of P4SMA47CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA47CA is usually 5 days.
3.What payment methods are accepted for P4SMA47CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA47CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA47CA?
P4SMA47CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA47CA 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 P4SMA47CA?
For technical support, including P4SMA47CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA47CA requirements.
6.How does Aetrix verify that P4SMA47CA is sourced from the original manufacturer or authorized distributors?
All P4SMA47CA 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 P4SMA47CA meets industry standards.
7.What is the process for return or replacement of P4SMA47CA?
All P4SMA47CA units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA47CA, 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 P4SMA47CA part is unused and in its original packaging.
Return procedure for P4SMA47CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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