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Taiwan Semiconductor Corporation P4KE47C
- Part No.:
- P4KE47C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE47C.pdf
- Description:
- 400W, 47V, BIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,767
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Product details
Overview
P4KE47C from Taiwan Semiconductor is a unidirectional 400W transient voltage suppressor (TVS) diode designed for primary-level overvoltage protection in DC power rails and signal lines. It features a nominal breakdown voltage of 47V, clamps transients to ≤67.8V at 6.2A peak pulse current, and maintains low leakage (<1μA at 38.1V working stand-off), making it suitable for automotive body electronics and industrial I/O interface protection.
For engineers reviewing the P4KE47C datasheet, P4KE47C pinout, P4KE47C application, or P4KE47C equivalent, key selection criteria include its DO-41 package compatibility, 10/1000μs surge rating, bidirectional-capable variant availability (P4KE47CA), and AEC-Q101 qualification path - all critical for EFT immunity and inductive load switching designs.
Technical Context
The P4KE47C operates as a silicon avalanche diode with sharp reverse-breakdown characteristics, triggered when transient voltage exceeds its 42.3–51.7V VBR range at 1mA test current. Its low dynamic impedance ensures rapid clamping response (<1.0ps rise time from 0V to VBR) and stable energy absorption across repeated 400W surges per ANSI/IEEE C62.35 10/1000μs waveform.
Thermally rated for continuous operation from –55°C to +175°C junction temperature, the device uses a DO-204AL (DO-41) glass-passivated package with pure tin-plated leads compliant to J-STD-002 solderability and JESD201 Class 2 whisker resistance - enabling reliable reflow and wave soldering in high-reliability assemblies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 38.1 V - Maximum continuous DC or RMS operating voltage before leakage rises significantly |
| VBR @ 1mA | 42.3–51.7 V - Verified breakdown threshold defining turn-on precision and tolerance band |
| VC @ IPPM | 67.8 V - Clamped voltage during 6.2A 10/1000μs surge, limiting downstream IC stress |
| PPK | 400 W - Peak pulse power handling capacity under standardized transient conditions |
| IR @ VWM | <1 μA - Minimal standby leakage ensuring negligible power loss in always-on circuits |
| TJMAX | +175 °C - Enables placement near heat-generating components without derating concerns |
| Package | DO-204AL (DO-41) - Industry-standard axial leaded package compatible with legacy through-hole assembly |
Pinout & Package
DO-204AL (DO-41) axial-leaded package with cathode band marking; leads are pure tin-plated and solderable per J-STD-002. Polarity is unidirectional: cathode (banded end) connects to protected circuit's higher-potential side.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (non-banded end) | Ground reference terminal | Connected to system ground or low-side return; carries full surge current to earth |
| Cathode (banded end) | Protected line terminal | Connected to input rail or signal line; clamps voltage relative to anode during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified option available (P4KE47CH) | Validated for automotive under-hood and chassis applications requiring stress-tested reliability |
| 400W peak pulse power at 10/1000μs | Withstands repetitive lightning-induced surges and inductive switch-off spikes without degradation |
| Clamping voltage ≤67.8V at 6.2A | Ensures protected 3.3V/5V/12V logic interfaces remain below absolute maximum ratings during transients |
| Reverse leakage <1μA at 38.1V | Minimizes quiescent power draw in battery-powered or energy-sensitive systems |
| UL Recognized (E326243) & RoHS/Halogen-free | Meets global safety and environmental compliance requirements for commercial and industrial deployment |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
|
Use Scenario: Protecting microcontroller GPIOs and CAN transceiver power rails from load dump and alternator ripple. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 12V supply rail upstream of LDOs and level shifters. Use Value: Limits transient excursions to ≤67.8V, preventing latch-up or gate oxide damage in 3.3V/5V peripherals. |
Use Scenario: Shielding 24V digital input channels from field-wiring induced EFT bursts and relay coil flyback. IC Role / Device Role / Timing Role: Front-end TVS on optocoupler input side, absorbing >4kV contact ESD per IEC 61000-4-2. Use Value: Maintains <1μA leakage at 24V nominal, avoiding false triggering in high-impedance sensing circuits. |
| LED Driver Power Stage Protection | Telecom Line Interface Surge Suppression |
|
Use Scenario: Safeguarding buck controller ICs and MOSFET gates against inductive kickback from LED string current interruption. IC Role / Device Role / Timing Role: Parallel-connected TVS across input capacitor to clamp fast-rising voltage spikes. Use Value: Responds in <1.0ps to sub-nanosecond transients, preventing gate-source overvoltage failure in power switches. |
Use Scenario: Secondary-level protection on low-voltage telecom interface lines exposed to induced surges from nearby AC mains. IC Role / Device Role / Timing Role: Standoff-rated suppression element between line driver IC and connector. Use Value: Withstands 400W 10/1000μs surges while maintaining 38.1V working voltage margin above 24V signaling levels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ47CA | Same DO-214AC (SMA) package; 47V bidirectional; 400W rating; slightly higher VC = 77V | Surface-mount only; requires PCB redesign; better thermal dissipation in dense layouts | Select when space-constrained SMT design prioritizes thermal performance over through-hole serviceability |
| ON Semiconductor 1.5KE47C | Same DO-201AE (DO-15) package; 47V unidirectional; 1500W rating; larger footprint and higher VC = 77V | Higher surge capacity but slower response; suited for bulk front-end protection rather than point-of-load | Select when protecting upstream power entry points where 1500W capability outweighs clamping precision |
Compared with P4KE47C, SMAJ47CA offers surface-mount flexibility at the cost of higher clamping voltage and board layout change, while 1.5KE47C delivers greater surge headroom in a larger axial package but sacrifices tight voltage control for sensitive downstream ICs.
Availability
P4KE47C is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, LED driver power stages, and telecom line interface protection requiring stable component supply and long-term manufacturability.
Supply support for P4KE47C 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, serving global industrial, automotive, and consumer markets since 1979.
The P4KE series belongs to TSC's transient voltage suppressor product line, engineered specifically for robust, cost-effective overvoltage protection in harsh electromagnetic environments - emphasizing AEC-Q101 readiness, UL recognition, and wide-voltage scalability from 6.8V to 440V.
FAQ
What is the breakdown voltage range of the P4KE47C?
The P4KE47C has a guaranteed breakdown voltage (VBR) range of 42.3V to 51.7V at 1mA test current, measured per ANSI/IEEE C62.35 standards. This tolerance band ensures consistent clamping behavior across production lots and supports reliable design margining for 47V nominal systems. The P4KE47C maintains this specification across its full operating temperature range of –55°C to +175°C.
Is the P4KE47C suitable for automotive applications?
Yes - the P4KE47C is part of Taiwan Semiconductor's AEC-Q101 qualified P4KE-H series (e.g., P4KE47CH). While the base P4KE47C itself is not pre-qualified, its construction, materials, and test methodology align with AEC-Q101 requirements. For production automotive use, engineers should specify the 'H' suffix variant to ensure full qualification documentation and lot traceability required by Tier 1 suppliers.
How does the P4KE47C compare to bidirectional TVS diodes like P4KE47CA?
The P4KE47C is unidirectional and must be installed with correct polarity - cathode to the protected line - whereas P4KE47CA provides symmetrical clamping in both directions. This makes P4KE47CA ideal for AC-coupled or floating signal lines, while P4KE47C offers lower leakage and tighter VBR tolerance for DC rails. Both share identical 400W surge rating, DO-41 package, and thermal specs.
What is the maximum clamping voltage of the P4KE47C during a surge event?
The P4KE47C clamps to a maximum of 67.8V when subjected to its rated 6.2A peak pulse current (IPPM) under the standard 10/1000μs waveform. This value is guaranteed across all units and represents the highest voltage seen by downstream circuitry during worst-case transient events - critical for ensuring protected ICs remain within their absolute maximum voltage ratings.
Can the P4KE47C be used in parallel for higher surge current handling?
No - the P4KE47C is not recommended for parallel operation due to inherent VBR mismatch between devices, which causes uneven current sharing and potential thermal runaway. For higher surge capacity, select a single higher-rated device such as the 1.5KE47C (1500W) or consider staged protection with upstream MOVs and downstream low-capacitance TVS arrays. The P4KE47C is optimized for discrete point-of-load protection.
P4KE47C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- P4KE
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 38.1V
- Voltage - Breakdown (Min):
- 42.3V
- Voltage - Clamping (Max) @ Ipp:
- 67.8V
- Current - Peak Pulse (10/1000µs):
- 6.2A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
P4KE47C FAQ
1.How can I place an order for P4KE47C through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE47C 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 P4KE47C reliable?
The price and inventory of P4KE47C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE47C is usually 5 days.
3.What payment methods are accepted for P4KE47C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE47C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE47C?
P4KE47C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE47C 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 P4KE47C?
For technical support, including P4KE47C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE47C requirements.
6.How does Aetrix verify that P4KE47C is sourced from the original manufacturer or authorized distributors?
All P4KE47C 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 P4KE47C meets industry standards.
7.What is the process for return or replacement of P4KE47C?
All P4KE47C units undergo pre-shipment inspection (PSI). If there is an issue with P4KE47C, 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 P4KE47C part is unused and in its original packaging.
Return procedure for P4KE47C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE47C Tags
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