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Taiwan Semiconductor Corporation P4KE27C
- Part No.:
- P4KE27C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE27C.pdf
- Description:
- 400W, 27V, BIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,420
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Product details
Overview
P4KE27C from Taiwan Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power rails and signal lines. It features a 27V nominal standoff voltage, 39.1V maximum clamping voltage at 10.7A peak pulse current, and 400W peak pulse power rating per 10/1000μs waveform - deployed in automotive body electronics, industrial I/O modules, and LED driver input stages.
For engineers reviewing the P4KE27C datasheet, P4KE27C pinout, P4KE27C application, or P4KE27C equivalent, key selection criteria include bidirectional clamping capability, low leakage (<1μA at 21.8V), AEC-Q101 qualification option (P4KE27CH), DO-41 package compatibility, and thermal stability up to +175°C junction temperature.
Technical Context
The P4KE27C operates as a silicon avalanche diode with symmetrical bidirectional breakdown behavior - both anodes tied internally to enable equal clamping in positive and negative transients. Its 24.3–29.7V breakdown range at 1mA test current ensures robust overvoltage thresholding across temperature and process variation.
Clamping response is defined by fast avalanche turn-on: sub-nanosecond rise time (<1ps for unidirectional reference, <5ns for bidirectional operation) and low dynamic impedance during surge events. The device sustains 400W non-repetitive pulses without degradation when mounted on standard PCB copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Voltage | 27 V - defines rated working standoff level before avalanche conduction begins |
| Breakdown Voltage (VBR) | 24.3–29.7 V @ 1 mA - verified conduction onset window ensuring reliable trigger margin |
| Working Stand-off Voltage (VWM) | 21.8 V - maximum continuous reverse voltage without significant leakage |
| Maximum Clamping Voltage (VC) | 39.1 V @ 10.7 A - peak voltage seen by protected circuit during full-rated 400W surge |
| Peak Pulse Power (PPK) | 400 W - energy-handling capacity per 10/1000μs waveform, derated above 25°C |
| Junction Temperature Range | −55°C to +175°C - supports under-hood automotive and industrial ambient environments |
| Leakage Current (ID) | <1 μA @ 21.8 V - minimal standby power loss and signal integrity impact |
Pinout & Package
Package: DO-204AL (DO-41) - axial-leaded, glass-passivated, RoHS-compliant plastic case with UL 94V-0 flammability rating and pure tin-plated leads solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 / Cathode Band End | Transient return path (bidirectional) | Marked end serves as common reference; polarity marking applies only to unidirectional variants - P4KE27C has no cathode band and functions identically in both directions |
| Anode 2 / Unmarked End | Transient return path (bidirectional) | Unmarked lead completes symmetrical conduction path; no functional distinction between terminals |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Equal 24.3–29.7V breakdown in both polarities - eliminates need for dual-diode configurations in AC-coupled or floating systems |
| AEC-Q101 qualified variant available | P4KE27CH meets stress testing for automotive electronics - including temperature cycling, HTRB, and ESD per JESD22-A114 |
| Low clamping ratio | VC/VBR = 39.1/24.3 ≈ 1.61 - tight voltage control limits stress on downstream ICs during surge events |
| Fast transient response | <5 ns turn-on time - captures fast-rising EFT and lightning-induced spikes before damage occurs |
| Halogen-free construction | Complies with IEC 61249-2-21 - supports environmental compliance for export and OEM sustainability requirements |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protects microcontroller GPIO and CAN transceiver power rails from load dump and inductive kickback in 12V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional TVS placed across VCC-GND to clamp ±100V transients within 5ns. Use Value: Enables direct integration into compact BCM layouts without external biasing or polarity management - reduces BOM count by one component versus unidirectional solutions. |
Use Scenario: Shields 24V digital input optocoupler front-end from field-wiring surges and EFT bursts in factory automation cabinets. IC Role / Device Role / Timing Role: Standoff voltage of 21.8V allows safe operation under 24V nominal rail with 10% tolerance while clamping >39V transients. Use Value: Maintains <1μA leakage at operating voltage - prevents false triggering of high-impedance input comparators during normal operation. |
| LED Streetlight Driver Input Stage | RS-485 Transceiver Protection |
Use Scenario: Installed across AC-DC converter output to absorb switching transients and lightning-induced surges on outdoor lighting power feeds. IC Role / Device Role / Timing Role: Absorbs 400W 10/1000μs pulses without failure, sustaining repeated exposure in harsh outdoor environments. Use Value: Junction temperature rating of +175°C enables reliable operation inside thermally constrained LED driver enclosures without forced cooling. |
Use Scenario: Placed differential-mode across RS-485 bus lines (A-B) and common-mode across A-GND/B-GND to suppress ESD and EFT. IC Role / Device Role / Timing Role: Symmetrical bidirectional behavior ensures identical clamping on both data line polarities during ±8kV contact ESD events. Use Value: Low capacitance (<100pF typical at 0V) preserves signal integrity up to 10 Mbps without edge distortion or timing jitter. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ28CA | 28V nominal, DO-214AC package, 400W rating, 42.1V clamping at 9.5A | Surface-mount only; requires rework of layout and thermal pad design | Preferred where board space is constrained and SMT assembly is standard |
| ON Semiconductor 1.5KE27C | Same 27V nominal, DO-201AE package, 1500W rating, 43.0V clamping at 35A | Higher power handling but larger footprint and higher leakage (5μA @ 21.8V) | Selected when legacy 1.5KE footprint compatibility is required or multi-pulse surge immunity is critical |
Compared with P4KE27C, SMAJ28CA offers smaller size but lacks AEC-Q101 qualification in standard grade, while 1.5KE27C delivers higher surge capacity at the cost of increased leakage and board area - making P4KE27C optimal for cost-sensitive, through-hole automotive and industrial designs requiring balanced performance and qualification.
Availability
P4KE27C is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input protection, and outdoor LED driver designs requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for P4KE27C 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 power management, protection, and interface devices since 1979.
The P4KE series belongs to TSC's transient voltage suppressor product line, engineered specifically for robust, cost-effective overvoltage protection in automotive, industrial, and lighting applications where reliability under repetitive surge stress is essential.
FAQ
What is the clamping voltage of P4KE27C at its rated peak pulse current?
The P4KE27C exhibits a maximum clamping voltage (VC) of 39.1 V when subjected to its rated peak pulse current of 10.7 A under the standard 10/1000μs waveform. This value is measured per ANSI/IEEE C62.35 and represents the upper limit of voltage imposed on the protected circuit during worst-case surge conditions - critical for verifying downstream IC voltage tolerances.
Is P4KE27C unidirectional or bidirectional, and how is polarity marked?
P4KE27C is a bidirectional TVS diode with symmetrical breakdown characteristics in both polarities; it has no cathode band marking. Unlike unidirectional variants (e.g., P4KE27), the "C" suffix explicitly denotes bidirectional functionality - confirmed by identical VBR min/max values (24.3–29.7 V) and clamping behavior in positive and negative directions per datasheet Table 1.
Does P4KE27C meet AEC-Q101 qualification for automotive use?
The base P4KE27C is not AEC-Q101 qualified; however, the variant P4KE27CH - indicated by the "H" suffix in the ordering code - is fully qualified per AEC-Q101 Rev D. This includes stress tests for temperature cycling, high-temperature reverse bias, and ESD, making P4KE27CH suitable for automotive body electronics and infotainment power rail protection.
What is the maximum steady-state power dissipation for P4KE27C at elevated temperatures?
P4KE27C has a steady-state power dissipation (PD) of 1 W at lead temperature (TL) = 75°C with 9.5 mm lead lengths mounted on 5 × 5 mm copper pads. Derating follows Fig.2 in the datasheet: PD decreases linearly to zero at +175°C junction temperature, supporting operation in high-ambient environments when proper PCB copper area is used for heat spreading.
How does P4KE27C compare to P4KE27A in terms of electrical parameters?
P4KE27A is the tighter-tolerance version of the same 27V family: its breakdown voltage range is 25.7–28.4 V (vs. 24.3–29.7 V for P4KE27C), resulting in lower clamping voltage (37.5 V vs. 39.1 V) and slightly higher working stand-off voltage (23.1 V vs. 21.8 V). Both share identical package, surge rating, and thermal specs - P4KE27A suits designs needing tighter voltage control at the cost of narrower manufacturing yield.
P4KE27C 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):
- 21.8V
- Voltage - Breakdown (Min):
- 24.3V
- Voltage - Clamping (Max) @ Ipp:
- 39.1V
- Current - Peak Pulse (10/1000µs):
- 10.7A
- 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)
P4KE27C FAQ
1.How can I place an order for P4KE27C through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE27C 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 P4KE27C reliable?
The price and inventory of P4KE27C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE27C is usually 5 days.
3.What payment methods are accepted for P4KE27C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE27C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE27C?
P4KE27C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE27C 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 P4KE27C?
For technical support, including P4KE27C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE27C requirements.
6.How does Aetrix verify that P4KE27C is sourced from the original manufacturer or authorized distributors?
All P4KE27C 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 P4KE27C meets industry standards.
7.What is the process for return or replacement of P4KE27C?
All P4KE27C units undergo pre-shipment inspection (PSI). If there is an issue with P4KE27C, 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 P4KE27C part is unused and in its original packaging.
Return procedure for P4KE27C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE27C Tags
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