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Taiwan Semiconductor Corporation P4KE27CA
- Part No.:
- P4KE27CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE27CA.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:9,366
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Product details
Overview
P4KE27CA from Taiwan Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in DC power rails and signal lines. It features a 27 V nominal standoff voltage, 39.1 V maximum clamping voltage at 10.7 A peak pulse current, 400 W peak pulse power rating (10/1000 μs), and DO-204AL (DO-41) axial package - deployed in automotive lighting control modules, industrial sensor interfaces, and ESD-sensitive communication ports.
For engineers reviewing the P4KE27CA datasheet, P4KE27CA pinout, P4KE27CA application, or P4KE27CA equivalent, key selection criteria include bidirectional clamping symmetry, low leakage (<1 μA at 21.8 V), fast response (<5 ns), AEC-Q101 qualification, and compatibility with 10/1000 μs surge waveforms per IEC 61000-4-5.
Technical Context
The P4KE27CA operates as a silicon avalanche diode with symmetrical breakdown characteristics in both polarities, enabling bidirectional transient suppression without polarity dependency. Its clamping action begins at a minimum breakdown voltage of 24.3 V and stabilizes up to 29.7 V at 1 mA test current, with temperature coefficient of +0.096 %/°C ensuring predictable drift across –55 °C to +175 °C junction range.
It delivers 400 W peak pulse power handling under standardized 10/1000 μs waveform conditions, sustaining up to 10.7 A peak pulse current while limiting voltage to ≤39.1 V - critical for protecting downstream logic ICs, microcontrollers, and analog front-ends against EFT, lightning-induced surges, and inductive switching transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Voltage | 27 V - defines rated working stand-off voltage before clamping onset; matches common 24 V system rails. |
| Breakdown Voltage (VBR) | 24.3–29.7 V @ 1 mA - ensures reliable conduction onset within tight tolerance; guarantees consistent clamping threshold across production lots. |
| Clamping Voltage (VC) | 39.1 V @ 10.7 A - limits transient voltage seen by protected circuitry; stays well below typical 40 V absolute max ratings of 3.3 V/5 V logic ICs. |
| Peak Pulse Power | 400 W (10/1000 μs) - meets IEC 61000-4-5 Level 3 surge immunity requirements for industrial and automotive applications. |
| Leakage Current | <1 μA @ 21.8 V - minimizes standby power loss and avoids false triggering in high-impedance sensing circuits. |
| Response Time | <5 ns - enables effective suppression of fast-rising ESD and EFT events before damage occurs to sensitive CMOS inputs. |
| Junction Temperature | –55 °C to +175 °C - supports operation in under-hood automotive environments and industrial enclosures without derating. |
Pinout & Package
Package: DO-204AL (DO-41), axial-leaded, glass-passivated, RoHS-compliant, halogen-free molding compound meeting UL 94V-0. Cathode band marking denotes polarity for unidirectional variants; P4KE27CA is bidirectional and marked with part-specific code only (no cathode band).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction | No functional polarity - either lead serves as input/output terminal; enables placement flexibility on PCB without orientation constraints. |
| Lead 1 / Lead 2 | Current-carrying terminals | Tin-plated copper leads compliant with J-STD-002 solderability; support manual and reflow assembly; 0.300 g unit weight aids thermal mass management. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for engine control units and body electronics. |
| 400 W surge capability | Withstands repeated 10/1000 μs transients up to 400 W without degradation - exceeds ISO 7637-2 Pulse 1/2/3a/3b immunity thresholds. |
| Low clamping ratio | VC/VBR ≈ 1.45 - tight voltage margin between breakdown and clamping ensures minimal overvoltage stress on protected ICs. |
| Ultra-low leakage | <1 μA at 21.8 V - prevents loading of high-impedance voltage dividers and precision reference circuits in sensor signal chains. |
| Fast response time | <5 ns turn-on - intercepts sub-microsecond ESD events (IEC 61000-4-2) before propagation into system logic. |
Applications
| Automotive Lighting Control | Industrial Sensor Interface |
|---|---|
|
Use Scenario: Protecting LED driver ICs and CAN transceivers from load-dump spikes and alternator ripple in headlamp modules. IC Role / Device Role / Timing Role: Bidirectional TVS placed across power rail (VBAT/GND) and data lines (CAN_H/CAN_L) to clamp transients before they reach IC pins. Use Value: Maintains <39.1 V clamping during 10.7 A surges - preventing latch-up or gate oxide rupture in 36 V-rated automotive ICs. |
Use Scenario: Shielding 4–20 mA current-loop transmitters and RTD signal conditioners from EFT bursts in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: TVS connected between signal line and ground to shunt fast transients while preserving millivolt-level analog integrity. Use Value: Sub-5 ns response and <1 μA leakage ensure no offset error or noise injection into precision analog front-ends. |
| Consumer USB Port Protection | Power Supply Input Stage |
|
Use Scenario: Guarding USB 2.0 data lines (D+/D−) and VBUS against ESD events in portable medical monitors and point-of-sale terminals. IC Role / Device Role / Timing Role: Bidirectional TVS placed differentially across D+/D− and common-mode across VBUS/GND to suppress contact and air-gap discharges. Use Value: Symmetrical clamping ensures equal protection regardless of discharge polarity - critical for differential signaling integrity. |
Use Scenario: Safeguarding AC-DC adapter primary-side controllers and secondary-side synchronous rectifiers from surge coupling via mains input. IC Role / Device Role / Timing Role: TVS installed across bulk capacitor terminals to absorb line-to-line and line-to-ground surges before reaching regulation circuitry. Use Value: 400 W rating handles 1.2/50 μs surges up to ±2 kV (line-earth) per IEC 61000-4-5, reducing need for multi-stage protection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ26CA (Bourns) | 600 W rating, SMB surface-mount package, lower clamping voltage (38.9 V), higher IPPM (15.4 A) | Requires PCB redesign for SMT layout; better suited for space-constrained consumer electronics vs. through-hole industrial designs | Select when board area is limited and higher surge margin is needed; verify thermal pad design for SMB footprint. |
| 1.5KE27CA (ON Semiconductor) | Identical 27 V nominal, 400 W rating, DO-204AL package, but non-AEC-Q101; slightly higher VC (40.5 V) and leakage (5 μA) | Acceptable for commercial/industrial use where automotive qualification is not mandated | Choose for cost-sensitive non-automotive applications; confirm system-level ESD/EFT compliance without AEC-Q101 validation. |
Compared with SMBJ26CA and 1.5KE27CA, the P4KE27CA uniquely combines AEC-Q101 qualification, DO-41 through-hole compatibility, and tight 24.3–29.7 V VBR tolerance - making it optimal for legacy automotive harnesses and repair-friendly industrial field replacements.
Availability
P4KE27CA is available at Aetrix Electronics and suitable for automotive lighting systems, industrial sensor nodes, USB peripheral protection, and AC-DC power supply input stages requiring stable component supply across extended product lifecycles.
Supply support for P4KE27CA 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, rectifiers, and MOSFETs - headquartered in Hsinchu, Taiwan, with global distribution and AEC-Q101 certification capabilities.
The P4KE series was engineered specifically for high-reliability transient suppression in harsh environments, targeting automotive, industrial, and telecom infrastructure where robustness, consistency, and long-term availability are mandatory.
FAQ
What is the clamping voltage of the P4KE27CA at its rated peak pulse current?
The P4KE27CA has a maximum clamping voltage (VC) of 39.1 V at 10.7 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and ensures protected ICs remain within safe voltage margins during surge events. The P4KE27CA's clamping performance is verified per ANSI/IEEE C62.35 standards.
Is the P4KE27CA suitable for automotive applications?
Yes, the P4KE27CA is AEC-Q101 qualified - certified for automotive-grade reliability including high-temperature reverse bias, temperature cycling, and ESD robustness. Its –55 °C to +175 °C operating junction range and DO-41 mechanical stability make it appropriate for under-hood and body-control module deployments. The P4KE27CA meets stringent automotive surge immunity requirements such as ISO 7637-2.
How does the bidirectional configuration of the P4KE27CA affect circuit design?
The P4KE27CA's bidirectional architecture eliminates polarity sensitivity - either lead can connect to any node in a differential or common-mode path without risk of reverse-bias failure. This simplifies layout in USB, CAN, RS-485, and AC-coupled signal lines, and removes orientation checks during manual assembly. The P4KE27CA achieves symmetrical VBR (24.3–29.7 V) in both directions, ensuring balanced protection.
What is the maximum steady-state power dissipation of the P4KE27CA?
The P4KE27CA has a steady-state power dissipation (PD) of 1 W at lead temperature (TL) = 75 °C, measured with 9.5 mm lead lengths mounted on 5 × 5 mm copper pads. This rating applies only to continuous DC or low-frequency conditions - transient suppression relies on its 400 W peak pulse capability, not steady-state limits. Derating is required above 25 °C ambient per Figure 2 in the P4KE27CA datasheet.
Does the P4KE27CA require a heatsink for standard surge protection use?
No, the P4KE27CA does not require an external heatsink for single-event transient suppression, as its 400 W rating is defined for non-repetitive pulses (tp < 50 ms). Thermal management is only relevant for repetitive surges or elevated ambient temperatures - in those cases, PCB copper pour and lead length become primary heat paths. The P4KE27CA's 0.300 g mass and DO-41 package provide sufficient thermal inertia for typical 1–5 pulse-per-minute duty cycles.
P4KE27CA 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):
- 23.1V
- Voltage - Breakdown (Min):
- 25.7V
- Voltage - Clamping (Max) @ Ipp:
- 37.5V
- Current - Peak Pulse (10/1000µs):
- 11A
- 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)
P4KE27CA FAQ
1.How can I place an order for P4KE27CA through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE27CA 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 P4KE27CA reliable?
The price and inventory of P4KE27CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE27CA is usually 5 days.
3.What payment methods are accepted for P4KE27CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE27CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE27CA?
P4KE27CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE27CA 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 P4KE27CA?
For technical support, including P4KE27CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE27CA requirements.
6.How does Aetrix verify that P4KE27CA is sourced from the original manufacturer or authorized distributors?
All P4KE27CA 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 P4KE27CA meets industry standards.
7.What is the process for return or replacement of P4KE27CA?
All P4KE27CA units undergo pre-shipment inspection (PSI). If there is an issue with P4KE27CA, 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 P4KE27CA part is unused and in its original packaging.
Return procedure for P4KE27CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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