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Taiwan Semiconductor Corporation P6KE43CA
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- Part No.:
- P6KE43CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE43CA.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:3,500
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Product details
Overview
P6KE43CA from Taiwan Semiconductor is a bidirectional 600W transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power rails and signal lines. It features a nominal breakdown voltage of 43 V, clamps transients to ≤61.9 V at 10 A peak pulse current, and delivers fast response (<5 ns) with low dynamic impedance. It is used in automotive body electronics, industrial I/O modules, and AC/DC adapter input stages to protect downstream ICs from EFT and lightning-induced surges.
For engineers reviewing the P6KE43CA datasheet, P6KE43CA pinout, P6KE43CA application, or P6KE43CA equivalent, key selection criteria include its bidirectional configuration, DO-15 package compatibility, 36.8 V standoff voltage, and AEC-Q101 qualification for automotive-grade reliability - all critical for robust overvoltage protection in harsh environments.
Technical Context
The P6KE43CA operates as a silicon avalanche diode with symmetrical bidirectional clamping behavior, enabling protection against both positive and negative polarity transients without external polarity management. Its 10/1000 µs surge rating of 600 W and maximum clamping voltage of 61.9 V at 10 A define its energy-handling capability in real-world surge events.
It exhibits a temperature coefficient of VBR of 0.101 %/°C and maintains stable reverse leakage (<1 µA at 36.8 V), ensuring predictable performance across -55°C to +175°C junction temperatures. The device is optimized for unidirectional/bidirectional applications per JEDEC standards and complies with ANSI/IEEE C62.35 for transient suppression.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600 W - sustains one-time 10/1000 µs surge without failure |
| Standoff Voltage VWM | 36.8 V - maximum continuous DC or RMS voltage before conduction begins |
| Breakdown Voltage VBR | 38.7–47.3 V @ 1 mA - precise avalanche onset range defining clamping threshold |
| Clamping Voltage VC | 61.9 V @ 10 A - peak voltage seen by protected circuit during rated surge |
| Leakage Current ID | <1 µA @ 36.8 V - negligible standby power loss and minimal loading on source |
| Junction Temperature | -55°C to +175°C - supports operation in under-hood automotive and industrial ambient conditions |
| Package | DO-204AC (DO-15) - industry-standard axial leaded package with 0.400 g mass and UL 94V-0 molding |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, bi-directional configuration with cathode band omitted (symmetrical terminals). Leads are pure tin-plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction | No polarity marking required; either terminal serves as anode or cathode depending on transient polarity |
| Lead 1 | Current path input | Connects to line or signal trace requiring protection; no internal distinction from Lead 2 |
| Lead 2 | Current path return | Connects to ground or reference rail; identical electrical function to Lead 1 |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, lighting, and body electronics |
| Fast response time | <5 ns turn-on for bidirectional transients - limits voltage overshoot before clamping engages |
| Low dynamic impedance | Enables tight clamping (61.9 V @ 10 A) despite 600 W surge - reduces stress on protected ICs |
| UL recognition | File #E-326243 - confirms safety compliance for end-equipment certification |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU RoHS Directive - supports green manufacturing and export compliance |
Applications
| Automotive Lighting Systems | Industrial PLC Digital I/O |
|---|---|
Use Scenario: Protecting LED driver ICs and CAN transceivers from load dump and inductive kickback in headlamp and tail lamp modules. IC Role / Device Role: Primary surge clamp on 12 V supply rail and LIN/CAN data lines. Use Value: Withstands 600 W pulses and clamps to 61.9 V, preventing latch-up or gate oxide damage in sensitive drivers. |
Use Scenario: Safeguarding 24 V digital input circuits in programmable logic controllers exposed to relay coil flyback and EFT bursts. IC Role / Device Role: Front-end transient suppressor before optocoupler or Schmitt trigger input stage. Use Value: 36.8 V standoff ensures normal operation during 24 V nominal rail fluctuations while suppressing >1 kV EFT events. |
| AC/DC Adapter Input Stage | Smart Meter Power Supply |
Use Scenario: Secondary-side surge protection on DC output rails of wall adapters subjected to mains-borne transients. IC Role / Device Role: Bidirectional clamp between +VOUT and GND to absorb differential-mode surges. Use Value: Symmetrical DO-15 footprint enables compact layout; 61.9 V clamping prevents overvoltage shutdown of LDOs or DC-DC controllers. |
Use Scenario: Protecting metering SoCs and isolated power supplies from induced surges on utility-side 220 V AC inputs. IC Role / Device Role: MOV-assisted TVS stage in multi-level protection architecture for EN 61000-4-5 compliance. Use Value: 600 W rating complements upstream MOVs; low leakage (<1 µA) avoids meter calibration drift over time. |
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 SMAJ43CA | Same DO-214AC (SMA) package; 600 W rating; VBR = 47.8–52.8 V; higher clamping voltage (69.4 V @ 8.6 A) | Suitable for surface-mount designs where board space is constrained; requires rework of footprint and thermal relief | Select when SMT assembly is mandatory and thermal derating margin allows higher clamping voltage |
| ON Semiconductor 1.5KE43CA | Same DO-204AC (DO-15) package; 1500 W rating; VBR = 40.9–45.2 V; clamping voltage 64.8 V @ 23.2 A | Higher surge capacity suits infrequent but extreme events (e.g., lightning coupling); larger surge current handling demands heavier trace routing | Select when system-level testing requires >1000 W surge immunity and PCB layout accommodates higher IPP |
Compared with P6KE43CA, SMAJ43CA trades axial-leaded reliability and ease of through-hole rework for SMT density, while 1.5KE43CA offers greater single-pulse energy absorption at the cost of increased clamping voltage and physical size - making P6KE43CA optimal for cost-sensitive, AEC-Q101-compliant 600 W protection in legacy or mixed-technology boards.
Availability
P6KE43CA is available at Aetrix Electronics and suitable for automotive lighting systems, industrial PLC I/O protection, and AC/DC adapter input stages requiring stable component supply, long-term lifecycle support, and AEC-Q101 assurance.
Supply support for P6KE43CA 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, MOSFETs, and power management devices since 1979.
The P6KE series was developed to deliver high-reliability, AEC-Q101-qualified transient suppression for automotive and industrial applications where DO-15 form factor, 600 W surge rating, and tight VBR tolerance are essential design requirements.
FAQ
What is the standoff voltage (VWM) of the P6KE43CA?
The P6KE43CA has a maximum standoff voltage (VWM) of 36.8 V, meaning it remains non-conductive up to this DC or RMS voltage level. This value ensures compatibility with 24 V and 36 V industrial systems and 12 V automotive rails with margin, while reliably triggering only during overvoltage events exceeding its breakdown range of 38.7–47.3 V.
Is the P6KE43CA bidirectional or unidirectional?
The P6KE43CA is a bidirectional TVS diode, indicated by the "CA" suffix per TSC's naming convention. It provides symmetrical clamping for both positive and negative transients without polarity sensitivity - confirmed by identical VBR min/max values in both directions and absence of cathode band marking in the DO-15 package.
Does the P6KE43CA meet AEC-Q101 qualification?
Yes, the P6KE43CA is AEC-Q101 qualified, as explicitly stated in the "FEATURES" section of the official TSC datasheet (Version P2203). This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD, confirming suitability for automotive under-hood and cabin applications.
What is the clamping voltage of the P6KE43CA at its rated surge current?
The P6KE43CA clamps to a maximum of 61.9 V at 10 A peak pulse current (IPP), measured using the standard 10/1000 µs waveform. This clamping voltage defines the upper voltage limit imposed on protected circuitry during a full-rated surge event and is critical for ensuring downstream ICs remain within their absolute maximum ratings.
Can the P6KE43CA be used in place of the P6KE43A?
No - P6KE43CA and P6KE43A are not interchangeable. P6KE43A is unidirectional (cathode-banded, "A" suffix), while P6KE43CA is bidirectional ("CA" suffix). Substituting one for the other risks incorrect polarity connection or incomplete protection against negative transients. Their VBR ranges also differ slightly: P6KE43A is 40.9–45.2 V vs. P6KE43CA's 38.7–47.3 V.
P6KE43CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 36.8V
- Voltage - Breakdown (Min):
- 40.9V
- Voltage - Clamping (Max) @ Ipp:
- 59.3V
- Current - Peak Pulse (10/1000µs):
- 10.1A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-15
P6KE43CA FAQ
1.How can I place an order for P6KE43CA through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE43CA 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 P6KE43CA reliable?
The price and inventory of P6KE43CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE43CA is usually 5 days.
3.What payment methods are accepted for P6KE43CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE43CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE43CA?
P6KE43CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE43CA 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 P6KE43CA?
For technical support, including P6KE43CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE43CA requirements.
6.How does Aetrix verify that P6KE43CA is sourced from the original manufacturer or authorized distributors?
All P6KE43CA 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 P6KE43CA meets industry standards.
7.What is the process for return or replacement of P6KE43CA?
All P6KE43CA units undergo pre-shipment inspection (PSI). If there is an issue with P6KE43CA, 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 P6KE43CA part is unused and in its original packaging.
Return procedure for P6KE43CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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