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Taiwan Semiconductor Corporation P6KE51CA A0G
- Part No.:
- P6KE51CA A0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE51CA A0G.pdf
- Description:
- TVS DIODE 43.6VWM 70.1VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,892
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Product details
Overview
P6KE51CA A0G from Taiwan Semiconductor is a bidirectional 600W transient voltage suppressor (TVS) diode designed for robust overvoltage protection in DC power rails and signal lines. It features a nominal breakdown voltage of 51 V, clamps transients to ≤73.5 V at 8.5 A peak surge current, and delivers sub-nanosecond response time (<1.0 ps for unidirectional, 5.0 ns for bidirectional), making it suitable for automotive ECU power input protection and industrial I/O interface surge suppression.
For engineers reviewing the P6KE51CA A0G datasheet, P6KE51CA A0G pinout, P6KE51CA A0G application, or P6KE51CA A0G equivalent, key selection criteria include its DO-204AC (DO-15) package compatibility, bidirectional clamping symmetry, 175°C maximum junction temperature, and AEC-Q101 qualification status - critical for automotive-grade reliability validation and board-level ESD/EFT immunity design.
Technical Context
The P6KE51CA A0G implements a silicon avalanche diode structure optimized for fast transient response and low dynamic impedance. Its bidirectional configuration enables symmetrical clamping across both polarities without external circuitry, supporting protection of AC-coupled or floating interfaces such as CAN bus stubs and sensor differential pairs.
It operates within a -55°C to +175°C junction temperature range and maintains stable VBR (45.9–56.1 V) with a temperature coefficient of 0.102%/°C. The device sustains 600 W non-repetitive peak pulse power under the standardized 10/1000 µs waveform, with derating above 25°C per published thermal curves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 45.9 V / 56.1 V - Ensures reliable avalanche conduction onset across manufacturing tolerance and temperature variation |
| VWM | 41.3 V - Maximum continuous reverse working voltage before leakage exceeds 1 µA; defines safe operating margin below clamping |
| VC @ IPP | 73.5 V @ 8.5 A - Peak clamped voltage during 10/1000 µs surge; determines protected circuit's maximum stress level |
| IPP (max) | 8.5 A - Maximum non-repetitive surge current the device can safely divert without degradation |
| PPK | 600 W - Peak pulse power rating under standard 10/1000 µs waveform; defines transient energy handling capacity |
| TJ(max) | +175 °C - Enables operation in under-hood automotive environments and high-temperature industrial enclosures |
| Package | DO-204AC (DO-15) - Industry-standard axial leaded package with 0.400 g mass and UL 94V-0 molding compound |
Pinout & Package
DO-204AC (DO-15) axial-leaded package with cathode band marking for polarity identification. Bidirectional configuration means both terminals are functionally symmetric; no dedicated anode/cathode assignment required in circuit layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient current path terminal | Either lead serves as input/output for bidirectional surge current; no directional biasing needed in PCB layout |
| Cathode band (marking) | Polarity indicator | Visible band denotes terminal orientation for unidirectional variants; irrelevant for P6KE51CA A0G due to bidirectional symmetry |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals or floating buses (e.g., RS-485, CAN) without polarity concerns |
| 600 W surge rating (10/1000 µs) | Meets IEC 61000-4-5 Level 4 (4 kV line-to-line) requirements for industrial and automotive power inputs |
| Fast response time (5.0 ns) | Clamps transients before downstream ICs experience damaging overvoltage - critical for protecting microcontrollers and transceivers |
| AEC-Q101 qualified | Validated for automotive applications including engine control modules, body electronics, and ADAS sensor interfaces |
| Low dynamic impedance | Minimizes voltage overshoot during surge events by maintaining tight VC–IPP relationship across operating range |
Applications
| Automotive Power Input Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V power supply inputs of engine control units (ECUs) against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed directly at connector entry point to shunt surge energy before reaching LDOs and MCU power domains. Use Value: Limits transient voltage to ≤73.5 V, preventing damage to 40 V-rated input capacitors and 36 V max-input PMICs commonly used in automotive subsystems. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to PLC analog input modules exposed to field wiring surges. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential sensor pair (e.g., 4–20 mA loop or RTD bridge) to suppress common-mode transients. Use Value: Maintains signal integrity by clamping ±73.5 V spikes while adding <1 pF junction capacitance - negligible impact on <10 kHz sensor bandwidth. |
| RS-485 Transceiver Protection | Smart Meter Communication Port Protection |
Use Scenario: Shielding half-duplex RS-485 transceivers (e.g., MAX13487, SN65HVD72) in building automation nodes from cable-induced EFT and lightning-induced surges. IC Role / Device Role / Timing Role: Placed on A/B bus lines ahead of transceiver ESD diodes to absorb bulk surge energy before internal protection fails. Use Value: Withstands 8.5 A peak current at 73.5 V clamp, enabling compliance with IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) up to 2 kV line-earth. | Use Scenario: Securing HPLC (High-Speed Power Line Communication) and RF (NB-IoT/LTE-M) communication ports in electricity meters installed in outdoor substations. IC Role / Device Role / Timing Role: First-stage protector on AC/DC auxiliary power input and communication line terminations to prevent meter reset or flash corruption during grid switching events. Use Value: 175°C TJ(max) ensures long-term reliability in sealed, thermally constrained meter housings where ambient reaches 85°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ51CA | Same 51 V bidirectional rating, but SMB package (surface-mount); lower 600 W rating derated faster above 25°C | Preferred for automated SMT assembly; unsuitable for through-hole legacy designs or high-vibration mechanical retention | Select SMBJ51CA only when board space constraints mandate SMT and thermal management supports SMB footprint |
| 1.5KE51CA | Same DO-15 package and 51 V rating, but 1500 W peak power; larger die size increases junction capacitance (~100 pF vs. ~50 pF) | Better for high-energy surges (e.g., direct lightning coupling), but higher CJ limits use in >1 MHz data lines | Choose 1.5KE51CA when surge energy exceeds 600 W capability and signal bandwidth permits higher capacitance |
Compared with SMBJ51CA and 1.5KE51CA, the P6KE51CA A0G offers optimal balance of through-hole mechanical robustness, moderate surge capacity, and low junction capacitance - ideal for cost-sensitive automotive and industrial designs requiring AEC-Q101 validation without SMT rework or oversized packaging.
Availability
P6KE51CA A0G is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLC analog inputs, RS-485 communication nodes, and smart meter auxiliary power circuits requiring stable component supply with AEC-Q101 assurance and DO-15 through-hole compatibility.
Supply support for P6KE51CA A0G 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 Taiwanese semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for automotive, industrial, and consumer markets.
The P6KE series was developed to deliver AEC-Q101-qualified, high-reliability transient suppression in standard DO-15 packaging - targeting cost-effective, drop-in replacement for legacy TVS solutions in automotive power distribution and industrial interface protection.
FAQ
What does the 'CA' suffix indicate in P6KE51CA A0G?
The 'CA' suffix in P6KE51CA A0G denotes a bidirectional configuration, meaning the device provides symmetrical clamping for both positive and negative transients without polarity sensitivity. This differs from 'A' suffix parts (e.g., P6KE51A), which are unidirectional. The P6KE51CA A0G is therefore suitable for AC-coupled or floating signal lines like RS-485 or CAN bus stubs where voltage polarity reverses.
Is P6KE51CA A0G AEC-Q101 qualified?
Yes, P6KE51CA A0G is AEC-Q101 qualified, as confirmed in the official Taiwan Semiconductor P6KE series datasheet (Version P2203). This qualification validates its reliability for automotive applications including engine control, body electronics, and ADAS sensor interfaces under temperature cycling, humidity, and mechanical stress testing per AEC standards.
What is the maximum clamping voltage of P6KE51CA A0G at rated surge current?
The maximum clamping voltage (VC) of P6KE51CA A0G is 73.5 V at 8.5 A peak pulse current (IPP) under the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during a standardized surge event - critical for ensuring downstream components remain within their absolute maximum ratings.
Can P6KE51CA A0G replace P6KE51A in a design?
No, P6KE51CA A0G cannot directly replace P6KE51A because they differ fundamentally in configuration: P6KE51CA A0G is bidirectional, while P6KE51A is unidirectional. Substituting them requires verifying that the circuit does not rely on DC bias polarity - e.g., replacing P6KE51A on a DC power rail may cause unintended conduction. Always validate layout, grounding, and signal topology before interchanging CA and A variants.
What packaging format does P6KE51CA A0G ship in?
P6KE51CA A0G ships in an ammo box format containing 1,500 units, as specified in Taiwan Semiconductor's ordering information. This contrasts with tape-and-reel variants (e.g., P6KE51CA) which ship 3,500 units per reel. The ammo box supports manual or semi-automated insertion for through-hole assembly and is compatible with standard DO-204AC (DO-15) handling equipment.
P6KE51CA A0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- P6KE
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 43.6V
- Voltage - Breakdown (Min):
- 48.5V
- Voltage - Clamping (Max) @ Ipp:
- 70.1V
- Current - Peak Pulse (10/1000µs):
- 8.9A
- Power - Peak Pulse:
- 600W
- 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-204AC (DO-15)
P6KE51CA A0G FAQ
1.How can I place an order for P6KE51CA A0G through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE51CA A0G 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 P6KE51CA A0G reliable?
The price and inventory of P6KE51CA A0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE51CA A0G is usually 5 days.
3.What payment methods are accepted for P6KE51CA A0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE51CA A0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE51CA A0G?
P6KE51CA A0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE51CA A0G 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 P6KE51CA A0G?
For technical support, including P6KE51CA A0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE51CA A0G requirements.
6.How does Aetrix verify that P6KE51CA A0G is sourced from the original manufacturer or authorized distributors?
All P6KE51CA A0G 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 P6KE51CA A0G meets industry standards.
7.What is the process for return or replacement of P6KE51CA A0G?
All P6KE51CA A0G units undergo pre-shipment inspection (PSI). If there is an issue with P6KE51CA A0G, 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 P6KE51CA A0G part is unused and in its original packaging.
Return procedure for P6KE51CA A0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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