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Taiwan Semiconductor Corporation P6KE56CA
- Part No.:
- P6KE56CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE56CA.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:3,500
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Product details
Overview
P6KE56CA 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 56 V, clamps transients to ≤80.5 V at 7.8 A peak surge current, and delivers fast response (<5 ns) with low dynamic impedance. Used in automotive body electronics, industrial I/O modules, and AC/DC adapter input stages.
For engineers reviewing the P6KE56CA datasheet, P6KE56CA pinout, P6KE56CA application, or P6KE56CA equivalent, key selection criteria include bidirectional clamping capability, DO-15 package compatibility, AEC-Q101 qualification status, junction temperature rating up to +175°C, and compliance with IEC 61000-4-2/4-4/4-5 ESD/EFT/surge immunity standards.
Technical Context
The P6KE56CA operates as a silicon avalanche diode configured in bidirectional (symmetrical) mode, 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 80.5 V at 7.8 A define its energy-handling envelope under standardized lightning-surge conditions.
With a standoff voltage (VWM) of 47.8 V and breakdown voltage range of 53.2–58.8 V at 1 mA test current, it maintains low leakage (<1 µA) above 10 V while ensuring reliable turn-on before downstream IC damage thresholds. The device's temperature coefficient of VBR (0.103 %/°C) supports stable operation across –55°C to +175°C ambient ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600 W at 10/1000 µs waveform - sustains single high-energy surges typical of ISO 7637-2 Load Dump or IEC 61000-4-5 Level 4 events |
| Standoff Voltage (VWM) | 47.8 V - maximum continuous DC or RMS operating voltage before significant leakage begins |
| Breakdown Voltage (VBR) | 53.2–58.8 V at 1 mA - guaranteed conduction onset window defining protection threshold margin |
| Clamping Voltage (VC) | 80.5 V at 7.8 A IPP - peak voltage seen by protected circuit during worst-case surge, critical for IC survival |
| Junction Temperature (TJ) | –55°C to +175°C - enables deployment in under-hood automotive, industrial motor drives, and high-ambient environments |
| Package | DO-204AC (DO-15) - industry-standard axial leaded package with 0.400 g mass, UL 94V-0 molding, and J-STD-002 solderability |
| AEC-Q101 Qualified | Yes (H-suffix variant confirmed) - validated for automotive electronic systems per stress test requirements including HTSL, TC, and UHAST |
Pinout & Package
DO-204AC (DO-15) axial-leaded package with cathode band marking for unidirectional variants; P6KE56CA is bidirectional and marked without polarity band. Leads are pure tin-plated, compliant with RoHS and halogen-free (IEC 61249-2-21).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (reversible) | Bidirectional avalanche junction | No fixed anode/cathode - terminals function identically in either direction for symmetrical clamping |
| Lead 1 | Connection to PCB trace or wire | Standard tinned copper lead; requires 0.375" (9.5 mm) lead length for rated 5 W steady-state dissipation |
| Lead 2 | Connection to PCB trace or wire | Electrically identical to Lead 1; no internal distinction - interchangeable in layout |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity awareness |
| 600 W 10/1000 µs surge rating | Meets IEC 61000-4-5 Level 4 (4 kV line-to-earth) with margin for repeated exposure in industrial mains interfaces |
| Clamping voltage ≤80.5 V | Ensures protected 56 V-rated circuits (e.g., telecom power supplies) remain below absolute maximum ratings during surge |
| AEC-Q101 qualified (H-suffix) | Validated for automotive use including engine control units, lighting modules, and infotainment power inputs |
| Low leakage & high temp stability | <1 µA @ 47.8 V and 0.103 %/°C VBR drift enable reliable long-term operation in sealed enclosures up to +125°C ambient |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
|
Use Scenario: Protecting 12 V CAN bus power rail and microcontroller I/O pins from load dump and jump-start transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on VCC supply path, absorbing >400 V spikes within nanoseconds. Use Value: Prevents latch-up or gate oxide rupture in MCU and CAN transceiver ICs during vehicle battery disconnection/reconnection events. |
Use Scenario: Shielding 24 V digital input optocoupler front-end from field-wiring induced surges and EFT bursts. IC Role / Device Role / Timing Role: First-line transient suppressor ahead of series current-limiting resistor and opto-LED. Use Value: Maintains input logic integrity during 4 kV contact ESD (IEC 61000-4-2) and 2 kV electrical fast transients (IEC 61000-4-4). |
| AC/DC Adapter Input Stage | LED Streetlight Driver Power Input |
|
Use Scenario: Safeguarding bridge rectifier and primary-side controller ICs against AC line surges and switching noise. IC Role / Device Role / Timing Role: Parallel-connected TVS across bulk capacitor input, triggered only during overvoltage excursions. Use Value: Limits peak voltage to <81 V, preventing overvoltage shutdown or failure of 100 V-rated MOSFETs and controllers. |
Use Scenario: Protecting constant-current LED driver ICs from induced surges on outdoor-rated 230 VAC input wiring. IC Role / Device Role / Timing Role: Bidirectional clamping element across input filter capacitors, handling both differential and common-mode transients. Use Value: Survives repeated 6 kV line-to-earth surges (IEC 61000-4-5) without degradation, extending driver MTBF in harsh outdoor environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ58CA (Bourns) | Same DO-214AA package; 600 W rating; VBR = 64.4–71.4 V; VC = 93.6 V @ 6.4 A - higher clamping voltage, lower surge current | Less suitable for 56 V systems where margin to IC abs-max is tight; better for 60–72 V rails | Select when footprint must match SMB surface-mount layout and system VCC tolerance allows ≥93 V clamping |
| 1.5KE56CA (ON Semiconductor) | Same DO-204AC package; 1500 W rating; VBR = 53.2–58.8 V; VC = 87.1 V @ 17.2 A - higher power, higher clamping, larger thermal mass | Overqualified for most 600 W needs; may require derating in confined spaces due to higher PPK | Select when legacy 1.5KE footprint is locked and surge threat level exceeds 600 W, e.g., utility meter mains interface |
Compared with SMBJ58CA and 1.5KE56CA, the P6KE56CA offers optimal balance of clamping precision (80.5 V), compact DO-15 form factor, and AEC-Q101 qualification - making it preferred for space-constrained automotive and industrial designs requiring strict voltage margin control.
Availability
P6KE56CA is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input protection, and LED driver power stage applications requiring stable component supply, consistent AEC-Q101 qualification, and DO-15 through-hole compatibility.
Supply support for P6KE56CA 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 automotive, industrial, and consumer markets since 1979.
The P6KE Series belongs to TSC's AEC-Q101-qualified TVS portfolio, engineered specifically for high-reliability transient suppression in automotive power distribution, industrial control I/O, and lighting driver subsystems.
FAQ
What is the clamping voltage of the P6KE56CA and why does it matter?
The P6KE56CA has a maximum clamping voltage (VC) of 80.5 V at 7.8 A peak pulse current (10/1000 µs). This value represents the highest voltage imposed on the protected circuit during a surge event. For a 56 V nominal system, keeping VC below 81 V ensures downstream components-such as 100 V-rated MOSFETs or microcontrollers with 60 V absolute maximum ratings-remain within safe operating limits. Exceeding this clamping voltage risks permanent damage, making VC a critical parameter in TVS selection. The P6KE56CA's tightly controlled VC directly supports robust design margins in automotive and industrial applications.
Is the P6KE56CA bidirectional, and how is that indicated in the part number?
Yes, the P6KE56CA is a bidirectional TVS diode. The "CA" suffix explicitly denotes bidirectional configuration - "C" indicates the series (P6KE), and "A" signifies bidirectional symmetry. Unlike unidirectional variants (e.g., P6KE56C), the P6KE56CA provides identical clamping behavior for both positive- and negative-polarity transients without requiring orientation during PCB assembly. This simplifies layout, eliminates polarity-check steps in manufacturing, and makes it ideal for protecting AC-coupled signals, floating buses, or dual-rail power domains where voltage polarity reversal is possible.
Does the P6KE56CA meet automotive qualification standards?
Yes, the P6KE56CA is AEC-Q101 qualified when ordered with the "H" suffix (e.g., P6KE56CAH), as confirmed in Taiwan Semiconductor's ordering information and qualification reports. AEC-Q101 validation covers stress tests including high-temperature operating life (HTOL), temperature cycling (TC), unbiased highly accelerated stress test (UHAST), and mechanical shock - all required for automotive under-hood and cabin electronics. While the base P6KE56CA part may be used in non-automotive contexts, only the H-suffix variant carries formal AEC-Q101 certification documentation and is recommended for automotive BCM, lighting, or ADAS power rail protection.
What is the standoff voltage (VWM) of the P6KE56CA, and how does it relate to system operating voltage?
The P6KE56CA has a maximum standoff voltage (VWM) of 47.8 V, meaning it remains in high-impedance state with <1 µA leakage up to this DC or RMS voltage. This value must exceed the system's maximum normal operating voltage - for example, a 42 V automotive battery system (12 V nominal × 3.5x load dump margin) or a 48 V industrial DC bus. Selecting a TVS with VWM too close to operating voltage causes excessive leakage and thermal stress; the 47.8 V VWM of the P6KE56CA provides ~10% headroom above 42 V systems while maintaining rapid response during overvoltage events. It is not intended for continuous operation above VWM.
Can the P6KE56CA replace the P6KE56A in a design?
No, the P6KE56CA cannot directly replace the P6KE56A because they differ fundamentally in configuration: P6KE56A is unidirectional (anode-cathode asymmetry), while P6KE56CA is bidirectional (symmetrical clamping). Substituting one for the other without layout review risks incorrect polarity placement, incomplete protection against negative transients, or unintended forward conduction. If a design currently uses P6KE56A and requires bidirectional protection, the PCB must be verified for symmetric mounting and absence of polarity-dependent components. Always consult the full datasheet and validate with surge testing before interchange - the P6KE56CA is a functional alternative only when bidirectionality is explicitly required and supported by system architecture.
P6KE56CA 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):
- 47.8V
- Voltage - Breakdown (Min):
- 53.2V
- Voltage - Clamping (Max) @ Ipp:
- 77V
- Current - Peak Pulse (10/1000µs):
- 7.8A
- 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
P6KE56CA FAQ
1.How can I place an order for P6KE56CA through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE56CA 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 P6KE56CA reliable?
The price and inventory of P6KE56CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE56CA is usually 5 days.
3.What payment methods are accepted for P6KE56CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE56CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE56CA?
P6KE56CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE56CA 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 P6KE56CA?
For technical support, including P6KE56CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE56CA requirements.
6.How does Aetrix verify that P6KE56CA is sourced from the original manufacturer or authorized distributors?
All P6KE56CA 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 P6KE56CA meets industry standards.
7.What is the process for return or replacement of P6KE56CA?
All P6KE56CA units undergo pre-shipment inspection (PSI). If there is an issue with P6KE56CA, 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 P6KE56CA part is unused and in its original packaging.
Return procedure for P6KE56CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE56CA Tags
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