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Taiwan Semiconductor Corporation P6KE56A
- Part No.:
- P6KE56A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE56A.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:9,236
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Product details
Overview
P6KE56A from Taiwan Semiconductor is a unidirectional 600W transient voltage suppressor (TVS) diode designed for primary-level overvoltage protection in DC power rails and signal lines. It features a 56V nominal breakdown voltage, 47.8V stand-off voltage, 77.0V maximum clamping voltage at 8.1A peak surge current, and low dynamic impedance for effective ESD and lightning-induced transient suppression in automotive and industrial control systems.
For engineers reviewing the P6KE56A datasheet, P6KE56A pinout, P6KE56A application, or P6KE56A equivalent, this device is selected for robust 10/1000μs surge immunity, AEC-Q101 qualification (H-suffix variant), and DO-15 package compatibility with high-reliability board-level protection where fast response (<1.0ps) and sub-1μA leakage above 10V are critical.
Technical Context
The P6KE56A operates as a silicon avalanche diode with unidirectional polarity, triggered when reverse voltage exceeds its 53.2–58.8V breakdown range at 1mA test current. Its clamping action limits transient energy to ≤77.0V at 8.1A, enabling protection of downstream ICs rated for ≤60V operation.
Thermal performance is defined by a 175°C maximum junction temperature and derated pulse power above 25°C ambient per Fig.2. The device meets UL 94V-0 flammability and JESD201 Class 2 whisker resistance standards, supporting long-term reliability in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W at 10/1000μs waveform - sustains single high-energy transients without failure |
| Stand-Off Voltage VWM | 47.8V - maximum continuous reverse voltage before leakage exceeds 1μA |
| Breakdown Voltage VBR | 53.2–58.8V at 1mA - precise avalanche initiation threshold for predictable clamping onset |
| Clamping Voltage VC | 77.0V at 8.1A IPP - limits protected circuit voltage during worst-case surge |
| Junction Temperature | -55°C to +175°C - supports operation in under-hood automotive and industrial enclosures |
| Package | DO-204AC (DO-15) - industry-standard axial leaded package with 0.400g mass and tin-plated leads |
| Response Time | <1.0ps - enables suppression of ultrafast ESD events before IC damage occurs |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, cathode-banded end. Molding compound meets UL 94V-0; terminals are pure tin-plated and solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path / surge return path | Connected to system ground or low-impedance return; carries full surge current during clamping |
| Cathode | Protected line connection / high-side terminal | Connected to line being protected (e.g., 48V rail); reverse-biased during normal operation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (H-suffix) | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock |
| Low dynamic impedance | Enables tighter clamping voltage margin and reduced overshoot during fast transients |
| UL recognition (E-326243) | Confirms compliance with safety standards for end-equipment certification (e.g., IEC 61000-4-5) |
| RoHS & halogen-free | Meets IEC 61249-2-21; suitable for environmentally regulated industrial and consumer applications |
| 175°C max junction temperature | Supports placement near heat sources (e.g., power converters) without thermal derating penalties |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: 12V/24V battery-fed ECUs exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main supply input prior to DC-DC converter. Use Value: Limits transients to ≤77.0V, preventing damage to 60V-rated buck controllers and microcontrollers. |
Use Scenario: 24V digital input modules subject to inductive switching spikes from solenoid drivers. IC Role / Device Role / Timing Role: Front-end TVS on isolated optocoupler input stage. Use Value: Clamps 10/1000μs surges up to 600W while maintaining <1μA leakage at 24V nominal operation. |
| LED Driver Overvoltage Suppression | RS-485 Transceiver Line Protection |
Use Scenario: Constant-current LED strings powered from unregulated 48V supplies in street lighting. IC Role / Device Role / Timing Role: Parallel-connected TVS across driver output to absorb capacitor discharge surges. Use Value: Withstands repeated 600W pulses without degradation, preserving LED lifetime and driver MOSFET integrity. |
Use Scenario: RS-485 nodes in factory automation networks exposed to ground potential differences and EFT bursts. IC Role / Device Role / Timing Role: Bidirectional protection (using P6KE56CA variant) on differential bus lines. Use Value: Sub-1ns response ensures clamping occurs before transceiver input stages experience latch-up or gate oxide rupture. |
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 SMAJ58A | Same DO-214AC package; 58V VBR min/max (55.1–60.9V), 79.0V VC @ 7.6A | Higher clamping voltage (+2.0V) and lower surge current rating (-0.5A) than P6KE56A | Preferred where board space requires surface-mount; verify layout thermal relief for 600W dissipation |
| ON Semiconductor 1.5KE56A | Same DO-201AD package; identical VBR (53.2–58.8V) and VC (77.0V), but 1.5kW rating (1500W) | Higher power handling allows longer surge duration or multiple event tolerance | Select when system-level testing reveals marginal margin with 600W rating; requires larger PCB footprint |
Compared with SMAJ58A and 1.5KE56A, the P6KE56A offers optimal balance of axial-lead manufacturability, AEC-Q101 qualification, and precise 47.8V stand-off for 48V systems-making it ideal for cost-sensitive, high-volume automotive and industrial designs where DO-15 compatibility and UL recognition are mandatory.
Availability
P6KE56A is available at Aetrix Electronics and suitable for automotive ECU protection, industrial PLC input conditioning, and LED driver overvoltage suppression requiring stable component supply across multi-year production cycles.
Supply support for P6KE56A 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 high-reliability TVS portfolio, engineered specifically for AEC-Q101-compliant front-end surge protection in 12V–440V DC systems where UL recognition and tight parametric consistency are required.
FAQ
What is the maximum clamping voltage of the P6KE56A under standard test conditions?
The P6KE56A has a maximum clamping voltage (VC) of 77.0V when subjected to an 8.1A peak pulse current (IPP) with a 10/1000μs waveform at 25°C ambient. This value is measured across the device terminals during transient suppression and defines the upper voltage limit imposed on the protected circuit during surge events.
Is the P6KE56A suitable for automotive applications requiring AEC-Q101 qualification?
Yes, the P6KE56A is available in an AEC-Q101 qualified version denoted by the "H" suffix (e.g., P6KE56AH). While the base P6KE56A part number itself is not automatically qualified, Taiwan Semiconductor's official documentation confirms that H-suffix variants undergo full stress testing per AEC-Q101 Rev D, including temperature cycling, high-temperature operating life, and ESD robustness validation.
How does the P6KE56A differ from the P6KE56 (non-A) variant?
The P6KE56A features tighter breakdown voltage tolerance (53.2–58.8V) compared to the broader P6KE56 range (50.4–61.6V), resulting in more consistent clamping behavior across production lots. It also specifies lower maximum leakage current and improved temperature coefficient (0.103%/°C), enhancing stability in thermally varying environments.
What is the recommended PCB layout practice for the P6KE56A to ensure optimal thermal performance?
For reliable 600W surge handling, mount the P6KE56A with minimum 5 × 5 mm copper pads on each lead, using ≥2 oz copper thickness. Avoid narrow traces between the device and ground/power planes, and ensure no thermal reliefs interrupt heat flow. The DO-15 package relies on lead conduction for heat dissipation, so pad size directly impacts pulse power derating.
Can the P6KE56A be used in bidirectional configurations?
No - the P6KE56A is unidirectional only. For bidirectional protection, select the CA-suffixed variant (e.g., P6KE56CA), which integrates two opposing diodes in series. Using P6KE56A in reverse-biased mode beyond its 47.8V stand-off voltage risks premature breakdown and unreliable clamping on positive-going transients.
P6KE56A 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:
- 1
- Bidirectional Channels:
- -
- 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
P6KE56A FAQ
1.How can I place an order for P6KE56A through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE56A 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 P6KE56A reliable?
The price and inventory of P6KE56A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE56A is usually 5 days.
3.What payment methods are accepted for P6KE56A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE56A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE56A?
P6KE56A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE56A 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 P6KE56A?
For technical support, including P6KE56A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE56A requirements.
6.How does Aetrix verify that P6KE56A is sourced from the original manufacturer or authorized distributors?
All P6KE56A 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 P6KE56A meets industry standards.
7.What is the process for return or replacement of P6KE56A?
All P6KE56A units undergo pre-shipment inspection (PSI). If there is an issue with P6KE56A, 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 P6KE56A part is unused and in its original packaging.
Return procedure for P6KE56A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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