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Taiwan Semiconductor Corporation P6KE56CAH
- Part No.:
- P6KE56CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE56CAH.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,411
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Product details
Overview
P6KE56CAH from Taiwan Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for high-energy surge protection in automotive and industrial power rails. It features a 56V nominal breakdown voltage, 600W peak pulse power rating at 10/1000μs, clamping voltage of 80.5V at 7.8A peak current, and AEC-Q101 qualification for under-hood automotive applications.
For engineers reviewing the P6KE56CAH datasheet, P6KE56CAH pinout, P6KE56CAH application, or P6KE56CAH equivalent, key selection criteria include bidirectional clamping capability, low dynamic impedance, fast response time (<5.0ns), and compliance with IEC 61000-4-2/4-4/4-5 ESD and EFT immunity requirements.
Technical Context
The P6KE56CAH operates as a voltage-clamped shunt protector, activating when reverse (or forward, in bidirectional mode) voltage exceeds its breakdown threshold (50.4–61.6V). Its silicon avalanche structure delivers sub-5ns response to transients, with clamping limited to 80.5V at 7.8A - critical for safeguarding 48V and 36V automotive ECUs against load dump and ISO 7637-2 pulses.
Designed for DO-204AC (DO-15) axial package mounting, it supports unidirectional or bidirectional configurations via CA suffix; P6KE56CAH is explicitly bidirectional per ordering code and electrical specs, with symmetrical VBR min/max and identical clamping in both polarities.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 50.4V / 61.6V - defines reliable conduction onset range under 1mA test current; ensures consistent clamping across production lot and temperature |
| VWM | 45.4V - maximum continuous reverse operating voltage; sets safe margin below breakdown for 48V system rail operation |
| VC @ IPP | 80.5V @ 7.8A - peak clamped voltage during 10/1000μs surge; determines protected IC's voltage stress ceiling |
| PPK | 600W - non-repetitive surge power handling; enables robust protection against ISO 7637-2 Pulse 5a (load dump) |
| IR @ VWM | <1μA - ultra-low leakage at stand-off voltage; prevents parasitic drain in always-on automotive modules |
| TJ max | +175°C - extended junction temperature rating; supports placement near hot engine compartments without derating |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
Pinout & Package
Package: DO-204AC (DO-15), axial leaded, epoxy-molded case meeting UL 94V-0 flammability rating. Cathode band marking denotes polarity; for bidirectional P6KE56CAH, the band indicates center tap reference - terminals are functionally symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Transient return path (bidirectional) | Provides low-impedance shunt to ground or rail during positive or negative overvoltage events |
| Cathode (Lead 2) | Transient return path (bidirectional) | Electrically identical to Anode in CA configuration; forms symmetrical clamping pair across protected line |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating differential lines without polarity concerns |
| 600W 10/1000μs surge rating | Meets ISO 7637-2 Pulse 5a (load dump) energy requirements for 12V/24V/48V vehicle systems |
| <5.0ns response time | Clamps transients before sensitive logic or analog circuitry sustains damage - faster than most microcontroller I/O protection |
| AEC-Q101 qualification | Validated for automotive under-hood use including thermal shock, humidity bias, and mechanical vibration stress |
| Halogen-free & RoHS compliant | Meets automotive OEM material compliance mandates (IEC 61249-2-21) and end-of-life recycling requirements |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protects BCM CAN transceiver and microcontroller I/O from load dump surges and alternator ripple on 12V supply rail. IC Role / Device Role: Shunt TVS placed between VCC and GND, clamping transients before they reach downstream regulators and logic. Use Value: Limits voltage excursion to ≤80.5V during 600W load dump event, preventing latch-up or gate oxide rupture in 3.3V/5V ICs. | Use Scenario: Shields 24V digital input isolation barrier from field-wiring induced surges (IEC 61000-4-5 Level 3). IC Role / Device Role: Primary front-end surge clamp on dry-contact input channel, upstream of optocoupler or digital isolator. Use Value: Absorbs 1kV/0.5kA surge energy without degradation, maintaining signal integrity and eliminating need for secondary clamping stages. |
| 48V Mild Hybrid Vehicle DC-DC Converter | LED Streetlight Driver Input Stage |
Use Scenario: Safeguards synchronous buck controller MOSFET gates and bootstrap circuitry from switching-induced transients in 48V battery systems. IC Role / Device Role: Bidirectional TVS across high-side gate driver supply (VBST-VSW) to suppress shoot-through-inducing spikes. Use Value: Symmetrical clamping ensures equal protection during both rising and falling edge transients, preserving PWM timing accuracy. | Use Scenario: Suppresses lightning-induced surges on AC mains input of outdoor LED drivers exposed to open-field installations. IC Role / Device Role: First-line transient suppressor across bridge rectifier output, limiting voltage applied to bulk capacitor and PFC controller. Use Value: Withstands repeated 600W surges while maintaining <1μA leakage - avoids capacitor self-discharge and standby power loss. |
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 | 600W rating, SMB package (surface-mount), lower clamping voltage (83.5V @ 7.2A), same VBR range (52.2–63.8V) | Requires PCB rework for SMT layout; better suited for space-constrained designs with automated assembly | Select SMBJ58CA when board real estate is limited and reflow compatibility is required. |
| 1.5KE56CA | Same DO-15 package and bidirectional function, but 1500W rating (10/1000μs), higher clamping (93.6V @ 16.1A), wider VBR (50.4–61.6V) | Over-specified for 600W use cases; introduces higher clamping voltage and larger physical size | Choose 1.5KE56CA only if legacy design requires 1500W headroom or existing footprint reuse is mandatory. |
Compared with SMBJ58CA and 1.5KE56CA, P6KE56CAH offers optimal balance of AEC-Q101 qualification, axial through-hole manufacturability, and precise 600W/80.5V clamping - making it the preferred choice for new automotive and industrial through-hole surge protection designs.
Availability
P6KE56CAH is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, and 48V mild hybrid power systems requiring stable component supply with full AEC-Q101 traceability.
Supply support for P6KE56CAH 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 automotive-qualified components.
The P6KE series targets cost-sensitive yet reliability-critical surge protection applications, with P6KE56CAH specifically engineered for AEC-Q101-compliant bidirectional clamping in 12V–48V automotive and industrial power domains.
FAQ
What does the 'CA' suffix indicate in P6KE56CAH?
The 'CA' suffix in P6KE56CAH specifies a bidirectional configuration - meaning the device provides symmetrical transient voltage suppression in both forward and reverse directions. This is essential for protecting AC-coupled signals, floating buses, or dual-rail systems where polarity reversal may occur. Unlike unidirectional variants (e.g., P6KE56A), P6KE56CAH has identical breakdown and clamping characteristics across both terminals.
Is P6KE56CAH qualified for automotive applications?
Yes, P6KE56CAH is AEC-Q101 qualified, as confirmed by Taiwan Semiconductor's ordering code documentation ('H' suffix denotes AEC-Q101 qualification for P6KE56CAH). It undergoes rigorous stress testing including temperature cycling, highly accelerated life testing (HALT), and ESD validation - making it suitable for under-hood and chassis-mounted automotive modules operating up to +175°C junction temperature.
What is the maximum clamping voltage of P6KE56CAH and at what current?
The maximum clamping voltage (VC) of P6KE56CAH is 80.5V, measured at a peak pulse current (IPP) of 7.8A under the standard 10/1000μs waveform. This value is guaranteed across the full operating temperature range and represents the upper limit of voltage imposed on protected circuitry during worst-case surge events.
How does P6KE56CAH differ from P6KE56A?
P6KE56CAH is bidirectional and AEC-Q101 qualified, whereas P6KE56A is unidirectional and not AEC-Q101 rated. The 'C' in CA denotes bidirectional functionality (symmetrical VBR and clamping), and the 'H' confirms automotive qualification. Electrically, P6KE56CAH has slightly higher VWM (45.4V vs. 43.6V for P6KE56A) and identical VBR range, but only P6KE56CAH supports dual-polarity surge suppression in automotive environments.
What packaging options are available for P6KE56CAH?
P6KE56CAH is supplied in DO-204AC (DO-15) axial package, available in 3,500-piece tape-and-reel format (standard for automated insertion) and 1,500-piece ammo box packaging (for manual or low-volume assembly). Both options feature pure tin-plated leads compliant with J-STD-002 solderability standards and meet JESD201 Class 2 whisker resistance requirements.
P6KE56CAH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- P6KE
- 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):
- 8.1A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
P6KE56CAH FAQ
1.How can I place an order for P6KE56CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE56CAH 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 P6KE56CAH reliable?
The price and inventory of P6KE56CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE56CAH is usually 5 days.
3.What payment methods are accepted for P6KE56CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE56CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE56CAH?
P6KE56CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE56CAH 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 P6KE56CAH?
For technical support, including P6KE56CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE56CAH requirements.
6.How does Aetrix verify that P6KE56CAH is sourced from the original manufacturer or authorized distributors?
All P6KE56CAH 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 P6KE56CAH meets industry standards.
7.What is the process for return or replacement of P6KE56CAH?
All P6KE56CAH units undergo pre-shipment inspection (PSI). If there is an issue with P6KE56CAH, 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 P6KE56CAH part is unused and in its original packaging.
Return procedure for P6KE56CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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