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Taiwan Semiconductor Corporation P6KE33
- Part No.:
- P6KE33
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE33.pdf
- Description:
- 600W, 33V, UNIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,133
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Product details
Overview
P6KE33 from Taiwan Semiconductor is a unidirectional 600W transient voltage suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a nominal breakdown voltage of 33 V, clamps transients to ≤47.7 V at 13.0 A peak surge current, and delivers low dynamic impedance with <1.0 ps response time from 0 V to VBR. It is widely deployed in automotive body control modules and industrial PLC I/O protection circuits.
For engineers reviewing the P6KE33 datasheet, P6KE33 pinout, P6KE33 application, or P6KE33 equivalent, key selection criteria include its 26.8 V stand-off voltage, 1 μA max reverse leakage at VWM, DO-204AC (DO-15) axial package, AEC-Q101 qualification status, and compatibility with 10/1000 µs surge waveforms per IEC 61000-4-5.
Technical Context
The P6KE33 operates as a silicon avalanche diode optimized for fast clamping of high-energy transients. Its unidirectional configuration provides polarity-sensitive protection with cathode-band marking, and it exhibits a temperature coefficient of VBR of 0.098 %/°C - enabling predictable voltage drift across –55 °C to +175 °C junction temperatures.
It is rated for non-repetitive 600 W peak pulse power under 10/1000 µs waveform, derates linearly above 25 °C ambient, and supports up to 100 A peak forward surge current (8.3 ms half-sine) in unidirectional mode. The device meets UL 94V-0 flammability and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 29.7 V / 36.3 V at 1 mA test current - defines reliable avalanche initiation window for consistent clamping onset |
| VWM | 26.8 V - maximum continuous DC or RMS operating voltage before significant leakage begins |
| ID @ VWM | ≤1 μA - ensures negligible standby power loss and minimal loading on protected circuits |
| VC @ IPP | 47.7 V at 13.0 A - peak clamped voltage during 10/1000 µs surge, defining worst-case stress on downstream ICs |
| PPK | 600 W - peak pulse power handling capability, directly supporting IEC 61000-4-5 Level 4 surge immunity |
| TJMAX | +175 °C - enables operation in under-hood automotive and high-temperature industrial environments |
| Package | DO-204AC (DO-15) - industry-standard axial leaded package with 0.400 g mass and tin-plated leads compliant with J-STD-002 |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, epoxy-molded case with cathode band marking for unidirectional polarity. Leads are pure tin-plated and solderable per J-STD-002; meets UL 94V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current entry point during forward conduction; tied to system ground or low-side reference in clamp-to-rail configurations | Enables standard unidirectional TVS placement between protected line and ground - no series impedance required |
| Cathode (banded end) | Avalanche conduction node during reverse transient; connected to protected line (e.g., 24 V rail or CAN_H) | Defines clamping path: transient energy shunted from line to ground when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| 600 W surge rating (10/1000 µs) | Supports Level 4 surge immunity per IEC 61000-4-5 without external current limiting |
| Clamping voltage ≤47.7 V at 13 A | Protects 33 V-rated components (e.g., LIN transceivers, MCU I/O) from destructive overvoltage |
| Response time <1.0 ps (0 V → VBR) | Engages before most ESD or EFT events fully develop - critical for safeguarding high-speed interfaces |
| AEC-Q101 qualified (P6KE33H variant) | Validated for automotive under-hood use including thermal cycling, humidity, and mechanical shock |
| RoHS & halogen-free (IEC 61249-2-21) | Complies with global environmental regulations and enables use in green manufacturing programs |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
|
Use Scenario: Protects 24 V supply inputs and sensor signal lines in BCMs exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed directly at connector entry point, shunting transients to chassis ground. Use Value: Limits voltage seen by microcontroller power supplies and LIN transceivers to ≤47.7 V, preventing latch-up or permanent damage. |
Use Scenario: Shields 24 V digital input channels of programmable logic controllers from field-induced surges and relay contact bounce. IC Role / Device Role / Timing Role: Standoff protector on input front-end, operating continuously at 24 V while responding within picoseconds to >1 kV transients. Use Value: Maintains ≤1 μA leakage at 26.8 V, avoiding false triggering of optocoupler-based input stages. |
| LED Driver Power Rail Protection | RS-485 Transceiver Line Protection |
|
Use Scenario: Safeguards constant-current LED drivers against inductive kickback from solenoid switching in signage or street lighting systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed across driver output terminals, absorbing energy from L·di/dt spikes. Use Value: Handles 600 W single-event surges without degradation, preserving driver MOSFET reliability over 10+ year service life. |
Use Scenario: Installed on RS-485 bus lines (A/B) in factory automation networks subject to ESD and lightning-induced surges. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) clamp referenced to signal ground, minimizing data integrity impact. Use Value: Clamps common-mode transients to ≤47.7 V while maintaining signal rise/fall times compatible with 10 Mbps operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33A (Bourns) | Same 33 V nominal, but SMB package (surface-mount); 600 W rating; bidirectional option available | Requires PCB rework for SMT layout; better suited for space-constrained designs than through-hole P6KE33 | Select SMBJ33A when board real estate is limited and automated assembly is preferred |
| 1.5KE33A (ON Semiconductor) | Identical DO-15 package and 33 V rating; same 600 W rating; slightly higher VC = 49.9 V at 12 A | Compatible drop-in replacement in legacy through-hole designs; identical mounting and thermal profile | Choose 1.5KE33A for second-source assurance where pin-compatible DO-15 TVS is required |
Compared with SMBJ33A and 1.5KE33A, the P6KE33 offers the lowest clamping voltage (47.7 V) among DO-15 33 V TVS diodes and is AEC-Q101 qualified in H-grade variants - making it optimal for automotive-critical 24 V rail protection where voltage margin and qualification rigor are decisive.
Availability
P6KE33 is available at Aetrix Electronics and suitable for automotive electronics, industrial PLCs, and LED driver designs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6KE33 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 robust transient immunity in harsh environments - emphasizing AEC-Q101 compliance, tight parametric distribution, and extended temperature operation.
FAQ
What is the maximum clamping voltage of the P6KE33 under standard surge conditions?
The P6KE33 clamps to a maximum of 47.7 V when subjected to a 13.0 A peak pulse current with a 10/1000 µs waveform - this value is measured per IEC 61000-4-5 and defines the upper voltage limit imposed on protected circuitry during surge events. This clamping performance is guaranteed across the full operating temperature range and forms the basis for safe interfacing with 33 V-rated components.
Is the P6KE33 suitable for automotive applications?
Yes - the P6KE33H variant is explicitly AEC-Q101 qualified for automotive use, having passed stress tests including temperature cycling, high-temperature operating life, and mechanical shock. While the base P6KE33 is not qualified, its construction, materials (halogen-free, RoHS-compliant), and 175 °C junction rating align with automotive environmental requirements when used in non-safety-critical subsystems.
How does the P6KE33 differ from the P6KE33A variant?
The P6KE33A has tighter breakdown voltage tolerance (31.4–34.7 V vs. 29.7–36.3 V for P6KE33), lower stand-off voltage (28.2 V vs. 26.8 V), and slightly reduced clamping voltage (45.7 V vs. 47.7 V at rated current). Both share identical package, power rating, and thermal specs - the 'A' suffix denotes enhanced parametric consistency for precision-sensitive applications like regulated power supply protection.
What is the reverse leakage current specification for the P6KE33 at its stand-off voltage?
The P6KE33 exhibits a maximum reverse leakage current of 1 μA when biased at its rated stand-off voltage of 26.8 V - measured at 25 °C ambient. This ultra-low leakage ensures minimal power drain and avoids interference with high-impedance sensing circuits or battery-powered systems where quiescent current is critical to operational lifetime.
Can the P6KE33 be used in bidirectional configurations?
No - the P6KE33 is a unidirectional TVS diode, marked with a cathode band and intended for polarity-specific clamp-to-ground operation. For bidirectional protection, select the P6KE33CA variant (if offered) or use back-to-back P6KE33 devices; however, the standard P6KE33 must be oriented correctly with cathode toward the protected line to function as specified.
P6KE33 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 26.8V
- Voltage - Breakdown (Min):
- 29.7V
- Voltage - Clamping (Max) @ Ipp:
- 47.7V
- Current - Peak Pulse (10/1000µs):
- 13A
- 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)
P6KE33 FAQ
1.How can I place an order for P6KE33 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE33 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 P6KE33 reliable?
The price and inventory of P6KE33 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE33 is usually 5 days.
3.What payment methods are accepted for P6KE33?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE33 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE33?
P6KE33 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE33 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 P6KE33?
For technical support, including P6KE33 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE33 requirements.
6.How does Aetrix verify that P6KE33 is sourced from the original manufacturer or authorized distributors?
All P6KE33 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 P6KE33 meets industry standards.
7.What is the process for return or replacement of P6KE33?
All P6KE33 units undergo pre-shipment inspection (PSI). If there is an issue with P6KE33, 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 P6KE33 part is unused and in its original packaging.
Return procedure for P6KE33:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE33 Tags
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