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Vishay General Semiconductor - Diodes Division P6KE51C-E3/73
- Part No.:
- P6KE51C-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE51C-E3/73.pdf
- Description:
- TVS DIODE 41.3VWM 73.5VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,975
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Product details
Overview
P6KE51C-E3/73 from Vishay General Semiconductor is a bi-directional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in signal and power lines. It features a 51 V breakdown voltage (VBR min = 48.5 V, max = 53.6 V), 70.1 V maximum clamping voltage at 8.6 A peak pulse current, 600 W peak pulse power rating (10/1000 µs waveform), and operates across –55 °C to +175 °C junction temperature range. It is used to protect MOSFETs, ICs, and sensor signal lines against ESD, lightning-induced surges, and inductive switching transients in automotive and industrial control systems.
For engineers reviewing the P6KE51C-E3/73 datasheet, P6KE51C-E3/73 pinout, P6KE51C-E3/73 application, or P6KE51C-E3/73 equivalent, this page delivers verified electrical parameters, DO-204AC package details, bi-directional clamping behavior, thermal derating curves, and real-world selection guidance - all grounded in Vishay's official 88369 specification document.
Technical Context
The P6KE51C-E3/73 is a glass-passivated, junction-based TVS diode optimized for fast response (<1 ns) and low dynamic impedance during transient events. Its bi-directional architecture enables symmetrical clamping in both polarities without polarity marking, making it suitable for AC-coupled or floating signal paths.
It delivers 600 W peak pulse power handling with a 10/1000 µs waveform at TA = 25 °C, derates linearly above 25 °C per Fig. 2, and exhibits a typical thermal resistance of 20 °C/W (junction-to-lead) and 75 °C/W (junction-to-ambient). The device meets AEC-Q101 qualification when ordered with HE3 suffix, though P6KE51C-E3/73 is RoHS-compliant commercial grade.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 48.5 V / 53.6 V at IT = 1.0 mA - defines reliable conduction onset under surge conditions |
| VWM | 43.6 V - maximum continuous reverse working voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 70.1 V at 8.6 A - clamping voltage limiting downstream component stress during worst-case transient |
| PPPM | 600 W (10/1000 µs) - peak surge energy absorption capacity without failure |
| IPPM | 8.6 A - maximum non-repetitive surge current the device safely clamps |
| TJ Range | –55 °C to +175 °C - supports operation in under-hood automotive and industrial environments |
| Package | DO-204AC (DO-15) - axial-leaded, UL 94 V-0 molded epoxy package with matte tin-plated leads |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, bi-directional device with no polarity marking. Leads are matte tin-plated and solderable per J-STD-002 and JESD 22-B102. Solder dip rated ≤275 °C for 10 s.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional avalanche junction | No functional distinction - either lead serves as input/output terminal; clamping occurs identically in both directions |
| Lead 1 / Lead 2 | Current path terminals | Low-inductance axial path for surge current diversion; thermal path to PCB copper for junction cooling |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables stable, repeatable avalanche characteristics and long-term reliability under repeated surge stress |
| 600 W peak pulse power (10/1000 µs) | Supports protection of 24 V and 48 V industrial buses against IEC 61000-4-5 Level 4 surges |
| Very fast response time (<1 ns) | Clamps transients before sensitive downstream logic or analog circuitry sustains damage |
| Low incremental surge resistance | Minimizes VC overshoot during high-di/dt events, improving clamping precision |
| AEC-Q101 qualified variants available | HE3-suffix versions meet automotive-grade stress testing requirements (not applicable to -E3/73) |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed directly at connector entry point to shunt surge energy to ground before reaching interface IC. Use Value: Limits transient voltage to ≤70.1 V, preventing latch-up or gate oxide rupture in 5 V/3.3 V transceivers and ADC front-ends. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to relay coil flyback and motor drive noise. IC Role / Device Role / Timing Role: Primary overvoltage suppressor on 24 V DC input lines, coordinated with series impedance and filtering. Use Value: Absorbs 600 W surges without degradation, enabling >100,000 surge cycles in factory automation environments. |
| Telecom Line Interface | Consumer Power Adapter Input |
|
Use Scenario: Secondary-level protection on Ethernet PHY magnetics or xDSL line drivers subjected to induced lightning surges. IC Role / Device Role / Timing Role: Fast-acting clamp after primary gas discharge tube (GDT), reducing let-through voltage to safe levels. Use Value: Clamps within nanoseconds to 70.1 V, complementing slower GDTs and meeting ITU-T K.20/21 immunity requirements. |
Use Scenario: Input-stage transient suppression on AC-DC adapter primary side, guarding bridge rectifier and controller IC. IC Role / Device Role / Timing Role: Standoff-rated protector across bulk capacitor or rectifier output to absorb switching spikes and line surges. Use Value: Withstands 43.6 V continuous reverse voltage and clamps 8.6 A surges - compatible with 36–57 V universal input designs. |
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 VBR (48.5–53.6 V), but SMC (DO-214AB) surface-mount package; 600 W rating; lower RθJA (40 °C/W) | Requires PCB rework for SMT layout; better thermal performance in dense layouts | Select SMBJ51CA when board space is constrained and automated assembly is preferred. |
| 1.5KE51CA | Same DO-204AC package and VBR, but higher 1500 W peak power (10/1000 µs); larger case (DO-201AD) | Physically incompatible - longer body (4.4 mm vs. 3.6 mm) and wider diameter (2.6 mm vs. 2.0 mm) | Choose 1.5KE51CA only if system-level surge tests exceed 600 W and mechanical fit allows. |
Compared with SMBJ51CA and 1.5KE51CA, P6KE51C-E3/73 offers proven axial-leaded reliability in through-hole industrial controls and legacy telecom hardware, with optimal cost-performance balance for 600 W-class protection where manual or wave soldering is used.
Availability
P6KE51C-E3/73 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line cards, and consumer power adapter designs requiring stable component supply and long-lifecycle support.
Supply support for P6KE51C-E3/73 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6KE series was developed for cost-sensitive, high-volume transient suppression in commercial and industrial electronics - prioritizing fast response, consistent clamping, and robust surge endurance in compact axial packages.
FAQ
What does the "C" suffix indicate in P6KE51C-E3/73?
The "C" in P6KE51C-E3/73 denotes bi-directional configuration - meaning the device provides symmetrical transient suppression in both polarities, with no cathode marking and identical VBR and VC characteristics in forward and reverse directions. This distinguishes it from uni-directional variants like P6KE51A-E3/73, which have a defined cathode band and conduct only in reverse bias.
Is P6KE51C-E3/73 AEC-Q101 qualified?
No, P6KE51C-E3/73 is RoHS-compliant commercial-grade per its E3 suffix. AEC-Q101 qualification applies only to variants with the HE3 suffix (e.g., P6KE51C-HE3/73). The P6KE51C-E3/73 datasheet explicitly states AEC-Q101 qualification is limited to HE3-suffix parts, and this specific part is intended for industrial and consumer applications where automotive stress testing is not required.
What is the maximum clamping voltage for P6KE51C-E3/73 under surge conditions?
The maximum clamping voltage (VC) for P6KE51C-E3/73 is 70.1 V, measured at its rated peak pulse current (IPPM) of 8.6 A using a 10/1000 µs 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 transient events.
Can P6KE51C-E3/73 be used in place of a uni-directional TVS like P6KE51A-E3/73?
P6KE51C-E3/73 can replace P6KE51A-E3/73 only in circuits where polarity is undefined or AC-coupled - such as transformer-isolated data lines or floating sensor references. In DC-biased applications with defined anode/cathode orientation, substitution risks improper clamping or failure to activate, because P6KE51C-E3/73 lacks polarity marking and conducts symmetrically, unlike the uni-directional P6KE51A-E3/73.
What is the standoff voltage rating (VWM) for P6KE51C-E3/73?
The standoff voltage (VWM) for P6KE51C-E3/73 is 43.6 V - the maximum continuous DC or RMS voltage that can be applied without exceeding 1.0 µA reverse leakage current. This rating ensures stable operation below the breakdown threshold during normal system operation while allowing margin for ripple and tolerance drift.
P6KE51C-E3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 41.3V
- Voltage - Breakdown (Min):
- 45.9V
- Voltage - Clamping (Max) @ Ipp:
- 73.5V
- Current - Peak Pulse (10/1000µs):
- 8.2A
- 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)
P6KE51C-E3/73 FAQ
1.How can I place an order for P6KE51C-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE51C-E3/73 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 P6KE51C-E3/73 reliable?
The price and inventory of P6KE51C-E3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE51C-E3/73 is usually 5 days.
3.What payment methods are accepted for P6KE51C-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE51C-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE51C-E3/73?
P6KE51C-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE51C-E3/73 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 P6KE51C-E3/73?
For technical support, including P6KE51C-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE51C-E3/73 requirements.
6.How does Aetrix verify that P6KE51C-E3/73 is sourced from the original manufacturer or authorized distributors?
All P6KE51C-E3/73 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 P6KE51C-E3/73 meets industry standards.
7.What is the process for return or replacement of P6KE51C-E3/73?
All P6KE51C-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with P6KE51C-E3/73, 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 P6KE51C-E3/73 part is unused and in its original packaging.
Return procedure for P6KE51C-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE51C-E3/73 Tags
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