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Vishay General Semiconductor - Diodes Division P6KE51A-E3/54
- Part No.:
- P6KE51A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE51A-E3/54.pdf
- Description:
- TVS DIODE 43.6VWM 70.1VC DO204AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P6KE51A-E3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary-level overvoltage protection in DC power rails and signal lines. It features a 43.6 V stand-off voltage (VWM), 48.5–53.6 V breakdown voltage (VBR) at 1.0 mA, 70.1 V maximum clamping voltage (VC) at 8.6 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and AC/DC adapter input stages.
For engineers reviewing the P6KE51A-E3/54 datasheet, P6KE51A-E3/54 pinout, P6KE51A-E3/54 application, or P6KE51A-E3/54 equivalent, key selection criteria include clamping performance under 8.6 A surge, thermal resistance (RθJL = 20 °C/W), DO-15 package compatibility with through-hole PCB layouts, and AEC-Q101 qualification status for automotive-grade reliability validation.
Technical Context
This unidirectional TVS operates as a voltage-clamped shunt protector: it remains high-impedance below VWM = 43.6 V, then avalanches sharply at VBR = 48.5–53.6 V to limit transient energy. Its glass-passivated junction enables fast response (<1 ns) and low incremental surge resistance, critical for suppressing ESD and inductive switching spikes on 24 V and 48 V systems.
The device sustains 600 W peak pulse power (10/1000 µs), derates linearly above 25 °C ambient (1.2%/°C), and exhibits 0.102 %/°C temperature coefficient of VBR. With 100 A non-repetitive forward surge rating (8.3 ms half-sine) and 175 °C max junction temperature, it supports robust protection in thermally constrained environments without active cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 43.6 V - Maximum continuous DC or RMS voltage before leakage exceeds 1 µA; defines operating margin below clamping threshold. |
| VBR (Breakdown) | 48.5–53.6 V at 1.0 mA - Guaranteed avalanche onset range; ensures predictable turn-on during transients. |
| VC (Clamping) | 70.1 V at 8.6 A (10/1000 µs) - Maximum voltage seen by protected circuit during worst-case surge; determines downstream component stress. |
| PPPM | 600 W - Peak transient energy absorption capacity; validates suitability for IEC 61000-4-5 Level 4 (4 kV) surge testing. |
| RθJL | 20 °C/W - Junction-to-lead thermal resistance; enables direct solder-point thermal path design for sustained pulse handling. |
| TJ max | +175 °C - Maximum junction temperature; supports operation in under-hood automotive or industrial enclosures. |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test requirements including HTGB, HTRB, and temperature cycling. |
Pinout & Package
Package: DO-15 (DO-204AC) - axial-leaded, molded epoxy case with matte tin-plated leads; 0.242–0.258 inch body length, 0.130–0.138 inch diameter; UL 94 V-0 rated; RoHS compliant (E3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current entry during forward conduction | Connected to lower-potential side (e.g., GND or return path); enables unidirectional clamping from cathode to anode. |
| Cathode (banded end) | Transient voltage reference node | Marked with color band; connected to protected line (e.g., 24 V rail); conducts avalanche current to anode during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables <1 ns response time and stable VBR tolerance across temperature and life cycle. |
| 600 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 surge immunity up to 4 kV in 2 Ω/12 Ω source impedance configurations. |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. |
| Low clamping ratio (VC/VBR ≈ 1.33) | Minimizes protected circuit overvoltage exposure while maintaining margin above VWM. |
| Matte tin-plated leads | Ensures solderability per J-STD-002 and JESD 22-B102; meets JESD 201 Class 1A whisker resistance. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load-dump and jump-start transients in 12 V/24 V vehicle subsystems. IC Role / Device Role / Timing Role: Unidirectional shunt clamp placed between signal line and ground, triggered within nanoseconds of overvoltage onset. Use Value: Limits transient voltage to ≤70.1 V during 8.6 A surges, preventing latch-up or gate oxide damage in downstream ASICs and microcontrollers. |
Use Scenario: Safeguarding digital input channels of programmable logic controllers against induced surges from relay coil flyback or motor drive noise in factory automation cabinets. IC Role / Device Role / Timing Role: Primary-level TVS mounted at terminal block entry point, absorbing energy before reaching optocoupler or Schmitt trigger input stage. Use Value: Clamps 600 W pulses without degradation, enabling >100,000 surge cycles per MIL-STD-883H Method 3015.8 compliance. |
| AC/DC Power Adapter Input | Telecom Line Interface |
|
Use Scenario: Secondary-side DC output protection in offline SMPS adapters subjected to lightning-induced surges on mains-connected outputs. IC Role / Device Role / Timing Role: Standoff-rated TVS across +VOUT/GND, activated only during overvoltage faults exceeding 43.6 V. Use Value: Maintains 1 µA leakage at 43.6 V, minimizing standby power loss while delivering 70.1 V clamping at full 600 W rating. |
Use Scenario: Overvoltage suppression on Ethernet PHY power pins (e.g., PoE midspan injectors) exposed to induced surges from nearby AC wiring. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to local ground plane, coordinated with common-mode chokes for differential-mode surge attenuation. Use Value: Achieves 0.102 %/°C VBR stability, ensuring consistent clamping across -40 °C to +125 °C telecom operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ51A | DO-214AA package (SMB), 51 V VBR, 600 W rating, RθJA = 40 °C/W (vs. 75 °C/W for P6KE51A-E3/54) | Surface-mount layout; higher thermal resistance requires PCB copper pour for equivalent power handling | Select SMBJ51A when space-constrained SMT assembly is required and board-level thermal management is feasible. |
| 1.5KE51A | Same DO-15 package but 1500 W rating, 10/1000 µs, VC = 84.5 V at 17.7 A; larger die size increases capacitance and leakage | Higher-energy surge environments (e.g., utility meter front-end); less suitable for low-leakage signal-line use | Choose 1.5KE51A where system-level surge tests exceed 600 W, accepting higher clamping voltage and leakage current. |
Compared with SMBJ51A and 1.5KE51A, the P6KE51A-E3/54 offers optimal balance of through-hole manufacturability, 600 W capability, and low 1 µA leakage at VWM, making it preferred for cost-sensitive automotive and industrial designs requiring AEC-Q101 validation without SMT reflow complexity or oversized surge margins.
Availability
P6KE51A-E3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and AC/DC power adapter outputs requiring stable component supply with AEC-Q101 qualification and DO-15 through-hole compatibility.
Supply support for P6KE51A-E3/54 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 belongs to Vishay's TRANSZORB® TVS family, engineered for cost-effective, high-surge-capability overvoltage protection in commercial and automotive-grade power and signal line applications.
FAQ
What is the maximum clamping voltage of the P6KE51A-E3/54 under standard test conditions?
The P6KE51A-E3/54 has a maximum clamping voltage (VC) of 70.1 V when subjected to an 8.6 A peak pulse current with a 10/1000 µs waveform at TA = 25 °C. This value is measured across the cathode and anode terminals during transient conduction and defines the upper voltage limit imposed on protected circuits during surge events. The P6KE51A-E3/54 maintains this clamping performance consistently due to its glass-passivated junction and low incremental surge resistance.
Is the P6KE51A-E3/54 suitable for automotive applications?
Yes, the P6KE51A-E3/54 is AEC-Q101 qualified, confirming its reliability for automotive electronics including engine control units, body control modules, and ADAS sensor interfaces. Its 175 °C maximum junction temperature, robust surge handling (600 W, 10/1000 µs), and validated performance across temperature cycling and humidity testing make it appropriate for under-hood and cabin-mounted systems. The P6KE51A-E3/54 meets automotive-grade requirements without requiring derating in typical vehicle thermal environments.
What does the "E3/54" suffix indicate in P6KE51A-E3/54?
The "E3" suffix denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads meeting JESD 201 Class 1A whisker resistance, while "/54" specifies the preferred packaging code: 4000-piece quantity on 13-inch diameter paper tape and reel. This format ensures compatibility with automated through-hole insertion equipment and supports traceable lot-controlled procurement. The P6KE51A-E3/54 is distinct from HE3-suffixed variants, which carry AEC-Q101 qualification and JESD 201 Class 2 whisker resistance.
How does the P6KE51A-E3/54 compare to bidirectional TVS diodes like P6KE51CA?
The P6KE51A-E3/54 is unidirectional and features a cathode band for polarity-sensitive placement, whereas P6KE51CA is bidirectional with no polarity marking and symmetrical clamping in both directions. The P6KE51A-E3/54 provides lower leakage (1 µA at 43.6 V) and tighter VBR tolerance for DC-biased lines, while P6KE51CA suits AC-coupled or floating signal paths. Their DO-15 packages are identical, but circuit role and layout orientation differ fundamentally - the P6KE51A-E3/54 must be oriented with cathode toward the protected line.
What thermal considerations apply when using the P6KE51A-E3/54 in high-temperature environments?
The P6KE51A-E3/54 exhibits a 1.2 %/°C power derating above 25 °C ambient, with RθJL = 20 °C/W enabling efficient heat transfer to PCB copper or chassis via lead solder joints. At 100 °C ambient, its usable peak pulse power drops to ~450 W; full 600 W rating requires heatsinking or airflow. Its 175 °C TJmax allows operation in sealed enclosures up to 125 °C ambient if lead temperature is maintained ≤75 °C per Fig. 5. Thermal design for the P6KE51A-E3/54 must prioritize short, wide copper traces from both leads to maximize conduction.
P6KE51A-E3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 43.6V
- Voltage - Breakdown (Min):
- 48.5V
- Voltage - Clamping (Max) @ Ipp:
- 70.1V
- Current - Peak Pulse (10/1000µs):
- 8.6A
- 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)
P6KE51A-E3/54 FAQ
1.How can I place an order for P6KE51A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE51A-E3/54 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 P6KE51A-E3/54 reliable?
The price and inventory of P6KE51A-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE51A-E3/54 is usually 5 days.
3.What payment methods are accepted for P6KE51A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE51A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE51A-E3/54?
P6KE51A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE51A-E3/54 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 P6KE51A-E3/54?
For technical support, including P6KE51A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE51A-E3/54 requirements.
6.How does Aetrix verify that P6KE51A-E3/54 is sourced from the original manufacturer or authorized distributors?
All P6KE51A-E3/54 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 P6KE51A-E3/54 meets industry standards.
7.What is the process for return or replacement of P6KE51A-E3/54?
All P6KE51A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P6KE51A-E3/54, 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 P6KE51A-E3/54 part is unused and in its original packaging.
Return procedure for P6KE51A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE51A-E3/54 Tags
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