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P4KE550A-E3/54
Vishay General Semiconductor - Diodes Division
TVS DIODE 495VWM 760VC DO204AL
5698 Pcs New Original In Stock
760V Clamp 400mA Ipp Tvs Diode Through Hole DO-204AL (DO-41)
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5.0 / 5.0
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P4KE550A-E3/54
Product Overview
1002269
DiGi Electronics Part Number
P4KE550A-E3/54-DGManufacturer
Vishay General Semiconductor - Diodes Division
P4KE550A-E3/54
Description
TVS DIODE 495VWM 760VC DO204ALInventory
5698 Pcs New Original In Stock
760V Clamp 400mA Ipp Tvs Diode Through Hole DO-204AL (DO-41)
CAD Models - PCB Symbols & Footprints
Quantity
Minimum 1
Minimum 1
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P4KE550A-E3/54 Technical Specifications
Category
Transient Voltage Suppressors (TVS), TVS Diodes
Packaging
-
Series
TransZorb®
Product Status
Active
Type
Zener
Unidirectional Channels
1
Voltage - Reverse Standoff (Typ)
495V
Voltage - Breakdown (Min)
550V
Voltage - Clamping (Max) @ Ipp
760V
Current - Peak Pulse (10/1000µs)
400mA
Power - Peak Pulse
300W
Power Line Protection
No
Applications
General Purpose
Capacitance @ Frequency
90pF @ 1MHz
Operating Temperature
-55°C ~ 150°C (TJ)
Mounting Type
Through Hole
Package / Case
DO-204AL, DO-41, Axial
Supplier Device Package
DO-204AL (DO-41)
Base Product Number
P4KE550
Datasheet & Documents
HTML Datasheet
P4KE550A-E3/54-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8541.10.0070
Additional Information
Standard Package
5,500
Alternative Parts
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MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
我對DiGi Electronics的產品品質感到非常驚喜，質感細膩，做工精良，值得推薦！
de desembre 02, 2025
Ich bewundere das ökologische Engagement von DiGi Electronics, besonders die nachhaltige Verpackung und die Preise.
de desembre 02, 2025
The team at DiGi Electronics always makes me feel valued with their friendly attitude and personalized service.
de desembre 02, 2025
The support team was patient and thorough, helping me find exactly what I needed without any hassle.
de desembre 02, 2025
Their customer service team is truly professional; they handled my order with care and expertise.
de desembre 02, 2025
Efficient stock management means minimal downtime and reliable service.
de desembre 02, 2025
DiGi Electronics offers unparalleled stock availability, ensuring I always find what I need when I need it.
de desembre 02, 2025
Components from DiGi Electronics are surprisingly tough. Even after intense testing, they show no signs of degradation.
de desembre 02, 2025
Their price advantages make it easy to stock up on dependable electronics.
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Frequently Asked Questions (FAQ)
What are the key reliability risks when using the P4KE550A-E3/54 TVS diode in high-vibration industrial environments, and how can I mitigate them given its DO-204AL (DO-41) axial package?
The P4KE550A-E3/54’s through-hole DO-204AL (DO-41) axial package, while robust electrically, presents mechanical reliability risks in high-vibration settings due to lead fatigue and solder joint stress. Unlike surface-mount TVS diodes with flexible terminations, axial leads can act as cantilevers, amplifying mechanical stress at the PCB attachment points. To mitigate this, use strain relief techniques such as looping the leads before soldering, securing the body with adhesive (e.g., silicone RTV), or mounting it perpendicular to the board with support brackets. Additionally, ensure adequate PCB pad design with reinforced annular rings and consider conformal coating to reduce moisture-induced corrosion at stress points. These steps help prevent premature failure in automotive, aerospace, or heavy machinery applications where vibration is a concern.
Can the P4KE550A-E3/54 safely replace a P6KE550A in a 480V AC line protection circuit, and what derating or layout considerations are necessary?
While both the P4KE550A-E3/54 and P6KE550A share similar breakdown and clamping voltages, the P4KE550A-E3/54 has a lower peak pulse power rating (300W vs. 600W), making direct replacement risky in high-energy surge scenarios like lightning-induced transients on 480V AC lines. The P4KE550A-E3/54 may overheat or fail prematurely if subjected to repeated or high-magnitude surges. If substitution is unavoidable due to sourcing constraints, implement additional protection upstream (e.g., gas discharge tubes or MOVs) to limit energy reaching the TVS. Also, ensure the PCB layout minimizes loop area between the TVS and protected circuitry to reduce inductive voltage overshoot. Always perform surge testing per IEC 61000-4-5 to validate performance under expected conditions.
How does the 90pF capacitance of the P4KE550A-E3/54 affect signal integrity in high-speed data lines, and is it suitable for protecting RS-485 or CAN bus interfaces?
The P4KE550A-E3/54’s 90pF capacitance at 1MHz is relatively high for high-speed communication lines like RS-485 or CAN bus, which typically operate at data rates up to 10 Mbps. This capacitance can distort signal edges, cause intersymbol interference, and reduce bandwidth, especially in long-cable or multi-drop topologies. While the P4KE550A-E3/54 may suffice for low-speed industrial buses (<1 Mbps), it is not ideal for high-speed applications. For such cases, consider lower-capacitance alternatives like the SMAJ550A (≈15pF) or bidirectional TVS arrays designed for signal lines. If you must use the P4KE550A-E3/54, minimize stub lengths, use impedance-matched termination, and validate signal integrity with eye diagram testing to ensure compliance with protocol timing margins.
What thermal management precautions are needed when installing the P4KE550A-E3/54 in an enclosed power supply with limited airflow, given its 300W peak pulse power rating?
Although the P4KE550A-E3/54 is rated for 300W peak pulse power, this rating assumes a 10/1000µs transient and standard thermal conditions. In an enclosed, low-airflow environment, heat dissipation during repetitive surges can cause junction temperatures to exceed the 150°C limit, leading to thermal runaway or degraded clamping performance. To prevent this, ensure the TVS is mounted away from heat-generating components, use a thermally conductive pad or heatsink if space allows, and avoid clustering multiple high-power devices nearby. Additionally, monitor duty cycle—frequent surges reduce effective thermal capacity. For mission-critical enclosed systems, consider derating the device by 20–30% and validate thermal performance with infrared imaging or thermocouple testing under worst-case surge conditions.
Is the P4KE550A-E3/54 a viable drop-in replacement for the obsolete 1.5KE550A in legacy telecom line protection circuits, and what hidden compatibility issues should I watch for?
The P4KE550A-E3/54 and 1.5KE550A both offer 550V breakdown and similar clamping characteristics, but the P4KE550A-E3/54 has a lower peak pulse power (300W vs. 1500W), making it unsuitable as a direct drop-in in high-energy telecom surge environments such as those defined by GR-1089 or ITU-T K.20. The 1.5KE550A was designed for severe lightning and power cross events, whereas the P4KE550A-E3/54 is intended for general-purpose, lower-energy transients. Using it in such applications risks catastrophic failure during real-world surges. If legacy system constraints prevent upgrading to a higher-power TVS like the 1.5KE550CA, combine the P4KE550A-E3/54 with a series inductor or fuse to limit current, and add a secondary protection stage (e.g., GDT) to shunt bulk energy. Always revalidate the entire protection scheme with surge immunity testing.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
P4KE550A-E3/54 CAD Models
Vishay General Semiconductor - Diodes Division P4KE550A-E3/54 PCB symbols & footprints
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