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P4KE33CA-E3/73
Vishay General Semiconductor - Diodes Division
TVS DIODE 28.2VWM 45.7VC DO204AL
7676 Pcs New Original In Stock
45.7V Clamp 8.8A Ipp Tvs Diode Through Hole DO-204AL (DO-41)
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5.0 / 5.0
- (189 Ratings)
P4KE33CA-E3/73
Product Overview
971691
DiGi Electronics Part Number
P4KE33CA-E3/73-DGManufacturer
Vishay General Semiconductor - Diodes Division
P4KE33CA-E3/73
Description
TVS DIODE 28.2VWM 45.7VC DO204ALInventory
7676 Pcs New Original In Stock
45.7V Clamp 8.8A Ipp Tvs Diode Through Hole DO-204AL (DO-41)
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Quantity
Minimum 1
Minimum 1
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P4KE33CA-E3/73 Technical Specifications
Category
Transient Voltage Suppressors (TVS), TVS Diodes
Packaging
Cut Tape, Reel
Series
TransZorb®
Product Status
Active
Type
Zener
Bidirectional Channels
1
Voltage - Reverse Standoff (Typ)
28.2V
Voltage - Breakdown (Min)
31.4V
Voltage - Clamping (Max) @ Ipp
45.7V
Current - Peak Pulse (10/1000µs)
8.8A
Power - Peak Pulse
400W
Power Line Protection
No
Applications
General Purpose
Capacitance @ Frequency
-
Operating Temperature
-55°C ~ 175°C (TJ)
Mounting Type
Through Hole
Package / Case
DO-204AL, DO-41, Axial
Supplier Device Package
DO-204AL (DO-41)
Base Product Number
P4KE33
Datasheet & Documents
HTML Datasheet
P4KE33CA-E3/73-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8541.10.0080
Additional Information
Standard Package
3,000
Alternative Parts
View DetailsPART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
BZW04P28B-E3/73
Vishay General Semiconductor - Diodes Division
1048
BZW04P28B-E3/73-DG
0.1407
Direct
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
Die nachhaltige Verpackung zeigt das Verantwortungsbewusstsein des Unternehmens. Die Lieferung war extrem schnell – top Service.
de desembre 02, 2025
Schnellster Versand und großer Support, besten Dank.
de desembre 02, 2025
DiGi Electronics' eco-friendly packaging solutions are durable and reliable.
de desembre 02, 2025
I appreciate their prompt responses to technical issues after purchase, which helps me fix problems quickly.
de desembre 02, 2025
DiGi Electronics constantly delivers top-tier products at budget-friendly prices.
de desembre 02, 2025
Their customer service is prompt, professional, and always eager to help.
de desembre 02, 2025
Clear and timely updates made the delivery process stress-free.
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Frequently Asked Questions (FAQ)
When integrating the Vishay P4KE33CA-E3/73 TVS diode into a 24VDC power rail design, what are the key considerations regarding its 28.2V standoff voltage to ensure reliable protection against transient overvoltages without nuisance tripping?
For designs utilizing the Vishay P4KE33CA-E3/73 on a 24VDC rail, the 28.2V reverse standoff voltage is crucial. To prevent nuisance tripping, ensure your nominal operating voltage remains well below this value, ideally with a comfortable margin. Consider potential worst-case voltage fluctuations in your power supply under varying load conditions. The P4KE33CA-E3/73's 31.4V minimum breakdown voltage means transients above this will be clamped. It's advisable to design your system's power supply to operate within 80-90% of the P4KE33CA-E3/73's standoff voltage to maintain robust protection without sacrificing operational stability.
What are the potential risks and design trade-offs when replacing a P6KE30CA TVS diode with the Vishay P4KE33CA-E3/73 in an existing application that requires 30V reverse standoff voltage, given the P4KE33CA's 28.2V standoff?
Replacing a P6KE30CA with the Vishay P4KE33CA-E3/73 presents a direct trade-off regarding reverse standoff voltage. The P4KE33CA-E3/73 has a 28.2V standoff, while the P6KE30CA has a higher standoff (typically around 30V). If your application absolutely requires a 30V standoff, the P4KE33CA-E3/73 might not be a direct drop-in replacement and could lead to premature conduction if the nominal system voltage is too close to 28.2V. You'll need to assess if your system's normal operating voltage is sufficiently below 28.2V to accommodate this change and if the slight difference in breakdown characteristics will still meet your protection needs. If not, consider alternatives with a closer standoff voltage, or verify the P4KE33CA-E3/73's clamping voltage under your specific fault conditions.
Under what specific surge conditions might the 8.8A peak pulse current rating of the Vishay P4KE33CA-E3/73 be insufficient for protecting sensitive electronics in an automotive environment, and what design adjustments could mitigate this risk?
The 8.8A peak pulse current rating of the Vishay P4KE33CA-E3/73, while significant, might be insufficient for severe automotive surge events like those induced by load dump scenarios or direct lightning strikes (though this is a general purpose TVS and not designed for direct lightning). Automotive transient standards (e.g., ISO 7637) often specify much higher peak currents for specific test pulses. If your application is exposed to such robust transients, the P4KE33CA-E3/73 could be overwhelmed, leading to its destruction. To mitigate this, consider using a series combination of TVS diodes with higher pulse current capabilities or, more effectively, a primary suppression component like a varistor or a larger TVS with a higher current rating in conjunction with the P4KE33CA-E3/73 for finer voltage clamping. Always refer to relevant automotive transient standards for your specific application.
What are the implications of the Vishay P4KE33CA-E3/73's high operating temperature range of -55°C to 175°C on its long-term reliability and performance in a densely packed industrial control enclosure with potential for elevated ambient temperatures?
The wide -55°C to 175°C operating temperature range of the Vishay P4KE33CA-E3/73 is a testament to its robust design. However, operating any semiconductor device consistently at the higher end of its temperature range can accelerate wear-out mechanisms, potentially reducing its effective lifespan. In a densely packed industrial enclosure, especially with potential for elevated ambient temperatures (e.g., near motors or power supplies), the P4KE33CA-E3/73 will experience self-heating during transient events and potentially during normal operation if it's close to its standoff voltage. To ensure long-term reliability, implement adequate airflow and thermal management in your enclosure. Consider placing the P4KE33CA-E3/73 on a PCB with good thermal vias to dissipate heat, and ensure its operating temperature during worst-case thermal conditions is well within its rated limits to prevent premature degradation.
When using the Vishay P4KE33CA-E3/73 for general-purpose surge protection in a system with a maximum continuous operating voltage of 25V, what are the critical factors to assess regarding its 'Power Line Protection: No' designation and potential for damage from persistent lower-level overvoltages?
The 'Power Line Protection: No' designation for the Vishay P4KE33CA-E3/73 signifies that it's primarily designed for transient pulse suppression, not for continuous overvoltage protection. While its 28.2V standoff voltage is adequate for a 25V system, persistent overvoltages slightly above this rating, even if below the breakdown voltage, can cause the P4KE33CA-E3/73 to conduct continuously or intermittently, leading to increased power dissipation and potential degradation or failure over time. This can be more detrimental than a single high-energy transient. To mitigate this risk, ensure your power supply is well-regulated and that its continuous operating voltage never significantly exceeds 25V. If there's a risk of sustained overvoltages, consider adding a primary overvoltage protection circuit (e.g., an overvoltage crowbar or a secondary TVS with a higher rating) upstream of the P4KE33CA-E3/73 to handle such scenarios before they reach the TVS diode.
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P4KE33CA-E3/73 CAD Models
Vishay General Semiconductor - Diodes Division P4KE33CA-E3/73 PCB symbols & footprints
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