A CAK39H axial wet tantalum capacitor produced by BEC is a high reliable, hermetically sealed capacitor by using tantalum pentoxide dielectric as anode. It meets Chinese military-grade and hermetically sealed axial wet tantalum electrolytic capacitor with silver case, wet electrolyte, high reliability and compliant with GJB733A-96 and QJ/PWV319-2010. It features an all-tantalum case and a hermetic seal, designed for high-reliability performance in extreme environments. It's widely used in aerospace, aviation, military, communication and other mission-critical applications requiring high ripple current and long-term stability
Basic Parameters
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Product Category |
CAK39H axial wet tantalum capacitor |
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Capacitance Range |
10UF~2200UF |
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Voltage Range |
15V~125V |
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Working Temperature |
-55℃~125℃ |
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Tolerance |
±10%, ±20% |
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Certificate |
RoHS, REACH |
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Applications |
Aerospace, military systems, medical equipment, energy applications, telecommunications, defense areas |
Characteristics
All-Tantalum Hermetic Design: Cylindrical all-tantalum case with glass-to-tantalum hermetic sealing, insulation sleeve and axial polar leads for through-hole mounting. Customers can easily tell the polarity marking (the "+" symbol shown on sleeve).
Miniaturized Structure: Optimized internal design achieves smaller volume while maintaining high capacitance and ripple current handling makes it suitable for space-constrained aerospace applications.
Non-Solid Wet Electrolyte: Eliminates thermal runaway risk, ensures stable long-term performance by its high ripple current handling and low ESR.
Military Standard Compliant: Conforms to GJB733A-96 and QJ/PWV319-2010, with high reliability and radiation resistance. It can be tailored for aerospace and other harsh-environment applications.
Reverse Voltage Tolerance: A unique and critical feature. Most CAK39H capacitors are rated to withstand a limited reverse voltage (typically 1.0 to 3.0V DC, specified in the datasheet) without damage. This is hard to realize for solid tantalum capacitors.
Production Process
Parts of Our Production Facilities
FAQ
Q1: What are the DC leakage current and ripple current standard for CAK39H axial wet tantalum capacitors?
A1: The CAK39H maintains GJB733A-96's strict ultra-low leakage standards (temperature-dependent, whichever value is greater).
At +20°C: I₀≤0.0008CRVR or 1μA; at +85°C/+125°C: I₀≤0.006CRVR or 6μA.
It is the same as CAK39. It retains the CAK39's key high-performance attribute: 700mA to 2300mA ripple current handling (low ESR, wet electrolyte design) for continuous AC ripple in aerospace DC-DC converters and pulsed power circuits-all while achieving a smaller physical volume than CAK39 for the same capacitance/voltage rating.
Q2: Does CAK39H axial wet tantalum capacitor have a thermal runaway risk?
A2: Not likely. the CAK39H uses a wet electrolyte which eliminates the thermal runaway risk. If the CAK39H experiences overvoltage/ overcurrent, the wet electrolyte dissipates heat safely instead of igniting, making it a critical choice for mission-critical systems where component failure cannot be tolerated.
Q3: What are the storage requirements for CAK39H axial wet tantalum capacitors?
A3: The CAK39H has far stricter storage requirements than CAK39 (due to its space product qualification, radiation-hardened materials, and miniaturized seal)-critical for preserving space-grade reliability:
Storage conditions: +10°C ~ +30°C (narrower than CAK39's 5°C~35°C), relative humidity ≤60% (no condensation while 75% for CAK39), dry/clean Class 1000 cleanroom environment (no dust/corrosive gases). Shelf life: Sealed hermetic vacuum packaging (standard sealed packaging for CAK39) has a 3-year shelf life (extended for space program long-lead procurement); open packaging must be used within 3 months (6 months for CAK39).
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