A CA306 axial wet tantalum capacitor produced by BEC is a hermetically sealed axial wet tantalum electrolytic capacitor with silver-coated packaging, polar axial leads and a wide operating temperature range of -40°C to +180°C, which is ideal for ultra-high- temperature and harsh industrial applications such as oil and gas exploration, complying with the QJ/PWV313-2009 standard. It stands out for its low leakage current, low dissipation factor, and long-term reliability. It features a silver case, glass seal, and polarity, offering high capacitance in a small package. It is widely used in oil and gas exploration and drilling equipment, as well as other high-temperature or resistant electronic equipment in the DC or pulse circuits.
Basic Parameters
|
Product Category |
CA306 axial wet tantalum capacitor in 180℃ |
|
Capacitance Range |
1UF~680UF |
|
Voltage Range |
10V~125V |
|
Working Temperature |
-40℃~180℃ |
|
Tolerance |
±10%, ±20% |
|
Certificate |
RoHS, REACH |
|
Applications |
Aerospace, military and avionics, oil and gas Exploration |
Characteristics
Full Hermetic Sealing: Silver-coated metal cylindrical hermetic seal (100% gas/liquid-tight) – eliminates electrolyte evaporation, moisture ingress, and corrosive gas contamination, the core design for long-term (5+ year) operation at 180°C (no performance degradation from seal failure).
Polar Axial Lead Design: Rigid, corrosion-resistant axial leads with strict polarity marking (manufacturer-standard); external high-temperature insulation sleeve (resistant to 180°C continuous heat) prevents short circuits between the metal case and adjacent conductive components in compact equipment.
High-Grade Electrode Construction: Sintered high-purity, high-density tantalum powder anode with a uniform, thick tantalum pentoxide (Ta2O5) dielectric film (formed via precision anodization) – ensures dielectric stability at 180°C; 180°C-optimized liquid electrolyte cathode with high ion conductivity, formulated to avoid thermal degradation at maximum operating temperature.
Reinforced Mechanical Interface: Reinforced lead-to-hermetic case welding connection, no loose leads under severe vibration/shock; cylindrical metal case with high structural strength, resistant to mechanical impact and pressure (suitable for downhole high-pressure environments).
Production Process
Parts of Our Production Facilities
FAQ
Q1: What are the storage requirements for the CA306 capacitors?
A1: The CA306 capacitors have exceptional storage stability due to its hermetic seal (no electrolyte evaporation). They are required to be keep:
Environment: 0°C ~ 30°C, relative humidity ≤85% (dry/cool, no condensation).
Avoidance: Corrosive gases (H₂S/Cl₂), direct sunlight, mechanical impact, heavy pressure, and strong EM fields.
Packaging: Store in the original sealed anti-static packaging (unpack only before use). No pre-testing needed for short-term storage (<24 months). For long-term storage (>24 months), only a 25°C leakage current test is required before use.
Q2. What industry standard do the CA306 capacitors comply with, and what does the standard require?
A2: The CA306 is fully compliant with QJ/PWV313-2009, a specialized Chinese national standard for ultra-high-temperature, high-reliability wet tantalum capacitors. The standard mandates:
10,000+ hours of 180°C high-temperature aging with zero out-of-spec parameter drift.
Severe thermal cycling (-40°C~180°C) and mechanical vibration/shock testing.
100% helium leak detection for hermetic seal integrity on every unit.
100% testing of leakage current, capacitance, and DF.
Q3: What is the CA306's operating temperature range, and when does voltage derating start?
A3: Continuous operating temperature: -40°C to +180°C (intermittent operation up to 200°C with strict derating).
Voltage derating: Mandatory starting at 85°C (a key design choice for 180°C stability).
This proactive derating prevents cumulative thermal stress on the dielectric film and electrolyte-unlike CA82/CA501, which only require derating above 155°C.
Hot Tags: ca306 axial tantalum capacitor in 180°c, China ca306 axial tantalum capacitor in 180°c manufacturers, suppliers, factory, CA Axial Solid Tantalum Capacitor, CAK31 Axial Tantalum Capacitor, military grade tantalum capacitor, solid tantalum, tantalum capacitor for defence, THC Hibrid Tantalum Capacitor
