An axial/leaded MLCC capacitor produced by BEC is a specialized type of multilayer ceramic capacitor designed with radial leaded terminations (two metal leads extending from the opposite ends of the ceramic body - a departure from the surface-mount (SMD) chip format of standard MLCCs (which have metalized end-terminations for reflow soldering to PCBs). It combines the core stacked ceramic dielectric/electrode structure of MLCCs with the through-hole radial lead design of traditional discrete capacitors to bridge SMD MLCC performance and through-hole assembly compatibility. Leaded MLCC is seldom seen nowadays, but it can still be seen in some limited applications.
Basic Parameters
|
Product Category |
Axial MLCC capacitor |
|
Capacitance Range |
0.1pF~100UF |
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Voltage Range |
4V~3000V |
|
Working Temperature |
-55℃~125℃ |
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Tolerance |
±1%, ±5%, ±10%, ±20% |
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Certificate |
RoHS, REACH |
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Applications |
Industrial electronics, automotive industry, medical devices, electronics for DIY |
Characteristics
Temperature Coefficient of Capacitance (TCC)
The single most important metric for temperature stability, defined by the dielectric:
C0G/NP0 (Class 1 dielectrics): Near-zero TCC (±30ppm/°C from -55°C to +125°C), ultra-stable capacitance with no significant drift across temperature.
X7R/X5R (Class 2 dielectrics): Moderate stability (X7R: -55°C~+150°C, ΔC/C ≤±15%; X5R: -55°C~+85°C, ΔC/C ≤±15%)-balance of stability and capacitance density, for consumer electronics.
Y5V/Z5U (Class 2 low-stability dielectrics): Poor temperature stability (Y5V: -30°C~+85°C, ΔC/C ≤+20%/-80%)-highest capacitance density at the cost of stability, for non-critical low-frequency circuits.
Wide range: 0.1pF (RF precision) to 100μF (high-cap decoupling) - far higher capacitance density than radial ceramic disc capacitors (limited to low nF) and competitive with small radial electrolytics.
Dielectric-dependent density: Class 2 dielectrics (X7R/X5R) deliver the highest capacitance (μF range) in compact THT packages; Class 1 (C0G/NP0) offers low capacitance (pF/nF) but ultra-stability.
DC bias effect: Present in Class 2 dielectrics (X7R/X5R) - capacitance decreases with applied DC voltage (e.g., 10μF/16V X7R may drop to 5μF at 8V DC bias); negligible for C0G/NP0 (no bias sensitivity).
Production Process
Parts of Our Production Facilities
FAQ
Q1: How is it different from a radial MLCC?
A1: Axial: Leads come from opposite ends (like a leaded resistor), while radial type with both leads come from same end (like most electrolytics)
Most through-hole MLCCs are radial; axial types are less common but used where lead spacing/orientation matters.
Q2: Do axial MLCC capacitors suffer from DC bias effect like chips?
A2: Absolutely yes. This is a critical misconception. The DC bias effect is a material property, not a packaging property. A Class 2 (X7R, X5R, Y5V) axial MLCC will lose capacitance with applied voltage just like its chip counterpart. Only Class 1 (C0G/NP0) are immune.
Q3: Do axial MLCC capacitors crack like chip MLCC capacitors?
A3: Less susceptible but still possible. Cracking risk is lower due to leads absorbing stress
Still avoid excessive board flexing. Do not bend leads right at the body. Use proper strain relief in high-vibration environments
Q4: How can I recognize the markings?
A4: Standard 3-digit code. First two digits: Significant figures. Third digit: Multiplier (number of zeros). Letter: Tolerance (J=±5%, K=±10%, M=±20%) Voltage: Often printed (e.g., "1K" = 1000V). Example: "104K 1K" = 10 × 10⁴ pF = 100,000pF = 0.1µF, ±10%, 1000V rating
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