2A104J 0.1uF 100V Mylar Polyester Film Capacitor

2A104J 0.1uF 100V Mylar Polyester Film Capacitor is a highly reliable, general-purpose component essential for decoupling, filtering, and timing applications in various electronic circuits. Identified by the common code ‘104’ and the voltage/tolerance code ‘2A’ (100V) and ‘J’ (±5%), this polyester film capacitor (Mylar) offers exceptional stability and low dissipation compared to electrolytic types. Therefore, designers frequently select this capacitor for audio signal paths and non-critical timing loops where performance must remain stable across temperature changes. Furthermore, its non-polarized construction allows engineers to use it easily in both AC and DC coupling applications without worrying about orientation, significantly simplifying board assembly.

Key Features:

• High Stability: Maintains excellent capacitance stability across a broad temperature range, which is crucial for precision circuits.
• Non-Polarized: You can install this component in either direction, simplifying assembly and usage in AC signal coupling or DC bypass applications.
• Low Dissipation Factor (DF): Minimizes energy loss and heat generation, consequently improving the overall efficiency of the circuit.
• Self-Healing Property: The metalized polyester film design allows the capacitor to recover from minor internal shorts, enhancing long-term reliability.
• High Insulation Resistance: Ensures minimal leakage current, which offers superior performance, especially in timing and integration circuits.

Technical Specifications:

• Nominal Capacitance (C): 0.1 µF (or 100 nF, marked as 104)
• Rated DC Voltage (V_DC): 100 V
• Capacitance Tolerance: ±5% (J-Code)
• Dielectric Material: Polyester Film (PET, Mylar)
• Operating Temperature Range: −40°C to +85°C (or higher depending on manufacturer)
• Dissipation Factor (tan δ): Typically ≤ 1.0% at 1 kHz
• Insulation Resistance (IR): ≥ 15,000 MΩ (for C ≤ 0.33 µF)

Mechanical Specifications:

• Package Type: Radial (Through-Hole)
• Construction: Non-Inductive, epoxy dip-coated body
• Leads: Tinned Copper Wire
• Lead Spacing: Typically 5.0 mm or 7.5 mm (Always verify the exact pitch)
• Flammability Rating: UL 94 V-0 flame retardant coating

Dimensions (Typical for 5mm Pitch):

• Body Length (W): ≈ 7 mm to 11 mm
• Body Height (H): ≈ 6 mm to 8 mm
• Body Thickness (T): ≈ 2.5 mm to 5 mm
• Lead Diameter: ≈ 0.5 mm

Pinout and Wiring:

• Polarity: None. As a non-polarized film capacitor, you can connect either lead to the positive or negative node in DC circuits.
• Function: Connect this capacitor in parallel with power rails for decoupling high-frequency noise or in series for AC signal coupling.
• Mounting: Use the two radial leads for through-hole mounting onto a Printed Circuit Board (PCB).
• Wiring Note: Always strive to keep lead lengths minimal to reduce parasitic inductance, especially when deploying it as a high-frequency bypass capacitor.

Datasheet Reference:

• Download 2A104J 0.1uF 100V Mylar Polyester Film Capacitor Datasheet

Commonly Used in:

• Audio Circuits: Utilized widely for coupling and bypassing signals, minimizing distortion and improving signal clarity.
• Digital Logic Circuits: Functions as a robust decoupling capacitor to stabilize the supply voltage near ICs (Integrated Circuits).
• Timing Circuits: Provides the required capacitance value for RC oscillators, timers (like the 555), and wave-shaping networks.

Applications:

• Power Supply Filtering: Helps smooth out ripple voltage and suppresses transient noise on DC lines.
• Signal Coupling/Decoupling: Allows AC signals to pass while blocking DC, or shunts unwanted high-frequency noise to ground.
• Voltage Regulators: Improves transient response and stability when placed at the input/output of linear regulators.

Equivalent Models:

• Vishay MKT1818 Series: This line offers functionally equivalent polyester film capacitors with similar voltage and capacitance ratings.
• WIMA MKS2: A popular, high-reliability European equivalent polyester film series.
• Panasonic ECQ-V1H104JL: A standard replacement part that meets the same 0.1µF 100V specifications.

Package Includes:

• 1 x 2A104J 0.1uF 100V Mylar Polyester Film Capacitor