Product Overview

The DGCX X2 series capacitors are designed for suppressing electromagnetic interference (EMI) in power supplies. These metallized polypropylene film capacitors feature a non-inductive winding structure and are encapsulated in a flame-retardant plastic case with epoxy resin. They are suitable for interference suppression and X-line capacitor circuits, particularly in applications where capacitor failure does not pose a risk of electric shock. Key advantages include excellent self-healing properties, high voltage surge capability, and robust construction.

Product Attributes

• Brand: DGCX
• Product Series: MPX
• Capacitor Type: X2 Metallized Polypropylene Film Capacitor
• Construction: Non-inductive winding
• Encapsulation: Flame-retardant plastic case (UL94V-0) and flame-retardant epoxy resin
• Leads: Tin-plated copper-clad steel wires
• Housing Color: Yellow (as per model code Y)
• Certifications: UL&CUL (E499953), ENEC-VDE (40048056), CQC (CQC18001191338)
• Environmental Compliance: RoHS, REACH, Halogen-free (if required)

Technical Specifications

Product Features

• Metallized polypropylene film, non-inductive structure with good self-healing properties.
• Capable of withstanding high voltage surges.
• Encased in a flame-retardant plastic case and sealed with flame-retardant epoxy resin.

Packaging Information

• Inner Box Dimensions (L*W*H): 34.5*23.5*24.5 cm
• Outer Box Dimensions (L*W*H): 49*36*27 cm
• Capacitors are packaged in transparent PVC bags for moisture and dust protection.
• Packaging includes manufacturer part number, quantity per package, and Lot No.
• RoHS environmental marking is applied.

Storage Conditions

• Temperature: Max 35C
• Relative Humidity: Max 80%
• Storage Time: Maximum 12 months from the production date marked on the packaging.
• Avoid prolonged exposure to air, which can degrade lead soldering performance.
• Do not store in high temperature or high humidity environments.

Environmental Characteristics

• Compliant with RoHS requirements.
• Compliant with REACH requirements.
• Compliant with Halogen-free requirements (if specified).

Usage Guidelines

• Do not exceed the upper category temperature limit.
• Avoid overload operation.
• Do not exceed the maximum pulse current.
• Avoid repeated squeezing at the lead root.
• Be cautious of lead tip sharpness.

Soldering Guidelines

• Wave Soldering: TP 110C; Ts 120C, 45 seconds. For polypropylene film capacitors with P 7.5mm, T 4mm, wave soldering time < 4 seconds.
• Soldering Iron: Tip temperature not exceeding 350C, welding time not exceeding 3 seconds.
• Capacitors with printed leads are not suitable for reflow soldering.

Electrical Characteristics & Test Conditions

Unless otherwise specified, tests are conducted within standard atmospheric conditions (Ambient Temperature: 15C35C, Relative Humidity: 25%75%). For disputed results, tests are performed under: Ambient Temperature: 202C, Relative Humidity: 60%70%.

1. Terminal Strength

• Tensile Strength: 10N for wire diameter 0.6&0.8mm; 20N for wire diameter 1.0&1.2mm (10 seconds). No visible mechanical damage.
• Bending Strength: 5N, 90x2 times for wire diameter 0.6&0.8mm; 10N, 90x2 times for wire diameter 1.0&1.2mm.

2. Solderability

• Tinning rate of 95% on leads.
• Soldering flux temperature: 2455C. Immersion time: 2.50.5 seconds.

3. Soldering Heat Resistance

• Appearance: No visible damage.
• Soldering temperature: 2605C. Immersion time: 101 seconds.
• Recovery time: 1-2 hours at -40C, 2 hours.
• DF increase: 0.005.
• Capacitance change: C/C 5%.

4. Thermal Shock

• Appearance: No visible damage.
• Cycles: A=-40C, B=+105C, 5 cycles. Duration: t=30min.

5. Vibration

• Appearance: No visible damage.
• Amplitude: 0.75mm or acceleration 98m/s (whichever is less).
• Frequency: 10-500Hz. Tested in three mutually perpendicular directions, 2h each direction, total 6h.

6. Impact

• Appearance: No visible damage.
• 4000 times, acceleration 390m/s, pulse duration: 6ms.

7. Final Measurement (after tests 4-6)

• Appearance: No visible damage.
• Capacitance change: C/C 5%.
• DF increase: 0.008 (C1.0F, 10kHz), 0.005 (C>1.0F, 1kHz).
• Insulation Resistance change: IR/IR 50%.

8. Climate Sequence (Test Db)

• Dry Heat: +105C, 16 hours.
• Damp Heat Cyclic: Followed by cold and damp heat cycles.
• Final Measurement: Appearance: No visible damage. Capacitance change: C/C 5%. DF increase: 0.008 (C1.0F, 10kHz), 0.005 (C>1.0F, 1kHz). IR change: IR/IR 50%.

9. Steady State Damp Heat

• Appearance: No visible damage.
• Conditions: Relative Humidity 90-95%RH, Temperature: 402C.
• Duration: 56 days (no load).
• Recovery time: 1-2 hours.
• Capacitance change: C/C 5%.
• DF increase: 0.008 (C1.0F, 10kHz), 0.005 (C>1.0F, 1kHz).
• Insulation Resistance change: IR/IR 50%.

10. Pulse Voltage

• Applies pulse voltage: 2.5KV for CR 1 F; [Value not specified] for CR > 1 F.
• Criteria: Capacitor is considered qualified if it does not show self-healing breakdown on three consecutive pulses, or if it completes all 24 pulses with three or more instances of no self-healing breakdown.

11. Endurance

• Appearance: No visible damage.
• Temperature: +110C.
• Test Voltage: 1.25UR.
• Duration: 1000 hours. Voltage is increased to 1000V (RMS) for 0.1s every 1 hour.
• Capacitance change: C/C 10%.
• DF increase: 0.008 (C1.0F, 10kHz), 0.005 (C>1.0F, 1kHz).
• Insulation Resistance change: IR/IR 50%.

12. Charge and Discharge

• Capacitance change: C/C 5%.
• Number of cycles: 10,000.
• Charging time: 0.5s. Discharging time: 0.5s.
• Charging voltage: [Value not specified]. Charging resistance: 220/CR . Discharging resistance: R= CR :uF. Dv/dt: 100V/us.
• DF increase: 0.008 (10KHz, CR1.0uF), 0.005 (1KHz, CR>1.0uF).
• Insulation Resistance change: IR/IR 50%.

13. Flammability Test

• After removal from flame, burning time should not exceed 10 seconds. Burning drips should not ignite thin cotton paper.
• Needle Flame Test: Flame Retardancy Grade B.
• Ignition application time depends on product volume (mm): 10s for V 250; 20s for 250 < V 500; 30s for 500 < V 1750; 60s for V > 1750.

14. Spontaneous Combustion Test

• Gauze wrapped around the capacitor should not be ignited by the flame. Electrical measurements are not required.
• The capacitor should withstand discharge from a stored energy capacitor 20 times. After discharge, the stored energy capacitor charges the tested capacitor to 2.5KV. The interval between discharges is 5 seconds. URAC is continuously applied across the tested capacitor and maintained for 2 minutes after the last discharge.

15. Dielectric Strength

• 4.3UR(VDC), 60 seconds.

16. Capacitance Change (after Endurance, Charge/Discharge, etc.)

• C/C 10% (Endurance)
• C/C 5% (Charge/Discharge, Climate Sequence, Steady State Damp Heat)

17. DF Increase (after Endurance, Charge/Discharge, etc.)

• 0.008 (C1.0F, 10kHz)
• 0.005 (C>1.0F, 1kHz)

18. Insulation Resistance Change (after Endurance, Charge/Discharge, etc.)

• IR/IR 50%

Capacitor Impedance vs. Frequency Curve

Typical curve Z=f(f).

Product Electrical Characteristic Diagrams

Diagrams illustrating product electrical characteristics are available.