CL21/CL21X Series Capacitor
The CL21/CL21X series capacitors are metallized polyester film capacitors designed for DC and VHF signal applications, including blocking, by-pass, and coupling. They are widely used in filter and low pulse circuits. These capacitors feature a non-inductive wound construction with a wide capacitance range, small size, and light weight. They offer good self-healing properties and a long lifespan, with flame-retardant epoxy resin powder coating (UL94/V-0).
Product Attributes
- Brand: Wuxi Walson Electronics Co., Ltd.
- Origin: China
- Material: Metallized polyester film
- Encapsulation: Flame-retardant epoxy resin powder coating (UL94/V-0)
- Certifications: RoHS
Technical Specifications
| Reference Standard | Operating Temperature Range | Rated Temperature | Rated Voltage (VDC) | Capacitance Range (F) | Capacitance Tolerance | Dissipation Factor (1kHz, 1V) | Insulation Resistance (20, 100V, 1min) | Voltage Proof (20, 5s) |
| GB/T 7332-2011 (idt IEC 60384-2) | -40 +105 | 85 | 100/160/250/400/450/630/1000/1250 | 0.001010.0 | 5 % (J), 10 % (K) | 0.0090 (CR1.0 F) 0.0100 (CR1.0 F) | 7500 M (CR0.33 F) 2500 s (CR0.33 F) | 1.6 UR |
Reliability Test Summary
| Test Item | Test Method | Requirement |
| Outline Check | Visual inspection and caliper measurement | Appearance is regular without visible damage; Mark is regular, clear and correct. |
| Terminal Strength (Pull) | Pull: 5 N, Direction: 180, Time: 101 s | No visible damage |
| Terminal Strength (Bend) | Pull: 2.5 N, Direction: 90, Times: 2 | No visible damage |
| Soldering Heat Resistance | Solder temperature: 2605, Immersion time: 10 s1 s | No visible damage |
| Solderability | Solder temperature: 2355, Immersion time: 2.0 s0.5 s | Lead surface well tinned, welding layer area 95% |
| Rapid Change of Temperature | A=-40, B=+125, 5 cycles, Duration: 30 min | No visible damage |
| Vibration | Frequency range: 10-500 Hz, Amplitude: 0.75 mm, Test duration per direction: 2 h | No visible damage |
| Bump | Times: 4000, Acceleration: 390 m/s, Pulse duration: 6 ms | No visible damage |
| Climate Sequence | Dry Heat (+125, 16h), Damp Heat Cyclic (Db, Severity b), Cold (-40, 2h), Damp Heat Cyclic (Db, Severity b) | Appearance no visible damage, marking clear. Capacitance change: |C/C| 5%, Tan increase: 0.008 (1kHz), I.R. 50% of rated value. |
| Damp Heat Steady State | Temperature: +402, Humidity: 93%2%RH, Duration: 21 Days | No visible damage. Capacitance change: |C/C| 5%, Tan change: 0.005 (1kHz), I.R. 50% of initial measurement. |
| Endurance | Temperature: +852, Duration: 1000 h, Test voltage: 1.25 UR | No visible damage, marking clear. Capacitance change: |C/C| 8%, Tan change: 0.005 (1kHz), I.R. 50% of initial measurement. |
| Temperature Characteristic | Static method at -40, +20, +105 | -3.6%C/C0 at -40; 0C/C+6.3% at +105. |
| Charging and Discharging | Times: 10000, Charging voltage: 1.0 UR, Charging/Discharging time: 0.5 s | Capacitance change: |C/C| 5%, Tan change: 0.005 (1kHz), I.R. 50% of initial measurement. |
Product Characteristic Graphs
Temperature Characteristic Curve
Capacitance vs. Temperature at 1kHz
Dissipation Factor vs. Temperature at 1kHz
I.R. vs. Temperature
Frequency Characteristic Curve
Capacitance vs. Frequency (Room Temperature)
Dissipation Factor vs. Frequency (Room Temperature)
Welding Information
Welding heat can impact capacitor leads and encapsulation. High temperature and prolonged welding can affect performance and lead to failure. Refer to welding charts for recommended conditions.
2511101810_WALSON-C212E22427P20001_C52205067.pdf
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