Product Overview

The LGD series of polar aluminum electrolytic capacitors from Jiang Xi Lian Sheng Electronic CO., LTD. are designed for use in electronic equipment. These capacitors are compliant with ROHS directives and meet IEC60384 standards. They offer reliable performance with a category temperature range of -40C to +105C and a load life of 6000 hours at 105C. Key features include a capacitance tolerance of -20% to +20%, and a rated voltage range from 160V to 500V.

Product Attributes

• Brand: LGD Series
• Manufacturer: Jiang Xi Lian Sheng Electronic CO., LTD. (4321 Factory)
• Origin: China
• Certifications: ROHS compliant (2002/95/EC), IEC60384
• Sleeve Color: Purple with gold lettering

Technical Specifications

Product Description

This product specification applies to polar Aluminum electrolytic capacitors (foil type) used in electronic equipment. Designed to meet IEC60384 quality standards, these capacitors are compliant with the ROHS directive (2002/95/EC). They are suitable for applications requiring stable capacitance and reliable performance over a wide temperature range.

Marking Details

Capacitors are clearly marked with nominal capacitance (F), rated voltage (V), cathode polarity (indicated by a black stripe and '-' symbol), series symbol (LGD), manufacturer trademark (LSTL), maximum operating temperature (105C), and annual mark.

Characteristics

Operating Temperature Range: -40C to +105C
Rated Working Voltage Range: 160V to 500V
Capacitance Tolerance: -20% to +20% (M) at 20C, 120Hz
Dissipation Factor (tg) at 20C, 120Hz (MAX): Varies by rated voltage (e.g., 0.15 for 160-250V, 0.20 for 350-400V, 0.24 for 500V).
Leakage Current (MAX) at 20C after 2 minutes:
- 160 to 400Vdc: I 0.02CV + 10A
- 450 to 500Vdc: I 0.03CV + 10A
Load Life: 105C, 6000h with rated ripple current applied. Performance criteria include leakage current initial specified value, D.F. tg 200% of initial, capacitance change 20% of initial.
Shelf Life: 105C, 1000h. Performance criteria after recovery include leakage current 200% of initial, D.F. tg 200% of initial, capacitance change 20% of initial.

Electrical Characteristics

Capacitance Measurement: Frequency 120Hz 12Hz, Voltage 0.5Vrms + 0.5VDC to 2.0VDC.
Leakage Current Measurement: DC leakage current measured after 1-2 minutes of applying DC rated working voltage through a 1000 resistor.
Temperature Characteristics: Impedance and capacitance measured at various temperatures (-40C, -25C, 20C, 105C). Capacitance change within 20% of initial, Dissipation Factor less than specified value.
Surge Test: Rated surge voltage applied for 305 seconds, repeated for 1000 cycles. Capacitance change within 20% of initial, Dissipation factor less than 200% of initial, Leakage current within initial specified value.

Mechanical Characteristics

Lead Strength: Tensile and bending strength specified for wire lead terminals based on diameter (d).
Vibration Resistance: Tested at 10-55 Hz with 1.5mm amplitude for 2 hours in three mutually perpendicular directions. Capacitance stable, appearance normal, capacitance change within 5% of initial.

Solderability

Leads dipped in solder at 260C 5C for 20.5 seconds. Solder alloy to cover 95% or more of dipped lead surface.

Reliability

Soldering Heat Resistance: Leads immersed in solder at 260C 5C for 101 seconds. No visible damage or leakage. Capacitance change within 5% of initial, Tan S and Leakage current less than specified values.
Damp Heat (Steady State): Subjected to 40C 2C and 90%-95% RH for 2408 hours. Capacitance change within 20% of initial, Tan S and Leakage current less than specified values.
Storage at Low Temperature: Stored at -25C 3C for 964 hours. Capacitance change within 20% of initial, Appearance normal.

Pressure Relief (Explosion Proof Test)

AC Test: Applied voltage not exceeding 0.7 times rated DC voltage or 250V AC, whichever is lower, at 50Hz or 60Hz. Series resistor varies by capacitance.
DC Test: Specific DC current applied while applying inverse voltage. Pressure relief device shall open to prevent explosion or metal splatter. Applicable to capacitors with diameter 6mm or more.

Material Composition Table

Guidelines For Using Aluminum Electrolytic Capacitors

1. Polarity: DC electrolytic capacitors are polarized. Reversed voltage may cause damage. Use bipolar capacitors if polarity is uncertain. Not for AC applications.
2. Bipolar Capacitors: For pulse and polarity reverse circuits, not for pure AC or high ripple.
3. Working Voltage: Do not exceed rated voltage. Recommended working voltage is 70-80% of rated voltage for extended life.
4. Ripple Current: Do not exceed permissible ripple current to prevent overheating and damage. Generally not more than 80% of rated current.
5. Fast Charge/Discharge: Use specially designed capacitors for circuits with frequent charge/discharge cycles.
6. Operating Temperature: Characteristics change with temperature. Lower temperatures ensure longer life.
7. Temperature and Life: Life is approximately doubled for every 10C reduction in temperature. Formula: L2 = L1 * 2^((T1-T2)/10).
8. Operating Frequency: Capacitance decreases and tg increases with higher frequencies.
9. Long-term Storage: Apply rated DC voltage treatment before use to address increased leakage current and reduced withstand voltage.
10. Case Insulation: Capacitor case is not insulated from the cathode terminal. Insulation measures are required at the mounting point if case insulation is necessary.
11. Terminal Force: Do not apply excessive force to terminals or leads to prevent breakage or internal connection failure.
12. Circuit Board Cleaning: Do not use halogenated solvents. Recommended solvents: Methanol, isopropanol, ethanol, isobutanol, petroleum ether, propanol, and general detergents.
13. Soldering: Maintain distance from plastic sleeve. Solder bath temperature within 260C, time not exceeding 10 seconds.
14. Hole Layout: Ensure hole spacing on PCBs matches lead spacing to avoid stress on leads. Consider hole layout to prevent solder splashing.