Passive Components

News : 318
Date Posted	News Title
12 May 2008	Miniature chip capacitor is suitable for automatic mounting The RTMC chip capacitor from Skymos Electronics Ltd is a miniaturized capacitor that comes in tape-and-reel packaging, suitable for automatic mounting. It features epoxy resin coating for resistance against extreme heat, humidity and mechanical abuse. It is available with various lead configurations.
12 May 2008	Ceramic disc capacitor is available in low- and mid-voltage, mid- and high-voltage versions The Zonkas-C ceramic disc capacitor from Zonkas Electronic Co. Ltd is available in low- and mid-voltage (Darez) and mid- and high-voltage (Epoxy) versions, with 0.5pF to 0.22µF and 0.5pF to 0.1µF capacitance ratings, respectively. Its spark gap is below 1pF at 1kV to 2kV DC.
12 May 2008	Supercapacitor lasts up to 100,000 cycles The SR2R5-205 supercapacitor from Shandong Heter Battery Technology Co. Ltd has 4F nominal capacity at 5.5V DC and lasts up to 100,000 cycles. It has about 6ohms ESR at 1kHz AC and operates in temperatures within –25 degrees to 70 degrees Celsius.
12 May 2008	Aluminum electrolytic capacitor has 2,000hrs load life Vertical Technology Co. Ltd is offering its CK series of aluminum electrolytic capacitors that has 2,000hrs load life and up to 105 degrees Celsius operating temperature range. The V-type capacitor supports surface-mounting on to high-density circuit boards. It has 6.3V to 50V voltage range and 1µF to 1,000µF capacitance with +/-20 percent tolerance at 120Hz, 20 degrees Celsius. Its maximum leakage current after 2min is 0.01CV or 3µA.
07 May 2008	Chip resistors for power units, battery chargers TA-I Technology Co. Ltd has released RLM37 (3720), a chip resistor model with resistance of 1mohm to 50mohm. The products are suitable for large current detecting, and are used in various applications such as power units for CPU, battery chargers, power supplies and DC/DC converters. The products have UL-94 V-0 grade molding compound coating.
07 May 2008	Chip resistors have up to 10Mohm resistance Walsin Technology Corp. (WTC) manufactures various models of chip resistors including general purpose, low ohmic and ultra-low ohmic. Its general purpose chip resistors feature resistance of 1ohm to 10Mohm and tolerance of +/-1 percent to +/-5 percent. The products come in sizes of 0201 to 2512 and have rated power of 0.05W to 1W.
07 May 2008	Thermistors have resistance of up to 300ohm Nanjing Ke Min Electronic Co. Ltd introduces its NSP model of thermistors used in switching and control power supplies, UPSes, electronic heaters and energy-saving lights for circuit protection. The products feature rated resistance of 5ohm to 300ohm and maximum steady state current of 0.1A to 1A. Thermal dissipation constant is 9mW/°C to 14mW/°C and thermal time constant, 16s to 28s.
06 May 2008	Solid conductive polymer aluminum electrolytic capacitor has 2,000hrs load life The VPZ from Zhuhai Leaguer Capacitor Co. Ltd is an extra-low ESR conductive polymer solid aluminum electrolytic capacitor that offers 2,000hrs load life at 105 degrees Celsius. It operates in temperatures within –55 degrees to 105 degrees Celsius and has 100uF to 2,700uF nominal capacitance. It has 2.5V to 165V DC rated voltage.
30 Apr 2008	High-capacitance electrolytic capacitor has low ESR Enercon Capacitor Co. Ltd offers its SEL series of conductive polymer solid electrolytic capacitors. The high-capacitance OS-con series has low ESR and endurance of -55 degrees to 105 degrees Celsius for 1,000hrs. It has a rated voltage of 20V to 25V and rated capacitance of 2.2µF to 2,000µF.
28 Apr 2008	China's 11th Five-Year Plan calls for increase in critical electronic component supply Responding to the social and economic development needs outlined in the Eleventh Five-Year Plan (2006-2010), China is expanding production of electronic components, particularly critical components used in consumer electronics. The region is bent on increasing resistor and capacitor output, expecting both products to account for 90 percent of total chip shipments by 2010. This should help increase its current global market share of about 30 percent.
22 Apr 2008	RoHS-compliant trimming potentiometer is suitable for use in automatic adjustment equipment The CSTP series of 35mm trimming potentiometer from CviLux Corp. is RoHS-compliant and features a rotor design that is suitable for use in automatic adjustment equipment. It is made from cermet materials and supports open frame, single-turn circuit adjustments. It has 200gf-cm maximum shaft torque, 0.1W power at 70 degrees Celsius, 50V maximum working voltage and 100ohms to 1Mohm standard resistance range, with +/-25 percent standard resistance tolerance. Its minimum resistance is about 1Kohm to 20ohm. Operating at 0.1W of power at 70 degrees Celsius and +/-5 percent TRS, its load life lasts up to 1,000hrs. It has +/-10 percent rotation life and 5 percent maximum CRV.
21 Apr 2008	V-chip-type standard conductive polymer capacitor has 1,500uF capacitance The VPT series from Zhuhai Leaguer Capacitor Co. Ltd is a V-chip standard conductive polymer capacitor that features 6.8uF to 1,500uF nominal capacitance at 2.5V to 25V DC voltage rating. Its capacitance tolerance is +/-20 percent at 120Hz in temperatures within 20 degrees Celsius. It has 0.2uA leakage current after 2min application of rated voltage. Available sizes are 6.3mm, 8mm and 10mm in diameter.
12 Apr 2008	Chip resistor is surface-mounted via reflow, flow soldering Faithful Link Industrial Corp. has released its surface-mount chip resistor that supports flow and reflow soldering, and operates in temperatures within –55 degrees to 125 degrees Celsius. Available in 0402, 0603, 0805, 1206, 1210, 2512 and 2010 sizes, the device comes in E24 (5 percent) and E96 (1 percent) tolerances with standard values of 0R, 1R to 10M and 10R to 1M, respectively. It has 0.5A to 1A current rating, 15V maximum operating and 50V maximum overload voltages, 50V dielectric strength and 1ohm to 1Mohm resistance.
12 Apr 2008	Passivated NiCr resistor has up to 1 percent tolerance The AR series from Liean-Gimn Enterprise Co Ltd is a passivated NiCr thin film chip resistor that offers +/-0.01 percent to +/-1 percent tolerance, suitable for use in medical equipment, testing/measuring instruments, communication devices, consumer electronics and various high-end applications. It has +/-5ppm/degree Celsius to +/-50ppm/degree Celsius TCR. It is RoHS-compliant.
08 Apr 2008	Rotary potentiometer has 200gf-cm maximum torque, less than 100mV sliding noise The 16J21 rotary potentiometer from Deshang Precision Electronic Co. Ltd has 20gf-cm to 200gf-cm total rotational torque with less than 100mV sliding noise, and 35deg +/-10deg switch action angle. It has 0.125W power rating, A/B/C/D/W resistance taper, and 2kgf minimum rotation stopper and 3kgf to 8kgf push-pull strengths. It withstands 500V AC dielectric voltages for 1min and lasts 10,000 rotation cycles. Its insulation withstands more than 100Mohms at 500V DC.
08 Apr 2008	Thermistors feature up to 300ohm resistance Nanjing Ke Min Electronic Co. Ltd produces thermistors used in switching power supplies, uninterruptible power supplies, electronic heaters and energy-saving lights. The components feature rated resistance of 5ohm to 300ohm and maximum steady state current of 0.1A to 1A. Thermal dissipation constant is 9mW to 14mW per °C and thermal time constant is 16s to 28s.
26 Mar 2008	Tantalum capacitor has up to 1,500uF capacitance The SANY 0027 tantalum capacitor from Powerburg Electronics Co. Ltd offers 0.1µF to 1,500µF capacitance. It operates in temperatures within –55 degrees to 125 degrees Celsius.
25 Mar 2008	Varistor for lighting protection provide 640J energy Hongzhi Enterprises Co. Ltd’s MYL40D511K varistor provides 640J energy in 10/1,000µs, suitable for use in various lighting protection applications. The UL-approved device has 2,700pF typical capacitance at 1kHz and 510V voltage. It has 320V AC rms/415V DC maximum allowable voltage and 845V/300A (lp) in 8/20µs maximum allowable clamping voltage. Its peak current ratings are 40kA (once) and 30kA (twice) in 8/20µs.
25 Mar 2008	Conductive polymer aluminum capacitor has 7ohms minimum ESR The RL series from EneSol Co. Ltd is a conductive polymer aluminum solid capacitor that has 7ohms, 10ohms, 11ohms, 16ohms or 25ohms ESR, depending on model type. It has 100uF to 2,700uF capacitance with +/-20 percent (M) tolerance, 2.5V to 16V rated voltage and 0.1deg maximum loss-angle tangent.
25 Mar 2008	Mini MEF has self-healing properties Model CL25 from Joey Electronics Co. Ltd is a miniaturized metallized polyester film (MEF) capacitor that has self-healing properties for long operational life. It has 0.001uF to 1uF capacitance with +5 percent (J), +10 percent (K) and +20 percent (M) tolerance and 1 percent maximum dissipation at 1kHz. Its rated voltages are 50V/100V DC and 250V DC, and it withstands 1.5V terminal-to-terminal voltage in 20 degrees +/-5 degrees Celsius for 2s, with 10mA cut-off current. It operates in temperatures within –40 degrees to 85 degrees Celsius,

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