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For sale here we have the above…

1 Piece

FEATURES
• Very long useful life: 15000 h at 85 °C
• Low ESR, high ripple current capability
• High resistance to shock and vibration
• Polarized aluminium electrolytic capacitors, non-solid electrolyte
• Cylindrical aluminium case
• Provided with keyed polarity
• 050 series available in solder-lug (SL) version

APPLICATIONS
• Computer, telecommunication, and industrial systems
• Smoothing and filtering
• Standard and switched mode power supplies
• Energy storage in pulse systems

Product Category:	Aluminium Electrolytic Capacitors – Radial Leaded
Product:	Low ESR Electrolytic Capacitors
Termination Style:	Radial
Voltage Rating DC:	63 VDC
Life:	5000 Hour
Series:	050 PED-PW
Brand:	Philips
Product Type:	Electrolytic Capacitors

Pressure relief on the top of the aluminium case.

Charge and discharge proof.

*Despite being ‘new old stock’ these quality Philips caps. are still perfectly serviceable though they may need reforming… the procedure described below is given to aid the engineer but….

Please be aware these are electrolytic capacitors and by their very nature require a high degree of skill when handling and installing, they are intended for use by qualified electronic engineers, please do not purchase and engage in any of these procedures if you are not competent to do so!

Reforming Electrolytic Capacitors

• Manufacturers claim that most old electrolytics can be saved if the correct procedure is followed, regardless of how long they have been unused. Such capacitors must be “reformed”. This process consists of applying rated voltage through a resistance (about 30,000 ohms, five watt) for five minutes plus one minute for each month of storage (see figure 6). As the capacitor reforms, the voltage across the resistor will drop (measured at the Xs in Figure 6). If that voltage will not drop below 10% of applied voltage after one hour, the capacitor is probably beyond help.Reforming Electrolytic Capacitors – The process of reforming an old aluminum electrolytic capacitor consists of the application of rated voltage, through a resistor, for a period equal to five minutes plus one minute per month of storage.The electrolytics appearing on the surplus market have often been in storage for a very long period indeed. Some manufacturers use a visible code, of which the first two digits indicate the year of manufacture.The circuit shown in the sketch above works reasonably well. Apply the rated voltage through a 5W resistor. Anything from 20K-50K will do, as this is far from a precision process. The meter is used to measure the voltage drop across the resistor; when no current is flowing, there will be no drop. Obviously, when there is a large voltage drop (more than 20% of the applied voltage), there must be a significant current flow through the capacitor. The nature of a proper capacitor is to impede DC current flow, so when there is such flow, something must be wrong.Note: Apply the appropriate D.C. voltage to the capacitor with a D.C. power supply. An old Kepco, Lamba etc. tube regulated lab power supply rig works great. Be sure to observe the proper polarity!

Search…. Reforming Electrolytic Capacitors for more information.

For datasheet search…Philips 2222 050 18222

A similar capacitor is now made by Vishay search…050/052 PED-PW

Or go directly to…

http://www.vishay.com/docs/28345/050-052ped-pw.pdf

PLEASE NOTE!