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Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets. |
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29th Nov 2022, 1:05 pm | #1 |
Diode
Join Date: Nov 2022
Location: Shankil, County Dublin, Republic of Ireland.
Posts: 1
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Looking for help with old Philips capacitor values
Hi all. just wondering if anyone can shed light on the value of these 2 old Philips capacitors from 1955. Both are faulty, so unable to read with a cap meter.
capacitor markings: L47KP6.4 and L8K2P74 thanks in advance, Oliver |
29th Nov 2022, 1:18 pm | #2 |
Pentode
Join Date: Nov 2020
Location: Bristol, UK.
Posts: 131
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Re: Looking for help with old Philips capacitor values
47nf (.047uf) and 8.2nf (8200pf)
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29th Nov 2022, 1:55 pm | #3 |
Heptode
Join Date: Jun 2006
Location: Eindhoven, Netherlands.
Posts: 640
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Re: Looking for help with old Philips capacitor values
The L stands for 125 V.
Jac |
29th Nov 2022, 2:02 pm | #4 |
Dekatron
Join Date: Oct 2003
Location: Croydon, Surrey, UK.
Posts: 7,548
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Re: Looking for help with old Philips capacitor values
Yes. The L47K part translates to 47,000pF (as above 47nF or .047uF) and the L8K2 part translates (as above 8,200pF, 8n2 or 8.2nF). Not sure what the other numbers relate to but could be construction or tolerance. Standard 400V polyester should be ideal as replacements.
PS thanks Jac....didn't know that!
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29th Nov 2022, 5:36 pm | #5 |
Dekatron
Join Date: Sep 2003
Location: Near Swindon, North Wiltshire, UK.
Posts: 3,595
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Re: Looking for help with old Philips capacitor values
Markings decoder for Philips black wax dipped axial paper capacitors (I copied and pasted this from an earlier Forum post some time ago, as it would be useful):
First Letter: working voltage = L 125 V No letter 400 V H 600 V S 800 V T 1000 V Capacitance value in pF is (i.e. 56K = 56000pF) Then tolerance code: A + - 10% P + - 20% Example: A capacitor with the markings: "S 10 CP 5.1" = 10nF at 800V 20% tolerance. This is followed by a production code (5.1 for example). |
3rd Dec 2022, 4:00 am | #6 |
Dekatron
Join Date: Dec 2007
Location: Haarlem, Netherlands
Posts: 4,184
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Re: Looking for help with old Philips capacitor values
6.4 and 74 are date codes. Month 6 and 7 of 1954 respectively.
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