Warning: NEVER use tantalum capacitors in a "high energy" circuit where voltage can EVER exceed the voltage rating of the capacitor. Even the shortest spike (sub microsecond) can puncture the oxide layer and "away it goes". Almost as much fun as a LiIon battery!. Related: electronics.stackexchange.com/questions/9120/…
A factor of 2 in value is unlikely to be relevant. Capacitors in some cases can have tolerances of +100% / -50% (wet aluminium electrolytic) but may be +/-5% or 10% or 20% for Tantalum. Warning: NEVER use tantalum capacitors in a "high energy" circuit where voltage can EVER exceed the voltage rating of the capacitor.
Also, if one use ceramic instead of tantalum, it's generally safe use lower value (like 10uF), but one need to check datasheet. True, but soldering those huge-value ceramic capacitors is a problematic operation.
As we're aleready talking about derating and fried tantalum caps: Besides (even very short) voltage spikes causing tantalum caps to fail catastrophically, they are also very sensitive to current spikes (as they will appear when you hot-plug the power connector into the drive).
True, but soldering those huge-value ceramic capacitors is a problematic operation. Bad thermal management of the assembly process and board flex can easily break them, leaving you with a non-fusible heat source on your board (usually connected to a power supply rail) which can make a nice fire.
I would guess that 22μF 22 μ F is the minimum capacitance that the application can use. Part characteristics can differ as their voltage rating increases, so be careful not to go 'too' high. (Don't put a 100V capacitor where there once was a 16V part).
repair
Try finding a replacement cap with the same size and capacitance, and you''re very right about the voltage - 25 V or more is a very good idea. There is a huge derating to be considered when using tantalum …
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How To Remove Electrolytic Capacitors
Including clear, informative video guides of every method, you will get to learn the best option for each different Electrolytic removal scenario. Showing Do''s and Don''ts and things that can...
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PS3 "Research/Experimental"
Once you have the motherboard in your work-bench, identify the NEC/TOKIN Capacitor, then use a Knife, and carefully remove the original NEC/TOKIN Capacitors, they have a Plastic Outer-Shell so removing them …
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Replacing Tantalum capacitor?
True, but soldering those huge-value ceramic capacitors is a problematic operation. Bad thermal management of the assembly process and board flex can easily break them, leaving you with a non-fusible heat source on your board (usually connected to a power supply rail) which can make a nice fire. Hand-soldering? Forgetaboutit...
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Tantalum capacitor
Tantalum capacitors in different styles: axial, radial and SMD-chip versions (size comparison with a match) 10 μF 30 VDC-rated tantalum capacitors, solid electrolyte epoxy-dipped style. A tantalum electrolytic capacitor is an …
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Guidelines for Replacing Tantalum Capacitors Using a Soldering Iron
Use a soldering iron with sufficient wattage and a regulated temperature. The adequacy of the soldering iron can be judged by the amount of time needed to reflow the solder. Beginning at 650 °F (343 °C), adjust the temperature so that the solder reflows within 1.5 s to 3 s.
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How to Read Capacitor Values? (Electrolytic, Ceramic, SMD)
Voltage Rating. For the radial tantalum capacitors after the capacitance code, another two-digit code shows the maximum voltage rating of the capacitor.The unit of working voltage is always in volts(V). In the case of SMD tantalum capacitors, working voltage is marked in alphabetical codes; i.e. E, G, J, A… etc.. We have provided the table of capacitor voltage …
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PS3 "Research/Experimental"
Once you have the motherboard in your work-bench, identify the NEC/TOKIN Capacitor, then use a Knife, and carefully remove the original NEC/TOKIN Capacitors, they have a Plastic Outer-Shell so removing them should be pretty easy, i suggest using a masking tape as there are many traces around the NEC/TOKINs, you can also use the Soldering Iron ...
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Failure Modes of Tantalum Capacitors and the Causes
Leakage current of tantalum capacitor vs. applied voltage by AVX. 5. Failure caused by production and assembly. Many users often only pay attention to the tantalum capacitor selection and design of the product, but ignore the problems that are likely to already occur when installing and assembling chip tantalum capacitors; examples are as follows.
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Replacing Tantalum capacitor?
True, but soldering those huge-value ceramic capacitors is a problematic operation. Bad thermal management of the assembly process and board flex can easily break them, leaving you with …
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Removing and Replacing Surface Mount Electrolytic Capacitors
You do not need to replace a surface mount electrolytic capacitor with another surface mount electrolytic capacitor. You can replace it with an standard radi...
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Tantalum Capacitor | Capacitor Types | Capacitor Guide
The process is repeated until a thick coating is present on all internal and external surfaces of the pellet. Finally, the pellet used in solid tantalum capacitors is dipped into graphite and silver to provide a good cathode connection. In contrast to solid tantalum capacitors, wet tantalum capacitors use a liquid electrolyte. After the anode ...
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Desoldering SMD capacitors
Best way to unsolder most 2-terminal SMDs is to use two soldering irons. Much easier than soldering tweezers as you have more control of the angle of each tip. channel:Taking wierd stuff apart.
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pcb
The jacket is glued down. Can you slit the plastic and remove the capacitor, leaving the jacket where it is? Otherwise, try a bit of acetone on the glue and see if it softens any. (Acetone + perfume = nail polish remover.) If it''s a hard brittle substance, try using a hammer and punch to dislodge the capacitor. If that doesn''t work, try a ...
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Tantalum capacitor benefits and recent advances: …
Compact tantalum capacitors. The two main contributors of improving volumetric efficiency (capacitance density) in tantalum capacitor designs are the evolution of tantalum powder and improvements in packaging. …
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Tantalum Capacitors and Moisture Sensitivity
Vishay supplies surface mount molded and conformal coated solid tantalum capacitors with MnO2 and polymer cathode constructions. The conformal coated devices meet moisture sensitivit y level rating (MSL) of 2a as specified in IPC / JEDEC ® J-STD-020E and are dry packaged in moisture barrier bags (MBB) per J-STD-033. Level 2a specifies a floor life of 4 weeks at 30 °C and 60 % …
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repair
Try finding a replacement cap with the same size and capacitance, and you''re very right about the voltage - 25 V or more is a very good idea. There is a huge derating to be considered when using tantalum capacitors, and using a cap with twice the voltage it is subjected to in your application is not a bad idea at all. One last hint ...
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Tantalum Capacitors: Advantages & Considerations …
What makes tantalum capacitors unique is the usage of tantalum for the anode of the device. This anode is set up as one chunk of material inside of the case, which is very different from the layering style used …
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how to remove a tantalum capacitor and solder them?
How do I remove this white paste in order to desolder the toroid inductor in picture? More importantly, what is this white paste and what role does it serve?
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A guide to various tantalum capacitor types and their uses
Axial, radial and SMD tantalum capacitor types. Tantalum capacitors come in various styles to cater to diverse needs of today''s electronic designs. Common configurations include surface mount device (SMD) chips, stacked smd chips, radial, and axial designs. SMD tantalum capacitors are compact and suitable for automated assembly processes ...
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Minimalist Re-cap of Fat PS3 : r/consolerepair
There are numerous guides, most of which recommend replacing each capacitor with 4 x 470uF tantalum SMDs. This seemed like overkill to me, in addition to being somewhat expensive. There are generally two types of NEC/TOKIN …
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Desoldering SMD capacitors
Follow up with a soldering iron to remove any bits of leg that remain. Logged janoc. Super Contributor; Posts: 3913 ; Country: Re: Desoldering SMD capacitors « Reply #4 on: May 09, 2017, 06:42:21 pm » Quote from: Hero999 on May 09, 2017, 04:40:01 pm. I''ve had that happen to me before. If you reduce the temperature of the heat gun so it just gets hot enough …
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Minimalist Re-cap of Fat PS3 : r/consolerepair
There are numerous guides, most of which recommend replacing each capacitor with 4 x 470uF tantalum SMDs. This seemed like overkill to me, in addition to being somewhat expensive. There are generally two types of NEC/TOKIN caps used by Sony in their older PS3 consoles, 0E108 and 0E128.
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Guidelines for Replacing Tantalum Capacitors Using a Soldering …
Use a soldering iron with sufficient wattage and a regulated temperature. The adequacy of the soldering iron can be judged by the amount of time needed to reflow the solder. Beginning at 650 °F (343 °C), adjust the temperature so that the solder reflows within 1.5 s to 3 s.
Learn More
Electrolytic Capacitor Removal NO Desoldering Required
Removing surface mount electrolytic capacitors without desoldering them. This method is clean, and easier on the circuit board (in many cases) than using a h...
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