What do the numbers 6X12, 10X17, 5X11, etc mean?

The numbers represent the size of the case (the outside) of the capacitor in millimeters, i.e. 6X12 means 6mm wide X 12mm tall, 10 X 17 means 10mm wide X 17 mm tall.

How good are these capacitors? Asking anyone who has used them in components or a while (over 6 months)? I see some reviews mention leaking or bulging

I have not had any problems with leakage. Values have been accurate, i precheck every component before i install it. I’m not sure why a capacitor would be bulging, perhaps others are using incorrect values?

What if one explodes? I had a 470 microfarad 16V capacitor explode about 8 inches from my face, so I got a shrapnel wound just above my eyebrow.

Electrolytic capacitors can explode for two main reasons: reverse polarity and over-voltage. Your design should have a voltage safety margin (e.g., 50% above Vpeak) and especially prevent any reverse voltage. Higher voltage or higher capacitance requires a larger physical size, but don't try to use too low a rating to keep your project small.

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D**7

Storage system problem solver.

Great storage system with a wide variety of capacitors. This kit is perfect for a quick restock of basic values and the slim easy to access book-like case is a great way to keep them organized and readily accessible. All at a good price.

11.10.2025

C**O

Good for bench testing. Just check value before using

Cheap but good for testing. Wouldn’t use as a permanent part replacement. Esr is good and close in value just don’t know how long they will last.

5.11.2025

K**B

Great Capacitor Assortment

This is a nice capacitor assortment. The components containers are fantastic, they are well marked making it easy to find the value you need, no fiddling around with storage bags or drawers, and they store very nicely. Components are well marked, no problems with polarity, and they solder well.

2.09.2025

R**.

Great selection

Great set and selection. Good price. Happy with purchase.

14.10.2025

B**N

Good but not top tier.

it seems like a very nice set of Standard caps. Goes with the rest of the library book type set. I was Not originally going to buy the Electrolytics because of the QC issues, but figured a library of New Spares that test good of any brand name is better than anything from the parts graveyard, or an already failed one. Definitely still test before use..i got one single mangled one..petty. There are no Big high-reputation brand names in the kit. For Mission critical, or special TV restorations, its probably still better to order specific values needed from a place like Mousers, and stick with known reliable brands like Rubycon, Panasonic, Chemicon, Dublier and the like.

2.11.2025

G**T

Perfect addition for any electronic lab

Well worth the price !

20.11.2025

L**Z

pretty much has everything you need in kit

order arrived quickly

2.01.2026

D**L

very handy and the components have been proven stable quality.

I love having these on hand for projects and repairs. the cases are especially nice with the book style labels.

20.07.2025

ASIN	B08V5815K7
Best Sellers Rank	#14,480 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #32 in Industrial Electrical Capacitors
Brand	EEEEE
Brand Name	EEEEE
Capacitance	1000 Microfarad
Capacitance Tolerance	20
Customer Reviews	4.8 out of 5 stars 836 Reviews
Included Components	Capacitor
Item Shape	Round
Manufacturer	1A Manufacturing Ltd.
Material	Plastic
Material Type	Plastic
Maximum Voltage	50 Volts
Mounting Type	Snap-In Mount
Operating Voltage	50 Volts
Shape	Round

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