It is presumed that everyone must have encountered a question in daily life: how to identify an axial polarized electrolytic capacitor - WAA.

INTRODUCTION

The core method to identify an axial polarized electrolytic capacitor is to observe its case polarity markings, which is the most direct and standardized way of judgment. 

1. Identify the Negative Terminal (-) Markings on the Case

• Color Band Marking: A continuous color band is printed around one end of the metal case. The lead corresponding to this color band or the electrode at that end is the negative terminal (-). This is the most commonly used negative marking method in the industry, and WEET WAA also follows this practice.

• "-" Symbol Marking: Some capacitors have the "-" symbol printed on the side of the case.

• Text Marking: A very small number of models are directly marked with "Negative" or its abbreviation "Neg".

2. Auxiliary Judgment by Appearance

• Package Type: Mainly cylindrical metal cases.

• Common Lead Configurations: There are two common lead configurations: radial leads and axial leads. 

SUMMARY

Axial polarized electrolytic capacitors are easy to distinguish; you only need to carefully observe their appearance.

At the same time, if you need free samples for testing, please contact us.

More Details: WEET WAA Axial 85C 2000H Polarized Aluminum Electrolytic Capacitors Standard Low Voltage

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WEE Technology Published on Oct 28, 2025