Do not confuse this with the 2N3904 transistor variant or the 9E102 optocoupler from discontinued lines. Always check the physical component shape: capacitors are rectangular, brown/tan (X7R) or black (C0G) with no polarity mark.
It read, simply:
Featuring a compact footprint, the 9E102 is available in both Surface Mount (SMT) and Through-Hole (THT) termination styles, utilizing high-reliability contacts and a durable housing suitable for automated assembly processes. 9e102 datasheet
Counterfeit SMD capacitors are common. Use these steps: Do not confuse this with the 2N3904 transistor
This article provides a definitive, deep-dive analysis of the 9E102 datasheet, including electrical characteristics, thermal ratings, soldering profiles, equivalent parts, and common application circuits. If you are designing a high-frequency filter, a decoupling network, or troubleshooting a power supply, this guide is for you. simply: Featuring a compact footprint