Based on this product's specifications, here are some alternatives and similar models
Battery for Samsung Galaxy A3 (2014) SM-A300F 1900mAh Li-ion by extra digital
Summary description:
Replacement Li‑ion battery compatible with Samsung Galaxy A3 (2014) SM‑A300F. Capacity 1900 mAh, designed to restore device runtime and replace worn or degraded original batteries. Intended for use in the specified model only; provides standard charge capacity for daily phone tasks such as calls, messaging, browsing and light apps. Requires correct installation and disposal according to local regulations.