Based on this product's specifications, here are some alternatives and similar models
Notebook charger MITSU 10.5V 4.3A (4.8×1.7 mm) for Sony laptops
Summary description:
AC adapter for Sony notebooks by MITSU, output 10.5 V and 4.3 A with a 4.8×1.7 mm center-pin DC connector. Designed to power and charge compatible Sony laptop models, providing up to 45 W of power. Includes standard input for mains connection and protection against short circuit and overcurrent where applicable. Useful as a replacement or spare charger for travel and everyday use.