# 3A DC-DC Step-Down Module (Fixed 4.2V Output)

- Category: Power & charging > Voltage converters & regulators
- Also known as: 3A DC-DC Step-Down Module (Fixed 4.2V Output), 3A DC-DC step-down module, 3A降压模块, 4.2V buck converter module, DC-DC降压板, fixed 4.2V output, 固定4.2V降压模块
- Product page: https://partlark.xyz/p/c-3a-dc-dc-step-down-module-fixed-4-2v-output-0dd64892c9

## Details

- Identified as: 3A DC-DC step-down module / fixed 4.2V output

## Listings

Cached marketplace data: goods prices in CNY, freight, taxes and fees excluded. Prices, stock and options can change; confirm on the listing before ordering.

### 1. 会昌县芯和电器部(个体工商户) (1688)

- Listing price: ¥1.30 (option and pack size unconfirmed)
- Listing status: listed; details checked 2026-11-15
- Marketplace listing: https://detail.1688.com/offer/698960617314.html
- Order via Superbuy (affiliate link): https://www.superbuy.com/en/page/buy/?platform=ALIBABA&id=698960617314&partnercode=EU3LLB&trackPayload=pc_share
- Matching options (PartLark variant links for the haul or bulk add):
  - Fixed 4.2V (pack size unknown, stock 0): https://partlark.xyz/p/c-3a-dc-dc-step-down-module-fixed-4-2v-output-0dd64892c9/variant?listing=7776&sku=5913716234542

## Ordering

Paste one or more variant links (one per line) into https://partlark.xyz/basket/bulk-add to add them to a haul. Matches are checked automatically and are not a guarantee of compatibility.