Guides / 3.3 V LDO at JLCPCB · Data from 21 October 2026

3.3 V LDO regulators at JLCPCB: basic vs extended

Almost every small board needs a 3.3 V regulator, and at JLCPCB the obvious choice is a basic part with no setup fee. But the basic parts are not always the cheapest once you build more than a few boards. Here are the numbers from 21 October 2026.

The three no-fee 3.3 V LDOs

Searching the JLCPCB library for basic and preferred LDOs with a 3.3 V output returned three parts:

Part	LCSC	Package	Output	Max input	Price at 100
`AMS1117-3.3` (Advanced Monolithic Systems)	C6186	SOT-223	1 A	15 V	$0.1629
`XC6206P332MR-G` (Torex)	C5446	SOT-23	200 mA	6 V	$0.1186
`HT7533-1` (Holtek)	C14289	SOT-89	100 mA	30 V	$0.1181

They cover the usual cases: the AMS1117 for an amp from a 5 V or 12 V input (with over a volt of dropout), the XC6206 for small loads from USB or a LiPo, and the HT7533 for very low quiescent current from a higher input voltage.

The same part number from other manufacturers

AMS1117-3.3 is listed by at least ten manufacturers in the JLCPCB library, and XC6206P332MR by several. The second-source versions are extended parts, but much cheaper:

AMS1117-3.3 from UMW (C347222): $0.0385 at 100, 1.3 million in stock, extended.
XC6206P332MR from UMW (C347376): $0.0187 at 100, 1.7 million in stock, extended.

Where the fee pays for itself

Using the 100-piece prices, with one regulator per board:

AMS1117-3.3: the basic part costs $0.1244 more per board, so the $3 fee for the UMW version is paid back after about 24 boards. At 100 boards it is $16.29 for the basic part against $3.85 + $3 = $6.85 for the extended one.
XC6206: $0.0999 more per board, so the break-even is about 30 boards. At 100 boards: $11.86 against $1.87 + $3 = $4.87.

For a 5 or 10-board prototype the basic part is cheaper. For a production run, the extended second source usually is. Small-quantity prices are higher, so the real break-even moves a little, but the pattern holds.

Same part number does not mean same part

Before you swap, compare the datasheets. The listings already show differences:

The UMW AMS1117-3.3 is listed with 1.3 V dropout at 1 A and a 12 V maximum input; the AMS original with 1.1 V at 800 mA and 15 V.
The UMW XC6206 is listed for −25 to +80 °C; the Torex part for −40 to +85 °C.

For a hobby board on a desk these rarely matter. For something that sits in a car or outdoors, they can.

Better LDOs, and what they cost

The AMS1117 is cheap but old: high dropout and 5 mA of quiescent current. Two common replacements, priced at 100 pieces:

AP2112K-3.3TRG1 (Diodes Inc., 600 mA, SOT-23-5): JLCPCB $0.1406 (extended, 17,291 in stock), DigiKey $0.1447, Mouser $0.138. All three within a few tenths of a cent. Our stock history shows it went out of stock at JLCPCB three times in the last 120 days.
ME6211C33M5G-N (Microne, 500 mA, SOT-23-5): JLCPCB $0.0497 (extended), but only 1,147 in stock, and it went out of stock twice in 120 days. Cheap, but not something to plan 1,000 boards around without a second source.

Which one to pick

Prototype, JLCPCB assembly: one of the three basic parts. No fee, plenty of stock.
More than about 30 boards: a second-source extended part can be cheaper even with the fee, after checking its datasheet.
Battery-powered or low dropout needed: AP2112K or XC6206 rather than AMS1117. Check stock for your quantity first.

Prices and stock are from 21 October 2026 and change daily. If you search from an AI assistant with Next Everything, find_parts with no_assembly_fee: true and a vout filter of 3.3 V reproduces the first table.

About the data

The numbers in this article come from Next Everything, an MCP server we build that lets AI assistants such as Claude, Cursor and Codex check a BOM against the JLCPCB/LCSC catalog and live Mouser and DigiKey prices. If you want to run the same check on your own BOM, the setup guides show how to connect it.

Next Everything is not affiliated with Mouser, DigiKey, JLCPCB or LCSC. Prices are list prices in USD at the time stated and change daily.