Search LCSC Electronics for electronic components — find parts by LCSC number (Cxxxxx) or MPN, check stock/pricing, download datasheets, analyze specifications. Sister company to JLCPCB, same parts library. Sync and maintain a local datasheets directory for a KiCad project, or use batch MPN-list seeding (`--mpn-list`) for bulk workflows without a project. No API key needed — uses the free jlcsearch community API. Use this skill when the user mentions LCSC, JLCPCB parts library, JLCPCB assembly parts, production sourcing, Cxxxxx part numbers, needs to find LCSC equivalents for parts, is preparing a BOM for JLCPCB assembly, or wants to download datasheets and LCSC is available. For package cross-reference tables and BOM workflow, see the `bom` skill.
name
lcsc
description
Search LCSC Electronics for electronic components — find parts by LCSC number (Cxxxxx) or MPN, check stock/pricing, download datasheets, analyze specifications. Sister company to JLCPCB, same parts library. Sync and maintain a local datasheets directory for a KiCad project, or use batch MPN-list seeding (--mpn-list) for bulk workflows without a project. No API key needed — uses the free jlcsearch community API. Use this skill when the user mentions LCSC, JLCPCB parts library, JLCPCB assembly parts, production sourcing, Cxxxxx part numbers, needs to find LCSC equivalents for parts, is preparing a BOM for JLCPCB assembly, or wants to download datasheets and LCSC is available. For package cross-reference tables and BOM workflow, see the bom skill.
LCSC Electronics — Component Search, Datasheets & Ordering
Related Skills
Skill
Purpose
kicad
Schematic analysis — extracts MPNs for part lookup
bom
BOM management — orchestrates sourcing across distributors
jlcpcb
PCB assembly — shares the same parts library
spice
Uses LCSC parametric data for behavioral SPICE models (no auth needed)
LCSC is JLCPCB's sister company — they share the same parts library and
Cxxxxx
part numbers. Use LCSC for
production sourcing
(assembled boards from JLCPCB/PCBWay). DigiKey/Mouser are for prototyping. For BOM management and export workflows, see
bom
.
Key Differences from DigiKey/Mouser
No API key needed
— jlcsearch community API is free and open
Lower prices
— especially for passives and Chinese-manufactured ICs
JLCPCB integration
— same LCSC part numbers used in JLCPCB assembly BOMs
Direct PDF downloads
— LCSC's CDN (wmsc.lcsc.com) serves datasheets without bot protection
Low MOQ
— many parts available in quantities as low as 1
Warehouses
— Shenzhen (JS), Zhuhai (ZH), Hong Kong (HK)
Website
:
LCSC Part Numbers
Format:
Cxxxxx
(e.g.,
C14663
). This is the universal identifier across both LCSC and JLCPCB. Use it for:
Direct ordering on LCSC
BOM matching in JLCPCB assembly (see
jlcpcb
skill)
Cross-referencing between platforms
jlcsearch API Reference
The jlcsearch community API is the recommended way to search LCSC.
No authentication required.
Base URL:
General Search
GET /api/search?q=<query>&limit=20&full=true
Parameters:
q
— search query (matches MPN, LCSC code, or description keywords)
package
— optional footprint filter (e.g.,
0402
)
limit
— max results (default 100)
full
— set to
true
to include all fields (datasheet URL, specs, stock per warehouse)
Category-Specific Search
GET /resistors/list.json?search=10k+0402
GET /capacitors/list.json?search=100nF+0402
GET /microcontrollers/list.json?search=STM32
GET /voltage_regulators/list.json?search=3.3V
Response Format
Results are returned as
{"components": [...]}
. With
full=true
, each component has:
{
"lcsc"
:
14663
,
"mfr"
:
"GRM155R71C104KA88D"
,
"package"
:
"0402"
,
"description"
:
""
,
"datasheet"
:
"..."
,
"stock"
:
2751535
,
"price"
:
[
{
"qFrom"
:
1
,
"qTo"
:
9
,
"price"
:
0.0069
}
,
...
]
,
"basic"
:
0
,
"extra"
:
{
"number"
:
"C71629"
,
"mpn"
:
"GRM155R71C104KA88D"
,
"manufacturer"
:
{
"id"
:
4
,
"name"
:
"Murata Electronics"
}
,
"package"
:
"0402"
,
"description"
:
"16V 100nF X7R ±10% 0402 ..."
,
"quantity"
:
2751535
,
"whs-js"
:
1234567
,
"whs-zh"
:
567890
,
"whs-hk"
:
0
,
"moq"
:
100
,
"order_multiple"
:
100
,
"packaging"
:
"Tape & Reel (TR)"
,
"packaging_num"
:
10000
,
"datasheet"
:
{
"pdf"
:
""
}
,
"images"
:
[
{
"96x96"
:
"..."
,
"224x224"
:
"..."
,
"900x900"
:
"..."
}
]
,
"rohs"
:
true
,
"url"
:
"..."
,
"attributes"
:
{
"Capacitance"
:
"100nF"
,
"Voltage Rated"
:
"16V"
,
"Temperature Coefficient"
:
"X7R"
,
"Tolerance"
:
"±10%"
}
,
"prices"
:
[
{
"min_qty"
:
100
,
"max_qty"
:
499
,
"currency"
:
"USD"
,
"price"
:
0.0048
}
,
...
]
}
}
Key fields:
lcsc
— numeric LCSC ID (without "C" prefix)
extra.number
— full LCSC code with prefix (e.g.,
C71629
)
extra.mpn
— manufacturer part number
extra.manufacturer.name
— manufacturer
extra.datasheet.pdf
—
direct PDF URL
(wmsc.lcsc.com CDN, downloads without auth)
extra.attributes
— parametric specs (capacitance, voltage, etc.)
extra.quantity
— total stock across all warehouses
extra.whs-js
,
extra.whs-zh
,
extra.whs-hk
— stock per warehouse
basic
—
1
if JLCPCB basic part (no setup fee),
0
if extended
extra.moq
— minimum order quantity
extra.order_multiple
— must order in multiples of this
extra.rohs
— RoHS compliance (boolean)
Rate Limits
The jlcsearch API is community-run with no documented rate limits, but be respectful — use delays of 0.5s between calls.
Datasheet Download & Sync
LCSC's CDN serves datasheet PDFs directly — no bot protection, no special headers needed. This makes LCSC a reliable datasheet source alongside DigiKey.
Datasheet Directory Sync
Use
sync_datasheets_lcsc.py
to maintain a
datasheets/
directory alongside a KiCad project. Same workflow and
manifest.json
format as the DigiKey and Mouser skills.
No API key required.
python3 <skill-path>/scripts/sync_datasheets_lcsc.py <file.kicad_sch>
python3 <skill-path>/scripts/sync_datasheets_lcsc.py <file.kicad_sch> --dry-run
python3 <skill-path>/scripts/sync_datasheets_lcsc.py <file.kicad_sch> --force
python3 <skill-path>/scripts/sync_datasheets_lcsc.py <file.kicad_sch> -o ./my-datasheets
python3 <skill-path>/scripts/sync_datasheets_lcsc.py <file.kicad_sch> --parallel 3
python3 <skill-path>/scripts/sync_datasheets_lcsc.py --mpn-list mpns.txt --output ./datasheets MPN-list batch mode (KH-312) — when you have a list of MPNs but no KiCad project to point at. One MPN per line; blank lines and
comments (full-line and inline) are skipped; generic values are filtered via is_real_mpn() and de-duplicated. Output defaults to ./datasheets/ in the current working directory when --output is omitted. The script: Runs the kicad schematic analyzer to extract components, MPNs, and LCSC codes Accepts any identifier — MPN, LCSC code, or other distributor PNs from KiCad symbol properties Prefers LCSC code for search (exact match) — falls back to MPN keyword search Falls back to wmsc.lcsc.com API when jlcsearch has no results for an LCSC code (Cxxxxx) Downloads from LCSC CDN — direct PDF URLs, no bot protection Writes manifest.json manifest — same format as DigiKey/Mouser skills Verifies PDF content — checks MPN, manufacturer, and description keywords Rate-limited — 0.5s between API calls (configurable with --delay ) Saves progress incrementally — safe to interrupt Single Datasheet Download Use fetch_datasheet_lcsc.py for one-off downloads.
python3 <skill-path>/scripts/fetch_datasheet_lcsc.py --search "GRM155R71C104KA88D" -o datasheet.pdf
python3 <skill-path>/scripts/fetch_datasheet_lcsc.py --search "C14663" -o datasheet.pdf
python3 <skill-path>/scripts/fetch_datasheet_lcsc.py "https://wmsc.lcsc.com/..." -o datasheet.pdf
python3 <skill-path>/scripts/fetch_datasheet_lcsc.py --search "C14663" --json The script: OS-agnostic — uses requests → urllib → playwright fallback chain (no wget/curl) Validates PDF headers — rejects HTML error pages Falls back to alternative manufacturer sources when LCSC URL fails Exit codes : 0 = success, 1 = download failed, 2 = search/API error Dependencies : pip install requests (recommended; urllib fallback works fine for LCSC) pip install playwright && playwright install chromium (optional; rarely needed for LCSC) LCSC Official API (Requires Approval) Base URL: https://ips.lcsc.com . Requires API key + signature authentication. Contact [email protected] for access. Rarely needed — jlcsearch covers most use cases. Web Search Fallback If the jlcsearch API is unavailable, search LCSC by fetching the website directly: https://www.lcsc.com/search?q=<query> Cross-Referencing & Missing Equivalents LCSC part numbers are specific to the LCSC/JLCPCB ecosystem. Use the extra.mpn field to cross-reference on DigiKey/Mouser. When an MPN has no exact LCSC match: Search by key parameters (e.g., "100nF 0402 X7R 16V") Look for pin-compatible alternatives from Chinese manufacturers Verify specs and footprint match — pad dimensions can vary even within the same package size As a last resort, mark as "consigned" and source separately Tips basic field matters — JLCPCB basic parts have no setup fee; extended parts cost $3 each Check stock per warehouse ( whs-js , whs-zh , whs-hk ) — availability varies moq and order_multiple — many parts require minimum quantities or specific multiples Datasheet quality varies for Chinese manufacturers — cross-reference MPN on DigiKey for better docs