Si4432-B1-FMR

Identity

Manufacturer: SKYWORKS/SILICON LABS(芯科)
Model / MPN: Si4432-B1-FMR
LCSC: C409765
Category: sub-ghz-transceiver
Description: Si4432-B1-FMR 1.8V~~3.6V SPI Frequency Range:240MHz~~930MHz Frequency Range:240MHz~~930MHz Interface:SPI Voltage - Supply:1.8V~~3.6V Voltage - Supply:1.8V~3.6V Applications:ISM Output Power:20dBm Data Rate:256Kbps Current Of Transmitting:85mA Sensitivity:-121dBm Receive Current:18.5mA O
Source: EasyEDA/JLC verified common component seed
Project designators: Not project-specific
Project quantity per board: Not project-specific

Capabilities

spi: interface

Package And Footprint

Package / footprint name: QFN-20-EP(4x4)
Pin count: 20
EasyEDA symbol UUID: 6e4f6d2cf08c4485b9ebe172ff8823a1
EasyEDA footprint UUID: cdca60e76509425eaa54fccf99752fc7
EasyEDA device UUID: cad66bd63c7c4e089b54a6cbea9de300
EasyEDA library UUID: 0819f05c4eef4c71ace90d822a990e87

Power And Operating Modes

Active current: EasyEDA property: 18.5mA.
Sleep / standby current: Not characterized in seed; extract sleep/standby current from datasheet tables.
Supply rails: EasyEDA property: 1.8V~3.6V.
Notes: Seed values are search hints only. Verify power modes, rail limits, startup requirements, and reference design passives from the datasheet.

Procurement Classification

JLC class: Extended Part
JLC note / assembly basis: EasyEDA/JLC verified common connectivity, positioning, and RF interface seed
Assembly status: jlc_extended
Price-break table: Not captured in seed. Store only timestamped price-break snapshots when intentionally refreshed.
Live stock: intentionally not stored as durable selection data; refresh externally before ordering.

Datasheet And Links

Datasheet / product URL: https://item.szlcsc.com/datasheet/Si4432-B1-FMR/400110.html
Product URL: https://item.szlcsc.com/datasheet/Si4432-B1-FMR/400110.html
Datasheet-derived notes: Not extracted yet. Use PDF extraction to fill power modes, absolute maximums, pin functions, package variants, and reference design requirements.

Selection Notes

Good for: reuse when package, electrical ratings, footprint, and assembly class match the project constraints
Avoid when: Not captured yet.
Known layout constraints: Verify package land pattern, decoupling requirements, thermal pad, RF keepouts, crystal routing, and boot straps from the datasheet.
Equivalent search hints: match category sub-ghz-transceiver, interfaces spi, package QFN-20-EP(4x4), and EasyEDA footprint UUID cdca60e76509425eaa54fccf99752fc7.

Search Keywords

seed:common-connectivity-positioning, source:easyeda-bridge, iot, common-pcb, si4432, silicon-labs, sub-ghz, ism, 433mhz, sub-ghz-transceiver, qfn-20-ep-4x4, jlc-extended, spi, jlc_extended, jlc-note:easyeda-jlc-verified-common-connectivity-positioning-and-rf-interface-seed, power