Home / Products / RF Transceiver ICs / Silicon Labs / SI4421-A1-FTR

Silicon Labs SI4421-A1-FTR

IC RF TXRX ISM<1GHZ 16TSSOP

Answer first: this page is a purchasing reference for the exact part number SI4421-A1-FTR from Silicon Labs. Use it to start datasheet, package, manufacturer and RFQ verification; do not treat page text as a live stock, price or lead-time promise.

Manufacturer: Silicon Labs Category: RF Transceiver ICs Part number: SI4421-A1-FTR Package: 16-TSSOP (0.173", 4.40mm Width) RFQ verification required

Key Parameters

Part NumberSI4421-A1-FTR
ManufacturerSilicon Labs
CategoryRF Transceiver ICs
package16-TSSOP (0.173", 4.40mm Width)
series-
packagingTape & Reel (TR)
product statusObsolete
param 1Not Verified
param 2TxRx Only
param 3General ISM < 1GHz
param 4-
param 5FSK
param 6315MHz, 434MHz, 868MHz, 915MHz
param 7256kbps
param 87dbm
param 9-110dBm
param 10-
param 11SPI
param 12-
param 132.2V ~ 3.8V
param 1411mA ~ 13mA
param 1515mA ~ 24mA
param 16-40°C ~ 85°C
param 17-
param 18-
param 19Surface Mount
param 2016-TSSOP

Parameters are provided for purchasing review. Confirm package, suffix, lifecycle status, datasheet revision and approved substitutes before ordering.

How to Verify SI4421-A1-FTR Before Ordering

Datasheet and parameter checks

  • Confirm the full manufacturer part number, not only a shortened search keyword.
  • Compare package, pinout, dimensions, voltage or rating fields, temperature range and compliance wording against the released BOM.
  • Use the manufacturer datasheet or drawing for electrical and mechanical limits before approving a substitute.

RFQ fields SENICO needs

  • Send exact part number, manufacturer, quantity, target delivery date, destination and required packaging.
  • State whether alternates are allowed, and list any date-code, certificate, traceability or customer AVL requirement.
  • Keep exact stock, factory lead time and proposed alternatives in separate quote lanes.

For SI4421-A1-FTR, SENICO recommends checking manufacturer marking, package, date code, requested quantity, approved vendor requirements and replacement risk before issuing a purchase order. If a supplier suggests an equivalent, record the changed fields and approval owner before comparing price.

We do not treat displayed data as a real-time stock or price commitment. The RFQ reply is the verified commercial reference.

Related buying guides: stock and lead-time verification, equivalent IC comparison, and BOM RFQ preparation.