RF/IF and RFID
Rf If And Rfid covers the parts that sit between an antenna and the digital baseband: amplifiers, mixers, attenuators, baluns, couplers, front-end modules, receivers, modulators and demodulators, circulators, antennas themselves, and a long tail of misc RF ICs. Some buyers land here looking for a single LNA for a 2.4 GHz design; others are sourcing a full signal chain for a cellular, Wi-Fi, GNSS, or sub-GHz radio product. The category also covers RFID reader and transponder parts, which share a lot of the same sourcing headaches. What engineers actually check before ordering tends to be the same short list. Frequency range and gain first, then noise figure for LNAs, P1dB and IP3 for anything in the transmit path, and whether the part comes in the package their layout was built around. Swapping a QFN for a slightly different footprint mid-project is a real cost, so package and pinout matter as much as headline specs. Buyers also care about evaluation boards and reference designs, because RF parts rarely work first time without them. On the procurement side, the honest trade-off is price against traceability. RF ICs from names like Analog Devices, Qorvo, Skyworks, and NXP are among the most counterfeited parts in the independent market, and a fake LNA can pass a basic bench check while failing at temperature or over time. Obsolescence is the other recurring problem: RF lines get end-of-lifed quickly as vendors chase new standards, so last-time buys and hard-to-find date codes are common requests here. Lead times on franchised stock for popular front-end modules can stretch past 20 weeks, which pushes many buyers to the open market with proper testing. Stock and date codes for this category move daily. You can check current availability or send a bill of materials for a quote at icxing.com.
Frequently Asked Questions
The part I need is obsolete. What are my options?
First check if the manufacturer offers a recommended drop-in or functional replacement, since RF vendors usually publish migration guides when they EOL a line. If not, leftover franchised stock and factory-sealed reels from the open market are common, but insist on date codes and original packaging. A re-design around a current part is sometimes cheaper than a risky last-time buy.
Does package type matter when substituting RF parts?
Yes, more than in most categories. RF performance depends on the exact footprint, ground paddle, and layout, so even a pin-compatible part in a different package can detune the matching network. Confirm the package code and check the vendor's reference layout before committing to a substitute.
What should buyers check when sourcing RF IF and RFID components for stable supply and consistent performance?
Confirm the exact part number and revision, required frequency range and key specs (gain, NF/P1dB/insertion loss, isolation, VSWR, output power, sensitivity, and tag/read range where applicable), package/footprint and pinout compatibility, and environmental ratings (temperature range, moisture sensitivity level, and any needed qualifications). For procurement risk control, verify lifecycle status and PCN/EOL notices, authorized traceability and date/lot codes, MOQ/lead time and buffer stock options, and request supporting documents such as datasheets, RoHS/REACH, and reliability reports; for critical builds, add incoming inspection or sample-based RF verification to prevent performance drift across lots.
- classification：
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- Attenuators (28)
- RF Amplifiers (122)
- RF Demodulators (17)
- RF Mixers (41)
- RF Modulators (4)
- RF Receivers (29)
- RF Switches (53)
- RF Transceiver ICs (15)
- RF Transmitters (7)
