114640 OG New PA IC For Samsung A10

The 114640 is a power amplifier IC pulled straight from the RF front end of the Samsung A10 and J4 series boards. On a phone board this small, the PA sits between the baseband processor and the antenna switch, and its only job is to take the weak signal generated by the modem and push it up to a level strong enough to reach the tower. When this chip goes bad, the phone doesn't die completely — it just talks to the network badly, and that's exactly why it's easy to misdiagnose without board-level experience.You'll usually land on this IC after a phone comes in with a network issue that survives a flash. Software marna does nothing because the fault sits in hardware, not firmware. Typical bench signs include no signal or "searching" showing up permanently in the status bar, signal bars that jump between full and zero, calls that connect but drop within seconds, mobile data that won't hold a connection even on a strong network, and signal that got noticeably worse right after a drop or a jump in the water. On a shop bench, a quick check against a known-good A10 or J415 board using a multimeter on the PA's supply and control lines, combined with a look under the microscope for cracked solder balls or corrosion, narrows things down fast before you commit to a reflow.This is an OG unit, meaning it's a genuine pulled chip taken from original Samsung boards rather than a copy-market clone, tested before listing. In the Pakistan mobile repair market, OG-grade PA and power ICs get preferred over copy chips because the failure rate after fitting drops sharply, and you're not stuck doing a warranty rework on the same board a week later. A clone PA IC will sometimes take a signal and pass a basic call test but choke under load, which shows up as intermittent network drop under real-world use rather than on a static bench test — that's the exact complaint that keeps customers coming back to a bad repair.Fitting the 114640 is a standard reballing job for anyone running a repair bench regularly. Strip the old chip with hot air at a controlled temperature, clean the pads on the board with flux and braid, reball the new IC, and reflow with even heat across the footprint. Rushing the reflow or running the air gun too hot is the most common reason a fresh PA IC still shows a network fault after fitting — the ball grid needs even, gradual heat, not a fast blast that leaves cold joints on one side of the package. A trinocular microscope makes checking the pads before and after reflow far more reliable than eyeballing it under a loupe, especially given how tight the ball pitch is on a chip this size.Stock this one alongside your J4 Plus and A10 charging ICs and small signal parts — boards that come in for network complaints often get checked for both PA and antenna switch faults in the same visit, so having both on the shelf saves a second parts run mid-repair.