RF4 RF-FT33 Carbon Fiber PCB Holder Fixture

Carbon Fiber PCB Holder Built for Chip-Level Rework

Chip-level repair fails at the clamp before it fails at the iron. A board that shifts half a millimetre during hot air work drags a lifted CPU across its own pads, and the job turns into a pad repair. The RF4 RF-FT33 is a carbon fiber PCB holder that RF4 designed for exactly this stage of the workflow: holding a phone motherboard, a separated board layer, or a bare IC dead still while you heat, lift, clean, and reseat components. RF4 rates the carbon fiber plate as high-temperature resistant, so it keeps its shape next to a hot air nozzle instead of warping like cheap plastic frames.

Three Clamp Heads, One Frame

The RF-FT33 gives you three clamping ports on one plate. Universal clamps grip full motherboards by their edges. Square jaws centre a CPU or SoC. Rectangular jaws take NAND, eMMC and other storage chips, the parts RF4’s own graphic calls “hard disk” ICs. Each head sits on a spring-loaded rail, so the jaws close on the part with even tension and release with one push.

The main span opens from 12 mm to 99 mm. The secondary span measures 115 mm. That range covers narrow sub-boards, full-length phone boards, and single chips without swapping fixtures. Knurled knobs under the plate let you set position with one hand while the other holds the board.

The precise card slots matter more than they look. They seat the part square to the rails, so a CPU sits level before you apply heat. A level chip heats evenly, lifts evenly, and leaves the pads intact. RF4 describes the clamping as high-precision and gentle on the chip, which is what you want when the part on the jaws is the customer’s original CPU and no replacement exists in the local market. Tighten only until the part stops moving; the spring rail does the rest.

Where the RF-FT33 Fits in Your Repair Workflow

Most board-level faults on a dead phone, a hang on logo unit, or a phone with a charging issue or network issue end at the same place: a component comes off. The RF-FT33 sits at that removal and rework stage.

A typical sequence runs like this. Clamp the board in the universal heads. Soften the underfill with your hot air station. Lift the CPU or NAND with a blade. Move the bare chip into the square or rectangular jaws. Clean the old glue and solder off the chip and the board, then reball with your reballing kit and stencil. The board stays clamped through every step, so you never re-align it.

Separated layers of stacked logic boards follow the same routine. Clamp the narrow layer, clean the interposer pads, and keep your hands free for the soldering station and flux. Jumper lagana on a damaged trace also gets easier with the board locked flat under the microscope.

Carbon Fiber Material and Bench Setup

RF4 builds the plate from carbon fiber for three stated reasons: high strength, low density, and good corrosion resistance alongside heat resistance. In practice that means a light frame that stays flat, ignores flux residue and cleaning solvents, and holds its jaw alignment after months of daily heat cycles.

Pair the RF-FT33 with the rest of your rework bench. A hot air station and soldering station handle the heat. Reballing kits and stencils handle the rebuild. An RF4 microscope is the logical upgrade once your work moves to finer BGA packages, and this fixture sits flat on the stage so the board stays in focus. Browse our PCB Holders category for other RF4 fixtures if you need a dedicated tool for a single chip size.

For any technician doing regular IC change karna work, a dependable carbon fiber PCB holder is basic infrastructure. The RF-FT33 gives you a motherboard fixture for chip removal and an IC clamping fixture in one frame, with clamp heads matched to the parts you actually lift every day.