Flux Drop-Jet System — John W. Radtke

Drop-jet head assembly

Drop-jet control module — Control module

Overview

One drop, where it's needed

Designed to control and dispense a single drop of fluid. A separate electronic module provides on/off and drop-frequency control of the drop-jet head. Liquid flux is stored in a pressurized container (1.5 to 15 psi) that supplies the head.

The system integrates into a variety of selective soldering machines and applications.

Precise application of flux to target
Compatible with many flux chemistries
Fully maintainable and serviceable
Modular; serviced without tools
Retrofits into selective soldering machines

0 – 90 Hz

Drop frequency

130 µm

Standard nozzle orifice

2 – 4 mm

Adjustable drop size

24 VDC

Power and control

Specifications

Technical detail

Dispensing

Nozzle orifice	130 µm (standard)*
Typical drop size	2 mm to 4 mm (adjustable)*
Drop frequency	0 to 90 Hz
Fluid supply	1.5 to 15 psi (pressurized container)
Head dimensions	3.25" L × 1.4" dia. (without fittings or mounting)

Control Module

Power	24 VDC, 0.75 A (user supplied)
On/off input	24 VDC
Frequency input	0–20 mA (standard)*
Dimensions	3.25" H × 5.5" W × 2.75" D
Mounting	DIN rail

* Other specifications were available on request.

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