High Precision Non Contact Piezo Jet Valve with 0.5nL Minimum Spray for IC and Sensor Packaging

Product Overview

This non contact piezo jet valve is designed for very small volume dispensing in IC and sensor packaging. It produces stable micro-drops down to 0.5nL without touching the part, making it suitable for placing adhesives, sealants, or fluids in narrow cavities and fine pads. Use this valve when you need repeatable tiny drops and low risk of nozzle marks on delicate devices.

Problem

Packaging small components often fails when glue or sealant is placed too large or when the nozzle touches the device. This causes rework, optical defects, or electrical failures in ICs and sensors.

Cause

Many dispensers either deliver too much material for tiny pads or require contact placement that disturbs small parts. Inconsistent drive timing, wrong nozzle size, or unstable pressure results in variable drop volume and placement errors.

Solution

This valve uses controlled, timed pulses and a sealed fluid path to eject micro-drops without contact. It minimizes overspray and keeps surrounding areas clean. The design supports small nozzle options and quick tuning so you can reach tight pads and keep yield high.

Application

• IC packaging: precise adhesive dots for die attach, underfill start points, and small seals.
• Sensor modules: tiny adhesive spots on sensor pads and glass windows.
• MEMS assembly: non contact placement in very tight cavities.
• R&D and pilot lines: validate small-volume adhesives with minimal sample use.

How It Works

Conclusion: stable micro-drops come from timed piezo pulses and steady fluid feed. A short, fast pulse moves a measured volume through the nozzle and away from the part surface. Pulse width and amplitude set droplet size while inlet pressure and nozzle geometry keep the meniscus stable. For best results, tune pulse and pressure with a short trial using your fluid.

How To Choose 

Conclusion: match valve selection to your droplet size, fluid viscosity, and mounting limits.

Steps:

1. Confirm required droplet volume and select the closest nozzle diameter.
2. Provide fluid viscosity at your process temperature; request a sample test if viscosity is high.
3. Check required cycle rate and ensure the valve frequency meets throughput needs.
4. Choose wetted material based on fluid chemistry (316L general; PTFE or ceramic if needed).
5. Verify mounting flange and clearance for your tool head to avoid collisions.
6. Plan a short tuning run to set pulse width, amplitude, and inlet pressure before full production.

Company Capability and Trust

Mingseal Technology supplies precision dispensing systems and offers application testing, tuning support, and spare parts. We provide test reports, dimension drawings, and material certificates on request. For sample runs or engineering help, contact our applications team.

FAQ 

Q1: Can this valve produce 0.5nL reliably in production?
A1: Yes. With correct nozzle selection, stable pressure, and tuning of pulse settings, 0.5 nL shots are achievable. A short validation run is recommended.

Q2: Which fluids can it handle for IC packaging?
A2: It handles common adhesives and sealants used in IC and sensor packaging up to the listed viscosity. Send your fluid spec sheet for a compatibility check and sample test.

Q3: How do I avoid nozzle marks on delicate parts?
A3: Use non contact placement, set a short stand-off distance, and confirm mounting offset. We can provide mounting drawings and setup guidance.

Q4: How often should the nozzle be cleaned?
A4: Cleaning interval depends on fluid solids and run time. For low-solids fluids, routine inspection per shift is common; filled adhesives require more frequent cleaning.

Q5: Do you provide sample testing with our parts?
A5: Yes. Send your fluid data and a photo or drawing of the part. We will run a sample test and return results and recommended settings.