Dispenser Unit for Semiconductor Die Attach | Precision Dispensing Component

Product Specifications

Technical details and manufacturing context for Dispenser Unit

Definition

A Dispenser Unit is a precision component used in automated die attach machines within the semiconductor and microelectronics assembly industry. Its primary function is to accurately dispense controlled amounts of adhesive, epoxy, or other bonding materials onto substrates or leadframes, facilitating the attachment of semiconductor dies. The unit operates by drawing material from a reservoir and expelling it through a fine nozzle, with precise control over pressure, volume, and timing. This control is often synchronized with machine vision systems to ensure positional accuracy, critical for high-yield production.

The unit is designed for integration into larger automated systems, typically as a replaceable or serviceable part. It is constructed from materials such as stainless steel, ceramic, and PTFE, which provide chemical resistance and durability. Key parameters include a dispensing volume range of 0.01–5.0 mL per shot, with a repeatability accuracy of ±1%. Operating pressure is specified at 1.0–1.6 MPa, and the unit requires a 24 V DC supply (24 ±10%) with reverse polarity protection. Power consumption ranges from 15–60 W, depending on actuation frequency. The unit operates in non-condensing environments between 5–40 °C and can be stored at -10–60 °C. Ingress protection is rated IP54–IP65 per IEC 60529, and wetted parts are made of 316L stainless steel (ASTM A240). Weight varies from 1.2–2.5 kg, and dimensions are 120×80×150 mm (L×W×H).

These specifications are typical reference ranges; actual values must be confirmed with the manufacturer for the specific model and application. The unit is not a standalone product but a component that requires proper integration, calibration, and maintenance. Verification of compliance with standards such as IEC 60529 should be performed with the supplier. Regular inspection for wear, clogging, or leakage is recommended to maintain performance. Failure to operate within specified parameters may lead to inconsistent dispensing, affecting product quality.

Working Principle

The Dispenser Unit operates by using precision pneumatic or mechanical mechanisms to draw adhesive material from a reservoir and dispense it through a fine nozzle. The dispensing process is controlled by regulating pressure, volume, and timing, often synchronized with machine vision systems for accurate placement. The unit typically includes a valve or pump mechanism that opens and closes to release precise amounts of material. The control system adjusts the dispensing parameters based on the application requirements, ensuring consistent and repeatable results. The unit is designed to handle various viscosities and materials, with wetted parts made of corrosion-resistant materials like stainless steel and ceramic.

Common Materials

Stainless steel, Ceramic, PTFE

Technical Parameters

Parameter	Typical range	Notes & selection driver
Dispensing Volume	0.01–5.0 mL	Adjustable per shot
Dispensing Accuracy	±1 %	Repeatability of dispensed volume
Supply Voltage	24 ±10% V DC	Protected against reverse polarity
Power Consumption	15–60 W	Depends on actuation frequency
Operating Temperature	5–40 °C	Non-condensing environment
Storage Temperature	-10–60 °C	Avoid extreme temperature swings
Ingress Protection	IP54–IP65	Protection against dust and water jetsIEC 60529
Material	316L	Stainless steel wetted partsASTM A240
Weight	1.2–2.5 kg	Depends on configuration
Dimensions (L×W×H)	120×80×150 mm	Compact design for tight spaces

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Dispensing Nozzle Part
Forms and directs adhesive stream onto substrate

Material: Stainless steel or ceramic
Pressure Regulator
Controls air pressure for consistent dispensing

Material: Brass or stainless steel
Material Reservoir
Stores adhesive material for dispensing

Material: PTFE or stainless steel
Dispensing Valve
Opens and closes to release the metered shot of adhesive.
Dispensing Control
Sets pressure, shot volume and timing, and syncs the shot to the vision system.

Manufacturers of Dispenser Unit

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Frequently Asked Questions

What is the dispensing volume range of this unit?

The dispensing volume is adjustable per shot, ranging from 0.01 to 5.0 mL. The exact volume depends on the application and must be set and verified according to the manufacturer's instructions.

What is the operating pressure requirement?

The operating pressure is specified as 1.0–1.6 MPa. The unit must be operated within this range to ensure proper sealing and dispensing.

What are the electrical requirements?

The unit requires a 24 V DC supply with a tolerance of ±10%. It is protected against reverse polarity. Power consumption ranges from 15 to 60 W, depending on actuation frequency.

What environmental conditions can the unit withstand?

The unit operates in non-condensing environments with temperatures between 5 and 40 °C. Storage temperature is -10 to 60 °C. It has an ingress protection rating of IP54–IP65 per IEC 60529, protecting against dust and water jets.

Data Basis

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Preliminary Technical Classification

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pressure:	0.1 to 0.5 MPa (1 to 5 bar)
flow rate:	0.1 to 10 µL/min (adjustable)
temperature:	+5°C to +40°C (operating), -10°C to +60°C (storage)
slurry concentration:	Up to 70% solids by weight

Dispenser Unit

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Reliability & Engineering Risk Analysis

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