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Precision Sapphire Discharge Needle with Tapered Tip for Semiconductor

Name: Precision Sapphire Discharge Needle with Tapered Tip for Semiconductor
Brand: SHANGHAI FAMOUS TRADE CO.,LTD
SKU: Sapphire Discharge Needle
Price: 115.00 USD
Availability: InStock

Brand Name:	ZMSH
Model Number:	Sapphire Discharge Needle
MOQ:	25
Price:	by case
Delivery Time:	2-4 weeks
Payment Terms:	T/T

Detail Information

Product Description

Detail Information

Place of Origin:

CHINA

Certification:

rohs

Material:

Al₂O₃ Purity ≥99.99%

Dimensions:

Length 10-200mm

Crystal Orientation:

C-axis/<1120> Orientation Deviation ±0.5°

Coating Options:

UV Anti-reflection (200-400nm), IR Broadband (3-5μm), High-reflection (>98%@10.6μm)

Optical Performance:

Numerical Aperture NA 0.15-0.22 (adjustable)

Applications:

Semiconductor Manufacturing, Electronics Assembly And Packaging

Packaging Details:

package in 100-grade cleaning room

Supply Ability:

1000pcs per month

Highlight:

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Product Description

Sapphire Discharge Needles Core Definition

Precision Sapphire Discharge Needle with Tapered Tip Sapphire Crystal Rod

A sapphire discharge needle is a precision discharge component manufactured from single-crystal sapphire (Al₂O₃). Its core characteristics stem from the physical and chemical properties of sapphire:

1. Crystal Structure

Trigonal crystal system with tightly arranged atoms, providing ultra-high hardness (Mohs 9) and compressive strength (2.1 GPa).

2. Thermal Properties

Melting point of 2050°C and thermal conductivity of 23–26 W/(m·K) (parallel to the c-axis), enabling stable operation across a wide temperature range (-40°C to 300°C).

3. Electrical Properties

Dielectric constant of 9.4–11.58 and insulation strength ≥10 kV/mm, supporting high-voltage discharge (typical range: 8–12.5 kVpp).

Sapphire Discharge Needles Key Features and Advantages

1. Precision Machining Capability

Tip Precision: Guided mode growth technology ensures tip curvature radius ≤5 μm and discharge point diameter ≤10 μm, sapphire discharge needles ideal for nano-scale electrostatic elimination.
Surface Treatment: Sapphire discharge needles's ultra-precision grinding achieves surface roughness Ra ≤5 Å, minimizing arc diffusion during discharge.

2. Longevity and Reliability

Abrasion Resistance: Sapphire’s hardness is 3× that of tungsten steel, sapphire discharge needles enabling 10⁶ discharge cycles (vs. 10⁴ for conventional tungsten needles).
Chemical Inertness: Sapphire discharge needles resists dust adhesion, extending cleaning intervals to 30 days (vs. 7 days for standard materials).

3. Multi-Scenario Adaptability

Voltage Range: Sapphire discharge needles supports pulse DC (DC) and AC modes with ±0.1 kV voltage regulation precision.
Environmental Tolerance: Sapphire discharge needles operates stably in humidity 10–95% (non-condensing) and altitudes up to 5000 m.

4. Smart Integration

Real-Time Monitoring: Integrated temperature sensors (±0.5°C accuracy) and current feedback systems enable automatic shutdown during anomalies.
Remote Control: Adjustable parameters (frequency, voltage, duty cycle) via RS485 interface.

Sapphire Discharge Needles Core Applications and Technical Details

1. Semiconductor Manufacturing

Wafer Electrostatic Elimination: Sapphire discharge needles installed on lithography machine wafer stages to neutralize ±5 kV static on silicon surfaces, improving yield by 3%.
Equipment Protection: Sapphire discharge needles used in ion implanters to withstand 10¹⁵ ions/cm² high-energy particle bombardment.

2. Electronics Assembly and Packaging

PCB Electrostatic Neutralization: Sapphire discharge needles neutralizes residual charge (≤50 V) on circuit boards in SMT lines, preventing component breakdown.
Packaging Anti-Sticking: Eliminates static (surface resistance 10¹²–10¹³ Ω) on plastic films to prevent dust adhesion.

3. Medical Devices

Surgical Instruments: Sapphire scalpels (tip curvature radius 20 μm) enable precise tissue cutting with minimal thermal damage (e.g., ophthalmic microsurgery).
Endoscope Components: Withstand 134°C/30 min autoclave cycles for electrostatic shielding in gastrointestinal examinations.

4. New Energy and Automotive

Battery Production: Eliminates static (charge density ≤1 μC/m²) on lithium battery electrodes to prevent short circuits.
Charging Infrastructure: Deploys in high-voltage charging interfaces to avoid arcing (discharge current ≤10 mA).

5. Research and Defense

Laser Systems: Sapphire discharge needles acts as window material for high-power lasers, enduring 10⁶ W/cm² optical thermal loads.
Missile Radomes: Sapphire rods in guidance system optics withstand impacts ≥50 GPa.

Related product recommendations

1. Sapphire Rods Light Cone Rods Sapphire Discharge Needles Specialized for Semiconductor Equipment

2. Sapphire Light Cone Sapphire Rods Monocrystal Al₂O₃ Optical Glass Cone For Optical Sensors

Sapphire Discharge Needles Q&A

1. Q: What is a sapphire discharge needle?

A: A sapphire discharge needle is a precision electrostatic elimination component made from single-crystal sapphire (Al₂O₃), used to neutralize static electricity in industrial and electronic applications.

2. Q: How to maintain a sapphire discharge needle?

A: Regularly clean the needle tip with alcohol to remove contaminants and inspect for wear, replacing it if discharge efficiency declines.

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