Others & Excess Inventory

Crimp terminals allow the wires to be easily connected to screw terminals, fast-on type terminals, wire splices and various types of combinations.When selecting terminals for connecting wire or cable, you must know the size and the gauge of the type of wire/cable being connected as well as the size and the shape of the mechanical connector. For example: 12-10 Gauge Wire and 5/16" (M8) Stud-type hole.

As a high-frequency spring test probe manufacturer, Chunglai CPM has been involved in the industrial field of spring loaded test probes for more than 25 years. High-frequency test probes are widely applied in printed circuit boards, mounting circuit boards, semiconductors, online simulators, wire harness testers, etc. CPM offers high-quality high-frequency test probes to meet and enhance our clients' testing requirements of high-frequency signals as well as providing stable, low signal attenuation and integrated consistency in their product testing. Chunglai CPM is a professional spring test probe manufacturer. Our various spring loaded test probes have been provided to world since 1996.

CPM provides a series of semiconductor test probe products. Our products offer high-performance compliance, extremely low and stable DC resistance. The products are developed specifically for semiconductor testing and can be applied with various sockets for examinations. The testing factories can ensure the comprehensive inspections of the connections among electrical parts on ICs before the shipment by changing the types of contact probes based on the features of testing objectives. Materials and finishes: 1. Plunger-Top BeCu / Au Plated 2. Plunger-Bottom BeCu / Au Plated 3. Barrel P.B. / Au Plated 4. Spring Music Wire / Au Plated Mechanical: 1. Spring Force 11grams @0.65mm 2. Full Travel 1.0mm 3. Recommend Travel 0.65mm 4. Mechanical Life 50K Electrical: 1. Current Rating 0.3A 2. Self Inductance 1.15nH 3. Capacitance 1.38pF

CPM provides a series of semiconductor test probe products. Our products offer high-performance compliance, extremely low and stable DC resistance. The products are developed specifically for semiconductor testing and can be applied with various sockets for examinations. The testing factories can ensure the comprehensive inspections of the connections among electrical parts on ICs before the shipment by changing the types of contact probes based on the features of testing objectives. Materials and finishes: 1. Plunger-Top: Pd Alloy 2. Plunger-Bottom: Pd Alloy 3. Barrel: P.B. / Au Plated 4. Spring: Music Wire / Au Plated Mechanical: 1. Spring Force: 4grams @0.35mm 2. Full Travel: 0.5mm 3. Recommend Travel: 0.35mm 4. Mechanical Life: 50K Electrical: 1. Current Rating: 0.3A 2. Contact Resistance: <200mΩ

The loaded board test probe is applied for examining the loaded circuit boards. The common testing methods for loaded boards are ICT (In-Circuit Test) and FCT (Function Test). Both methods examine the performance of components and circuit connections to detect the defective components during production. ICT and FCT ensure the loaded circuit boards’ normal operation through assessing connection performance of the testing components at the replicated environment of the future application field and controlling the electrical performance of the components to assess the comprehensive connection of the circuit. Specification: 1. Recommended min. center: 4.2(.165") 2. Full travel: 10(0.393" ) 3. Current rating: 10A 4. Contact resistance: 50mΩ Materials and finishes: 1. Plunger: Brass, Au plated 2. Barrel: Brass, Ni plated 3. Spring: Stainless

The loaded board test probe is applied for examining the loaded circuit boards. The common testing methods for loaded boards are ICT (In-Circuit Test) and FCT (Function Test). Both methods examine the performance of components and circuit connections to detect the defective components during production. ICT and FCT ensure the loaded circuit boards’ normal operation through assessing connection performance of the testing components at the replicated environment of the future application field and controlling the electrical performance of the components to assess the comprehensive connection of the circuit. Specification: 1. Recommended min. center: 3.0(.118") 2. Full travel: 10(0.393" ) 3. Current rating: 8A 4. Contact resistance: 50mΩ Materials and finishes: 1. Plunger: Brass, Au plated 2. Barrel: Brass, Ni plated 3. Spring: Stainless

The bare board test probe is used for bare board (blank version) testing. To check the operation of a PCB circuit, the test probe is generally applied with the receptacle as the conduction confirmation and inspection of a circuit substrate to examine the fixture, analyze the completeness of the circuit, and inspect specification requirements of the circuit footprint, to ensure proper function of various circuits on PCBs. Specification: 1. Recommended min. center: 2.54 (0.1") 2. Full travel: 4.2(0.165" ) / 2.54(0.1" ) 3. Current rating: 3A 4. Contact resistance: 30mΩ 5. Spring force: 150g Materials and finishes: 1. Plunger: Sk4 / PhBr / NI plated 2. Barrel: Brass , Gold plated 3. Spring: Stainless Steel

The bare board test probe is used for bare board (blank version) testing. To check the operation of a PCB circuit, the test probe is generally applied with the receptacle as the conduction confirmation and inspection of a circuit substrate to examine the fixture, analyze the completeness of the circuit, and inspect specification requirements of the circuit footprint, to ensure proper function of various circuits on PCBs. Specification: 1. Recommended min. center: 1.27 (.050") 2. Full travel: 2.54 (0.1") 3. Current rating: 1.5A 4. Contact resistance: 70mΩ 5. Spring force: 30g / 60g / 80g / 120g Materials and finishes: 1. Plunger: Sk4 / PhBr / NI plated 2. Barrel: Phosphor bronze, Gold plated 3. Spring: Stainless Steel

Optical laborers select high-quality optical glasses, including N-BK7, Fused Silica and sapphire. Through manual and precision instrument processing, optical domes for harsh environments are produced. Optical glass domes are corrosion resistant and high-pressure resistant. They are often used in underwater photography and underwater detection, meterological station measurement and military missiles, as a protective cover to protect sensitive sensors and detection equipment. N-BK7 Domes N-BK7 has good transmittance (400nm-1550nm) in the visible and near-infrared spectrum. N-BK7 is a common optical material with low cost and high performance. The refractive index is highly consistent. There are fewer bubbles and streaks in N-BK7. N-BK7 domes are used for solar pyrgeometers to protect the detector from rain and snow. Besides, they prevent harsh environments from affecting the sensitivity of the detector. In addition to the commonly used N-BK7 Domes, RZ Optics Co., Ltd. also produces optical domes made of fused silica and sapphire. Fused Silica Domes Fused silica is often used in the ultraviolet spectrum, between 185-2500nm, with good transmittance. Fused silica has high chemical purity, corrosion resistance and high mechanical properties. It withstands temperature changes. It is not easy to deliquesce. Fused silica domes are used as a protective cover for underwater detectors and underwater robots to protect their optical imaging systems. In addition, high-precision optical domes hardly affect the imaging effect of underwater detection equipment. Sapphire Domes Sapphire is a stable infrared material, anti-corrosion and anti-deliquesce. Under the same thickness, the performance of sapphire is better than optical glass and quartz glass, but the price is slightly more expensive. Sapphire domes are often used as a protective cover for deep-sea optical imaging systems and guided missiles due to its stable chemical properties, strong pressure resistance and better capabilities of transmission. RZ Optics Co., Ltd. produces custom optical glass domes, according to your requirements. We strictly control the parameters of optical glass domes to ensure the precise design of each batch of custom optical glass domes. For more information, please contact us.

RZ Optics Co., Ltd. provides custom optical domes that meet applications of customers. Our company produces optical domes made of optical glass, quartz glass, sapphire and silicon. Our company specializes in processing optical domes for deep-sea exploration, underwater exploration and meteorological exploration. Optical domes produced by our company are used as a window for underwater cameras and underwater robots. They are resistant to seawater corrosion and high pressure. They are also used for meteorological pyrgeometers as protective covers. RZ Optics Co., Ltd. provides optical glass domes with commercial quality and high precision quality, including N-BK7 domes, Fused Silica domes, Sapphire domes and Silicon domes. The diameter of custom optical glass domes can be 15-280mm. The highest accuracy of concentricity can be less than 0.02mm. The highest accuracy of surface quality can be 40-20. How can you get custom optical domes? Please send us design drawings or custom parameters, including diameter, optical material and surface quality. Don't forget to add the requirement of quantities and lead time. Of course, the simplest way is direct to contact us for more information. N-BK7 Domes N-BK7 has good transmittance (400nm-1550nm) in the visible and near-infrared spectrum. N-BK7 is a common optical material with low cost and high performance. The refractive index is highly consistent. There are fewer bubbles and streaks in N-BK7. N-BK7 domes are used for solar pyrgeometers to protect the detector from rain and snow. Besides, they prevent harsh environments from affecting the sensitivity of the detector. Fused Silica Domes Fused silica is often used in the ultraviolet spectrum, between 185-2500nm, with good transmittance. Fused silica has high chemical purity, corrosion resistance and high mechanical properties. It withstands temperature changes. It is not easy to deliquesce. Fused silica domes are used as a protective cover for underwater detectors and underwater robots to protect their optical imaging systems. In addition, high-precision optical domes hardly affect the imaging effect of underwater detection equipment.  Sapphire Domes Sapphire is a stable infrared material, anti-corrosion and anti-deliquesce. Under the same thickness, the performance of sapphire is better than optical glass and quartz glass, but the price is slightly more expensive. Sapphire domes are often used as a protective cover for deep-sea optical imaging systems and guided missiles due to its stable chemical properties, strong pressure resistance and better capabilities of transmission.

The biconvex lens is a convergent lens with two outwardly curved surfaces, which are symmetrical. Its radius of curvature is equal. The spherical aberration, coma and distortion of biconvex lenses reach the minimum. In addition to controlling laser beams in lasers, biconvex lenses are also used for optical imaging systems or other optical instruments. N-BK7 Bi-Convex Lenses N-BK7 (Equivalent Material CDGM H-K9L) is crown glass with a transmission range of visible light and near-infrared spectrum (350nm-2000nm). N-BK7 possesses excellent optical, mechanical and chemical properties and is cost- effective. N-BK7 double convex lenses are often used in various optical imaging systems. Fused Silica Bi-Convex Lenses Between 185-2500nm, fused silica biconvex lenses have good transmittance. Fused silica has stable chemical properties, high-temperature resistance, low laser damage threshold. It is suitable for laser optical systems. Silicon Bi-Convex Lenses Silicon has metallic luster and is blocked in the visible light band. It has good transmittance in the infrared band (3-5μm). As a commonly used infrared optical material, silicon has high refractive index and small dispersion. Silicon lenses are widely used in infrared missile optical systems.

Plano-convex lenses are positive focal length elements with one spherical surface and one flat surface. These lenses are designed for infinite conjugate (parallel light) use or simple imaging in non-critical applications. These optics are ideal for general purpose focusing elements. Our lenses are ideal for a variety of applications, from industrial, robotics, pharmaceutical to defense. Esco manufactures plano-convex lenses using S1-UV grade fused silica, G1 fused silica, commercial grade and BK7 optical glass. Each optic is pitch polished to provide good surface quality and excellent low-cost imaging performance for a wide range of light sources. When plano convex lenses are used for laser cutting, they are best suited for high-turnover cutting applications and when cutting thick materials. In these cases, the plano-convex lens provides a larger cut width, which allows the laser's oxygen-assisted access to cut and aid in the cut. Plano convex lenses also provide greater depth of field, which helps create tapered edges.

Plano-Concave Lenses have edges that are thicker than the center and flat on one side. Plano-concave lenses are used to expand a light beam or increase the focal length in an optical system. They are commonly used for beam expansion of high peak power pulsed lasers. The beam incident on the concave surface will be focused to a point outside the instrument. Unwanted air heating and ionization at the focal point may accompany mode disruption or material damage. To avoid this problem, the input lens should be inverted so that the concave surface is not facing the parallel beam. Material selection: optical glass, laser crystal, fused silica, anti- radiation glass, infrared and ultraviolet materials, metal materials Strict dimensional control standards custom coating Wide selection of RZ spherical lenses made of N-BK7, UVFS or CaF2 optical materials, spherical lenses made of N-BK7, UVFS or S-LAH64 optical materials, cylinders and cones (shafts) made of N-BK7 and UVFS cone) lens. The lens forms are plano-convex, plano-concave, double-convex, double- concave, plano-convex cylinder and plano-concave cylinder. Focal lengths vary from -5000 to +10000 mm. Other specific materials, sizes and anti-reflective (AR) coated lenses are available upon request. Factory Standard Shape: Plano-Concave Diameter Tolerance: ± 0.05mm Thickness Tolerance: ± 0.05mm Radius: ± 0.3% Focal Length Tolerance: ± 1% Surface Quality: 40-20 Scratch-Dig(After Coating) Surface Flatness: λ/4 @633 nm Centration: < 3 arc minutes Clear Aperture: > 95% of central dimension

With 10 + Years of Experience in The Production of Safety Protection Products. High Adsorption Capacity, 10-25 Times of Self Weight. Can Be Reused to Save Money. Absorbent Various Oil, Only Absorb Oil but Not Water, Fast Oil Absorbent, Good oil retention,Reused, Melt Blown Absorbent Material, Keep Floating Water Surface After Absorbing, Oil Spill Absorbent Control, Apply to Land, Water Surface.