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ST0850 Zoom Stereo Microscope for PCB Electronics Inspection

ST0850 Zoom Stereo Microscope for PCB Electronics Inspection

ST0850 is a zoom stereo microscope from Nanjing AMADA Instrument designed for PCB electronics inspection, precision assembly, and bench-level component handling. The model offers a 0.8X–5X zoom range with a 6.3:1 ratio, 115 mm working distance, and optional illumination paths. It supports binocular or trinocular viewing heads with 45° inclination and interchangeable wide field eyepieces. Standard configuration includes LED incident and transmitted illumination with a 125 mm round glass plate.

  • 6.3:1 zoom ratio with 0.8X–5X range for flexible magnification in electronics inspection
  • 115 mm working distance on standard 1X path for handling PCBs and small components
  • Optional LED incident, transmitted, and ring light illumination for consistent lighting
  • Selectable binocular or trinocular viewing heads with 45° inclined design for ergonomic use
  • Interchangeable wide field eyepieces (WF10X/F.N.22mm, WF15X/F.N.16mm, WF20X/F.N.12mm) for field of view matching
  • Auxiliary objectives (0.5X, 0.75X, 2X) available to extend working distance or magnification
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Technical features

  • Zoom range 0.8X–5X, zoom ratio 6.3:1
  • Working distance 115 mm on standard 1X objective path
  • Interpupillary distance adjustable 52–75 mm
  • Stereo binocular or trinocular viewing head inclined at 45°
  • Standard wide field eyepiece WF10X/F.N.22mm; optional WF15X/F.N.16mm and WF20X/F.N.12mm
  • Auxiliary objectives available: 0.5X, 0.75X, 2X
  • Illumination options: LED incident, LED transmitted, LED ring light
  • Included round glass plate (ø125mm) with white and black side

Who it is for

  • Electronics manufacturers sourcing inspection tools for production lines
  • Importers specifying stereo microscopes for PCB and micro-assembly applications
  • Distributors building a catalog of benchtop microscopes for industrial use

Specifications

ModelST0850-L4 / ST0850-L5 / ST0850-TL4 / ST0850-TL5
Zoom Range0.8X–5X
Zoom Ratio6.3:1
Working Distance115 mm (1X)
Viewing HeadStereo binocular (inclined 45°) or trinocular (inclined 45°)
EyepieceWF10X/F.N.22mm (standard), WF15X/F.N.16mm, WF20X/F.N.12mm (optional)
Auxiliary Objectives0.5X, 0.75X, 2X (optional)
IlluminationLED incident, LED transmitted, LED ring light (optional)
Stage Plateø125mm round glass plate with white and black side (standard)

Use guide

  • Select L4 or L5 for binocular use; TL4 or TL5 for trinocular with camera output
  • Use WF10X/F.N.22mm for standard field of view; switch to WF15X/F.N.16mm or WF20X/F.N.12mm for higher magnification
  • Add 0.5X or 0.75X objective when greater working distance is needed for tall components
  • Use 2X objective when higher magnification is required at the expense of working distance
  • Choose LED incident for surface details, transmitted for transparent materials, ring light for even illumination

FAQ

What is the working distance on the standard configuration?
115 mm with the built-in 1X objective path. Auxiliary objectives change this: 0.5X increases it, 2X reduces it.
Can I add a camera?
Yes. The trinocular versions (TL4, TL5) support camera attachment via the third optical path.
What illumination options are available?
Standard configuration has no illumination. Optional: LED incident, LED transmitted, and LED ring light.
What eyepieces are available?
Standard: WF10X/F.N.22mm. Optional: WF15X/F.N.16mm and WF20X/F.N.12mm.
What is the zoom ratio?
6.3:1, with a zoom range of 0.8X–5X.
Can I use auxiliary objectives?
Yes. Optional 0.5X, 0.75X, and 2X objectives are available to adjust working distance and magnification.
Who manufactures this model?
Nanjing AMADA Instrument Co., Ltd. (bestamada.com), Nanjing, Jiangsu, China.

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