20 pcs 50/51 sensitive microphones, 7 mm and 9 mm sizes Product overview A pack of 20 replacement microphones specified as model 50 and 51 with sensitivity in 7 mm and 9 mm form factors. Designed for audio capture and use, these microphone elements provide consistent pickup for compact electronic devices and DIY projects. Key benefits Reliable replacement parts for repairs: Supply of 20 identical microphone units simplifies repairs and maintenance for multiple devices or production runs. Improved audio pickup: sensitivity helps capture clear voice and ambient sound with reliable responsiveness in common lowvolume applications. Compact sizes for easy integration: Available in 7 mm and 9 mm diameters to fit standard microphone mounts and PCB footprints used in many small devices. Cost effective for bulk needs: Multiple units in one pack reduce the need to source single components repeatedly. What it does and how it solves problems Restores device functionality: Use these microphones to worn or damaged elements and bring devices back to working audio capture condition. Simplifies inventory for repairs: Having 20 pieces on hand reduces downtime and speeds up service workflows for workshops and technicians. Supports consistent sound pickup: The sensitivity specification helps ensure repeatable audio capture across units, reducing variability between replacements. Important attributes Function: Microphone element for audio capture and replacement applications. Models: 50 and 51 specified variants included in the pack. Size: 7 mm and 9 mm diameter options to match common device mounting and PCB hole sizes. Quantity: 20 pieces per pack. Performance: sensitivity for effective sound detection in compact applications. Compatibility Suitable for devices and assemblies that accept 7 mm or 9 mm microphone elements and that use model 50 or 51 style components. Commonly used in portable electronics, headsets, intercoms, and small audio modules where compact, sensitive microphones are required. Use scenarios workshop: a damaged microphone in a batch of headsets or portable recorders during routine service work. Product assembly: Install these sensitivity microphone elements on PCBs for prototype builds or small production runs that require 7 mm or 9 mm parts. DIY electronics and hobby projects: Add reliable audio input to custom voice recorders, hobby communication devices, or maker projects that need compact microphone elements. Packaging and handling Pack contains 20 individual microphone units. Handle with standard static precautions when soldering or mounting to PCBs. Verify size and mounting orientation before installation to ensure correct fit. This product provides a practical supply of 50/51 sensitive microphone elements in 7 mm and 9 mm sizes, suitable for repairs, assembly, and prototyping where consistent audio capture is needed.