leadframes & sensor inserts
Built for precise positioning, electrical connection, and integration into molded or encapsulated assemblies.
Gromax manufactures precision stamped conductive leadframes and metal inserts used to support, position, and electrically connect semiconductor devices, sensors, electronic components, and molded assemblies.
We review material, strip thickness, lead geometry, pitch, coplanarity, plating, carrier design, molding conditions, and downstream assembly requirements to support repeatable production.
part examples
Semiconductor Leadframes
Precision stamped conductive frames that support die or package features and provide electrical paths from internal devices to external leads.
Sensor Leadframes
Stamped lead structures used to position sensing elements and carry electrical signals through molded or encapsulated sensor assemblies.
Insert-Molded Terminal Frames
Connected terminal arrays held in a carrier configuration for controlled placement during molding, then separated or trimmed as required.
Connector & Header Inserts
Stamped conductive inserts used to create fixed electrical interfaces inside molded connector, header, or control housings.
Overmolded Sensor Inserts
Metal terminals, tabs, or frames designed to remain accurately positioned while plastic is molded around selected sections.
Carrier-Strip Contact Arrays
Multiple stamped conductive features maintained on a common strip or frame for plating, molding, automated handling, assembly, or subsequent cutoff.
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part design essentials
Reliable leadframe and insert performance depends on how fine stamped geometry, material properties, plating, carrier design, and the molding or encapsulation process work together.
Lead Width, Pitch & Position
Lead spacing, feature width, straightness, and positional accuracy must suit the device, molding tool, connector interface, or downstream assembly.
Material & Thickness
Conductivity, strength, formability, spring properties, thermal behavior, and plating compatibility influence alloy and thickness selection.
Coplanarity & Formed Geometry
Leads, terminals, and formed sections must maintain the required height and positional relationships so they seat and connect correctly after forming and molding.
Carrier & Tie-Bar Design
Carrier rails, tie bars, indexing features, and temporary supports help control strip handling and maintain feature position through stamping, plating, molding, and assembly.
Plating & Functional Surfaces
Tin, nickel, gold, silver, or other specified finishes may be applied overall or selectively depending on soldering, wire bonding, contact, corrosion, or assembly requirements.
Mold Retention & Plastic Interface
Tabs, holes, barbs, shoulders, coined sections, and surface geometry can help mechanically anchor the insert and control movement during molding where the design requires it.
from DfM to Production
Gromax supports leadframe and sensor-insert programs from drawing review through repeatable production.
Part & DfM Review
Review the drawing, electrical function, material, lead geometry, pitch, tolerances, plating, carrier layout, molding interface, and production volume.
Progressive Die Design & Build
Develop tooling for the required piercing, blanking, coining, embossing, bending, forming, carrier creation, and cutoff operations.
Precision Stamping & Forming
Establish a repeatable process around lead width, spacing, coplanarity, terminal position, carrier registration, and critical formed relationships.
Plating & Secondary Operations
Incorporate selective or overall plating, cleaning, heat treatment where applicable, trimming, forming, assembly, or other required processing into the production plan.
Production Support
Support ongoing programs with tool maintenance, dimensional review, process monitoring, root-cause analysis, and corrective action.
quality & assembly fit
Inspection should verify the characteristics that determine whether the leadframe or insert positions, connects, and integrates correctly in the final assembly.
Lead Geometry
Lead width, pitch, length, thickness, straightness, and terminal profile.
Position & Coplanarity
Lead position, formed height, coplanarity, offset, and relationship to functional datums.
Carrier Features
Index holes, strip pitch, tie bars, rails, and temporary support features used for handling and process control.
Plating & Surface Condition
Coverage, thickness where specified, contact or bond areas, cleanliness, and surface condition.
Mold & Assembly Fit
Gromax checks critical dimensions using standard measurement, fixtures, optical inspection, custom gaging, or functional inspection methods and reviews your certification, traceability, and inspection documentation needs.
Gromax checks critical dimensions using standard measurement, fixtures, custom gaging, or functional inspection methods and reviews your certification, traceability, and inspection documentation needs.
Have a Leadframe or Sensor Insert You’d Like Us to Review?
Developing a new shield, grounding clip, or bonding component, or evaluating another source? Tell us about the application, material, contact surfaces, plating, production volume, and the fit, continuity, corrosion, or shielding issue you need to resolve.
Do not include Controlled Unclassified Information (CUI), ITAR-controlled technical data, or EAR-controlled export-controlled information in your initial email or RFQ submission.
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Customer Confidentiality
& Export Control Notice
To protect customer confidentiality and controlled technical information, Gromax does not publicly display customer-specific drawings, specifications, or sensitive part details without appropriate authorization.
Images shown are illustrative only and are used to represent the types of parts, geometries, and manufacturing capabilities Gromax supports. They do not depict specific customer designs or proprietary technical data.