leadframes &
sensor inserts
Built for consistent contact position.
Leadframes and sensor inserts carry signals, locate contacts, support grounding, and connect sensing elements to the rest of the assembly.
Small changes in spacing, coplanarity, plating, burr direction, or insert position can affect molding, assembly, and sensor performance.
Gromax supports precision stamped leadframes, sensor inserts, contact carriers, terminal arrays, and conductive components for electronic, industrial, medical, automotive, defense, and molding-integrated products.
Insert-Molded Contacts
Precision contacts designed for insert molding or overmolding where position, alignment, retention, and long-term stability matter.
Sensor Contacts
Precision stamped contacts used to transmit power, ground, or signal between sensing elements, connectors, housings, and control electronics.
Leadframe-Style Terminals
Stamped terminals used to position, support, and electrically connect components inside sensor, connector, and electronic assemblies.
Battery Contacts
Precision spring and conductive contacts used in battery-powered sensor modules, portable devices, medical electronics, and compact electronic assemblies.
Grounding Tabs
Stamped grounding features used to establish electrical continuity, grounding paths, shielding support, and EMI control inside electronic products.
Terminal Arrays
Multi-contact stamped structures used in compact electronic assemblies, molded connector interfaces, and high-density connection points.
Sensor Leadframes
Precision leadframe components used to support sensor position, signal transfer, molded retention, and electrical connection in automotive, industrial, medical, and consumer sensing devices.
Contact Carriers
Stamped carrier structures used to hold, locate, and protect contacts during plating, molding, handling, assembly, or automated processing.
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common applications
Leadframes and sensor inserts are used where electrical performance, contact position, sensor accuracy, and repeatable manufacturing affect product reliability.
Smart Meter Sensor Module
Stamped leadframes and sensor inserts can be used inside smart meter sensor modules to support current sensing, voltage sensing, grounding, and signal transfer between sensing elements, connector interfaces, and control electronics.
Engine Sensor Connector
Stamped leadframes and sensor inserts are used in engine sensor connectors to carry power, ground, and signal between the sensor element, molded connector body, and vehicle wiring interface.
Rugged Sensor Interconnect
Stamped leadframes and sensor inserts can be used in rugged aerospace or defense sensor interconnects where stable contact geometry, retention, grounding, and signal integrity matter under vibration and harsh operating conditions.
DIN-Rail Relay or Sensor Interface Module
Stamped leadframes and sensor inserts are used in industrial interface modules to route signals between field wiring, sensor inputs, relay circuits, and control electronics.
Portable Patient Monitoring Device
Stamped leadframes and sensor inserts can support signal transfer, battery connection, board-level contact, and sensor positioning inside portable patient monitoring equipment.
Overmolded Sensor Connector Assembly
Stamped leadframes and sensor inserts are commonly used in overmolded sensor connector assemblies to hold terminals in position while plastic is molded around them.
when
GROMAX
is a good fit
Fine Features Must Stay Consistent
Leadframes and sensor inserts may include:
• Narrow webs
• Fine-pitch terminals
• Small holes
• Contact tips
• Tie bars
• Slots
• Formed leads
• Delicate carrier features
These features need stable tooling and controlled material handling.
Contact Position Is Function-Critical
Sensor performance may depend on repeatable:
• Terminal spacing
• Contact height
• Exposed length
• Coplanarity
• Alignment
• Lead position
• Mating geometry
Small shifts can create assembly or electrical problems.
Insert Location Must Survive Molding
Parts used inside molded housings may need accurate placement before, during, and after molding.
Carrier design, retention features, burr direction, and mold-loading method all affect final insert position.
Carrier-Strip Design Matters
Carrier strips may support:
• Reel-to-reel plating
• Automated assembly
• Mold loading
• Orientation control
• Inspection
• Packaging
• Final separation
The carrier should support both the stamping process and the customer’s downstream operation.
Plating Affects Electrical Performance
Tin, nickel, silver, gold, and RoHS-compliant finishes can affect:
• Conductivity
• Solderability
• Corrosion resistance
• Wear
• Contact spacing
• Final fit
Plating buildup should be reviewed early where geometry is tight.
Repeatable Production Is Required
Progressive tooling is often a strong fit when the program needs stable spacing, clean features, controlled orientation, and long-term production consistency.
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Export Control
& Confidentiality Notice
To comply with ITAR, DFARS, and applicable U.S. export control regulations, Gromax does not display actual customer parts, drawings, specifications, or technical data in public-facing materials.
Images shown are illustrative only and are used to represent Gromax’s design and manufacturing capabilities. They do not contain proprietary, controlled, or export-restricted information.