Lead Pins: Temperature Range -40°C to +150°C

Q: What are the key considerations when selecting lead pins for high-power laser diodes?

Prioritize thermal conductivity (e.g., copper alloys), current rating (≥3A for high power), and plating quality to prevent oxidation. Ensure compliance with standards like IEC 60191 for reliability in industrial environments.

Q: How do lead pins impact signal integrity in optical devices?

Poorly designed pins can cause signal loss, impedance mismatches, or electromagnetic interference. Use low-resistance materials and precise geometries to maintain signal fidelity, especially in high-frequency applications.

Component Specifications

Definition

Lead pins are precision-engineered conductive terminals typically made from metals or alloys, designed to establish electrical connections between semiconductor devices (e.g., laser diodes) and external circuits. They serve as both electrical conduits and mechanical anchors, ensuring stable signal transmission and physical mounting within light source assemblies. In industrial applications, they are critical for thermal management, signal integrity, and durability in high-frequency or high-power environments.

Working Principle

Lead pins function by providing a low-resistance electrical path between the internal semiconductor die of a component (like a laser diode) and the external circuitry. They conduct electrical signals or power while dissipating heat generated during operation. Mechanically, they secure the component to a substrate (e.g., PCB) through soldering or welding, maintaining alignment and stability under thermal or vibrational stresses.

Materials

Common materials include copper alloys (e.g., C19400 for conductivity and strength), phosphor bronze (for spring properties), or nickel-plated steel (for corrosion resistance). Gold or tin plating may be applied to enhance solderability and reduce oxidation. For high-power laser diodes, materials with high thermal conductivity (e.g., copper-tungsten composites) are used.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Length	5mm to 20mm
Diameter	0.3mm to 1.5mm
Resistance	< 10 mΩ
Current Rating	Up to 5A
Plating Thickness	0.5μm to 2μm (gold/tin)
Temperature Range	-40°C to +150°C

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

IEC 60191, JEDEC MS-001

Parent Products

This component is used in the following industrial products

Light Source (e.g., Laser Diode)

An optical component that generates and emits light, typically coherent or specific-wavelength illumination, for sensing applications.

View Product Details

Quartz Crystal Resonator

A piezoelectric component that generates precise electrical oscillations at a specific frequency when voltage is applied.

View Product Details

Engineering Analysis

Risks & Mitigation

Poor solder joints leading to electrical failure
Thermal fatigue from repeated heating/cooling cycles
Corrosion in humid environments

FMEA Triads

Trigger: Insufficient plating thickness
Failure: Oxidation increases resistance, causing signal degradation or open circuits
Mitigation: Specify minimum plating thickness (e.g., 1μm gold) and implement regular quality checks per ISO 9001

Trigger: Mechanical stress during assembly
Failure: Pin bending or breakage, disrupting electrical connections
Mitigation: Use automated insertion tools with force control and design pins with stress-relief features

Industrial Ecosystem

Compatible With

Laser diodes, LED arrays, photodiodes, optical sensors

Typical Suppliers & Equivalents

TE Connectivity, Amphenol, Molex, Hirose Electric

Compliance & Inspection

Tolerance

±0.05mm diameter, ±0.1mm length

Test Method

Electrical continuity testing (per IEC 60191), thermal cycling tests, solderability assessments (e.g., wetting balance tests)

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Lead Pins

Manufacturer profiles associated with Lead Pins.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What are the key considerations when selecting lead pins for high-power laser diodes?