INDUSTRY COMPONENT

Package/Casing

Protective housing for laser diodes ensuring thermal management, hermetic sealing, and optical alignment in industrial applications.

Component Specifications

Definition
A precision-engineered enclosure designed to house laser diode chips, providing mechanical protection, thermal dissipation through integrated heat sinks, hermetic sealing to prevent contamination, and precise optical alignment for beam emission. It incorporates electrical contacts, optical windows/lenses, and mounting interfaces compatible with industrial laser systems.
Working Principle
The casing dissipates heat generated by the laser diode via conductive materials (e.g., copper, aluminum) to maintain optimal operating temperatures, while hermetically sealing the interior with glass or ceramic windows to protect the semiconductor from environmental factors. It aligns the diode's emission axis with external optics through precision machining.
Materials
Copper-tungsten (CuW) or aluminum nitride (AlN) for baseplates; Kovar or stainless steel for sidewalls; borosilicate glass or sapphire for optical windows; gold-plated contacts.
Technical Parameters
ParameterTypical rangeNotes & selection driver
DimensionsTO-3, TO-9, or custom footprints
Hermeticity< 5×10⁻⁸ atm·cc/s He
Optical Aperture3-10 mm diameter
Thermal Resistance< 10 K/W
Operating Temperature-40°C to +85°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
ISO 10110, IEC 60825, MIL-PRF-38534

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Thermal runaway due to inadequate heat dissipation
  • Hermeticity failure leading to diode degradation
  • Misalignment causing beam divergence or power loss
FMEA Triads
Trigger: Poor solder joint between diode and baseplate
Failure: Increased thermal resistance and overheating
Mitigation: Use automated soldering with X-ray inspection and thermal cycling tests.
Trigger: Seal glass cracking under thermal stress
Failure: Loss of hermeticity and contamination ingress
Mitigation: Implement stress-relief designs and CTE-matched materials.

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
±0.05 mm for optical axis alignment, ±1° for window parallelism
Test Method
Helium leak testing per MIL-STD-883, thermal imaging for hotspot detection, spectroradiometry for optical output verification

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 Package/Casing

Manufacturer profiles associated with Package/Casing.

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Frequently Asked Questions

What is the primary function of a laser diode package?

To protect the diode chip from environmental damage, dissipate heat, and provide electrical/optical interfaces for integration into laser systems.

Why is hermetic sealing critical in industrial laser diode casings?

It prevents moisture, dust, and gases from degrading the semiconductor, ensuring long-term reliability and stable optical performance.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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