Semiconductor, Laser & Optoelectronic Packages

What We Do

KELTRYN is a precision CNC machining partner focused on Kovar and Fe-Ni-Co alloy components used in hermetic electronic packaging and demanding engineering applications.

Custom Parts

Housings and enclosures
Lids and caps
Sealing rings and cover rings
Frames and flanges
Complex precision features for feedthroughs, windows, and sealing lands

Typical Applications

Semiconductor and optoelectronic device packages
Laser diode and photonics packages
RF, microwave, and sensor enclosures
Glass-to-metal and ceramic-to-metal seal components
Vacuum and high-reliability electronic assemblies

Industries Served

Hermetic electronic packaging
Semiconductor and optoelectronic equipment
Laser and photonics systems
Aerospace and defense electronics
Medical devices and diagnostic instruments
Vacuum systems and scientific instruments

Why KELTRYN for Hermetic Packages

1

Built for Kovar

We control heat input, work hardening, and tool pressure to protect sealing surfaces, maintain flatness, and minimize thin-wall distortion.

2

Burr Control for Sealing Integrity

Micro-deburring and edge management to protect gaskets, braze preforms, and glass/ceramic sealing interfaces.

3

Thin-Wall Expertise

Process strategies for small features and tight geometries common in optoelectronic and laser packages.

4

Practical DFM Support

Early manufacturability feedback on wall thickness, corner radii, sealing-land geometry, datum strategy, and inspection feasibility.

5

Reliable Communication & Documentation

Material certification, lot traceability, and inspection reporting aligned with high-reliability requirements.

Capabilities for Semiconductor, Laser & Optoelectronic Packages

Machining Services

CNC turning, CNC milling, and multi-axis machining
Prototype development and low-volume production
Feature tolerancing for sealing, alignment, and assembly interfaces
Controlled deburring for burr-critical edges and micro-features
Finishing and inspection support

Typical Precision & Finishes

Dimensional control: standard ±0.02–0.05 mm; critical features down to ±0.01 mm upon review
Flatness/parallelism on sealing lands: held as specified based on size and geometry
Surface finish: sealing surfaces commonly specified 16–32 μin Ra; we finish to print
Edge quality: edge breaks and burr limits per drawing; micro-deburring available

* Final capability depends on part size, geometry, and inspection method. We review critical features with you before machining.

Components We Commonly Machine

Kovar/ASTM F15 housings

For laser diodes, photodiodes, and hybrid modules.

Lids, caps, and seal rings

For glass-to-metal and ceramic-to-metal packages.

Frames and flanges

For optoelectronic and RF assemblies.

Precision features

For windows, feedthroughs, and fiber or pin alignment.

Low-profile, thin-wall enclosures

For compact photonics and sensor modules.

Engineering for Sealing Performance

Sealing-land protection: Minimizing tool marks, managing surface condition, and controlling burrs for reliable hermetic sealing or brazing.
Heat and work-hardening control: Toolpaths and feeds/speeds tuned for Kovar and Fe-Ni-Co alloys to maintain stability and finish.
Thin-wall stability: Workholding, step-down strategies, and in-process checks that reduce deformation on small cross-sections.
Datum and GD&T alignment: Clear datum structures and inspection strategies to ensure sealing, alignment, and optical path accuracy.

Quality, Inspection, and Traceability

✓ Material certification and lot traceability for Kovar / ASTM F15 / Fe-Ni-Co alloys
✓ First-article and in-process inspections aligned to your print
✓ Dimensional documentation and inspection reports upon request
✓ Controlled handling of sealing features and cosmetic surfaces
✓ Secure packaging to protect sealing lands and edges

From Prototypes to Repeatable Production

We support your full journey from design validation to reliable volume supply.

1

Early-Stage DFM & Prototypes

Iterative prototyping to validate sealing and assembly before production release.

2

Low-Volume Runs

Pilot builds and phased production with consistent quality and documentation.

3

Repeat Production

Repeatable runs with setup control, traceability, and reliable delivery.

Design Guidelines & DFM Checklist for Kovar Packages

Design considerations (guideline ranges; we will confirm by part)

Design Considerations

Wall thickness: stable machining often ≥0.4–0.6 mm depending on span; thinner possible with process adaptations
Corner radii: internal radii ≥0.2–0.4 mm help tool access and surface quality
Threads/ports: specify class, reliefs, and gauging method; protect sealing lands adjacent to threads
Sealing surfaces: define Ra, flatness/parallelism, and edge conditions; indicate “critical seal” callouts
Datums and GD&T: choose functional datums and realistic tolerance stack-ups based on inspection method
Measurement: note any CMM/vision requirements and sampling plan for critical dimensions
Material: specify Kovar / ASTM F15 / Fe-Ni-Co alloy requirements, condition, and any special heat treatment or finish
Cleanliness/packaging: define protection or cleanliness needs for sealing/cosmetic surfaces

RFQ Checklist

2D drawing (PDF) with full tolerances and notes
3D CAD (STEP/Parasolid) for geometry clarity
Material spec (Kovar / ASTM F15 / Fe-Ni-Co) and lot traceability needs
Quantities for prototype and/or production
Required surface finishes, especially for sealing lands
Inspection/reporting requirements (FAI, sampling, 100% on critical features)
Target delivery timeline (1–6 months typical)

Materials and Standards

Kovar (ASTM F15), Fe-Ni-Co alloys for hermetic packaging
Experience with components for glass-to-metal and ceramic-to-metal sealing
Machining practices tailored to high-reliability, vacuum, RF, and optoelectronic assemblies

Who We Support

Mechanical, manufacturing, process, and packaging engineers
Product development teams and sourcing managers
Quality engineers in hermetic and high-reliability programs
Specialized hardware startups requiring clear, dependable supplier communication

How to Get Started

1

Share Your Details

Send your drawing, 3D CAD, quantities, and target timeline.

2

We Review & Align

We review DFM, confirm critical features, and agree on inspection and traceability.

3

Deliver & Scale

We deliver prototypes to validate sealing and assembly, then transition to repeatable production.

Frequently Asked Questions

Can you hold tight tolerances on small sealing features?

Yes. We routinely control critical features with tight positional, flatness, and finish requirements. We'll review geometry, size, and inspection method to agree on achievable tolerances (often down to ±0.01 mm on critical features, depending on part).

How do you manage burrs in sealing areas?

We plan machining and micro-deburring processes around burr-sensitive edges. Sealing lands and gasket/braze interfaces receive special handling to meet your edge and finish requirements.

Do you support low-volume runs and prototypes?

Yes. We specialize in prototypes and low-volume production for semiconductor, laser, and optoelectronic packages, with a clear path to repeat orders.

Can you provide material and inspection documentation?

Yes. We provide material certificates, lot traceability, and inspection reports per your requirements.

What information helps you quote quickly?

2D drawing, 3D CAD, material spec (e.g., Kovar/ASTM F15), quantities, critical features, finish requirements, inspection plan, and delivery timing.

Ready to Discuss Your Kovar Machining Needs?

Looking for a Kovar CNC machining supplier for semiconductor, laser, and optoelectronic packages? Contact KELTRYN to discuss your housings, lids, caps, sealing rings, frames, and flanges in Kovar/ASTM F15 and Fe-Ni-Co alloys.

RFQ Support

Send Your Kovar Machining RFQ

Share drawings, CAD files, material requirements, quantities, tolerances, finishing needs, inspection requirements, and your target timeline. Our team will review the details and respond by email.

Helpful RFQ details

2D drawings or 3D CAD files
Material: Kovar / ASTM F15 / Fe-Ni-Co alloy
Quantity, tolerance, finish, inspection needs
Application and purchasing timeline

Direct email: info@kovarmachining.com

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Kovar CNC Machining for Semiconductor, Laser & Optoelectronic Packages