INDUSTRY COMPONENT

Holder/Base

Holder/Base for quartz crystal oscillator providing mechanical support, electrical connection, and thermal management in electronic circuits.

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Component Specifications

Definition
A precision-engineered component designed to securely mount and electrically connect a quartz crystal resonator within an oscillator circuit. It provides mechanical stability, precise positioning, electrical contacts for signal transmission, and often includes thermal management features to maintain frequency stability. The holder/base ensures proper alignment between the crystal element and the oscillator circuit while protecting against vibration, shock, and environmental factors.
Working Principle
The holder/base mechanically secures the quartz crystal element while providing electrical connections between the crystal electrodes and the oscillator circuit. It maintains precise dimensional stability to ensure consistent resonant frequency by minimizing mechanical stress on the crystal. Thermal management features (when present) dissipate heat to maintain temperature stability, crucial for frequency accuracy. The design ensures minimal parasitic capacitance and inductance to preserve the crystal's electrical characteristics.
Materials
Typically made from high-temperature thermoplastics (PPS, LCP, PEEK) or ceramics (alumina, aluminum nitride) with metal contacts (nickel-plated brass, phosphor bronze, or beryllium copper). Insulation materials meet UL94 V-0 flammability rating. Lead-free plating compliant with RoHS directives.
Technical Parameters
  • Pin Count 2 or 4 contacts
  • Mounting Type Through-hole or surface mount
  • Load Capacitance 8 pF to 32 pF
  • Holder Dimensions Standardized to crystal package sizes (HC-49, HC-49S, etc.)
  • Contact Resistance <50 mΩ
  • Insulation Resistance >1 GΩ at 100VDC
  • Operating Temperature -40°C to +125°C
  • Resonant Frequency Range 1 MHz to 200 MHz
Standards
IEC 60122-1, EIA-512, JIS C6701

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Holder/Base.

quartz crystal holder oscillator base crystal mount electronic component holder frequency control component crystal oscillator hardware Holder/Base Holder/Base in Computer, Electronic and Optical Product Manufacturing

Parent Products

This component is used in the following industrial products

Quartz Crystal Oscillator

A precision electronic component that generates a stable clock signal using the mechanical resonance of a vibrating quartz crystal.

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Engineering Analysis

Risks & Mitigation
  • Mechanical stress causing frequency drift
  • Poor solder joints leading to intermittent connections
  • Thermal expansion mismatch damaging crystal
  • Contamination affecting electrical properties
FMEA Triads
Trigger: Excessive mechanical stress during assembly
Failure: Crystal fracture or frequency deviation
Mitigation: Use torque-controlled installation tools and stress-relief designs
Trigger: Thermal cycling beyond material limits
Failure: Contact fatigue or insulation breakdown
Mitigation: Select materials with matched thermal expansion coefficients
Trigger: Contamination from flux or handling
Failure: Increased contact resistance or short circuits
Mitigation: Implement cleanroom assembly procedures and protective coatings

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.1mm dimensional tolerance for critical features, ±5% for electrical characteristics
Test Method
Visual inspection per IPC-A-610, electrical testing with LCR meters, thermal cycling per IEC 60068-2-14

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the difference between through-hole and surface mount crystal holders?

Through-hole holders have pins that insert into PCB holes for soldering, providing stronger mechanical bonds. Surface mount holders have flat contacts for reflow soldering, enabling automated assembly and smaller footprints.

How does holder material affect oscillator performance?

Material properties impact thermal expansion, dielectric constant, and mechanical stability. Ceramic holders offer better thermal conductivity and stability, while plastic holders provide cost efficiency and adequate performance for most applications.

Can crystal holders be used interchangeably between different oscillator types?

No, holders are designed for specific crystal packages (HC-49, HC-49S, etc.) and mounting configurations. Using incorrect holders can cause frequency drift, poor connections, or mechanical damage.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

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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