---
title: "High-Purity Quartz Crystal Blank"
industry: "Manufacture of Measuring, Testing, Navigation and Control Equipment"
verification_protocol:
  urn: "URN:CNFX:ME:HIGH_PURITY_QUARTZ_CRYSTAL_BLANK"
  data_integrity_hash: "948d03d350d2295e4bb196be4ba560cc"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:HIGH_PURITY_QUARTZ_CRYSTAL_BLANK"
  data_source_uri: "https://cnfx.com/llms/industry/manufacture-measuring-testing-navigation-equipment/product/high-purity-quartz-crystal-blank.md"
  official_resource_url: "https://cnfx.com/industry/manufacture-measuring-testing-navigation-equipment/product/high-purity-quartz-crystal-blank"
  is_verified_logic: true
attributes:
  frequency_range:
    status: "config-dependent"
    typical_range: "10-100 MHz frequency stability, -40 to +85°C temperature range, 5-15 ppm frequency tolerance"
    unit: "MHz"
  temperature_stability:
    status: "config-dependent"
    typical_range: "121-135 °C"
    unit: "ppm/°C"
engineering_limits:
  max_safe_operating_point:
    value: 150
    unit: "MPa"
    consequence: "Crystal lattice dislocation propagation under mechanical stress exceeding yield strength, piezoelectric coefficient degradation from impurity diffusion at 300°C, surface contamination-induced acoustic wave scattering"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Mechanical shock exceeding 5000 g-force"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Shock-absorbing mounting with silicone gel encapsulation, reinforced crystal holder design with 2 mm minimum wall thickness"
  - node_2:
      trigger: "Thermal cycling between -55°C and +125°C at 10°C/minute rate"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Multi-layer electrode deposition with chromium adhesion layer (50 nm), graded CTE transition layers, hermetic sealing at 10^-3 Torr vacuum"
bom_nodes:
  crystal-lattice-structure:
    type: "component"
    urn: "URN:CNFX:ME:CRYSTAL_LATTICE_STRUCTURE"
    interface_type: "physical-logic-coupled"
  orientation-flats:
    type: "component"
    urn: "URN:CNFX:ME:ORIENTATION_FLATS"
    interface_type: "physical-logic-coupled"
  protective-coating:
    type: "component"
    urn: "URN:CNFX:ME:PROTECTIVE_COATING"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 3290-1:2014 (ROLLING BEARINGS - BALLS)"
    scope: "Verified Engineering Specification"
  - standard: "IEC 60368-1:2022 (PIEZOELECTRIC FILTERS OF ASSESSED QUALITY - PART 1: GENERIC SPECIFICATION)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/manufacture-measuring-testing-navigation-equipment/product/high-purity-quartz-crystal-blank.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "e22451a93bf472b55294a998a35f651b48fb6604fe175dd00388946bd64d8eb2"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: High-Purity Quartz Crystal Blank

## 1. Technical Definition
Raw quartz crystal material for precision timing and frequency control devices.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **10-100 MHz frequency stability, -40 to +85°C temperature range, 5-15 ppm frequency tolerance**. Failure boundary: **Crystal fracture at 150 MPa tensile stress, frequency drift exceeding 50 ppm, Q-factor degradation below 100,000**, Mechanism: **Crystal lattice dislocation propagation under mechanical stress exceeding yield strength, piezoelectric coefficient degradation from impurity diffusion at 300°C, surface contamination-induced acoustic wave scattering**.

### 2.1 Analytical Physics Model
Governed by the **Rayleigh Resolution Criterion**:

> **Primary Equation**: $d = \frac{0.61 \lambda}{NA}$  
> **Engineering Impact**: Defines the theoretical limit of machine vision systems.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| \lambda | Wavelength | Engineering Constant |
| NA | Numerical Aperture | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Mechanical shock exceeding 5000 g-force | 8 | Crystal fracture along (101) cleavage plane | Shock-absorbing mounting with silicone gel encapsulation, reinforced crystal holder design with 2 mm minimum wall thickness |
| Thermal cycling between -55°C and +125°C at 10°C/minute rate | 8 | Electrode delamination from differential thermal expansion (CTE mismatch: 0.55 ppm/°C quartz vs 17 ppm/°C silver) | Multi-layer electrode deposition with chromium adhesion layer (50 nm), graded CTE transition layers, hermetic sealing at 10^-3 Torr vacuum |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| frequency_range | Config-dependent | MHz | Verified |
| temperature_stability | Config-dependent | ppm/°C | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Crystal Growing Furnace**, **Lapping and Polishing Machine**, **Frequency Testing Equipment**  
**Downstream Applications**: Quartz Crystal Oscillators, Atomic Clocks, Navigation System Timing Modules  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What are the key specifications to consider when selecting quartz crystal blanks for precision timing devices?
**A**: Critical specifications include crystal cut angle (typically AT-cut for stability), frequency tolerance (measured in ppm), impurity concentration (in ppb for high purity), Q-factor (indicating energy efficiency), surface roughness (in nm Ra), and thickness variation (in μm) to ensure consistent performance in timing and frequency control applications.

### Q: How do synthetic and natural quartz crystal blanks differ for industrial applications?
**A**: Synthetic quartz crystal blanks offer superior purity and consistency with controlled impurity levels (often &lt;1 ppb), making them ideal for high-precision applications like navigation and testing equipment. Natural quartz blanks may have higher impurity concentrations but can be suitable for less demanding applications. Both types require precise crystal lattice structure and orientation flats for proper frequency control.

### Q: What role does the protective coating play in quartz crystal blank performance?
**A**: The protective coating on quartz crystal blanks prevents contamination, reduces surface oxidation, and maintains the crystal's structural integrity during handling and device assembly. This coating helps preserve the specified surface roughness and thickness variation, ensuring stable frequency output and longevity in measuring and control equipment operating in various environmental conditions.

## 6. Manufacturing Compliance
- ISO 3290-1:2014 (ROLLING BEARINGS - BALLS)
- IEC 60368-1:2022 (PIEZOELECTRIC FILTERS OF ASSESSED QUALITY - PART 1: GENERIC SPECIFICATION)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: High-Purity Quartz Crystal Blank](https://cnfx.com/industry/manufacture-measuring-testing-navigation-equipment/product/high-purity-quartz-crystal-blank)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **3** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: HIGH_PURITY_QUARTZ_CRYSTAL_BLANK | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 677f6ab7
