LFXTAL069400 18.432 MHz Crystal Equivalent & Substitute Parts

Part Overview

The LFXTAL069400 is an 18.432 MHz fundamental mode crystal manufactured by IQD Frequency Products. This surface mount device is specified for 18pF load capacitance with 100 Ohms equivalent series resistance (ESR) and operates across the industrial temperature range of -40°C to 85°C. The component is actively produced and ROHS3 compliant, making it suitable for modern electronic applications requiring precise frequency generation. Substitute parts are identified when equivalent electrical and mechanical parameters are required due to inventory constraints, supply chain considerations, or design flexibility needs.

Substiute Parts

LFXTAL069400

IQD Frequency ProductsIn Stock: 719LFXTAL069400 Datasheet

Current PartRFQ

830069400

Würth ElektronikIn Stock: 2208830069400 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LFXTAL069400 is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

• Frequency: 18.432 MHz (exact match required)
• Frequency Stability: ±20ppm (tolerance specification must be met or exceeded)
• Load Capacitance: 18pF (circuit design dependency)
• ESR: 100 Ohms (oscillator circuit impedance matching)
• Operating Mode: Fundamental (frequency generation method)

Mechanical and Environmental Equivalence Requirements:

• Package Type: 4-SMD, No Lead (PCB footprint compatibility)
• Physical Dimensions: 2.50mm × 2.00mm × 0.60mm maximum height (assembly clearance)
• Operating Temperature Range: -40°C to 85°C (application environment)
• Mounting Type: Surface Mount (assembly process compatibility)

Compliance Equivalence Requirements:

• RoHS3 Compliance (regulatory requirement)
• REACH Unaffected status (material restriction compliance)

Substitute parts must satisfy all electrical, mechanical, and compliance parameters without deviation. Parts meeting these criteria are classified as parametric equivalents and direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

The 830069400 manufactured by Würth Elektronik is a parametric equivalent substitute for the LFXTAL069400. Both components are actively produced and maintain identical electrical specifications, mechanical dimensions, and compliance certifications.

Selection Basis:

Both parts satisfy the complete set of substitution criteria:

• Electrical parameters (frequency, stability, load capacitance, ESR, operating mode) are identical
• Mechanical compatibility is confirmed through matching package type, dimensions, and mounting method
• Regulatory compliance is equivalent (ROHS3 Compliant, REACH Unaffected)
• Operating temperature range is identical (-40°C to 85°C)
• Both components are in active production status

The choice between LFXTAL069400 and 830069400 is determined by availability, lead time, cost considerations, and supply chain requirements rather than technical performance differences.

Frequently Asked Questions (FAQ)

Q: Can the 830069400 be used as a direct replacement for the LFXTAL069400 in existing designs?

A: Yes. The 830069400 is a parametric equivalent with identical electrical specifications (18.432 MHz, ±20ppm stability, 18pF load capacitance, 100 Ohms ESR), mechanical dimensions (2.50 × 2.00 × 0.60 mm), and package type (4-SMD, No Lead). No circuit modifications are required.

Q: Are there any differences in PCB footprint between these two parts?

A: No. Both components use the 4-SMD, No Lead package with identical physical dimensions of 2.50mm length × 2.00mm width × 0.60mm maximum height. PCB footprints are interchangeable.

Q: Do both parts operate across the same temperature range?

A: Yes. Both the LFXTAL069400 and 830069400 operate from -40°C to 85°C, making them suitable for identical application environments.

Q: Are there compliance differences between the two parts?

A: No. Both components are ROHS3 compliant and REACH unaffected, meeting equivalent regulatory requirements.

Q: What determines whether a substitute part is acceptable?

A: Substitution is determined by exact equivalence across frequency (18.432 MHz), frequency stability (±20ppm), load capacitance (18pF), ESR (100 Ohms), operating mode (Fundamental), package type (4-SMD, No Lead), physical dimensions, operating temperature range (-40°C to 85°C), and compliance status (ROHS3, REACH).

Q: Can parts with different frequency values substitute for the LFXTAL069400?

A: No. Frequency is a critical parameter. Only 18.432 MHz crystals are acceptable substitutes. Different frequencies will not function in circuits designed for 18.432 MHz operation.

Q: What is the significance of the 18pF load capacitance specification?

A: Load capacitance is a circuit design parameter that affects oscillator frequency accuracy and stability. The 18pF specification must be matched exactly. Substitutes with different load capacitance values are not compatible.

Q: Are there inventory considerations when selecting between these parts?

A: Yes. The LFXTAL069400 has 703 pieces in stock, while the 830069400 has 2161 pieces available. Inventory levels may influence selection based on delivery requirements and supply chain strategy.