LFXTAL069404 Equivalent & Substitute Parts Reference

Part Overview

The LFXTAL069404 is a 19.2 MHz fundamental mode crystal oscillator manufactured by IQD Frequency Products. This surface mount device operates across the industrial temperature range of -40°C to 85°C and is specified for 10pF load capacitance with 100 Ohms equivalent series resistance. The component is actively produced and ROHS3 compliant, making it suitable for modern electronic applications requiring precise frequency generation. Substitute parts may be required due to inventory constraints, supply chain considerations, or design standardization across manufacturing facilities.

Key Parameters

Parameter	Value	Unit
Frequency	19.2	MHz
Frequency Stability	±20	ppm
Load Capacitance	10	pF
Equivalent Series Resistance (ESR)	100	Ohms
Operating Mode	Fundamental	—
Operating Temperature Range	-40 to 85	°C
Mounting Type	Surface Mount	—
Package Type	4-SMD, No Lead	—
Physical Dimensions	2.50 × 2.00 × 0.60	mm (L × W × H)
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the LFXTAL069404 is determined by strict equivalence across the following critical parameters:

Frequency Specification: The substitute part must operate at 19.2 MHz with identical frequency stability of ±20ppm. This parameter is non-negotiable for circuit timing and synchronization functions.

Load Capacitance: The substitute must specify 10pF load capacitance to ensure proper oscillation characteristics within the host circuit's tank network.

Equivalent Series Resistance: The substitute must maintain 100 Ohms ESR to preserve circuit Q-factor and startup characteristics.

Operating Mode: The substitute must operate in fundamental mode, not overtone mode, to match the frequency generation method.

Temperature Range: The substitute must support the full -40°C to 85°C operating temperature range for industrial applications.

Package and Mounting: The substitute must use 4-SMD, No Lead surface mount packaging with identical physical dimensions (2.50mm × 2.00mm × 0.60mm maximum height) to ensure PCB footprint compatibility.

Compliance: The substitute must maintain ROHS3 compliance and REACH unaffected status for regulatory alignment.

The Würth Elektronik part number 830069404 meets all these criteria and is classified as a parametric equivalent.

Parameter Comparison

Parameter	LFXTAL069404 (IQD)	830069404 (Würth Elektronik)	Match
Frequency	19.2 MHz	19.2 MHz	✓
Frequency Stability	±20 ppm	±20 ppm	✓
Frequency Tolerance	±20 ppm	±20 ppm	✓
Load Capacitance	10 pF	10 pF	✓
ESR	100 Ohms	100 Ohms	✓
Operating Mode	Fundamental	Fundamental	✓
Operating Temperature	-40°C to 85°C	-40°C to 85°C	✓
Mounting Type	Surface Mount	Surface Mount	✓
Package / Case	4-SMD, No Lead	4-SMD, No Lead	✓
Physical Dimensions	2.50 × 2.00 × 0.60 mm	2.50 × 2.00 × 0.60 mm	✓
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	✓
REACH Status	REACH Unaffected	REACH Unaffected	✓
Product Status	Active	Active	✓

Engineering Selection Recommendations

Both the LFXTAL069404 and 830069404 are active production components with full ROHS3 compliance and REACH unaffected status. Selection between these parts should be based on the following factors:

Inventory Availability: The LFXTAL069404 has 762 pieces in stock, while the 830069404 has 2963 pieces available. Higher inventory of the Würth Elektronik part may support extended production runs or reduce lead time risk.

Manufacturer Standardization: Organizations may standardize on a single manufacturer's crystal product line for supply chain consistency and technical support alignment.

Regulatory and Compliance Alignment: Both parts satisfy identical compliance requirements, presenting no differentiation on this basis.

Series Designation: The LFXTAL069404 belongs to the IQD CFPX-218 series, while the 830069404 belongs to the Würth Elektronik WE-XTAL series. Series selection may be driven by existing design documentation or qualification history.

Frequently Asked Questions (FAQ)

Q: Can the 830069404 be used as a direct replacement for the LFXTAL069404 on existing PCBs?

A: Yes. Both parts share identical physical dimensions (2.50mm × 2.00mm × 0.60mm maximum height), 4-SMD No Lead package type, and PCB footprint. No layout modifications are required.

Q: Are the frequency stability specifications identical?

A: Yes. Both parts specify ±20ppm frequency stability and ±20ppm frequency tolerance, ensuring equivalent timing accuracy in circuit applications.

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

A: Yes. Both the LFXTAL069404 and 830069404 operate from -40°C to 85°C, supporting industrial temperature applications without derating.

Q: What is the significance of the 10pF load capacitance specification?

A: The 10pF load capacitance is the capacitive load for which the crystal frequency and ESR are specified. The oscillator circuit must present this load capacitance to the crystal for the specified frequency accuracy. Both substitute parts maintain this specification.

Q: Are there any differences in ESR between these parts?

A: No. Both parts specify 100 Ohms equivalent series resistance, which determines the crystal's impedance characteristics and circuit startup behavior.

Q: Do both parts require the same PCB layout considerations?

A: Yes. Identical package type, dimensions, and electrical specifications mean both parts follow the same PCB design guidelines for crystal oscillator circuits.

Q: What is the difference between frequency stability and frequency tolerance?

A: Both parameters are specified as ±20ppm for these parts. Frequency stability typically refers to the accuracy over the operating temperature range, while frequency tolerance refers to initial accuracy at 25°C. In this case, both values are identical.

Q: Are both parts suitable for high-volume production?

A: Yes. Both parts are active production components with substantial inventory levels (762 and 2963 pieces respectively), supporting high-volume manufacturing requirements.

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