LFXTAL003151 Equivalent & Substitute Parts Reference

Part Overview

The LFXTAL003151 is an 8 MHz fundamental mode crystal oscillator manufactured by IQD Frequency Products, housed in an HC-49/US surface mount package. This component is designed for applications requiring precise frequency generation with a load capacitance of 16pF and an equivalent series resistance of 40 Ohms. The part maintains Active product status and is RoHS3 compliant, making it suitable for modern electronic applications. Substitute parts are identified when equivalent electrical and mechanical parameters are available from alternative manufacturers, enabling supply chain flexibility and inventory optimization.

Substiute Parts

LFXTAL003151

IQD Frequency ProductsIn Stock: 1638LFXTAL003151 Datasheet

Current PartRFQ

GC0800044

Diodes IncorporatedIn Stock: 1480GC0800044 Datasheet

DirectRFQ

HCM498000000ABJT

Citizen Finedevice Co LtdIn Stock: 1547HCM498000000ABJT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LFXTAL003151 are classified based on electrical and mechanical compatibility within the following criteria:

Direct Substitutes share identical or equivalent electrical specifications: 8 MHz frequency, ±30ppm tolerance, 16pF load capacitance, 40 Ohms ESR, HC-49/US package, and surface mount configuration. These parts are interchangeable in circuit applications without modification.

Similar Substitutes maintain the same frequency, tolerance, operating mode, and package type but differ in load capacitance or ESR values. These parts require circuit design verification to confirm compatibility with the application's load capacitance requirements.

The substitution logic is based strictly on:

• Frequency matching (8 MHz)
• Frequency tolerance alignment (±30ppm)
• Load capacitance compatibility (16pF or 18pF)
• ESR specification (40 Ohms or 100 Ohms)
• Package type (HC-49/US)
• Mounting method (Surface Mount)
• Product status (Active)
• Compliance certifications (RoHS3)

Parameter Comparison

Engineering Selection Recommendations

GC0800044 (Diodes Incorporated) is classified as a direct substitute for LFXTAL003151. Both parts share identical electrical specifications: 8 MHz frequency, ±30ppm tolerance, 16pF load capacitance, and 40 Ohms ESR. The GC0800044 offers an extended operating temperature range (-20°C ~ 70°C) compared to the LFXTAL003151 (-10°C ~ 60°C), providing additional thermal margin in applications requiring wider temperature operation. Both parts maintain Active product status and ROHS3 compliance. Selection between these two parts is based on packaging preference (Cut Tape vs. Tape & Reel) and inventory availability.

HCM498000000ABJT (Citizen Finedevice Co Ltd) is classified as a similar substitute. While it maintains the same 8 MHz frequency, ±30ppm tolerance, and HC-49/US package, it differs in load capacitance (18pF vs. 16pF) and ESR (100 Ohms vs. 40 Ohms). This part is suitable for applications where the circuit design accommodates 18pF load capacitance and higher ESR values. The HCM498000000ABJT maintains Active product status and ROHS3 compliance. Circuit design verification is required before substitution to confirm load capacitance and ESR compatibility.

All three parts are RoHS3 compliant and REACH unaffected, meeting modern regulatory requirements for electronic component manufacturing and use.

Frequently Asked Questions (FAQ)

Q: Can GC0800044 be used as a direct replacement for LFXTAL003151?

A: Yes. Both parts share identical electrical specifications: 8 MHz frequency, ±30ppm tolerance, 16pF load capacitance, and 40 Ohms ESR. The GC0800044 is electrically and mechanically compatible with LFXTAL003151 in all applications designed for these parameters. The primary difference is packaging format (Tape & Reel vs. Cut Tape).

Q: What are the key differences between LFXTAL003151 and HCM498000000ABJT?

A: Both parts operate at 8 MHz with ±30ppm tolerance in HC-49/US packages. The HCM498000000ABJT differs in two electrical parameters: load capacitance is 18pF (vs. 16pF) and ESR is 100 Ohms (vs. 40 Ohms). These differences affect circuit oscillation characteristics and must be evaluated against the application's design specifications before substitution.

Q: Does load capacitance difference affect circuit performance?

A: Load capacitance is a critical parameter that determines the crystal's frequency output in a given circuit. The LFXTAL003151 and GC0800044 both specify 16pF load capacitance, making them interchangeable. The HCM498000000ABJT specifies 18pF, which may shift the oscillation frequency if the circuit is designed for 16pF. Circuit design verification is required.

Q: Are all three parts RoHS3 compliant?

A: Yes. LFXTAL003151, GC0800044, and HCM498000000ABJT are all ROHS3 compliant and REACH unaffected, meeting regulatory requirements for use in modern electronic applications.

Q: What is the difference between Cut Tape and Tape & Reel packaging?

A: Cut Tape (CT) packaging provides individual component strips suitable for manual handling and smaller volume applications. Tape & Reel (TR) packaging provides components on continuous reels optimized for automated assembly equipment and higher volume production. Both formats contain the same component; packaging selection depends on assembly process requirements.

Q: Can HCM498000000ABJT be used if the application specifies 16pF load capacitance?

A: The HCM498000000ABJT specifies 18pF load capacitance. Using this part in a circuit designed for 16pF load capacitance may result in frequency deviation. Circuit design verification and oscillator tuning analysis are required to confirm compatibility with the application's frequency stability requirements.

Q: What is the operating temperature range difference between these parts?

A: LFXTAL003151 and HCM498000000ABJT operate from -10°C to 60°C. GC0800044 operates from -20°C to 70°C, providing a wider temperature range. Selection depends on the application's thermal environment requirements.