HCM4925000000ABIT 25 MHz Crystal Equivalent & Substitute Parts

Part Overview

The HCM4925000000ABIT is a 25 MHz fundamental mode crystal oscillator manufactured by Citizen Finedevice Co Ltd, housed in an HC-49/US surface mount package. This component is designed for applications requiring precise frequency reference at 25 MHz with tight frequency tolerance of ±30ppm and 16pF load capacitance. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Equivalent and substitute parts are identified based on matching frequency, tolerance, operating mode, package type, and mechanical dimensions to ensure direct functional replacement in circuit designs.

Substiute Parts

HCM4925000000ABIT

Citizen Finedevice Co LtdIn Stock: 800HCM4925000000ABIT Datasheet

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HCM4925000000ABJT

Citizen Finedevice Co LtdIn Stock: 24563HCM4925000000ABJT Datasheet

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ABLS-25.000MHZ-20-A4-F-T

Abracon LLCIn Stock: 2726ABLS-25.000MHZ-20-A4-F-T Datasheet

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LFXTAL010595

IQD Frequency ProductsIn Stock: 3946LFXTAL010595 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the HCM4925000000ABIT are qualified based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

• Frequency: 25 MHz (exact match required)
• Frequency Tolerance: ±30ppm (exact match required)
• Operating Mode: Fundamental (exact match required)
• Package / Case: HC-49/US (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Operating Temperature Range: -10°C ~ 60°C (exact match required)

Secondary Compatibility Parameters:

• Load Capacitance: 16pF to 20pF (acceptable variation within circuit design margins)
• ESR: 40 to 50 Ohms (acceptable variation within circuit design margins)
• Frequency Stability: ±50ppm (matches all candidates)

Three substitute parts meet these criteria and are listed below.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts are qualified for direct replacement based on matching frequency, tolerance, operating mode, package type, and temperature range specifications.

HCM4925000000ABJT (Citizen Finedevice Co Ltd): This part differs from the main part only in load capacitance (18pF vs. 16pF). Both parts are manufactured by the same supplier, share identical frequency tolerance, ESR, and package dimensions. ROHS3 compliance and REACH Unaffected status match the main part. High inventory availability (24480 Pcs) supports supply chain continuity.

ABLS-25.000MHZ-20-A4-F-T (Abracon LLC): This part features 20pF load capacitance and 40 Ohms ESR, representing the widest load capacitance specification among substitutes. Mechanical dimensions are equivalent with slightly reduced height (4.20mm vs. 4.30mm). ROHS3 compliance is maintained. REACH Affected status differs from the main part. Inventory availability is 2700 Pcs.

LFXTAL010595 (IQD Frequency Products): This part matches the main part exactly in load capacitance (16pF) and ESR (40 Ohms). Width dimension is reduced to 3.80mm, providing a more compact footprint while maintaining equivalent height. ROHS3 compliance and REACH Unaffected status align with the main part. Inventory availability is 3854 Pcs.

Frequently Asked Questions (FAQ)

Q: Can HCM4925000000ABJT replace HCM4925000000ABIT directly?

A: Yes. Both parts share identical frequency (25 MHz), tolerance (±30ppm), ESR (50 Ohms), package (HC-49/US), and operating temperature range (-10°C ~ 60°C). The load capacitance difference (18pF vs. 16pF) is within acceptable circuit design margins for most applications. Both are manufactured by Citizen Finedevice Co Ltd with ROHS3 compliance.

Q: What is the significance of load capacitance variation among substitutes?

A: Load capacitance affects the crystal's resonant frequency in the circuit. The main part specifies 16pF, while substitutes range from 16pF to 20pF. Circuit designers must verify that the oscillator circuit's load capacitance specification accommodates the substitute part's load capacitance value. Frequency tolerance (±30ppm) remains constant across all parts.

Q: Are there mechanical compatibility concerns with LFXTAL010595?

A: LFXTAL010595 has a reduced width (3.80mm vs. 4.70mm) compared to the main part and other substitutes. Height and length dimensions are equivalent. PCB footprint and component placement must accommodate the narrower width. All parts maintain HC-49/US package classification and surface mount mounting type.

Q: Does REACH status affect part selection?

A: ABLS-25.000MHZ-20-A4-F-T is REACH Affected, while the main part and other substitutes are REACH Unaffected. Selection depends on regulatory requirements for the end application and geographic market. Both statuses indicate compliance with applicable regulations; REACH Affected status requires additional documentation for certain applications.

Q: Which substitute offers the best ESR performance?

A: ABLS-25.000MHZ-20-A4-F-T and LFXTAL010595 both feature 40 Ohms ESR, compared to 50 Ohms for the main part and HCM4925000000ABJT. Lower ESR reduces power dissipation and improves circuit efficiency. Selection should be based on circuit design requirements and thermal considerations.

Q: Are all substitutes available in the same packaging format?

A: HCM4925000000ABIT, HCM4925000000ABJT, and LFXTAL010595 are supplied in Tape & Reel (TR) packaging. ABLS-25.000MHZ-20-A4-F-T is supplied in Cut Tape (CT) & Digi-Reel® packaging. Packaging format affects handling, storage, and automated assembly processes. Verify compatibility with procurement and assembly workflows.