Equivalent & Substitute Parts for 9C25077009

Part Overview

The TXC CORPORATION 9C25077009 is a 25 MHz surface mount crystal oscillator with 20pF load capacitance and 30 Ohms equivalent series resistance (ESR), housed in an HC-49/US package. This component operates across the temperature range of -20°C to 70°C with ±30ppm frequency stability and tolerance specifications.

The 9C25077009 carries an obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this crystal frequency and electrical specification.

Substiute Parts

9C25077009

TXC CORPORATIONIn Stock: 8679C25077009 Datasheet

Current PartRFQ

ABL-25.000MHZ-B4Y-T

Abracon LLCIn Stock: 914ABL-25.000MHZ-B4Y-T Datasheet

SimilarRFQ

ABLS2-25.000MHZ-B4Y-T

Abracon LLCIn Stock: 1054ABLS2-25.000MHZ-B4Y-T Datasheet

SimilarRFQ

LP250F33CDT

CTS-Frequency ControlsIn Stock: 1138LP250F33CDT Datasheet

SimilarRFQ

LP250F33CET

CTS-Frequency ControlsIn Stock: 1114LP250F33CET Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 9C25077009 is determined by the following critical parameters:

Primary Matching Criteria:

• Frequency: 25 MHz (exact match required)
• Frequency Stability: ±30ppm (exact match required)
• Package / Case: HC-49/US (exact match required)
• Operating Temperature Range: -20°C to 70°C (exact match required)
• Mounting Type: Surface Mount (exact match required)

Secondary Compatibility Parameters:

• Load Capacitance: 20pF (primary specification) or 18pF (acceptable variance within crystal design tolerances)
• ESR: 30 Ohms (primary specification) or 100 Ohms (acceptable variance dependent on circuit design)
• RoHS Compliance: ROHS3 Compliant (required for regulatory alignment)

Substitute parts must maintain identical frequency, stability, package format, temperature range, and surface mount configuration. Variations in load capacitance and ESR are permissible when the substitute part is verified for circuit compatibility and the application circuit is designed to accommodate the specified load capacitance of the substitute component.

Parameter Comparison

Engineering Selection Recommendations

Recommended Primary Substitute: LP250F33CET

The LP250F33CET from CTS-Frequency Controls provides the closest electrical and mechanical alignment to the 9C25077009. This part maintains identical frequency (25 MHz), frequency stability (±30ppm), load capacitance (20pF), ESR (30 Ohms), package format (HC-49/US), mounting type (surface mount), and operating temperature range (-20°C to 70°C). The LP250F33CET carries active product status with ROHS3 compliance and MSL rating of 1 (Unlimited), ensuring long-term availability and regulatory alignment.

Secondary Substitute: LP250F33CDT

The LP250F33CDT from CTS-Frequency Controls is suitable for applications where load capacitance variance is acceptable. This part matches all critical parameters except load capacitance (18pF versus 20pF). The ESR specification remains at 30 Ohms, matching the main part. Circuit verification is required to confirm compatibility with the 18pF load capacitance specification.

Tertiary Substitute: ABLS2-25.000MHZ-B4Y-T

The ABLS2-25.000MHZ-B4Y-T from Abracon LLC maintains frequency, stability, package, mounting type, and temperature range specifications. Load capacitance is specified at 18pF and ESR at 100 Ohms. This part is suitable for applications where ESR tolerance permits 100 Ohms operation. Circuit verification is required to confirm compatibility with both the 18pF load capacitance and 100 Ohms ESR specifications.

Not Recommended: ABL-25.000MHZ-B4Y-T

The ABL-25.000MHZ-B4Y-T from Abracon LLC utilizes through-hole mounting, which is incompatible with the surface mount requirement of the 9C25077009. This part is not suitable for direct substitution in surface mount applications.

Frequently Asked Questions (FAQ)

Q: Can the LP250F33CDT be used as a direct replacement for the 9C25077009?

A: The LP250F33CDT is electrically compatible with the 9C25077009 for frequency and stability specifications. However, the load capacitance differs (18pF versus 20pF). The application circuit must be evaluated to confirm that operation with 18pF load capacitance does not affect frequency accuracy or circuit performance. If the circuit is designed specifically for 20pF load capacitance, the LP250F33CET is the preferred substitute.

Q: What is the significance of the ESR difference between the 9C25077009 (30 Ohms) and the ABLS2-25.000MHZ-B4Y-T (100 Ohms)?

A: ESR affects the crystal's impedance characteristics and power consumption in the oscillator circuit. The 9C25077009 specifies 30 Ohms ESR. The ABLS2-25.000MHZ-B4Y-T specifies 100 Ohms ESR. If the application circuit is designed for 30 Ohms ESR operation, substitution with a 100 Ohms ESR part may result in reduced oscillation amplitude or circuit instability. Circuit verification is required before substitution.

Q: Why is the ABL-25.000MHZ-B4Y-T not suitable as a substitute?

A: The ABL-25.000MHZ-B4Y-T is specified for through-hole mounting, while the 9C25077009 requires surface mount configuration. The mounting type is a critical mechanical parameter that determines PCB assembly compatibility. Through-hole components cannot be directly substituted into surface mount applications without redesigning the PCB footprint and assembly process.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. The 9C25077009 and all listed substitute parts (LP250F33CET, LP250F33CDT, ABLS2-25.000MHZ-B4Y-T, and ABL-25.000MHZ-B4Y-T) carry ROHS3 compliance status, ensuring regulatory alignment for applications subject to RoHS requirements.

Q: What is the difference between MSL rating 1 (Unlimited) and Not Applicable?

A: MSL (Moisture Sensitivity Level) rating 1 (Unlimited) indicates the component has unlimited shelf life without special moisture control measures. MSL rating Not Applicable indicates the component does not require moisture sensitivity classification. Both ratings are acceptable for standard storage and handling conditions. Components with MSL 1 (Unlimited) offer greater flexibility in inventory management and storage duration.

Q: Can the ABLS2-25.000MHZ-B4Y-T be used if the circuit is designed for 18pF load capacitance?

A: Yes. If the application circuit is designed to operate with 18pF load capacitance, the ABLS2-25.000MHZ-B4Y-T is compatible with this specification. However, the ESR specification of 100 Ohms must be verified against the circuit design requirements. If the circuit is optimized for 30 Ohms ESR, substitution with a 100 Ohms ESR part requires circuit evaluation to confirm stable oscillation and acceptable performance.

Q: What is the primary advantage of the LP250F33CET over other substitutes?

A: The LP250F33CET provides the closest electrical match to the 9C25077009, maintaining identical load capacitance (20pF) and ESR (30 Ohms) specifications. This eliminates the need for circuit verification related to load capacitance or ESR variance, reducing design risk and simplifying the substitution process. The LP250F33CET carries active product status, ensuring long-term availability.