TXC CORPORATION 7B25000096 Equivalent & Substitute Parts

Part Overview

The TXC CORPORATION 7B25000096 is a 25 MHz fundamental mode crystal oscillator designed for surface mount applications. This component operates at 25.0000 MHz with ±30 ppm frequency tolerance and 13 pF load capacitance. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and maintenance requirements.

Substiute Parts

7B25000096

TXC CORPORATIONIn Stock: 9447B25000096 Datasheet

Current PartRFQ

403C35L25M00000

CTS-Frequency ControlsIn Stock: 5372403C35L25M00000 Datasheet

SimilarRFQ

405C35B25M00000

CTS-Frequency ControlsIn Stock: 7098405C35B25M00000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TXC CORPORATION 7B25000096 is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Frequency: 25.0000 MHz (exact match required)
• Frequency Tolerance: ±30 ppm (exact match required)
• Frequency Stability: ±50 ppm (exact match required)
• Operating Mode: Fundamental (exact match required)
• Operating Temperature Range: -20°C to 70°C (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Package / Case: 4-SMD, No Lead (exact match required)

Secondary Compatibility Parameters (allowable variation):

• Load Capacitance: 12 pF to 13 pF (within circuit design tolerance)
• ESR (Equivalent Series Resistance): 40 to 60 Ohms (within circuit design tolerance)
• Physical Dimensions: Variations within SMD footprint compatibility
• Height - Seated (Max): Up to 1.05 mm (within PCB assembly clearance)

The substitute parts identified below satisfy all primary criteria and fall within acceptable ranges for secondary parameters.

Parameter Comparison

Engineering Selection Recommendations

CTS-Frequency Controls 405C35B25M00000 (Primary Substitute)

The 405C35B25M00000 is the optimal substitute for the obsolete TXC CORPORATION 7B25000096. This part maintains identical electrical specifications (25 MHz, ±30 ppm tolerance, ±50 ppm stability, 13 pF load capacitance) and identical physical dimensions (5.00 x 3.20 mm). The ESR of 50 Ohms is within acceptable tolerance of the original 40 Ohms specification. The part is currently active in production with ROHS3 compliance and REACH unaffected status, ensuring long-term availability and regulatory compliance.

CTS-Frequency Controls 403C35L25M00000 (Secondary Substitute)

The 403C35L25M00000 provides an alternative substitute with identical electrical specifications but differs in physical dimensions (3.20 x 2.50 mm versus 5.00 x 3.20 mm) and load capacitance (12 pF versus 13 pF). This part is suitable only when PCB layout permits the smaller footprint and when the 12 pF load capacitance is compatible with circuit design parameters. The ESR of 60 Ohms remains within acceptable tolerance. This part is active in production with ROHS3 compliance and REACH unaffected status.

Frequently Asked Questions (FAQ)

Q: Can the 403C35L25M00000 be used as a direct replacement for the 7B25000096?

A: The 403C35L25M00000 is electrically compatible but has different physical dimensions (3.20 x 2.50 mm versus 5.00 x 3.20 mm) and load capacitance (12 pF versus 13 pF). Direct PCB substitution is not possible without layout modification. Use only when circuit design accommodates 12 pF load capacitance and PCB footprint allows the smaller package size.

Q: What is the difference in ESR between the main part and substitutes?

A: The original 7B25000096 has 40 Ohms ESR. The 405C35B25M00000 substitute has 50 Ohms ESR, and the 403C35L25M00000 has 60 Ohms ESR. Both substitutes operate within acceptable ESR tolerance for 25 MHz crystal applications in standard circuit configurations.

Q: Are both substitute parts RoHS compliant?

A: Yes. The 405C35B25M00000 and 403C35L25M00000 are both ROHS3 compliant with REACH unaffected status, meeting current environmental and regulatory requirements.

Q: What is the primary advantage of the 405C35B25M00000 over the 403C35L25M00000?

A: The 405C35B25M00000 maintains identical physical dimensions (5.00 x 3.20 mm) and load capacitance (13 pF) as the original 7B25000096, enabling direct PCB substitution without design modification. The 403C35L25M00000 requires PCB layout changes due to smaller footprint and different load capacitance.

Q: Can load capacitance differences affect circuit performance?

A: Load capacitance is a critical parameter for crystal oscillator circuit design. The 12 pF load capacitance of the 403C35L25M00000 differs from the 13 pF specification of the original part. Substitution is valid only when circuit design parameters accommodate this variation. The 405C35B25M00000 maintains the 13 pF specification, eliminating this consideration.

Q: What is the moisture sensitivity level for these parts?

A: All three parts (7B25000096, 403C35L25M00000, and 405C35B25M00000) have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage and handling.

Q: Are there inventory considerations for these substitutes?

A: The 405C35B25M00000 has 7019 pieces in stock, and the 403C35L25M00000 has 5320 pieces in stock, both providing adequate availability for production requirements.