Equivalent & Substitute Parts for 9C-4.9152MAAK-T

Part Overview

The 9C-4.9152MAAK-T is a 4.9152 MHz crystal oscillator manufactured by TXC CORPORATION, designed for surface mount applications in HC-49/US package format. This component operates at ±30ppm frequency stability with 20pF load capacitance and 150 Ohms equivalent series resistance (ESR). The part is classified as obsolete, necessitating identification of active substitute components that maintain electrical and mechanical compatibility for continued system integration and production support.

Substiute Parts

9C-4.9152MAAK-T

TXC CORPORATIONIn Stock: 9299C-4.9152MAAK-T Datasheet

Current PartRFQ

ABL-4.9152MHZ-B4Y-T

Abracon LLCIn Stock: 1071ABL-4.9152MHZ-B4Y-T Datasheet

SimilarRFQ

ABLS2-4.9152MHZ-B4Y-T

Abracon LLCIn Stock: 1063ABLS2-4.9152MHZ-B4Y-T Datasheet

SimilarRFQ

LP049F33CDT

CTS-Frequency ControlsIn Stock: 1146LP049F33CDT Datasheet

SimilarRFQ

LP049F33CET

CTS-Frequency ControlsIn Stock: 1000LP049F33CET Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 9C-4.9152MAAK-T is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters for Substitution:

• Frequency: 4.9152 MHz (exact match required)
• Frequency Stability: ±30ppm (exact match required)
• Operating Mode: Fundamental (exact match required)
• Operating Temperature Range: -20°C ~ 70°C (exact match required)
• Package / Case: HC-49/US (exact match required)

Allowable Variation Parameters:

• Load Capacitance: 18pF or 20pF (within circuit design tolerance)
• ESR: 120 Ohms to 180 Ohms (within circuit design tolerance)
• Mounting Type: Surface Mount or Through Hole (application-dependent)

Substitute parts are grouped based on these criteria. All identified substitutes maintain the core frequency, stability, operating mode, temperature range, and package specifications. Variations in load capacitance and ESR are permissible within standard circuit design margins for 4.9152 MHz crystal applications.

Parameter Comparison

Engineering Selection Recommendations

For Surface Mount Applications (Direct Replacement):

LP049F33CET (CTS-Frequency Controls) is the primary equivalent for surface mount designs requiring 20pF load capacitance. This part maintains identical load capacitance specification with lower ESR (120 Ohms vs. 150 Ohms), which improves circuit performance margins. Product status is Active with full ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

ABLS2-4.9152MHZ-B4Y-T (Abracon LLC) serves as an alternative surface mount substitute with 18pF load capacitance and 180 Ohms ESR. This part is Active status with ROHS3 compliance. Selection depends on circuit design tolerance for load capacitance variation.

LP049F33CDT (CTS-Frequency Controls) is a secondary surface mount option with 18pF load capacitance and 120 Ohms ESR. This part is Active status with ROHS3 compliance and unlimited MSL rating.

For Through Hole Applications:

ABL-4.9152MHZ-B4Y-T (Abracon LLC) is the only through hole substitute identified, featuring 18pF load capacitance and 180 Ohms ESR. This part is Active status with ROHS3 compliance. Selection requires PCB redesign for through hole mounting.

Compliance Considerations:

All substitute parts maintain ROHS3 compliance and EAR99 export classification. CTS-Frequency Controls parts (LP049F33CET and LP049F33CDT) carry REACH Unaffected status, while Abracon parts carry REACH Affected status. Selection should account for supply chain compliance requirements specific to end-use applications.

Frequently Asked Questions (FAQ)

Q: Can LP049F33CET replace 9C-4.9152MAAK-T in existing designs without circuit modification?

A: LP049F33CET maintains identical frequency (4.9152 MHz), frequency stability (±30ppm), load capacitance (20pF), operating temperature range (-20°C ~ 70°C), and HC-49/US package specification. The lower ESR (120 Ohms vs. 150 Ohms) improves circuit performance margins. No circuit modification is required for this substitution in surface mount applications.

Q: What is the impact of load capacitance variation between 20pF and 18pF?

A: Load capacitance variation affects crystal oscillation frequency and circuit tuning. Substitutes with 18pF load capacitance (ABLS2-4.9152MHZ-B4Y-T, LP049F33CDT, ABL-4.9152MHZ-B4Y-T) require circuit design verification to confirm frequency stability remains within ±30ppm specification. Circuit designers must evaluate load capacitance tolerance in their specific application.

Q: Can ABL-4.9152MHZ-B4Y-T be used as a direct replacement for surface mount applications?

A: ABL-4.9152MHZ-B4Y-T is a through hole component, not surface mount. Direct replacement in surface mount PCB designs is not possible without PCB redesign and component footprint modification. For surface mount applications, use LP049F33CET, ABLS2-4.9152MHZ-B4Y-T, or LP049F33CDT.

Q: Are all substitute parts ROHS3 compliant?

A: All identified substitute parts (LP049F33CET, ABLS2-4.9152MHZ-B4Y-T, LP049F33CDT, ABL-4.9152MHZ-B4Y-T) are ROHS3 compliant. Compliance with REACH regulations varies: CTS-Frequency Controls parts are REACH Unaffected, while Abracon parts are REACH Affected. Verify REACH compliance requirements for your specific supply chain and end-use application.

Q: What is the difference between ESR values of 120 Ohms, 150 Ohms, and 180 Ohms?

A: Equivalent Series Resistance (ESR) affects crystal circuit startup characteristics and power consumption. Lower ESR (120 Ohms) provides faster startup and lower power dissipation. Higher ESR (180 Ohms) may require circuit design adjustment for reliable oscillation. The original 9C-4.9152MAAK-T specifies 150 Ohms ESR. Substitutes with 120 Ohms ESR improve performance; substitutes with 180 Ohms ESR require circuit verification.

Q: What is the product status significance for component selection?

A: The 9C-4.9152MAAK-T is classified as Obsolete, indicating discontinued manufacturing and limited future availability. All identified substitutes are Active status, ensuring continued manufacturing support, availability, and supply chain reliability for production and long-term system support.