7W-12.288MBA-T CMOS Oscillator Equivalent & Substitute Parts

Part Overview

The 7W-12.288MBA-T is a 12.288 MHz XO (Standard) CMOS oscillator manufactured by TXC CORPORATION. This component operates at 3.3V with Enable/Disable functionality and is housed in a 4-SMD, No Lead package. The part is currently classified as Obsolete, making identification of equivalent and substitute components essential for ongoing production support, design updates, and inventory management. Substitute parts must maintain identical electrical performance and mechanical compatibility to ensure direct replacement capability.

Substiute Parts

7W-12.288MBA-T

TXC CORPORATIONIn Stock: 10677W-12.288MBA-T Datasheet

Current PartRFQ

FN1220026

Diodes IncorporatedIn Stock: 1233FN1220026 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 7W-12.288MBA-T is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Frequency: 12.288 MHz (exact match required)
• Output Type: CMOS
• Supply Voltage: 3.3V
• Function: Enable/Disable capability
• Frequency Stability: ±25ppm
• Package Type: 4-SMD, No Lead
• Package Dimensions: 0.276" L x 0.197" W (7.00mm x 5.00mm)
• Mounting Type: Surface Mount

The substitute part FN1220026 (Diodes Incorporated) meets all mandatory matching parameters. Both components share identical frequency, output characteristics, supply voltage, enable/disable functionality, frequency stability, and package footprint. Variations in maximum supply current, operating temperature range, and seated height do not preclude substitution when the electrical and mechanical requirements of the application are satisfied by the substitute part's specifications.

Parameter Comparison

Engineering Selection Recommendations

The FN1220026 (Diodes Incorporated) is a direct substitute for the obsolete 7W-12.288MBA-T. Selection of this substitute is supported by the following factors:

Electrical Equivalence: Both components operate at identical frequency (12.288 MHz), output type (CMOS), supply voltage (3.3V), and frequency stability (±25ppm). Enable/Disable functionality is preserved.

Mechanical Compatibility: Package type, footprint dimensions (7.00mm x 5.00mm), and mounting type are identical. The substitute's maximum seated height of 0.071" (1.80mm) exceeds the original 0.056" (1.42mm); PCB layout clearance must be verified for applications with height constraints.

Regulatory Compliance: Both components maintain RoHS compliance, REACH unaffected status, and identical export classification (EAR99). The substitute carries ROHS3 certification, meeting current regulatory requirements.

Performance Characteristics: The substitute's maximum supply current of 15mA is lower than the original 20mA specification, reducing power consumption. Operating temperature range of -20°C ~ 70°C exceeds the original -10°C ~ 70°C range, providing broader environmental compatibility. Disable mode current specification (10µA) is provided for the substitute.

Product Status: The substitute part is Active, ensuring long-term availability and supply chain continuity compared to the Obsolete status of the original component.

Frequently Asked Questions (FAQ)

Q: Can FN1220026 be used as a direct replacement for 7W-12.288MBA-T in existing designs?

A: Yes. Both components share identical frequency, output type, supply voltage, enable/disable function, frequency stability, and package footprint. Verify that the substitute's maximum seated height of 1.80mm accommodates your PCB layout clearance requirements.

Q: What are the key differences between these two oscillators?

A: The primary differences are manufacturer (TXC vs. Diodes Incorporated), product status (Obsolete vs. Active), maximum supply current (20mA vs. 15mA), operating temperature range (-10°C to 70°C vs. -20°C to 70°C), and seated height (1.42mm vs. 1.80mm). All critical electrical and mechanical parameters remain equivalent.

Q: Are there any compliance or certification concerns with substitution?

A: No. Both components are RoHS compliant, REACH unaffected, and classified as EAR99 for export purposes. The substitute carries ROHS3 certification, meeting current regulatory standards.

Q: Does the lower maximum supply current of FN1220026 affect circuit performance?

A: The substitute's 15mA maximum supply current is lower than the original 20mA. This reduction does not affect performance if your circuit design operates within the substitute's current specification. Verify that your application's current draw does not exceed 15mA.

Q: Is the increased seated height of FN1220026 a concern?

A: The substitute's maximum seated height is 1.80mm compared to the original 1.42mm. This 0.38mm difference must be evaluated against your PCB layout clearance. If height-constrained applications exist, physical verification is necessary.

Q: Why is the original 7W-12.288MBA-T listed as Obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The FN1220026 substitute is Active and available from Diodes Incorporated, ensuring continued supply for new designs and production support.

Q: Are there additional substitute options beyond FN1220026?

A: Based on the provided input parameters, FN1220026 is the identified substitute. The FN1220026 datasheet references additional Diodes Incorporated models (FN1220024, FN1220025) within the same series; however, these are not included in the current substitution analysis.