7C-24.576MBB-T CMOS Oscillator Equivalent & Substitute Parts

Part Overview

The 7C-24.576MBB-T is a 24.576 MHz XO (Standard) CMOS oscillator manufactured by TXC CORPORATION, designed for applications requiring precise frequency generation with enable/disable functionality. This surface mount device operates at 3.3V supply voltage and is housed in a 4-SMD, No Lead package measuring 5.00mm x 3.20mm. The part is currently active in production with 1102 pieces available in new original inventory. Substitute parts are identified when equivalent electrical and mechanical specifications are maintained while offering improved performance characteristics or enhanced availability.

Substiute Parts

7C-24.576MBB-T

TXC CORPORATIONIn Stock: 11867C-24.576MBB-T Datasheet

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7C-24.576MBA-T

TXC CORPORATIONIn Stock: 19927C-24.576MBA-T Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 7C-24.576MBB-T are identified based on strict equivalence of critical electrical and mechanical parameters. The substitution logic is based on the following criteria:

Mandatory Equivalence Parameters:

• Frequency: 24.576 MHz (exact match required)
• Output Type: CMOS
• Supply Voltage: 3.3V
• Function: Enable/Disable capability
• Package / Case: 4-SMD, No Lead
• Physical Dimensions: 5.00mm x 3.20mm
• Height - Seated (Max): 1.40mm
• Mounting Type: Surface Mount
• Operating Temperature Range: -10°C ~ 70°C
• Current - Supply (Max): 30mA

Allowable Variation Parameters:

• Frequency Stability: May improve (tighter tolerance) without affecting substitution validity
• Inventory availability and product status do not affect electrical substitutability

The 7C-24.576MBA-T meets all mandatory equivalence criteria and represents a direct substitute with improved frequency stability specification.

Parameter Comparison

Engineering Selection Recommendations

Substitution Validity: The 7C-24.576MBA-T is a valid direct substitute for the 7C-24.576MBB-T. Both parts are manufactured by TXC CORPORATION, share identical electrical specifications, mechanical dimensions, and compliance certifications. Both parts maintain Active product status and are RoHS Compliant with REACH Unaffected designation.

Differentiation Factor: The primary distinction between these parts is the frequency stability specification. The 7C-24.576MBA-T provides ±25ppm stability compared to the ±50ppm of the 7C-24.576MBB-T. This represents an improvement in frequency accuracy without any compromise to other electrical or mechanical parameters.

Selection Basis:

• For applications requiring standard frequency stability (±50ppm tolerance): 7C-24.576MBB-T is suitable
• For applications requiring improved frequency stability (±25ppm tolerance): 7C-24.576MBA-T is the appropriate selection
• Both parts are suitable for identical PCB layouts and circuit implementations
• Inventory availability favors the 7C-24.576MBA-T with 1964 pieces in stock versus 1102 pieces for the main part

Frequently Asked Questions (FAQ)

Q: Can the 7C-24.576MBA-T be used as a direct replacement for the 7C-24.576MBB-T on existing PCBs?

A: Yes. Both parts share identical package dimensions (5.00mm x 3.20mm), height (1.40mm), pin configuration (4-SMD, No Lead), and electrical specifications (24.576 MHz, 3.3V, CMOS output, Enable/Disable function). No PCB modifications are required.

Q: What is the difference between these two oscillators?

A: The 7C-24.576MBA-T provides improved frequency stability of ±25ppm compared to the ±50ppm of the 7C-24.576MBB-T. All other specifications including frequency, voltage, output type, temperature range, and current consumption are identical.

Q: Are both parts RoHS compliant?

A: Yes. Both the 7C-24.576MBB-T and 7C-24.576MBA-T are RoHS Compliant with REACH Unaffected status and carry Moisture Sensitivity Level 1 (Unlimited).

Q: Which part should be selected for new designs?

A: Selection depends on frequency stability requirements. For applications where ±25ppm stability is acceptable or beneficial, the 7C-24.576MBA-T is recommended due to improved performance and higher inventory availability. For applications with ±50ppm tolerance specifications, either part is suitable.

Q: Are there any thermal or current consumption differences?

A: No. Both parts operate within the identical temperature range (-10°C ~ 70°C) and have identical maximum supply current specifications (30mA).

Q: What is the Moisture Sensitivity Level for both parts?

A: Both parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage and handling.