TD-7.3728MBD-T MEMS Oscillator Equivalent & Substitute Parts

Part Overview

The TD-7.3728MBD-T is a 7.3728 MHz MEMS-based XO (Standard) oscillator manufactured by TXC CORPORATION. This component operates at 3.3V with CMOS output and includes Enable/Disable functionality. The device is packaged in a 4-SMD, No Lead configuration with a footprint of 2.50mm x 2.00mm and a seated height of 0.80mm maximum.

The TD-7.3728MBD-T carries an Obsolete product status. Locating equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for applications utilizing this frequency and package specification.

Substiute Parts

TD-7.3728MBD-T

TXC CORPORATIONIn Stock: 5732TD-7.3728MBD-T Datasheet

Current PartRFQ

8W-7.3728MBD-T

TXC CORPORATIONIn Stock: 11738W-7.3728MBD-T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TD-7.3728MBD-T is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Frequency: 7.3728 MHz (exact match required)
• Output Type: CMOS
• Supply Voltage: 3.3V
• Function: Enable/Disable
• Frequency Stability: ±25ppm
• Operating Temperature Range: -40°C ~ 85°C
• Package / Case: 4-SMD, No Lead
• Size / Dimension: 2.50mm x 2.00mm
• Mounting Type: Surface Mount
• Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variation Parameters:

• Base Resonator Type: MEMS or Crystal (both acceptable for this application)
• Current - Supply (Max): Variation permitted within design margin
• Height - Seated (Max): Minor variation acceptable within PCB assembly constraints
• Product Status: Active status preferred for obsolete parts

The substitute part 8W-7.3728MBD-T meets all mandatory matching parameters and represents a valid equivalent for the TD-7.3728MBD-T.

Parameter Comparison

Engineering Selection Recommendations

The 8W-7.3728MBD-T is a direct substitute for the obsolete TD-7.3728MBD-T based on the following engineering criteria:

Product Status Alignment: The 8W-7.3728MBD-T carries Active product status, ensuring ongoing availability and manufacturer support. This addresses the supply chain risk associated with the Obsolete TD-7.3728MBD-T.

Electrical Compatibility: Both parts operate at identical frequency (7.3728 MHz), supply voltage (3.3V), output type (CMOS), and frequency stability (±25ppm). The Enable/Disable function is present in both variants. Operating temperature range matches exactly at -40°C ~ 85°C.

Mechanical Compatibility: Both parts utilize the same 4-SMD, No Lead package with identical footprint dimensions of 2.50mm x 2.00mm. The seated height difference of 0.10mm (0.80mm versus 0.90mm) falls within standard PCB assembly tolerances and does not impact board-level compatibility.

Current Consumption: The 8W-7.3728MBD-T draws 15mA maximum supply current compared to 25mA for the TD-7.3728MBD-T. This represents a reduction in power consumption, which is beneficial for battery-powered or power-constrained applications.

Regulatory Compliance: The 8W-7.3728MBD-T provides explicit ROHS3 compliance and REACH Unaffected status. Both parts share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications.

Resonator Technology: The TD-7.3728MBD-T uses MEMS technology while the 8W-7.3728MBD-T uses Crystal technology. Both technologies deliver the specified frequency stability and operating characteristics required for this application.

Frequently Asked Questions (FAQ)

Q: Can the 8W-7.3728MBD-T be used as a direct replacement for the TD-7.3728MBD-T without circuit modifications?

A: Yes. The 8W-7.3728MBD-T is electrically and mechanically compatible with the TD-7.3728MBD-T. Both parts operate at 3.3V, produce CMOS output at 7.3728 MHz, include Enable/Disable functionality, and share identical frequency stability and temperature range specifications. No circuit modifications are required.

Q: What is the significance of the resonator technology difference (MEMS versus Crystal)?

A: Both MEMS and Crystal resonators deliver the specified ±25ppm frequency stability and -40°C ~ 85°C operating range for this application. The technology difference does not affect electrical performance or compatibility. The 8W-7.3728MBD-T's Crystal-based design provides an alternative implementation that meets all functional requirements.

Q: Does the 0.10mm height difference between the two parts affect PCB assembly?

A: No. The height difference (0.80mm for TD-7.3728MBD-T versus 0.90mm for 8W-7.3728MBD-T) is within standard surface mount assembly tolerances. Both parts fit within typical PCB design clearances and reflow oven profiles. No design changes are necessary.

Q: Why does the 8W-7.3728MBD-T consume less current (15mA versus 25mA)?

A: The lower maximum supply current of the 8W-7.3728MBD-T reflects the Crystal resonator implementation and internal circuit design. This reduction in power consumption is an advantage for applications with power constraints or battery operation.

Q: Are there any compliance or certification differences between the two parts?

A: The 8W-7.3728MBD-T provides explicit ROHS3 compliance and REACH Unaffected certification. Both parts share identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications, indicating equivalent regulatory treatment.

Q: Is the 8W-7.3728MBD-T available in the same packaging format?

A: Yes. Both parts use 4-SMD, No Lead packaging with identical 2.50mm x 2.00mm footprint dimensions. The parts are mechanically interchangeable on the PCB.

Q: What is the inventory status of the substitute part?

A: The 8W-7.3728MBD-T is listed as Active product status with 1067 pieces in stock. The TD-7.3728MBD-T is Obsolete with 5655 pieces currently available. For long-term supply assurance, the 8W-7.3728MBD-T is the recommended choice.