TD-32.263MBD-T MEMS Oscillator Equivalent & Substitute Parts

Part Overview

The TD-32.263MBD-T is a 32.263 MHz MEMS-based XO (Standard) oscillator manufactured by TXC CORPORATION. This component operates at 3.3V with CMOS output, Enable/Disable function, 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 system support and procurement planning.

Substiute Parts

TD-32.263MBD-T

TXC CORPORATIONIn Stock: 1154TD-32.263MBD-T Datasheet

Current PartRFQ

8W-32.263MBD-T

TXC CORPORATIONIn Stock: 8398W-32.263MBD-T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the TD-32.263MBD-T is determined by the following critical parameters:

Mandatory Matching Parameters:

• Frequency: 32.263 MHz (exact match required)
• Output Type: CMOS
• Supply Voltage: 3.3V
• Function: Enable/Disable capability
• Package Type: 4-SMD, No Lead
• Physical Dimensions: 0.098" L x 0.079" W (2.50mm x 2.00mm)
• Operating Temperature Range: -40°C ~ 85°C minimum
• Frequency Stability: ±25ppm or better

Acceptable Variation Parameters:

• Base Resonator Type: MEMS or Crystal (both acceptable for functional equivalence)
• Current Supply (Max): Substitute may be lower than original specification
• Height - Seated (Max): Minor variations acceptable within SMD assembly constraints
• Product Status: Active status preferred for long-term availability

The 8W-32.263MBD-T qualifies as a direct substitute based on matching all mandatory parameters while offering improved specifications in current consumption and active product status.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: 8W-32.263MBD-T

The 8W-32.263MBD-T is the recommended substitute for the obsolete TD-32.263MBD-T based on the following engineering criteria:

1. Functional Equivalence: All critical electrical parameters match exactly, including frequency (32.263 MHz), output type (CMOS), supply voltage (3.3V), and frequency stability (±25ppm).

2. Package Compatibility: Identical 4-SMD, No Lead package with matching footprint dimensions (0.098" L x 0.079" W / 2.50mm x 2.00mm), ensuring direct PCB compatibility without layout modifications.

3. Improved Specifications: The substitute offers superior current consumption (10mA vs. 25mA maximum), reducing power dissipation in the application circuit.

4. Active Product Status: The 8W-32.263MBD-T maintains Active status with TXC CORPORATION, ensuring long-term availability and supply chain continuity.

5. Regulatory Compliance: The substitute carries ROHS3 compliance and REACH Unaffected status, meeting current environmental and regulatory requirements.

6. Thermal Compatibility: Operating temperature range (-40°C ~ 85°C) and moisture sensitivity level (MSL 1) remain unchanged, maintaining thermal and environmental performance characteristics.

7. Height Consideration: The substitute height (0.035" / 0.90mm) is marginally higher than the original (0.031" / 0.80mm). This 0.005" (0.10mm) difference is within standard SMD assembly tolerances and does not impact PCB clearance in typical applications.

Frequently Asked Questions (FAQ)

Q: Can the 8W-32.263MBD-T be used as a direct replacement for the TD-32.263MBD-T without circuit modifications?

A: Yes. The 8W-32.263MBD-T is a direct substitute with identical electrical specifications, output characteristics, and package footprint. No circuit modifications are required. The component operates at the same frequency (32.263 MHz), voltage (3.3V), and provides the same Enable/Disable function with CMOS output.

Q: What is the difference between the MEMS resonator in the TD-32.263MBD-T and the Crystal resonator in the 8W-32.263MBD-T?

A: Both resonator types deliver identical frequency stability (±25ppm) and operating characteristics for this application. The primary difference is the resonator technology. The substitute uses a crystal-based approach while maintaining all specified electrical performance parameters.

Q: Does the height difference (0.031" vs. 0.035") affect PCB assembly or clearance?

A: The 0.004" (0.10mm) height difference is within standard SMD assembly tolerances and does not impact typical PCB clearance requirements. Verify clearance in your specific application if height-constrained designs are present.

Q: Is the 8W-32.263MBD-T compatible with existing PCB layouts designed for the TD-32.263MBD-T?

A: Yes. The 4-SMD, No Lead package dimensions are identical (0.098" L x 0.079" W / 2.50mm x 2.00mm), ensuring footprint compatibility. No PCB layout modifications are necessary.

Q: What are the regulatory compliance advantages of the 8W-32.263MBD-T?

A: The substitute carries ROHS3 compliance and REACH Unaffected status, meeting current environmental regulations. Both parts share the same ECCN (EAR99) and HTSUS (8542.39.0001) classifications.

Q: Why is the TD-32.263MBD-T marked as Obsolete?

A: Product obsolescence is determined by the manufacturer. The 8W-32.263MBD-T maintains Active status with TXC CORPORATION, providing continued availability and supply chain support for this frequency and package specification.

Q: Does the lower current consumption (10mA vs. 25mA) of the substitute affect performance?

A: No. The lower maximum current specification of the 8W-32.263MBD-T represents improved efficiency and does not impact functional performance. The substitute delivers the same frequency accuracy, stability, and output characteristics while consuming less power.

Q: Are both parts available from the same manufacturer?

A: Yes. Both the TD-32.263MBD-T and 8W-32.263MBD-T are manufactured by TXC CORPORATION, ensuring consistent quality standards and technical support.