TC-75.000MBD-T Equivalent & Substitute Parts

Part Overview

The TC-75.000MBD-T is a 75 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 surface mount package. The part is currently classified as Obsolete, making identification of functionally equivalent substitutes essential for ongoing design support and procurement continuity. Substitute parts must maintain identical electrical performance and mechanical compatibility while offering active product status and improved supply availability.

Substiute Parts

TC-75.000MBD-T

TXC CORPORATIONIn Stock: 1105TC-75.000MBD-T Datasheet

Current PartRFQ

7X-75.000MBD-T

TXC CORPORATIONIn Stock: 10207X-75.000MBD-T Datasheet

DirectRFQ

ASE-75.000MHZ-LR-T

Abracon LLCIn Stock: 1057ASE-75.000MHZ-LR-T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TC-75.000MBD-T is determined by strict alignment with the following critical parameters:

Mandatory Matching Parameters:

• Frequency: 75 MHz (exact match required)
• Output Type: CMOS
• Supply Voltage: 3.3V
• Function: Enable/Disable capability
• Frequency Stability: ±25ppm
• Operating Temperature Range: -40°C ~ 85°C
• Package / Case: 4-SMD, No Lead
• Mounting Type: Surface Mount
• Physical Dimensions: 0.126" L x 0.098" W (3.20mm x 2.50mm)
• Moisture Sensitivity Level: 1 (Unlimited)

Both identified substitute parts (7X-75.000MBD-T and ASE-75.000MHZ-LR-T) satisfy all mandatory matching parameters. Variations in current consumption and seated height are within acceptable tolerances for this component category and do not affect functional substitution.

Parameter Comparison

Engineering Selection Recommendations

7X-75.000MBD-T (TXC CORPORATION)

This substitute is manufactured by the same supplier as the main part (TXC CORPORATION) and maintains identical electrical specifications. The 7X series is Active status, ensuring long-term availability. Current consumption is reduced to 15mA maximum, providing improved power efficiency compared to the 30mA specification of the TC series. The seated height increases from 0.80mm to 1.10mm; this difference must be evaluated against PCB layout constraints and enclosure clearances. RoHS Compliance certification is provided. This option is recommended for designs where power consumption optimization is beneficial and the increased height does not present mechanical conflicts.

ASE-75.000MHZ-LR-T (Abracon LLC)

This substitute is supplied by Abracon LLC, a qualified alternative manufacturer, and maintains all critical electrical parameters. The ASE series is Active status with confirmed long-term supply. Current consumption is 24mA, positioned between the main part and the 7X alternative. The seated height is 1.20mm, the highest among the three options. ROHS3 Compliance and REACH Unaffected certifications are provided. This option is recommended for designs requiring multi-source qualification or where Abracon supply chain relationships are established. The Tape & Reel packaging format supports high-volume manufacturing workflows.

Both substitutes are electrically and mechanically compatible with the TC-75.000MBD-T. Selection between them depends on power budget requirements, PCB height constraints, and supply chain preferences.

Frequently Asked Questions (FAQ)

Q: Can the 7X-75.000MBD-T and ASE-75.000MHZ-LR-T be used interchangeably with the TC-75.000MBD-T?

A: Yes. Both substitutes maintain identical frequency (75 MHz), output type (CMOS), supply voltage (3.3V), Enable/Disable function, frequency stability (±25ppm), operating temperature range (-40°C ~ 85°C), and package dimensions (0.126" L x 0.098" W, 4-SMD No Lead). They are direct functional equivalents for circuit-level applications.

Q: What is the impact of the increased seated height in the substitute parts?

A: The TC-75.000MBD-T has a maximum seated height of 0.80mm. The 7X-75.000MBD-T increases this to 1.10mm, and the ASE-75.000MHZ-LR-T to 1.20mm. These differences must be verified against PCB layout, component stacking requirements, and enclosure clearances. If height is critical, the 7X option provides the smallest increase.

Q: Does the difference in current consumption affect circuit design?

A: The TC-75.000MBD-T specifies 30mA maximum supply current. The 7X-75.000MBD-T reduces this to 15mA, and the ASE-75.000MHZ-LR-T specifies 24mA. Lower current consumption in the 7X option improves power efficiency. Verify that power supply capacity and current budgets accommodate the selected substitute. All three parts operate within standard 3.3V supply rails.

Q: What is the difference between MEMS and Crystal resonators in these parts?

A: The main part (TC-75.000MBD-T) uses a MEMS resonator. Both substitutes (7X-75.000MBD-T and ASE-75.000MHZ-LR-T) use Crystal resonators. Both technologies deliver the same frequency stability (±25ppm) and operating characteristics for this application. The resonator technology difference does not affect functional substitution.

Q: Are compliance certifications important for my application?

A: The 7X-75.000MBD-T is RoHS Compliant. The ASE-75.000MHZ-LR-T is ROHS3 Compliant. Both are REACH Unaffected. If your application requires RoHS or REACH compliance, both substitutes satisfy these requirements. The main part (TC-75.000MBD-T) does not specify compliance status. Verify compliance requirements against your design specifications and regional regulations.

Q: Can I use the ASE-75.000MHZ-LR-T in Tape & Reel packaging for low-volume applications?

A: The ASE-75.000MHZ-LR-T is supplied in Tape & Reel (TR) format, which is optimized for automated assembly and high-volume production. For low-volume or prototype applications, confirm that your assembly process supports Tape & Reel format or request alternative packaging from the supplier.

Q: Why is the TC-75.000MBD-T classified as Obsolete?

A: Obsolete status indicates that the manufacturer has discontinued active production and support. The 7X-75.000MBD-T and ASE-75.000MHZ-LR-T are both Active status parts, ensuring continued availability, technical support, and supply chain stability for new designs and ongoing production.