TC-54.000MBD-T Equivalent & Substitute Parts

Part Overview

The TC-54.000MBD-T is a 54 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 classified as Obsolete, necessitating identification of equivalent substitute components that maintain functional and mechanical compatibility for ongoing system support and new design implementations.

Substiute Parts

TC-54.000MBD-T

TXC CORPORATIONIn Stock: 1091TC-54.000MBD-T Datasheet

Current PartRFQ

7X-54.000MBD-T

TXC CORPORATIONIn Stock: 7987X-54.000MBD-T Datasheet

DirectRFQ

FK5400007

Diodes IncorporatedIn Stock: 949FK5400007 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TC-54.000MBD-T are qualified based on the following critical parameters:

Mandatory Matching Parameters:

• Frequency: 54 MHz
• Output Type: CMOS
• Supply Voltage: 3.3V
• Function: Enable/Disable
• Package / Case: 4-SMD, No Lead
• Mounting Type: Surface Mount
• Physical Dimensions: 0.126" L x 0.098" W (3.20mm x 2.50mm)
• Frequency Stability: ±25ppm
• Operating Temperature Range: -40°C ~ 85°C
• Moisture Sensitivity Level: 1 (Unlimited)

Allowed Variation Parameters:

• Base Resonator Type: MEMS or Crystal (both acceptable for this application)
• Current - Supply (Max): Variation permitted within operational limits
• Height - Seated (Max): Variation permitted within PCB assembly constraints
• Product Status: Active substitutes preferred for Obsolete main part

The two identified substitutes meet all mandatory parameters while offering active product status and enhanced compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

7X-54.000MBD-T (TXC CORPORATION): This substitute maintains manufacturer continuity with the original TC-54.000MBD-T, both sourced from TXC CORPORATION. The 7X series is Active status, providing long-term availability. It delivers lower maximum supply current (15mA versus 25mA), reducing power consumption. The component is RoHS Compliant and REACH Unaffected. Height increase from 0.80mm to 1.10mm requires PCB assembly clearance verification. This option is suitable for applications prioritizing manufacturer consistency and power efficiency.

FK5400007 (Diodes Incorporated): This substitute is manufactured by Diodes Incorporated under the SaRonix-eCera™ FK series and maintains Active product status. It provides intermediate supply current (18mA) and includes specified disable-mode current (10µA). The component is ROHS3 Compliant and REACH Unaffected, meeting current regulatory requirements. Height of 1.15mm requires PCB assembly clearance verification. This option is suitable for applications requiring multi-source qualification and enhanced compliance documentation.

Height Consideration: Both substitutes exhibit increased seated height compared to the original part (1.10mm and 1.15mm versus 0.80mm). PCB layout and component clearance must be evaluated during integration.

Frequently Asked Questions (FAQ)

Q: Can the 7X-54.000MBD-T directly replace the TC-54.000MBD-T without PCB modifications?

A: The 7X-54.000MBD-T maintains identical footprint and pinout compatibility. However, the increased height (1.10mm versus 0.80mm) requires verification of available clearance above the component on the PCB. If clearance exists, direct replacement is possible without PCB modifications.

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

A: The TC-54.000MBD-T uses MEMS technology, while both substitutes use Crystal resonators. Both technologies deliver the specified ±25ppm frequency stability and identical electrical performance at 54 MHz, 3.3V, CMOS output. The selection between technologies depends on application-specific requirements not specified in the provided parameters.

Q: Are the FK5400007 and 7X-54.000MBD-T interchangeable?

A: Both parts meet all mandatory electrical and mechanical parameters. They are functionally interchangeable from an electrical standpoint. However, they originate from different manufacturers (Diodes Incorporated versus TXC CORPORATION), which may affect supply chain, lead times, and compliance documentation requirements. Height variation (1.10mm versus 1.15mm) is minimal and both require clearance verification.

Q: What does the Enable/Disable function provide?

A: The Enable/Disable function allows the oscillator output to be controlled via an external signal, enabling power management by stopping oscillation when not required. All three parts (main and substitutes) support this function identically.

Q: Is RoHS compliance required for my application?

A: The original TC-54.000MBD-T does not specify RoHS status. Both substitutes are RoHS Compliant (7X-54.000MBD-T) or ROHS3 Compliant (FK5400007). If RoHS compliance is a system requirement, either substitute is acceptable. If RoHS compliance is not required, the original part specifications remain valid.

Q: What is the significance of MSL 1 (Unlimited)?

A: Moisture Sensitivity Level 1 (Unlimited) indicates the component has minimal moisture sensitivity and does not require special moisture control during storage or handling. All three parts share this specification, simplifying inventory management.

Q: Can I use these oscillators in high-temperature applications above 85°C?

A: No. All three parts specify an operating temperature range of -40°C to 85°C. Applications requiring operation above 85°C require components with extended temperature specifications not represented in this comparison.