TC-49.152MBE-T Equivalent & Substitute Parts

Part Overview

The TC-49.152MBE-T is a 49.152 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, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and field replacement applications.

Substiute Parts

TC-49.152MBE-T

TXC CORPORATIONIn Stock: 1000TC-49.152MBE-T Datasheet

Current PartRFQ

7X-49.152MBE-T

TXC CORPORATIONIn Stock: 10147X-49.152MBE-T Datasheet

DirectRFQ

7X49172001

TXC CORPORATIONIn Stock: 10477X49172001 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TC-49.152MBE-T is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Frequency: 49.152 MHz (exact match required)
• Output Type: CMOS
• Supply Voltage: 3.3V
• Function: Enable/Disable capability
• Frequency Stability: ±50ppm
• Operating Temperature Range: -40°C ~ 85°C
• Package / Case: 4-SMD, No Lead
• Mounting Type: Surface Mount
• Moisture Sensitivity Level: MSL 1

Allowable Variations:

• Base Resonator Type: MEMS or Crystal (both acceptable for this application)
• Packaging Format: Bulk or Tape & Reel (TR)
• Product Status: Active preferred over Obsolete
• Supply Current: Variations permitted within component design specifications

The identified substitute parts (7X-49.152MBE-T and 7X49172001) satisfy all mandatory matching parameters while offering the advantage of Active product status and enhanced compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: 7X-49.152MBE-T

The 7X-49.152MBE-T is the preferred substitute for the obsolete TC-49.152MBE-T. This part maintains electrical equivalence across all critical parameters while offering Active product status. The component is RoHS Compliant and REACH Unaffected, providing enhanced regulatory compliance for new designs and production continuity. The maximum seated height increases from 0.031" to 0.043", which remains compatible with standard PCB assembly processes and clearance requirements for 4-SMD packages. Supply current is reduced to 20mA maximum, representing improved power efficiency. Availability of 979 pieces in stock supports immediate procurement.

Secondary Substitute: 7X49172001

The 7X49172001 serves as an alternative substitute with identical electrical specifications and Active product status. This part also maintains RoHS Compliance and REACH Unaffected status. The seated height matches the 7X-49.152MBE-T at 0.043" maximum. Supply current specification is not provided for this variant. Inventory of 1004 pieces supports procurement requirements. This part number may be preferred in specific supply chain or packaging scenarios where Tape & Reel format is not required.

Substitution Basis:

Both substitute parts are qualified for direct replacement based on:

• Identical frequency, output type, supply voltage, and function
• Matching frequency stability and operating temperature range
• Identical package dimensions and mounting type
• Equivalent moisture sensitivity classification
• Active product status ensuring long-term availability
• Enhanced regulatory compliance certifications

The height differential (0.80mm vs. 1.10mm) does not preclude substitution for standard surface mount applications but should be verified against specific PCB assembly clearance requirements.

Frequently Asked Questions (FAQ)

Q: Can the 7X-49.152MBE-T directly replace the TC-49.152MBE-T in existing designs?

A: Yes. The 7X-49.152MBE-T is electrically and mechanically equivalent across all critical parameters: frequency, output type, supply voltage, function, frequency stability, operating temperature range, and package dimensions. The increase in maximum seated height from 0.031" to 0.043" is within standard PCB assembly tolerances for 4-SMD packages and does not affect functionality.

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

A: Both MEMS and Crystal resonators are acceptable for this application as they meet the identical electrical specifications (49.152 MHz, ±50ppm stability, 3.3V CMOS output). The TC-49.152MBE-T uses MEMS technology, while the 7X-49.152MBE-T and 7X49172001 use Crystal technology. Both technologies deliver the required frequency stability and operating characteristics.

Q: Why is the TC-49.152MBE-T classified as Obsolete?

A: The TC-49.152MBE-T has reached end-of-life status in TXC CORPORATION's product portfolio. The 7X series variants (7X-49.152MBE-T and 7X49172001) represent the current Active product line for this frequency and specification set, ensuring continued availability and support.

Q: Are there packaging format differences between the substitute parts?

A: The 7X-49.152MBE-T is available in Tape & Reel (TR) format, suitable for automated assembly processes. The 7X49172001 packaging format is not specified but may be available in alternative formats. Both parts are housed in identical 4-SMD, No Lead packages with matching footprints.

Q: Do the substitute parts meet RoHS and REACH requirements?

A: Yes. Both 7X-49.152MBE-T and 7X49172001 are RoHS Compliant and REACH Unaffected, providing compliance for applications subject to these regulatory frameworks. The original TC-49.152MBE-T compliance status is not specified.

Q: What is the impact of the reduced supply current in the 7X-49.152MBE-T?

A: The 7X-49.152MBE-T specifies a maximum supply current of 20mA compared to 25mA for the TC-49.152MBE-T. This reduction represents improved power efficiency and does not affect functional compatibility. Designs operating within the 20mA specification will experience lower power consumption.

Q: Can both substitute parts be used interchangeably in the same design?

A: Yes. Both 7X-49.152MBE-T and 7X49172001 meet identical electrical and mechanical specifications for the 49.152 MHz frequency, 3.3V supply, CMOS output, and Enable/Disable function. Selection between them may be based on packaging format preference, supply chain availability, or specific procurement requirements.