TC-8.000MBE-T Equivalent & Substitute Parts

Part Overview

The TC-8.000MBE-T is an 8 MHz MEMS-based XO (Standard) CMOS oscillator manufactured by TXC CORPORATION. This component operates at 3.3V with Enable/Disable functionality in a 4-SMD, No Lead surface mount package. The part is classified as Obsolete, necessitating identification of equivalent substitute components that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Substiute Parts

TC-8.000MBE-T

TXC CORPORATIONIn Stock: 863TC-8.000MBE-T Datasheet

Current PartRFQ

7X-8.000MBE-T

TXC CORPORATIONIn Stock: 9067X-8.000MBE-T Datasheet

DirectRFQ

ASE-8.000MHZ-L-C-T

Abracon LLCIn Stock: 43708ASE-8.000MHZ-L-C-T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TC-8.000MBE-T are qualified based on the following critical parameters:

Electrical Compatibility:

• Frequency: 8 MHz (exact match required)
• Output: CMOS (exact match required)
• Supply Voltage: 3.3V (exact match required)
• Function: Enable/Disable (exact match required)
• Frequency Stability: ±50ppm (exact match required)
• Operating Temperature: -40°C ~ 85°C (exact match required)

Mechanical Compatibility:

• Package / Case: 4-SMD, No Lead (exact match required)
• Physical Dimensions: 0.126" L x 0.098" W (3.20mm x 2.50mm) (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

Both identified substitute parts meet these criteria. Variations in supply current, seated height, and base resonator technology (MEMS versus Crystal) do not affect functional substitution within the specified electrical and mechanical constraints.

Parameter Comparison

Engineering Selection Recommendations

7X-8.000MBE-T (TXC CORPORATION): This substitute maintains manufacturer continuity with TXC CORPORATION and is classified as Active product status. The 7X series employs a crystal-based resonator in place of the MEMS technology used in the TC series. All electrical parameters and mechanical dimensions are identical to the main part. The maximum supply current is reduced to 20mA compared to 25mA in the TC-8.000MBE-T. The seated height increases to 0.043" (1.10mm) from 0.031" (0.80mm). RoHS Compliance and REACH Unaffected status are confirmed. This part is suitable for direct substitution in applications where the increased height does not present mechanical constraints.

ASE-8.000MHZ-L-C-T (Abracon LLC): This substitute is manufactured by Abracon LLC and is classified as Active product status. The ASE series employs crystal-based resonator technology. All electrical parameters and mechanical dimensions match the main part specifications. The maximum supply current is significantly reduced to 7mA, with an additional disable current specification of 10µA. The seated height increases to 0.047" (1.20mm). ROHS3 Compliance and REACH Unaffected status are confirmed. This part offers superior power efficiency characteristics and is suitable for direct substitution where the increased height accommodates board layout requirements.

Both substitute parts satisfy the electrical and mechanical compatibility requirements for the TC-8.000MBE-T. Selection between substitutes depends on height clearance availability, power consumption requirements, and supply chain preferences.

Frequently Asked Questions (FAQ)

Q: Can the 7X-8.000MBE-T and ASE-8.000MHZ-L-C-T be used interchangeably with the TC-8.000MBE-T?

A: Both substitute parts meet all specified electrical and mechanical parameters. Interchangeability is confirmed for frequency, output type, supply voltage, function, frequency stability, operating temperature range, package type, and physical footprint dimensions. The primary design consideration is the increase in seated height for both substitutes, which must be evaluated against available board clearance.

Q: What is the difference between MEMS and crystal-based resonators in these oscillators?

A: The TC-8.000MBE-T uses MEMS (Micro-Electro-Mechanical Systems) technology, while the 7X-8.000MBE-T and ASE-8.000MHZ-L-C-T use crystal-based resonators. Both technologies deliver identical electrical performance within the specified ±50ppm frequency stability. The substitutes are functionally equivalent for this application.

Q: Are there height restrictions when substituting the TC-8.000MBE-T?

A: The TC-8.000MBE-T has a maximum seated height of 0.031" (0.80mm). The 7X-8.000MBE-T increases to 0.043" (1.10mm), and the ASE-8.000MHZ-L-C-T increases to 0.047" (1.20mm). Board layout and component clearance must accommodate these height differences. If height is constrained, alternative parts with lower profile specifications must be evaluated.

Q: What are the power consumption differences between these parts?

A: The TC-8.000MBE-T specifies a maximum supply current of 25mA. The 7X-8.000MBE-T reduces this to 20mA. The ASE-8.000MHZ-L-C-T provides the lowest consumption at 7mA maximum, with an additional disable current specification of 10µA. For power-sensitive applications, the ASE-8.000MHZ-L-C-T offers superior efficiency.

Q: Are the substitute parts RoHS and REACH compliant?

A: The 7X-8.000MBE-T is RoHS Compliant and REACH Unaffected. The ASE-8.000MHZ-L-C-T is ROHS3 Compliant and REACH Unaffected. Both substitutes meet current environmental compliance requirements. The TC-8.000MBE-T compliance status is not specified in available documentation.

Q: What packaging options are available for the substitute parts?

A: The 7X-8.000MBE-T is supplied in Tape & Reel (TR) packaging. The ASE-8.000MHZ-L-C-T is supplied in Cut Tape (CT) and Digi-Reel® packaging. Packaging selection depends on production volume and assembly equipment compatibility.

Q: Can the TC-8.000MBE-T be used if the substitutes are unavailable?

A: The TC-8.000MBE-T is classified as Obsolete. While 803 pieces are currently in stock, long-term availability is not assured. Substitution to Active product status parts (7X-8.000MBE-T or ASE-8.000MHZ-L-C-T) is recommended for new designs and ongoing production to ensure supply continuity.