TC-50.000MDD-T Equivalent & Substitute Parts

Part Overview

The TC-50.000MDD-T is a 50 MHz MEMS-based XO (Standard) CMOS oscillator manufactured by TXC CORPORATION. This component operates at 1.8V supply voltage with Enable/Disable functionality, housed in a 4-SMD, No Lead package measuring 3.20mm x 2.50mm. The product is currently classified as Obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure long-term component availability for production and field replacement applications.

Substiute Parts

TC-50.000MDD-T

TXC CORPORATIONIn Stock: 1036TC-50.000MDD-T Datasheet

Current PartRFQ

7X-50.000MDD-T

TXC CORPORATIONIn Stock: 7937X-50.000MDD-T Datasheet

DirectRFQ

FK5000056Q

Diodes IncorporatedIn Stock: 3644FK5000056Q Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TC-50.000MDD-T is determined by strict alignment with the following critical parameters:

Mandatory Matching Parameters:

• Frequency: 50 MHz
• Output Configuration: CMOS
• Supply Voltage: 1.8V
• Function: Enable/Disable capability
• Frequency Stability: ±25ppm
• Operating Temperature Range: -40°C ~ 85°C
• Package Type: 4-SMD, No Lead
• Physical Dimensions: 3.20mm x 2.50mm
• Moisture Sensitivity Level: 1 (Unlimited)

The identified substitute parts meet all mandatory parameters. The primary distinction between the main part and substitutes lies in the base resonator technology (MEMS versus Crystal) and product status (Obsolete versus Active). Both resonator types deliver equivalent electrical performance within the specified parameters, making them functionally interchangeable at the circuit level.

Parameter Comparison

Engineering Selection Recommendations

7X-50.000MDD-T (TXC CORPORATION): This substitute maintains manufacturer continuity with the original TC-50.000MDD-T, both sourced from TXC CORPORATION. The 7X-50.000MDD-T is classified as Active product status, ensuring ongoing availability and manufacturing support. It is RoHS Compliant and carries identical electrical specifications. The seated height increases from 0.80mm to 1.10mm; verify PCB layout clearance before implementation. Supply current is specified at 20mA maximum. This option provides the most direct transition path for existing designs.

FK5000056Q (Diodes Incorporated): This substitute is sourced from an alternative manufacturer (Diodes Incorporated) and carries Active product status with AEC-Q200 automotive qualification rating. It is ROHS3 Compliant and REACH Unaffected. The FK5000056Q demonstrates superior power efficiency with maximum supply current of 6mA and specified disable current of 10µA, compared to the 7X-50.000MDD-T. The seated height is 1.15mm. This option is suitable for applications requiring automotive-grade reliability or enhanced power management characteristics.

Both substitutes are electrically and mechanically compatible with the TC-50.000MDD-T within the specified parameters. Selection between them depends on manufacturer preference, supply chain strategy, and application-specific requirements regarding power consumption and qualification standards.

Frequently Asked Questions (FAQ)

Q: Can the TC-50.000MDD-T be directly replaced with 7X-50.000MDD-T or FK5000056Q without circuit modifications?

A: Yes. Both substitutes match all mandatory electrical parameters: 50 MHz frequency, CMOS output, 1.8V supply, Enable/Disable function, ±25ppm stability, and -40°C to 85°C operating range. Physical package dimensions (3.20mm x 2.50mm) and pinout are identical. Verify PCB clearance for the increased seated height (1.10mm for 7X-50.000MDD-T; 1.15mm for FK5000056Q versus 0.80mm for TC-50.000MDD-T).

Q: What is the primary difference between the TC-50.000MDD-T and its substitutes?

A: The TC-50.000MDD-T uses MEMS resonator technology and is Obsolete. Both substitutes use Crystal resonator technology and are Active products. Both resonator types deliver equivalent performance within the specified electrical parameters. The TC-50.000MDD-T has an unspecified maximum supply current, while 7X-50.000MDD-T specifies 20mA and FK5000056Q specifies 6mA.

Q: Why is the TC-50.000MDD-T classified as Obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The identified substitutes (7X-50.000MDD-T and FK5000056Q) are Active products with confirmed ongoing manufacturing and availability.

Q: Are there compliance or certification differences between the substitutes?

A: Yes. The 7X-50.000MDD-T is RoHS Compliant. The FK5000056Q is ROHS3 Compliant and carries AEC-Q200 automotive qualification. Select based on your application's compliance requirements.

Q: How do power consumption characteristics compare?

A: The FK5000056Q offers lower active supply current (6mA maximum) and specified disable current (10µA) compared to the 7X-50.000MDD-T (20mA maximum, disable current not specified). For power-sensitive applications, FK5000056Q is the preferred choice.

Q: Are there inventory considerations?

A: TC-50.000MDD-T has 933 pieces in stock (Obsolete status). 7X-50.000MDD-T has 761 pieces available. FK5000056Q has 3605 pieces in stock. FK5000056Q offers the highest inventory availability.