TC-50.000MBE-T Equivalent & Substitute Parts Reference

Part Overview

The TC-50.000MBE-T is a 50 MHz MEMS-based XO (Standard) CMOS oscillator manufactured by TXC CORPORATION. This component operates at 3.3V with Enable/Disable functionality in a compact 4-SMD, No Lead surface mount package (3.20mm x 2.50mm x 0.80mm). The part is classified as Obsolete, necessitating identification of active equivalent and substitute components that maintain electrical and mechanical compatibility for ongoing production and field replacement applications.

Key Parameters

Parameter	Value
Frequency	50 MHz
Output Type	CMOS
Supply Voltage	3.3V
Function	Enable/Disable
Frequency Stability	±50ppm
Operating Temperature Range	-40°C ~ 85°C
Package Type	4-SMD, No Lead
Package Dimensions	3.20mm L x 2.50mm W
Maximum Height	0.80mm (seated)
Mounting Type	Surface Mount
Moisture Sensitivity Level	MSL 1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the TC-50.000MBE-T is determined by strict compliance with the following parameters:

Critical Matching Parameters:

Frequency: 50.000 MHz (exact match required)
Output: CMOS (no alternatives)
Supply Voltage: 3.3V (no alternatives)
Function: Enable/Disable (no alternatives)
Frequency Stability: ±50ppm (no alternatives)
Operating Temperature: -40°C ~ 85°C (no alternatives)
Package: 4-SMD, No Lead (no alternatives)
Footprint Dimensions: 3.20mm x 2.50mm (no alternatives)

Allowable Variations:

Base Resonator: MEMS or Crystal (both acceptable)
Maximum Height: Up to 0.047" (1.20mm) acceptable (original: 0.031"/0.80mm)
Current Supply (Max): Variations permitted if within device specification limits
Packaging Format: Tape & Reel, Cut Tape, or Bulk acceptable
Product Status: Active preferred over Obsolete
Compliance Certifications: RoHS3, AEC-Q100, REACH status variations acceptable

All substitute parts listed maintain identical electrical performance and mechanical compatibility within PCB assembly constraints.

Parameter Comparison

Part Number	Manufacturer	Series	Status	Resonator	Frequency (MHz)	Output	Voltage (V)	Stability (ppm)	Temp Range (°C)	Current Max (mA)	Height (mm)	RoHS
TC-50.000MBE-T	TXC CORPORATION	TC	Obsolete	MEMS	50.0000	CMOS	3.3	±50	-40 ~ 85	25	0.80	—
7X-50.000MBE-T	TXC CORPORATION	7X	Active	Crystal	50.0000	CMOS	3.3	±50	-40 ~ 85	20	1.10	RoHS3
7X50000008	TXC CORPORATION	7X	Active	Crystal	50.0000	CMOS	3.3	±50	-40 ~ 85	—	1.10	RoHS3
7X50072003	TXC CORPORATION	7X	Active	Crystal	50.0000	CMOS	3.3	±50	-40 ~ 85	—	1.10	RoHS3
AU-50.000MBE-T	TXC CORPORATION	AU	Active	Crystal	50.0000	CMOS	3.3	±50	-40 ~ 85	6	1.10	RoHS3
ASE-50.000MHZ-L-C-T	Abracon LLC	ASE	Active	Crystal	50.0000	CMOS	3.3	±50	-40 ~ 85	19	1.20	RoHS3
LFSPXO025560	IQD Frequency Products	CFPS-39	Active	Crystal	50.0000	CMOS	3.3	±50	-40 ~ 85	20	1.20	RoHS3
OXETGLJANF-50.000000	Taitien	OX	Active	Crystal	50.0000	CMOS	3.3	±50	-40 ~ 85	10	1.10	RoHS3
SXO32C3A481-50.000M	Suntsu Electronics, Inc.	SXO32C	Active	Crystal	50.0000	CMOS	3.3	±50	-40 ~ 85	17	1.20	RoHS3

Engineering Selection Recommendations

Primary Recommendation: TXC CORPORATION 7X-50.000MBE-T

The 7X-50.000MBE-T is the preferred substitute. Manufactured by the same supplier as the original TC-50.000MBE-T, this part maintains identical electrical specifications and package footprint. Product status is Active with RoHS3 compliance. Current consumption is reduced to 20mA (versus 25mA original), providing improved power efficiency. Tape & Reel packaging supports high-volume production requirements.

Secondary Recommendation: TXC CORPORATION AU-50.000MBE-T

The AU-50.000MBE-T offers the lowest current consumption at 6mA maximum supply current, beneficial for power-constrained applications. This part carries AEC-Q100 automotive qualification and RoHS3 compliance. Identical footprint and electrical performance ensure direct substitution. Tape & Reel packaging available.

Alternative Suppliers:

Abracon LLC ASE-50.000MHZ-L-C-T: Active status, RoHS3 compliant, 19mA current consumption. Available in Cut Tape & Digi-Reel packaging.
IQD Frequency Products LFSPXO025560: Active status, RoHS3 compliant, 20mA current consumption. Tape & Reel packaging.
Taitien OXETGLJANF-50.000000: Active status, RoHS3 compliant, 10mA current consumption. Tape & Reel packaging.
Suntsu Electronics SXO32C3A481-50.000M: Active status, RoHS3 compliant, 17mA current consumption. Bulk packaging.

All substitute parts maintain the critical electrical and mechanical parameters required for direct PCB replacement without design modification.

Frequently Asked Questions (FAQ)

Q: Can the TC-50.000MBE-T be directly replaced with any of the listed substitutes?

A: Yes. All listed substitute parts maintain identical frequency (50 MHz), output type (CMOS), supply voltage (3.3V), Enable/Disable function, frequency stability (±50ppm), operating temperature range (-40°C ~ 85°C), and 4-SMD No Lead package footprint (3.20mm x 2.50mm). Direct PCB replacement is supported without design changes.

Q: What is the difference between MEMS and Crystal resonator types in these oscillators?

A: The original TC-50.000MBE-T uses MEMS (Micro-Electro-Mechanical Systems) resonator technology. All substitute parts use Crystal resonators. Both technologies deliver identical electrical performance at the specified 50 MHz frequency and ±50ppm stability. Crystal-based oscillators are widely available from multiple manufacturers, supporting supply chain continuity.

Q: Are there height differences between the original and substitute parts?

A: Yes. The original TC-50.000MBE-T has a maximum seated height of 0.80mm. Substitute parts range from 1.10mm to 1.20mm maximum height. These variations remain within typical PCB assembly clearance specifications. Verify clearance in your specific PCB layout if height-constrained applications exist.

Q: Which substitute offers the lowest power consumption?

A: The TXC CORPORATION AU-50.000MBE-T provides the lowest maximum supply current at 6mA, compared to 25mA for the original TC-50.000MBE-T. This represents a 76% reduction in current consumption, beneficial for battery-powered or power-limited applications.

Q: What packaging formats are available for production?

A: Substitute parts are available in multiple packaging formats: Tape & Reel (TR) for automated assembly, Cut Tape (CT) for smaller quantities, and Bulk for specific applications. Select packaging based on production volume and assembly equipment requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry RoHS3 compliance certification. The original TC-50.000MBE-T does not specify RoHS status. RoHS3 compliance ensures compliance with current environmental regulations for electronic component manufacturing and use.

Q: Can I use these substitutes in automotive applications?

A: The TXC CORPORATION AU-50.000MBE-T carries AEC-Q100 automotive qualification. Other substitutes do not specify automotive ratings. Verify AEC-Q100 or equivalent automotive qualification requirements for your specific application before selection.

Q: What is the Moisture Sensitivity Level (MSL) for these parts?

A: The original TC-50.000MBE-T and most substitutes are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. The IQD Frequency Products LFSPXO025560 is rated MSL Not Applicable. MSL 1 parts require no special moisture control during storage or handling.

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