TC-30.000MBE-T Equivalent & Substitute Parts

Part Overview

The TC-30.000MBE-T is a 30 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 functionally equivalent active alternatives for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Frequency	30 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
Physical Dimensions	3.20mm x 2.50mm
Moisture Sensitivity Level	MSL 1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the TC-30.000MBE-T is determined by the following mandatory parameters:

Core Electrical Parameters:

Frequency: 30 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 Parameters:

Package: 4-SMD, No Lead (exact match required)
Dimensions: 3.20mm x 2.50mm (exact match required)
Moisture Sensitivity: MSL 1 (exact match required)

All four substitute parts meet these mandatory criteria. Variations in current consumption, height, and base resonator type (MEMS vs. Crystal) do not preclude substitution when all electrical and mechanical parameters align.

Parameter Comparison

Parameter	TC-30.000MBE-T	7X-30.000MBE-T	AU-30.000MBE-T	ASE-30.000MHZ-L-C-T	LFSPXO025497
Manufacturer	TXC CORPORATION	TXC CORPORATION	TXC CORPORATION	Abracon LLC	IQD Frequency Products
Frequency	30 MHz	30 MHz	30 MHz	30 MHz	30 MHz
Output Type	CMOS	CMOS	CMOS	CMOS	CMOS
Supply Voltage	3.3V	3.3V	3.3V	3.3V	3.3V
Function	Enable/Disable	Enable/Disable	Enable/Disable	Enable/Disable	Enable/Disable
Frequency Stability	±50ppm	±50ppm	±50ppm	±50ppm	±50ppm
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	4-SMD, No Lead	4-SMD, No Lead	4-SMD, No Lead	4-SMD, No Lead	4-SMD, No Lead
Dimensions	3.20mm x 2.50mm	3.20mm x 2.50mm	3.20mm x 2.50mm	3.20mm x 2.50mm	3.20mm x 2.50mm
Height - Seated (Max)	0.80mm	1.10mm	1.10mm	1.20mm	1.20mm
Current - Supply (Max)	25mA	20mA	6mA	13mA	12mA
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	Not Applicable
Product Status	Obsolete	Active	Active	Active	Active
Base Resonator	MEMS	Crystal	Crystal	Crystal	Crystal

Engineering Selection Recommendations

Primary Recommendation: AU-30.000MBE-T

The AU-30.000MBE-T is the preferred substitute for the obsolete TC-30.000MBE-T. This part maintains TXC CORPORATION manufacturing continuity, carries Active product status, and includes AEC-Q100 automotive qualification. The AU series demonstrates the lowest current consumption at 6mA maximum, providing power efficiency advantages in battery-operated or power-constrained applications. RoHS Compliance and REACH Unaffected status satisfy modern regulatory requirements.

Secondary Recommendation: ASE-30.000MHZ-L-C-T

The ASE-30.000MHZ-L-C-T from Abracon LLC provides an alternative from an established oscillator manufacturer. This part is Active, ROHS3 Compliant, and REACH Unaffected. Current consumption is 13mA with specified disable current of 10µA, suitable for applications requiring low standby power. Abracon's ASE series offers broad market availability and established supply chain presence.

Tertiary Recommendation: LFSPXO025497

The LFSPXO025497 from IQD Frequency Products represents the CFPS-39 series alternative. This part is Active with ROHS3 Compliance and REACH Unaffected status. Current consumption is 12mA. IQD's CFPS-39 series provides geographic supply diversity and established distribution channels.

Alternative: 7X-30.000MBE-T

The 7X-30.000MBE-T remains available as a TXC CORPORATION alternative with Active status. Current consumption is 20mA. This part is suitable for applications where power consumption is not a primary constraint and TXC sourcing is preferred.

Frequently Asked Questions (FAQ)

Q: Can the TC-30.000MBE-T be directly replaced with any of these substitutes?

A: Yes. All four substitute parts meet the mandatory electrical and mechanical parameters: 30 MHz frequency, CMOS output, 3.3V supply, Enable/Disable function, ±50ppm stability, -40°C to 85°C operating range, 4-SMD No Lead package, and 3.20mm x 2.50mm dimensions. Direct PCB footprint compatibility is confirmed.

Q: What is the significance of the height difference between the main part (0.80mm) and substitutes (1.10mm to 1.20mm)?

A: The TC-30.000MBE-T has a lower seated height due to its MEMS-based resonator design. Substitute parts use crystal resonators, resulting in slightly increased height. This difference must be evaluated against PCB clearance requirements and component stacking constraints in the target application. In most standard PCB designs with adequate vertical clearance, this variation does not present compatibility issues.

Q: Why do current consumption values vary significantly among substitutes?

A: Current consumption differences reflect design variations in oscillator architecture and resonator technology. The AU-30.000MBE-T achieves 6mA through optimized crystal design, while the TC-30.000MBE-T requires 25mA. These variations do not affect functional compatibility but impact power budget calculations. Selection should consider application power requirements.

Q: What does "Product Status: Obsolete" mean for the TC-30.000MBE-T?

A: Obsolete status indicates that TXC CORPORATION has discontinued active production and support for this part. Existing inventory may be available through authorized distributors, but long-term supply cannot be guaranteed. Migration to an Active substitute part is recommended for new designs and sustained production.

Q: Are all substitutes RoHS compliant?

A: The AU-30.000MBE-T, ASE-30.000MHZ-L-C-T, and LFSPXO025497 are RoHS compliant (RoHS Compliant or ROHS3 Compliant). The 7X-30.000MBE-T RoHS status is not specified in the provided data. Compliance verification should be confirmed with the manufacturer or authorized distributor for the 7X series if RoHS certification is a design requirement.

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

A: The TC-30.000MBE-T uses a MEMS (Micro-Electro-Mechanical Systems) resonator, while all substitutes use crystal resonators. Both technologies deliver identical electrical performance at 30 MHz with ±50ppm stability. MEMS technology typically offers lower power consumption and smaller form factors, while crystal technology provides established reliability data and cost optimization at higher volumes. For this application, both technologies are functionally equivalent.

Q: Can the TC-30.000MBE-T be used interchangeably with substitutes in existing designs?

A: Yes, provided that PCB clearance accommodates the slightly increased height of substitute parts (1.10mm to 1.20mm versus 0.80mm). All electrical parameters, pinout configurations, and functional characteristics are identical. No circuit modifications are required. Physical layout verification is the only necessary design review step.

Q: Which substitute offers the best long-term supply availability?

A: ASE-30.000MHZ-L-C-T and LFSPXO025497 both show high inventory levels (9799 and 9226 units respectively) and Active product status from established manufacturers. Both parts represent stable, long-term supply options suitable for production commitments.

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