7X-12.000MBA-T Crystal Oscillator Equivalent & Substitute Parts

Part Overview

The 7X-12.000MBA-T is a 12 MHz crystal oscillator manufactured by TXC CORPORATION, designed for applications requiring a standard XO (Standard) CMOS output with Enable/Disable functionality. This surface mount device operates at 3.3V supply voltage and is housed in a compact 4-SMD, No Lead package measuring 3.20mm x 2.50mm.

The part is currently in Active product status with 1,402 units in stock. Substitute parts are identified to provide alternative sourcing options when the primary part becomes unavailable, when bulk packaging requirements differ, or when supply chain optimization is necessary.

Key Parameters

Parameter	Value
Frequency	12 MHz
Output Type	CMOS
Supply Voltage	3.3V
Function	Enable/Disable
Frequency Stability	±25ppm
Operating Temperature Range	-10°C ~ 70°C
Package Type	4-SMD, No Lead
Package Dimensions	3.20mm x 2.50mm
Mounting Type	Surface Mount
RoHS Compliance	RoHS Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 7X-12.000MBA-T is determined by the following critical parameters:

Mandatory Matching Parameters:

Frequency: 12 MHz (exact match required)
Output Type: CMOS (electrical compatibility)
Supply Voltage: 3.3V (circuit compatibility)
Function: Enable/Disable (functional requirement)
Package Type: 4-SMD, No Lead (mechanical compatibility)
Package Dimensions: 3.20mm x 2.50mm (PCB layout compatibility)
Mounting Type: Surface Mount (assembly process compatibility)

Allowable Variation Parameters:

Frequency Stability: ±25ppm (specification tolerance)
Operating Temperature Range: -10°C ~ 70°C (application environment)
Current Supply (Max): Variation acceptable if within circuit design limits
Height - Seated (Max): Minor variation acceptable within assembly clearance
Packaging Format: Cut Tape (CT) vs. Bulk (different supply chain formats)
RoHS Status: Both RoHS Compliant and ROHS3 Compliant are acceptable

The substitute part SXO32C3C171-12.000M meets all mandatory matching parameters and is therefore electrically and mechanically interchangeable with the 7X-12.000MBA-T.

Parameter Comparison

Parameter	7X-12.000MBA-T (TXC)	SXO32C3C171-12.000M (Suntsu)	Compatibility
Frequency	12 MHz	12 MHz	Match
Output Type	CMOS	CMOS	Match
Supply Voltage	3.3V	3.3V	Match
Function	Enable/Disable	Enable/Disable	Match
Frequency Stability	±25ppm	±25ppm	Match
Operating Temperature	-10°C ~ 70°C	-10°C ~ 70°C	Match
Package Type	4-SMD, No Lead	4-SMD, No Lead	Match
Package Dimensions	3.20mm x 2.50mm	3.20mm x 2.50mm	Match
Mounting Type	Surface Mount	Surface Mount	Match
Current - Supply (Max)	20mA	10mA	Suntsu lower; acceptable
Height - Seated (Max)	1.10mm	1.20mm	Variation within tolerance
Packaging Format	Cut Tape (CT)	Bulk	Different supply format
RoHS Status	RoHS Compliant	ROHS3 Compliant	Both compliant

Engineering Selection Recommendations

Primary Part Selection (7X-12.000MBA-T): Select the TXC 7X-12.000MBA-T when Cut Tape (CT) packaging is required for automated pick-and-place assembly operations. This part is Active status with 1,402 units in stock and carries RoHS Compliant certification.

Substitute Part Selection (SXO32C3C171-12.000M): Select the Suntsu SXO32C3C171-12.000M when bulk packaging is preferred for inventory management or when TXC supply is constrained. This part is Active status with 2,815 units in stock and carries ROHS3 Compliant certification, which represents an updated RoHS standard. The lower maximum supply current (10mA vs. 20mA) is advantageous for power-sensitive applications and does not restrict compatibility with circuits designed for the TXC part.

Interchangeability Confirmation: Both parts are electrically and mechanically interchangeable. No circuit redesign or PCB layout modification is required when substituting between these parts. Both parts carry appropriate environmental compliance certifications (RoHS and REACH).

Frequently Asked Questions (FAQ)

Q: Can the SXO32C3C171-12.000M directly replace the 7X-12.000MBA-T on an existing PCB?

A: Yes. Both parts share identical package dimensions (3.20mm x 2.50mm), identical 4-SMD No Lead package type, and identical surface mount mounting requirements. No PCB layout changes are necessary.

Q: What is the significance of the different maximum supply currents (20mA vs. 10mA)?

A: The Suntsu part has a lower maximum supply current specification. This indicates more efficient operation and is not a limitation. Circuits designed for the TXC part (20mA max) will operate correctly with the Suntsu part (10mA max). The actual current draw depends on circuit design and operating conditions.

Q: Are there any compliance or certification differences between these parts?

A: Both parts are RoHS compliant. The TXC part carries RoHS Compliant certification, while the Suntsu part carries ROHS3 Compliant certification. ROHS3 represents an updated RoHS standard. Both certifications are acceptable for equivalent substitution. Both parts are REACH Unaffected and carry EAR99 ECCN classification.

Q: What is the difference between Cut Tape (CT) and Bulk packaging?

A: Cut Tape packaging is pre-cut and formatted for automated pick-and-place assembly equipment. Bulk packaging is supplied in larger quantities without pre-cutting. Selection depends on assembly process requirements and inventory management strategy.

Q: Are the frequency stability specifications identical?

A: Yes. Both parts specify ±25ppm frequency stability, ensuring equivalent timing accuracy for applications requiring this oscillator frequency.

Q: What is the operating temperature range for both parts?

A: Both parts operate across the identical temperature range of -10°C to 70°C, ensuring equivalent thermal performance in specified application environments.

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