TXC CORPORATION 7M12070021 Equivalent & Substitute Parts

Part Overview

The TXC CORPORATION 7M12070021 is a 12 MHz crystal oscillator in 4-SMD, No Lead surface mount package with 10pF load capacitance. This component is classified as Active product status and is RoHS Compliant with MSL Level 1 (Unlimited moisture sensitivity). The part is suitable for applications requiring precise frequency reference in compact form factors. Substitute parts are identified based on matching electrical specifications and mechanical compatibility within the 4-SMD, No Lead package category.

Substiute Parts

7M12070021

TXC CORPORATIONIn Stock: 10257M12070021 Datasheet

Current PartRFQ

FA-238V 12.0000MB-K3

EPSONIn Stock: 10425FA-238V 12.0000MB-K3 Datasheet

SimilarRFQ

FA-238V 12.0000MB-W0

EPSONIn Stock: 1856FA-238V 12.0000MB-W0 Datasheet

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FA-238V 12.0000MB-W3

EPSONIn Stock: 73457FA-238V 12.0000MB-W3 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 7M12070021 are identified based on the following critical parameters that determine functional and mechanical compatibility:

Primary Matching Criteria:

• Frequency: 12 MHz (exact match required)
• Frequency Tolerance: ±50ppm (exact match required)
• Operating Temperature Range: -20°C ~ 70°C (exact match required)
• Mounting Type: Surface Mount (exact match required)
• 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)

Secondary Compatibility Factors:

• Load Capacitance: 10pF (primary specification); 12pF variants listed as substitutes with load capacitance variation
• RoHS Compliance: All substitutes maintain RoHS3 Compliant status
• MSL Rating: All substitutes maintain MSL Level 1 (Unlimited)

The substitute parts listed are manufactured by EPSON (FA-238V series) and maintain electrical and mechanical compatibility with the original TXC 7M12070021 within the specified parameter tolerances.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Matching Load Capacitance):

EPSON FA-238V 12.0000MB-K3 is the direct equivalent to TXC 7M12070021. This substitute maintains identical load capacitance (10pF), frequency (12 MHz), frequency tolerance (±50ppm), operating temperature range (-20°C ~ 70°C), and physical dimensions (0.126" L x 0.098" W). The part is ROHS3 Compliant with MSL Level 1 rating. Height is 0.028" (0.70mm), which is lower than the original 0.031" (0.80mm), providing additional clearance margin. This part is suitable for direct replacement in applications where the original TXC component is specified.

Alternative Substitutes (Load Capacitance Variation):

EPSON FA-238V 12.0000MB-W0 and FA-238V 12.0000MB-W3 are alternative substitutes with 12pF load capacitance instead of 10pF. These parts maintain all other critical parameters: frequency (12 MHz), frequency tolerance (±50ppm), operating temperature range (-20°C ~ 70°C), and physical dimensions (0.126" L x 0.098" W). Both are ROHS3 Compliant with MSL Level 1 rating. The load capacitance difference (12pF vs. 10pF) represents a 20% increase and may affect circuit oscillation characteristics. Selection of these alternatives requires circuit design verification to confirm compatibility with the load capacitance specification.

Compliance and Regulatory Status:

All substitute parts maintain RoHS compliance (ROHS3 status exceeds RoHS Compliant requirement). All parts are REACH Unaffected and classified as EAR99 for export control purposes. MSL Level 1 (Unlimited) rating on all parts ensures compatibility with standard moisture handling and storage procedures.

Frequently Asked Questions (FAQ)

Q: Can EPSON FA-238V 12.0000MB-K3 be used as a direct replacement for TXC 7M12070021?

A: Yes. The FA-238V 12.0000MB-K3 matches all critical parameters: 12 MHz frequency, ±50ppm tolerance, 10pF load capacitance, -20°C ~ 70°C operating temperature, 4-SMD No Lead package, and 0.126" L x 0.098" W dimensions. The lower seated height (0.028" vs. 0.031") provides additional clearance.

Q: What is the difference between FA-238V 12.0000MB-K3 and FA-238V 12.0000MB-W3?

A: The primary difference is load capacitance: FA-238V 12.0000MB-K3 has 10pF load capacitance (matching the original TXC part), while FA-238V 12.0000MB-W3 has 12pF load capacitance. All other parameters including frequency, tolerance, temperature range, and physical dimensions are identical. The 12pF variant may require circuit design verification.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts are ROHS3 Compliant, which exceeds the RoHS Compliant requirement of the original TXC 7M12070021. All parts are also REACH Unaffected.

Q: What is the significance of the height difference between the original and substitute parts?

A: The original TXC 7M12070021 has a maximum seated height of 0.031" (0.80mm), while all EPSON FA-238V substitutes have a maximum seated height of 0.028" (0.70mm). The lower height of substitute parts provides 0.003" (0.10mm) additional clearance, which is beneficial for applications with tight vertical space constraints.

Q: Can I use FA-238V 12.0000MB-W0 or FA-238V 12.0000MB-W3 if the circuit is designed for 10pF load capacitance?

A: The 12pF load capacitance variants differ from the original 10pF specification. Circuit design verification is required to confirm compatibility. The 20% increase in load capacitance may affect oscillation frequency, startup characteristics, or power consumption depending on the circuit design.

Q: What packaging format are the substitute parts available in?

A: All EPSON FA-238V substitute parts are supplied in Tape & Reel (TR) packaging format, suitable for automated assembly processes.

Q: Are the substitute parts available in sufficient quantity?

A: Yes. EPSON FA-238V 12.0000MB-K3 has 10406 pcs in stock, FA-238V 12.0000MB-W0 has 1838 pcs in stock, and FA-238V 12.0000MB-W3 has 73371 pcs in stock. All parts are classified as New Original In Stock.