TXC CORPORATION 7S12010002 Crystal 12.0000MHz Equivalent & Substitute Parts

Part Overview

The TXC CORPORATION 7S12010002 is a 12 MHz fundamental mode crystal oscillator in 4-SMD, No Lead surface mount package. This component is classified as obsolete product status. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for production and repair applications where the original part is no longer readily available from the manufacturer.

Key Parameters

Parameter	Value
Frequency	12 MHz
Frequency Stability	±20ppm
Frequency Tolerance	±30ppm
Load Capacitance	12pF
ESR (Equivalent Series Resistance)	200 Ohms
Operating Mode	Fundamental
Operating Temperature Range	-20°C ~ 70°C
Mounting Type	Surface Mount
Package / Case	4-SMD, No Lead
RoHS Status	RoHS Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the TXC CORPORATION 7S12010002 is determined by the following critical parameters:

Mandatory Matching Parameters:

Frequency: 12 MHz
Load Capacitance: 12pF
Operating Mode: Fundamental
Package / Case: 4-SMD, No Lead
Operating Temperature Range: -20°C ~ 70°C
Mounting Type: Surface Mount

Allowable Variation Parameters:

ESR (Equivalent Series Resistance): The substitute part may have lower ESR values while maintaining circuit compatibility
Physical dimensions: Minor variations in length, width, and height are acceptable provided the package classification remains 4-SMD, No Lead
Product status: Active status substitutes are preferred for long-term availability

The EPSON FA-238V 12.0000MD20V-W5 meets all mandatory matching parameters and qualifies as a direct substitute for the obsolete TXC part.

Parameter Comparison

Parameter	TXC 7S12010002	EPSON FA-238V 12.0000MD20V-W5	Compatibility
Manufacturer	TXC CORPORATION	EPSON	Different manufacturer
Frequency	12 MHz	12 MHz	Match
Frequency Stability	±20ppm	±20ppm	Match
Frequency Tolerance	±30ppm	±30ppm	Match
Load Capacitance	12pF	12pF	Match
ESR (Equivalent Series Resistance)	200 Ohms	100 Ohms	Substitute has lower ESR
Operating Mode	Fundamental	Fundamental	Match
Operating Temperature Range	-20°C ~ 70°C	-20°C ~ 70°C	Match
Mounting Type	Surface Mount	Surface Mount	Match
Package / Case	4-SMD, No Lead	4-SMD, No Lead	Match
Size / Dimension	0.098" L x 0.079" W (2.50mm x 2.00mm)	0.126" L x 0.098" W (3.20mm x 2.50mm)	Substitute is larger
Height - Seated (Max)	0.033" (0.85mm)	0.028" (0.70mm)	Substitute is lower profile
Product Status	Obsolete	Active	Substitute is active
RoHS Status	RoHS Compliant	ROHS3 Compliant	Both compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Match

Engineering Selection Recommendations

The EPSON FA-238V 12.0000MD20V-W5 is a qualified substitute for the obsolete TXC CORPORATION 7S12010002 based on the following engineering criteria:

Electrical Compatibility: All critical electrical parameters match exactly: 12 MHz frequency, ±20ppm stability, ±30ppm tolerance, 12pF load capacitance, and fundamental operating mode. The lower ESR value (100 Ohms versus 200 Ohms) in the substitute part is electrically favorable and does not compromise circuit operation.

Package and Mounting: Both parts use identical 4-SMD, No Lead surface mount package classification. The EPSON part has slightly larger footprint dimensions (3.20mm x 2.50mm versus 2.50mm x 2.00mm) and lower profile height (0.70mm versus 0.85mm). PCB layout verification is required to confirm the larger footprint accommodates existing pad patterns.

Compliance and Availability: The EPSON part holds Active product status with ROHS3 compliance and REACH Unaffected designation, ensuring long-term supply chain availability. Both parts maintain MSL 1 (Unlimited) moisture sensitivity rating.

Inventory Consideration: The substitute part has 825 units in stock compared to 3020 units of the original part, providing adequate supply for production requirements.

Frequently Asked Questions (FAQ)

Q: Can the EPSON FA-238V 12.0000MD20V-W5 be used as a direct replacement for the TXC 7S12010002 in existing designs?

A: Yes, the EPSON part qualifies as a direct electrical substitute. All critical parameters including frequency, stability, tolerance, load capacitance, and operating temperature range are identical. PCB layout verification is required due to the larger footprint dimensions of the EPSON part.

Q: What is the significance of the lower ESR value in the EPSON substitute part?

A: The EPSON part has 100 Ohms ESR compared to 200 Ohms in the TXC part. Lower ESR is electrically favorable and does not create compatibility issues. The substitute part will perform equivalently or better in the circuit.

Q: Are there any compliance or regulatory differences between the two parts?

A: Both parts are RoHS compliant. The EPSON part carries ROHS3 compliance and REACH Unaffected status, providing enhanced regulatory documentation. Both maintain MSL 1 (Unlimited) moisture sensitivity rating.

Q: What are the physical dimension differences, and do they affect PCB design?

A: The EPSON part is larger (3.20mm x 2.50mm versus 2.50mm x 2.00mm) but has a lower profile (0.70mm versus 0.85mm). Existing PCB pad patterns must be verified for compatibility with the larger footprint. The lower height may provide clearance advantages in space-constrained applications.

Q: Why is the TXC part classified as obsolete?

A: The TXC CORPORATION 7S12010002 is listed as obsolete product status, indicating the manufacturer has discontinued production. The EPSON FA-238V 12.0000MD20V-W5 maintains Active status, ensuring continued availability for future production and repair applications.

Q: What packaging format is available for the substitute part?

A: The EPSON FA-238V 12.0000MD20V-W5 is supplied in Tape & Reel (TR) packaging format, standard for high-volume surface mount production environments.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message