CMX309FLC6.000M-UT Equivalent & Substitute Parts

Part Overview

The CMX309FLC6.000M-UT is a 6 MHz crystal oscillator manufactured by Citizen Finedevice Co Ltd, designed for applications requiring CMOS and TTL output compatibility with 5V supply operation. This component features enable/disable functionality and is housed in a 4-SOJ package with 5.08mm pitch. The product is currently obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

CMX309FLC6.000M-UT

Citizen Finedevice Co LtdIn Stock: 957CMX309FLC6.000M-UT Datasheet

Current PartRFQ

ECS-8FMX-060-TR

ECS Inc.In Stock: 1026ECS-8FMX-060-TR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CMX309FLC6.000M-UT is determined by strict alignment of the following critical parameters:

• Frequency: 6 MHz (exact match required)
• Output Compatibility: CMOS and TTL output support
• Supply Voltage: 5V operation
• Enable/Disable Function: Required for system control
• Package Configuration: 4-SOJ with 5.08mm pitch (mechanical and electrical interface requirement)
• Mounting Type: Surface mount compatibility
• Current Specifications: Maximum supply current of 23mA and disable current of 12mA

The ECS-8FMX-060-TR meets all substitution criteria within the allowed parameter tolerances for this product category.

Parameter Comparison

Engineering Selection Recommendations

The ECS-8FMX-060-TR is a direct functional substitute for the obsolete CMX309FLC6.000M-UT. Both components share identical frequency, output type, supply voltage, enable/disable functionality, and package configuration. The ECS component is currently in active production status, ensuring long-term availability and supply chain continuity.

The ECS-8FMX-060-TR provides an extended operating temperature range (-40°C ~ 85°C versus -10°C ~ 70°C), which offers broader environmental compatibility. The frequency stability specification of ±200ppm for the ECS part is wider than the ±100ppm of the original component; applications requiring tighter frequency tolerance must evaluate this parameter against system requirements.

Both components carry identical moisture sensitivity level (MSL 1) and REACH compliance status, supporting equivalent handling and environmental compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can the ECS-8FMX-060-TR be used as a direct replacement for the CMX309FLC6.000M-UT?

A: Yes. Both components operate at 6 MHz with CMOS and TTL output, 5V supply, enable/disable control, and identical 4-SOJ 5.08mm pitch packaging. Mechanical and electrical interfaces are compatible.

Q: What is the difference in frequency stability between these parts?

A: The CMX309FLC6.000M-UT specifies ±100ppm stability, while the ECS-8FMX-060-TR specifies ±200ppm. Applications with strict frequency tolerance requirements must confirm the ECS part meets system specifications.

Q: Does the extended temperature range of the ECS part affect compatibility?

A: No. The ECS-8FMX-060-TR operating range of -40°C ~ 85°C encompasses the original part's -10°C ~ 70°C range. Extended temperature capability does not create incompatibility; it provides additional environmental flexibility.

Q: Are there packaging format differences?

A: The ECS-8FMX-060-TR is supplied in Tape & Reel (TR) format. Verify that your assembly process accommodates this standard packaging format.

Q: What is the current consumption difference?

A: Both parts specify 23mA maximum supply current. The ECS part does not provide a disable current specification; the original part specifies 12mA in disable mode.

Q: Are compliance certifications equivalent?

A: Both components carry REACH Unaffected status, EAR99 ECCN classification, and identical HTSUS codes. Moisture sensitivity level is MSL 1 for both parts.