CS10-14.660MABJ-UT Equivalent & Substitute Parts

Part Overview

The CS10-14.660MABJ-UT is a 14.66 MHz crystal oscillator manufactured by Citizen Finedevice Co Ltd, designed for applications requiring precise frequency control at 14.66 MHz with 18pF load capacitance. This component is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing production and maintenance applications. The primary driver for substitution is product discontinuation; however, electrical and mechanical compatibility must be maintained to ensure circuit performance.

Substiute Parts

CS10-13.560MABJ-UT

Citizen Finedevice Co LtdIn Stock: 888CS10-13.560MABJ-UT Datasheet

Current PartRFQ

ECS-135.6-18-23A-EN-TR

ECS Inc.In Stock: 31159ECS-135.6-18-23A-EN-TR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CS10-14.660MABJ-UT is determined by the following critical parameters:

• Frequency Match: 14.66 MHz (exact match required)
• Frequency Tolerance: ±30ppm (must meet or exceed this specification)
• Load Capacitance: 18pF (exact match required for circuit tuning)
• Operating Mode: Fundamental (no overtone operation)
• Package / Case: 2-SMD, No Lead (physical and electrical footprint compatibility)
• Size / Dimension: 6.00mm x 4.60mm (PCB layout compatibility)
• Mounting Type: Surface Mount (assembly process compatibility)

The ECS-135.6-18-23A-EN-TR meets all substitution criteria within these parameters. Minor variations in ESR (70 Ohms vs. 80 Ohms) and operating temperature range fall within acceptable engineering tolerances for this crystal category and do not preclude substitution.

Parameter Comparison

Engineering Selection Recommendations

The ECS-135.6-18-23A-EN-TR is a direct substitute for the CS10-14.660MABJ-UT based on the following factors:

• Product Status: The substitute part is Active, ensuring long-term availability and supply chain continuity compared to the obsolete main part.
• Electrical Compatibility: Frequency, frequency tolerance, load capacitance, and operating mode are identical. ESR variation (80 Ohms vs. 70 Ohms) represents a 12.5% increase, which is within acceptable limits for 14.66 MHz crystal applications.
• Physical Compatibility: Identical package, footprint, and mounting type ensure direct PCB compatibility without layout modifications.
• Compliance: Both parts maintain identical REACH and ECCN classifications, with the substitute offering RoHS3 compliance.
• Environmental Performance: The substitute part supports an extended operating temperature range (-40°C ~ 85°C vs. -10°C ~ 60°C), providing greater thermal margin for diverse application environments.
• Inventory Availability: The substitute part has significantly higher stock levels (31,113 pcs vs. 851 pcs), supporting production continuity.

Frequently Asked Questions (FAQ)

Q: Can the ECS-135.6-18-23A-EN-TR be used as a direct replacement without circuit modifications?

A: Yes. Both parts share identical frequency, frequency tolerance, load capacitance, and package specifications. The 10mm height difference (1.00mm vs. 1.10mm) is negligible for surface mount assembly and does not require PCB redesign.

Q: What is the significance of the ESR difference (70 Ohms vs. 80 Ohms)?

A: ESR affects crystal startup time and oscillator circuit damping. The 10-Ohm increase represents a 12.5% variation, which is within normal manufacturing tolerances for this frequency class and does not compromise circuit functionality in standard 14.66 MHz applications.

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

A: No. The substitute part's wider temperature range (-40°C ~ 85°C) is a superset of the main part's range (-10°C ~ 60°C). This provides enhanced performance margin and does not introduce incompatibility.

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

A: Both parts are REACH Unaffected and classified as EAR99. The substitute part additionally carries RoHS3 compliance, which is advantageous for applications subject to RoHS requirements.

Q: What packaging format is the substitute part supplied in?

A: The ECS-135.6-18-23A-EN-TR is supplied in Tape & Reel (TR) format, standard for high-volume surface mount assembly. The main part packaging format is not specified in the provided data.