CS20-6.000MABJ-UT Equivalent & Substitute Parts

Part Overview

The CS20-6.000MABJ-UT is a 6 MHz crystal oscillator manufactured by Citizen Finedevice Co Ltd, designed for fundamental mode operation in 4-SMD surface mount packages. This part is classified as obsolete, making identification of suitable substitute components essential for ongoing production and maintenance applications. The crystal operates across a temperature range of -10°C to 60°C with a load capacitance of 18pF and an equivalent series resistance (ESR) of 100 Ohms.

Substiute Parts

CS20-6.000MABJ-UT

Citizen Finedevice Co LtdIn Stock: 749CS20-6.000MABJ-UT Datasheet

Current PartRFQ

ABC2-6.000MHZ-4-T

Abracon LLCIn Stock: 3919ABC2-6.000MHZ-4-T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CS20-6.000MABJ-UT is determined by the following critical parameters:

• Frequency: 6 MHz (exact match required)
• Frequency Tolerance: ±30ppm (maximum allowable deviation)
• Load Capacitance: 18pF (circuit design requirement)
• Operating Mode: Fundamental (oscillation characteristic)
• Package / Case: 4-SMD, No Lead (PCB footprint compatibility)
• Operating Temperature Range: -10°C to 60°C (minimum operational envelope)

The ABC2-6.000MHZ-4-T meets all substitution criteria within these parameters. Variations in ESR (100 Ohms vs. 60 Ohms) and physical dimensions (height and length tolerances) remain within acceptable engineering margins for this crystal category.

Parameter Comparison

Engineering Selection Recommendations

The ABC2-6.000MHZ-4-T is a direct functional substitute for the CS20-6.000MABJ-UT. The substitute part is currently in active production status, ensuring long-term availability and supply chain continuity. The ABC2-6.000MHZ-4-T demonstrates improved frequency stability (±30ppm vs. ±50ppm) and lower ESR (60 Ohms vs. 100 Ohms), both favorable characteristics for oscillator circuit performance.

The substitute part is ROHS3 compliant and REACH affected, indicating compliance with current environmental and regulatory standards. Physical dimensions are compatible within standard PCB assembly tolerances, with the substitute part featuring a lower seated height (2.00mm vs. 2.20mm), which may provide additional clearance in space-constrained applications.

Frequently Asked Questions (FAQ)

Q: Can the ABC2-6.000MHZ-4-T replace the CS20-6.000MABJ-UT in existing designs?

A: Yes. Both parts share identical frequency (6 MHz), frequency tolerance (±30ppm), load capacitance (18pF), operating mode (fundamental), package type (4-SMD, No Lead), and operating temperature range (-10°C to 60°C). These parameters define functional compatibility for crystal oscillator applications.

Q: What is the significance of the ESR difference (100 Ohms vs. 60 Ohms)?

A: ESR affects oscillator startup time and power consumption. The lower ESR of the substitute part (60 Ohms) generally results in faster startup and lower power dissipation, representing an improvement over the original specification.

Q: Are there physical compatibility concerns with the dimensional differences?

A: The dimensional variations (length: 11.60mm vs. 11.80mm; height: 2.20mm vs. 2.00mm) fall within standard PCB assembly tolerances for 4-SMD packages. The substitute part's lower height provides additional clearance. Standard footprint designs accommodate both variants.

Q: Why is the original part obsolete?

A: The CS20-6.000MABJ-UT is classified as obsolete by the manufacturer. The ABC2-6.000MHZ-4-T is an active product with confirmed inventory availability, ensuring reliable sourcing for production and replacement applications.

Q: What compliance differences exist between the two parts?

A: The substitute part (ABC2-6.000MHZ-4-T) is ROHS3 compliant and REACH affected, meeting current environmental regulations. The original part status for these certifications is not specified. For applications requiring specific regulatory compliance, the substitute part's active status and documented certifications provide assurance.